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Optical Waveguides > Optical Waveguide Sensor Optical Waveguide SensorOptical Waveguide Sensor patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/15/07 - 20070263954 - Biochemical assay detection in a liquid receptacle using a fiber optic exciter Biochemical assays that are performed in cuvettes and in the wells of multi-well plates and that utilize excitation and light emission as labels for detection are enhanced by an illumination and detection system that supplies excitation light through an optical fiber that transmits excitation light from an excitation light source ... 10/18/07 - 20070242916 - Monolithic translation stage device A monolithic device for determining a translation, the monolithic device being fabricated from a single continuous piece of a glass substrate. The monolithic device comprises at least one frame, a moving platform linked to the at least one frame and an optical transducer. The at least one frame is fabricated ... 10/11/07 - 20070237447 - Polarization modulation interrogation of grating-coupled waveguide sensors An optical interrogation system and a GCW sensor are described herein that are used to determine whether a biological substance (e.g., cell, molecule, protein, drug) is located in a sensing region of the GCW sensor. The optical interrogation system includes a light source, a polarization modulator and a detection system. ... 09/27/07 - 20070223855 - Efficient distributed sensor fiber A method and apparatus for improving the sensing of a physical parameter using a distributed optical waveguide and scattering. The optical waveguides have improved scattering efficiency and/or improved light capturing capability provided by multi-cladding layers and a tightly confining core waveguide. The core can be highly doped with a material ... 08/30/07 - 20070201788 - Depth-resolved reflectance instrument and method for its use A reflectance instrument illuminates the surface of tissue with light of a selected wavelength and light emanating from the tissue due to reflectance is collected. The angle of illumination of tissue surface and/or collection of reflections is changed to probe at various depths beneath the surface of the tissue. The ... 08/30/07 - 20070201787 - Sensor device The present invention relates to a sensor device for detecting the amount of or changes in chemical stimuli in a gaseous or liquid phase analyte (e.g. a microanalyte) having means for intimately exposing at least a part of the (or each) sensing element to the localised environment containing the chemical ... 08/23/07 - 20070196043 - Planar-resonator based optical chemo- and biosensor A biological or chemical optical sensing device comprises at least one planar micro-resonator structure included in a light emitting waveguide, and at least one biological or chemical probe bound to at least a part of the micro-resonator structure, the probe operative to bind specifically and selectively to a respective target ... 08/16/07 - 20070189658 - Pressure compensated optical accelerometer, optical inclinometer and seismic sensor system An optical accelerometer includes means for changing the length of at least one optical fiber in response to acceleration functionally coupled to the at least one optical fiber. The fiber and the means for changing length are enclosed in a pressure compensated housing. The housing is filled with a substantially ... 07/19/07 - 20070165978 - Single polarization fiber and method of evaluating fiber cutoff wavelengths using optical time domain reflectometry A method for measuring fundamental mode cutoff wavelength of single polarization fiber comprising: (i) launching pulsed light of at least one wavelength λi into one end of the single polarization fiber; (ii) measuring backscattered light intensity corresponding to said wavelength to obtain the backscattered light intensity as a function of ... 07/05/07 - 20070154131 - Variable attenuation signal acquisition probing and voltage measurement systems using an electro-optical cavity A variable attenuation signal acquisition probing system and voltage measurement system uses an optical cavity to acquire a signal under test. The probing system has an optical transmitter and receiver that are coupled to the optical cavity via an optical transmission system. The optical cavity has an electrode structure having ... 07/05/07 - 20070154130 - Fbg sensor interrogation method using semiconductor optical amplifier in ring cavity configuration A sensor device that uses a number of bragg grating (FBG) sensors and novel interrogation system with a ring cavity configuration for simultaneous time-division-multiplexex (TDM) and wavelength-division-multiplexed (WDM) interrogation of FBG sensors. The ring cavity includes an amplifier, and output coupler and an optical circulator. The coupler is connected to ... 07/05/07 - 20070154129 - Autonomous evanescent optical nanosensor A sensor includes traps that are adjacent to a waveguide and capable of holding a contaminant for an interaction with an evanescent field surrounding the waveguide. When held in a trap, a particle of the contaminant, which may be an atom, a molecule, a virus, or a microbe, scatters light ... 06/28/07 - 20070147726 - Transmitting light with photon energy information In detection and sensing, light is transmitted through layers or structures that vary laterally, such as with a constant gradient or a step-like gradient. After transmission, a position of a transmitted portion of the light or of output photons can be used to determine wavelength change or to obtain other ... 06/14/07 - 20070133922 - Intrusion detection and location system for use on multimode fiber optic cable A telecommunications multimode optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. Pulses are injected using a launch arrangement which generates a narrow spectral width, under-filled, non-uniform mode field power distribution in the multimode optical fiber and Fresnel reflections and Rayleigh ... 06/14/07 - 20070133921 - Optical sensor device for local analysis of a combustion process in a combustor of a thermal power plant An optical sensor device for local analysis of a combustion process in a combustor of a thermal power plant, in particular a gas turbine plant, includes at least one wavelength selective optical element exposed directly or indirectly to hot combustion gases being produced by said combustion process, the optical element ... 06/07/07 - 20070127863 - System and method for guiding light from an interrogation zone to a detector system An optical system for guiding light from an interrogation zone to a detector system. The optical system includes an optical device, a first waveguide, and a second waveguide. The optical device is preferably adapted to collect and partition light into a first channel and a second channel of substantially similar ... 05/24/07 - 20070116403 - Embedded system for diagnostics and prognostics of conduits A set of sensors to be used with an apparatus providing a means for assessment of the integrity of insulated conduits, harnesses, cables, pipelines and other interconnection systems constructed with integral sensitized media, discrete sensors, and electronics providing a means for transforming sensed data into information and a means for ... 05/24/07 - 20070116402 - Humidity sensor and method for monitoring moisture in concrete A humidity sensor and method is disclosed. The sensor is configured as an optical fiber based sensor and may be useful in obtaining moisture information, such as humidity and/or relative humidity (RH) in curing concrete. The sensor may be configured to isolate the sensor from external mechanical stresses, chemical reactions ... 05/24/07 - 20070116401 - Method, system and module for monitoring a power generating system A sensing module positioned about an optical fiber cable having a long axis. The optical fiber includes a core that transmits light through the optical fiber cable. The sensing module includes a first short-period fiber grating positioned about the core. A second short-period fiber grating is positioned about the core ... 05/24/07 - 20070116400 - Method of high order mode excitation for multimode intrusion detection Intrusion detection for a multimode fiber optic cable uses a light signal launched into the fiber through the low ratio leg of a tap coupler to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes at ... 05/17/07 - 20070110356 - Wavelength monitoring system The present invention relates to a system for monitoring the wavelength of electromagnetic radiation including a plurality of waveguides (e.g. planar waveguides) assembled into a laminate structure and to an assembly incorporating the system together with a source of the electromagnetic radiation such as in a multiplexer (e.g. a dense ... 05/17/07 - 20070110355 - Method for installing a double ended distributed sensing fiber optical assembly within a guide conduit A method of installing a double ended distributed sensing optical fiber assembly within a guide conduit. The optical fiber sensing assembly has a first elongate section with a first proximal end and a first distal end, and a second elongate section with a second proximal end and a second distal ... 05/10/07 - 20070104408 - Microfluidic detection device having reduced dispersion and method for making same A microfluidic detection device provides reduced dispersion of axial concentration gradients in a flowing sample. The microfluidic detection device includes a cell body and a flow path through the cell body. The flow path has an inlet segment, an outlet segment, and a central segment, which forms a detection cell. ... 04/26/07 - 20070092175 - Sensing system The present invention relates to a sensing system comprising a spacer at the interface of a sensor component and a secondary system. ... 04/19/07 - 20070086693 - Intrusion detection system for a multimode optical fiber using a bulk optical wavelength division multiplexer for maintaining modal power distribution Intrusion detection of one section only of a multimode fiber uses a light signal launched into the fiber at a location spaced from the source through a single mode fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the fiber. A small portion of the ... 04/12/07 - 20070081759 - Fiber optic probes and methods of measuring biological materials A method for monitoring fluid media such as a dynamic biological system in a biological reactor containing developing culture fluid media. The method includes the step of directing light into the fluid media by way of one or more optical fibers to produce an illuminated fluid media and then measuring ... 04/12/07 - 20070081758 - Optical waveguide type biochemical sensor chip and method of manufacturing the same An optical waveguide type biochemical sensor chip includes a light beam transmittable substrate having at least a first optical element that allows light beam to be impinged to the inside and a second optical element that emits light beam from the inside, an optical waveguide layer that is formed on ... 04/05/07 - 20070077000 - Optical fiber sensor and measuring apparatus using same An optical fiber sensor enabling simpler detection of a state of an external environment and a measuring apparatus using the same are provided. At a front end of an optical fiber portion 20a for transmitting the light a hetero core having a different diameter from that of a core of ... 03/22/07 - 20070065071 - Humidity sensor and method for monitoring moisture in concrete A humidity sensor and method is disclosed. The sensor is configured as an optical fiber based sensor and may be useful in obtaining moisture information, such as humidity and/or relative humidity (RH) in curing concrete. The sensor may be configured to isolate the sensor from external mechanical stresses, chemical reactions ... 03/22/07 - 20070065070 - Segmented fiber optic sensor and method A fiber optic sensor for sensing the presence of an analyte has a plurality of optical fibers each of which has an analyte sensing segment and the fibers are deployed so that the analyte sensing segments are arranged in sequential offset relationship over a distance such that each segment is ... 03/15/07 - 20070058898 - Humidity sensor and method for monitoring moisture in concrete A humidity sensor and method is disclosed. The sensor is configured as an optical fiber based sensor and may be useful in obtaining moisture information, such as humidity and/or relative humidity (RH) in curing concrete. The sensor may be configured to isolate the sensor from external mechanical stresses, chemical reactions ... 03/15/07 - 20070058897 - Fiber bragg grating sensor system The present invention discloses a fiber Bragg grating sensor system. The system according to the present invention comprises a wavelength tunable laser; a coupler for splitting output light from the wavelength tunable laser into two directions; a reference wavelength generating unit for receiving one directional output light from the coupler ... 03/01/07 - 20070047868 - Flow cytometry analysis across optical fiber A flow cytometer type apparatus and method for analyzing a fluid, where the fluid is fed through a passageway within an optical fiber and the light is guided by the fiber across the passageway and intersects the fluid therein. The apparatus includes an optical fiber with a passageway traversing it, ... 03/01/07 - 20070047867 - Downhole fiber optic acoustic sand detector An array of fiber optic acoustic sensors is formed within an optical fiber. The array of acoustic sensors may be deployed to a well bore for detecting acoustic signals occurring within the production area of the well bore, such as acoustic signals resulting from sand invading the well bore. A ... 02/15/07 - 20070036479 - Evanescent nanosensor using an optical resonator A sensor includes an optical resonator, a trap, and a measurement system. The trap is positioned to hold captured contaminant within an evanescent field of the optical resonator. The measurement system can detect the effect of the captured contaminant on the optical resonator. The sensor can includes a photonic crystal ... 01/25/07 - 20070019898 - Fiber optic, strain-tuned, material alteration sensor The present invention includes a method and system of measuring alteration, alteration type, and alteration-causing species in process fluids and equipment and for controlling the process feeds and conditions to maximize the yields and equipment lifetime by minimizing the alteration. The invention includes an optical sensor comprising an optical fiber, ... 01/25/07 - 20070019897 - Method for detecting projectile impact location and velocity vector A method of determining the path of a projectile comprises detecting multiple time of arrivals of the projectile in multiple intersecting planes and determining the path and speed of the projectile based on the multiple times of arrivals. ... 01/18/07 - 20070014505 - Micro sensor device The present invention provides an ultra-mini and low cost refractive index measuring device applicable to biochemical measurements of an extremely minute amount of a sample. The refractive index measuring device uses a photonic crystal without any requirement of an external spectrograph or the like. The micro sensor device according to ... 01/11/07 - 20070009198 - Fiber optic bio-sensor A bio-sensor that includes (a) an optical fiber in which the surface of the fiber comprises a hydrogel polymer that includes a functional group comprising a first member of a binding pair; and (b) an excitation light source coupled to the fiber. When the fiber contacts a solution comprising a ... 01/11/07 - 20070009197 - Fiber optic sensor system A fiber optic system (10, 210) including a plurality of optical sensors, each with an identification system (20, 120, 220, 320). The fiber optic system (10) includes a fiber (12, 112) extending a distance, a demodulator (14), and at least one coupler (16, 116), optical sensor (18, 118) and corresponding ... 01/04/07 - 20070003182 - Fiber optic impact sensing system and method of using same A fiber optic impact sensing system includes a light source, an optical detector, and a sensing optical fiber optically coupled with the light source and the optical detector, the sensing optical fiber being operably associated with an outer surface of a structure. An apparatus includes a structure having an outer ... 12/28/06 - 20060291766 - Biosensor substrate structure for reducing the effects of optical interference A biosensor substrate structure is provided that eliminates the effects of optical interference of light reflected from a substrate/air interface with light reflected by the biosensor's active surface by incorporating a roughened or “non-specular” surface on the lower surface of the substrate opposite the grating. One can generate a useful ... 12/21/06 - 20060285788 - Multi wavelength sensor array The number of sensors that can be used by an SSA system including a single source can be increased by using a multi wavelength source to send different wavelength pulses to each of a plurality of different sensor array ladders, particularly Sagnac sensor array (SSA) ladders. More particularly, each broadband ... 12/07/06 - 20060274990 - Glass microspheres having optimized resonant light scattering properties Glass microspheres were subjected to a multistep spheroidization process resulting in optimized resonant light scattering properties, characterized by a reduction in the particle to particle variation in the intensity contrast of the resonant light scattering spectra. The microspheres have utility in bioanalytical systems which rely on detection of changes in ... 12/07/06 - 20060274989 - Glass microspheres having enhanced resonant light scattering properties Glass microspheres were subjected to a multistep spheroidization process resulting in enhanced resonant light scattering properties, characterized by having at least three sharp, well-defined resonance peaks in their resonant light scattering spectra. The microspheres have utility in bioanalytical systems which rely on detection of changes in resonant light scattering for ... 11/30/06 - 20060269186 - High-impedance attenuator One or more micromachined (MEMS) switches switch attenuators, such as resistors, into or out of a signal path, such as of a test instrument. The MEMS switches can be fabricated on the same substrate as the attenuators, or the switches or attenuators can be mounted on the same substrate as ... 11/23/06 - 20060263002 - Silicon fiber optic sensors A Fabry-Perot cavity is formed by a partially or wholly reflective surface on the free end of an integrated elongate channel or an integrated bounding wall of a chip of a wafer and a partially reflective surface on the end of the optical fiber. Such a constructed device can be ... 11/16/06 - 20060257068 - Gas-filled optical fiber for wavelength calibration or measurement There is provided a gas cell. The gas cell has an optical fiber that includes a first hole that contains a first reference gas that absorbs a first wavelength of light, and a second hole having a content selected from the group consisting of (a) a vacuum and (b) a ... 11/16/06 - 20060257067 - Photonic crystal system and method of controlling/detecting direction of radiation propagation using photonic crystal system A photonic crystal system and a method for controlling the direction of radiation propagation are disclosed. The photonic crystal system includes a photonic crystal and a deformation source positioned to deform the photonic crystal. The photonic crystal system optionally includes a radiation source that emits radiation at a frequency within ... 11/16/06 - 20060257066 - Fibre-optic surveillance system A fibre-optic surveillance system (10) includes a fibre-optic sensor (15) comprising a serial array (15) of fibre-optic point-sensors (16), successive point-sensors being linked by a distributed fibre-optic sensor (18). The system allows the location of intruder events along the sensor to be determined, and provides a reduction in the incidence ... 10/26/06 - 20060239603 - Distributed sensor system coupled with a plurality of secondary sensors An intrusion detection system with a distributed sensor system coupled with a plurality of secondary sensors is disclosed. The distributed sensor is deployed over a protected zone, and detects physical disturbances caused by intrusion into the zone. A plurality of physical disturbing devices is coupled to the distributed sensor to ... 10/19/06 - 20060233484 - Adhesive-assembled fiber-optic interferometer A method to assemble optical fiber devices and a fiber optic sensor is provided. It features a small adhesive joint between the fiber and a capillary tube by means of a small recess carved on the side of the fiber. This recess acts as a reservoir for the adhesive during ... 10/19/06 - 20060233483 - Molecular detection using an optical waveguide fixed to a cantilever The invention relates to devices and methods for detecting a ligand in a liquid, based on deflection of one or more microscopic cantilevers. Each cantilever has an optical waveguide fixed thereto or integral therewith. Deflection of the cantilever is detected by assessing coupling of light between the optical waveguide on ... 10/19/06 - 20060233482 - Compaction monitoring system Methods for determining a preferred application of a plurality of transducers or sensors to a structure are disclosed for monitoring and imaging deformation of the structure as it is subjected to various forces. ... 10/19/06 - 20060233481 - Photonic crystal device for fluid sensing An apparatus for sensing at least one property of a fluid is described. A first photonic crystal structure and a second photonic crystal structure are defined in a dielectric slab. The first and second photonic crystal structures comprise differently patterned arrays of channels extending through the dielectric slab. The apparatus ... 09/14/06 - 20060204165 - Calculation of birefringence in a waveguide based on rayleigh scatter Light is coupled into two polarization modes of a waveguide, e.g., an optical fiber. The spectral response of Rayleigh backscatter in the waveguide segment for the two polarization modes is measured, e.g., using OFDR, OTDR, OLCR, etc. The autocorrelation of the spectral response is calculated. The spectral (wavelength) shift from ... 09/14/06 - 20060204164 - Low cost fiber-optic gage and associated multi-channel all-optical data collecting system Simplified and insensitive to ambient condition fiber-optic gage and associated multi-channel data collecting system capable of all-optical measurements of a physical phenomenon, such as gas and liquid pressure, temperature, structural movement and force without fire and explosion hazards associated with conventional strain gage technologies, such as resistance foil strain gages. ... 09/07/06 - 20060198567 - Optical sensor and modulator An optical device is presented for use in modulation of light and/or in sensing an external field, by at least partially, directly or indirectly exposing the device to the controllable or unknown external field. The device comprises a waveguide structure configured to define at least a first light channel having ... 08/31/06 - 20060193550 - Methods for using resonant waveguide-grating filters and sensors Methods of detecting one or more parameters of a medium are disclosed. The methods include providing a waveguide grating device, contacting the waveguide grating with a medium, propagating a signal having at least one signal attribute through the waveguide, and comparing the modified signal attribute to a known signal attribute ... 08/17/06 - 20060182383 - Compact fiber optic geometry for a counter-chirp fmcw coherent laser radar This disclosure presents a non-contact precision optical device, including methods for measuring distances to an arbitrary target and various configuration geometries, for using polarization maintaining (PM) optical fiber components in a polarization diplexing scheme to construct a version of a dual chirp coherent laser radar that is immune to environmental ... 08/17/06 - 20060182382 - Optical reader system and method that uses non-coherent illumination and angular filtering to interrogate a label independent biosensor An optical reader system and method are described herein that directs a non-coherent light towards a biosensor, collects the non-coherent light which is reflected (or transmitted) from (or through) the biosensor, and then angularly filters the collected non-coherent light to obtain a narrow spectral response which can be analyzed to ... 07/27/06 - 20060165343 - Method and apparatus for sensing light Disclosed is an optical apparatus including an optical fiber having a wavelength of operation, the optical fiber comprising a first length of the optical fiber joined to a second length of the optical fiber with a splice such that the first and second lengths are in optical communication; a photodetector ... 07/27/06 - 20060165342 - Microfluidic sensors and methods for making the same Microfluidic optical sensor comprising: an optical waveguide capable of propagating light from an optical input port to an optical output port, the optical waveguide comprising an optical waveguide interaction region; a fluidic channel capable of conducting a fluid from a fluid input port to a fluid output port, the fluidic ... 07/13/06 - 20060153489 - Fiber optic security system and control method thereof The invention relates to a fiber optic security system and control method thereof which, in detail, is embodied by plural channels each comprising an optical transmitter module, an optical transmission line, and an optical receiver module. The invention is easy to install on windows, doors or fences which need to ... 07/13/06 - 20060153488 - Optical sensor A light detection device 1 comprises a photocathode 30 and an electron multiplier 50, which are positioned inside a vacuum container 10. A photomultiplier tube is arranged from these components. Light detection device 1 is equipped with an optical fiber 20, through which a light signal L flows, and photocathode ... 07/13/06 - 20060153487 - System and method for packaging a fibre optic sensor A fibre optic sensor deployed on a fibre optic cable to a remote location, such as an oil or gas well. The sensor, which can sense any of a variety of parameters such as pressure, temperature, flow rate, strain, or chemical properties, is located within a sleeve. The sleeve is ... 07/06/06 - 20060147149 - Distributed optical fiber sensor with controlled response Distributed fiber optic chemical and physical sensors provide a relatively highly uniform response over the length of the fiber by, for example, varying such properties as the core/cladding index of refraction ratio to compensate for the non-linearity in sensitivity due for example to the loss of higher order modes in ... 07/06/06 - 20060147148 - Method and apparatus for pixel display and sers analysis Irradiation devices and methods of amplification and irradiation are disclosed for displaying pixels and Surface Enhanced Raman Spectroscopy (SERS) analysis. The devices include an optical modulator, which may be configured for operation in a variably transmissive state. An active region may be formed in an optical waveguide with the optical ... 07/06/06 - 20060147147 - Waveguide structure A novel single point leaky waveguide structure and its use as an optical sensor for the detection of particles is disclosed. The waveguide structure is fabricated to increase the overlap of the evanescent field extension from the sensor surface with particles in the bulk solution of a flowing system so ... 06/29/06 - 20060140531 - Fiber-optic sensing system for measuring curvature The invention provides a fiber-optic sensing system for measuring a curvature in a small and elongated cavity of an object. The system includes a light source, an optical fiber and a light signal reflecting device disposed at a distal end of the optical fiber. The optical source emits a light ... 06/15/06 - 20060126991 - In-fiber whitelight interferometry using long-period fiber grating An optical fiber sensor is provided for displacement measurement, pressure measurement, refractive index measurement, bio/chemical detection, and/or microscopy. ... 06/15/06 - 20060126990 - Magneto-optical sensors A system for estimating a parameter selected from the group consisting of a current, a magnetic field, or combinations thereof comprises a resonant frequency tunable magneto-optical loop resonator, wherein the loop resonator comprises a magneto-optical sensing element coupled to an optical waveguide, and wherein the loop resonator is configured for ... 06/01/06 - 20060115205 - Calibration and measurement of temperatures in melts by optical fibers A method is provided for calibrating measurement signals obtained with optical fibers, wherein a reference material having a known reference temperature is arranged at one end of an optical fiber, the reference material is heated up to at least its reference temperature, the signal received by the fiber when the ... 06/01/06 - 20060115204 - Distributed temperature sensing system with remote reference coil The invention is an optical fiber distributed temperature sensing system comprising an opto-electronic unit and a sensing optical fiber, which system measures temperature so as to provide a temperature profile along at least part of the length of the optical fiber. The system includes reference coils, which are temperature reference ... 06/01/06 - 20060115203 - System and method to minimize modulation instability The present invention comprises the use of a fiber in a sensing optical fiber system operated in a region of negative chromatic dispersion to minimize modulation instability thereby enabling the identification and measurement of the information-carrying signals. The present invention may be used in a variety of sensing environments. ... 06/01/06 - 20060115202 - Fibre optic based semiconductor micro sensors for sensing pressure or temperature, fabrication methods of said sensors, and a method of securing an optical fibre to a silicon block An optical micro sensor (1) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor (1) is fabricated using MEMS technology and is adapted to receive an optical fibre (40) which communicates radiation to and from the micro sensor (1). ... 06/01/06 - 20060115201 - Device for the ir-spectrometric analysis of a solid, liquid or gaseous medium The invention relates to a device for the IR-spectrometric analysis of a solid, liquid or gaseous medium. The device includes a process probe, which has a reflection element. The device additionally includes a linear variable filter, at least one detector element, and a control/evaluation unit. At least one light source ... 06/01/06 - 20060115200 - Optical splitter with tapered multimode interference waveguide A 1×2 splitter design having low loss is described. The splitter has a non-adiabatic tapered waveguide (22) connected between a substantially single-mode input waveguide (20) and two output waveguides (24, 26). The non-adiabatic tapered waveguide widens in width towards the output waveguide, and merges substantially continuously with the input waveguide ... 05/04/06 - 20060093254 - Single-fiber launch/receive system for biosensing applications An interrogation system and method are described herein which use a single-fiber launch/receive system for interrogating a biosensor (optical sensor) to detect the occurrence of a bio-chemical interaction (e.g., biological binding of ligands with analytes). In one embodiment, the single-fiber launch/receive system utilizes a multimode fiber to help interrogate the ... 04/06/06 - 20060072868 - Pressure sensor A pressure sensor includes an optical transmitter transmitting a dispersive light toward two optical receivers, all carried in a housing. Pressure changes on the housing cause the light beam to be deflected with the amount of deflection measured by the difference in light received by each of the two receivers. ... 03/30/06 - 20060067605 - Photonic crystal optical temperature measuring system A photonic crystal optical temperature measuring system and a method for measuring the temperature of an object. The photonic crystal optical temperature measuring system has at least one photonic crystal temperature sensor having a resonant cavity, the resonant frequency of which is a function of the temperature of the resonant ... 03/23/06 - 20060062509 - Self-referencing waveguide grating sensors Self-referencing optical sensors and methods are described herein that can be used to detect bio-chemical interactions (e.g., biological binding of antigen-antibody pairs) that occur in for example a microplate. In one embodiment, the self-referencing optical sensor includes a substrate, a lower (reference) waveguide grating structure, a buffer layer and an ... 03/23/06 - 20060062508 - Systems and methods for biosensing and microresonator sensors for same A biosensor system is provided for detecting biological species such as bacteria, proteins, viruses, spores and DNA or RNA. The biosensor system may also be able to distinguish between Gram positive and Gram negative bacteria. In some embodiments, the analyte solution flows past a detector surface to a filter, which ... 03/02/06 - 20060045409 - Test device for identifying optical components Methods, apparatuses, and systems for obtaining identification information about fiber optic components and optical assemblies in a non-invasive manner. The present invention further includes test devices for receiving a fluorescent emission having a predetermined spectral signature. The spectral signature provides identification information. The identification information can describe a characteristic of ... 03/02/06 - 20060045408 - Structural member bend radius and shape sensor and measurement apparatus Structural member bend radius sensor apparatus 90 comprises three fibre Bragg grating (FBG) strain sensors 102 provided within three optical fibres 14, 16, 18. The optical fibres 14, 16, 18 and the FBGs 102 are embedded within a part-cylindrical shaped carrier member 92. The fibres 14, 16, 18 are provided ... 02/23/06 - 20060039643 - Misalignment compensating optical sensor and method A misalignment compensating optical sensor (222), that is operable to receive excitation light (30) having a range of input propagation angles ω. The sensor (222) has a variable reflected propagation angle θ0i reflective surface (227) and a sensing waveguide (228). The shape of the reflective surface (227) is selected to ... 02/16/06 - 20060034558 - System for the measurement and data acquisition for optical fiber sensors A system for the measurement and surface data acquisition for optical fiber sensors containing Bragg gratings for the sensing of physical parameters originated from a set of oil wells, the system including: an optical system for signal processing, the signals being originated from physical parameters sensors installed in one single ... 02/09/06 - 20060029322 - Optical fiber sensor based on retro-reflective fiber bragg gratings A retro-reflective sensor for sensing mechanical, chemical or temperature related information, is disclosed. The sensor is formed of an optical waveguide suitable for use in-situ in a high temperature environment having a Bragg grating written into a core region thereof with short-pulsed electromagnetic radiation, said optical waveguide having a glass ... 02/02/06 - 20060023988 - Micromachined optical pressure sensor A pressure sensor including: a deflectable diaphragm including a substantially central boss and channel; and, an optical waveguide having first and second arms, wherein the first arm is substantially aligned with an edge of the boss and the second arm is substantially aligned with an edge of the channel. ... 01/26/06 - 20060018586 - Distributed optical fiber sensor system A distribution optical fiber sensor system measures distortion and temperature of a structure with a high spatial resolution. The system has an optical fiber on an object to be measured. A light source emits a first pulse light having a pulse width longer than a transient response of an acoustic ... 01/19/06 - 20060013523 - Fiber optic position and shape sensing device and method relating thereto The present invention is directed toward a fiber optic position and shape sensing device and the method of use. The device comprises an optical fiber means. The optical fiber means comprises either at least two single core optical fibers or a multicore optical fiber having at least two fiber cores. ... 01/05/06 - 20060002650 - Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes arriving at the ... 01/05/06 - 20060002649 - Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes arriving at the ... 12/15/05 - 20050276535 - Zero-mode metal clad waveguides for performing spectroscopy with confined effective observation volumes The present invention is directed to a method and an apparatus for analysis of an analyte. The method involves providing a zero-mode waveguide which includes a cladding surrounding a core where the cladding is configured to preclude propagation of electromagnetic energy of a frequency less than a cutoff frequency longitudinally ... 12/15/05 - 20050276534 - Extended intensity-based optical sensor An extended optical sensor comprises a plurality of equally spaced intensity-based point sensors connected in parallel such that the optical path lengths are the same within the extended sensor enclosure. The input to the extended sensor is a single optical fiber as is the output. ... 12/08/05 - 20050271318 - Optical fiber coupling device, wavelength shifter, pressure sensor, acceleration sensor, and optical device A fiber coupling device comprises fixing parts 1V, to which the respective ends of two optical fibers 5 and 6 are fixed, photonic crystal 2, disposed inside the light path of light that propagates across the abovementioned ends, and external force application means 3, which applies an external force to ... 12/08/05 - 20050271317 - Efficient distributed sensor fiber A method and apparatus for improving the sensing of a physical parameter using a distributed optical waveguide and scattering. The optical waveguides have improved scattering efficiency and/or improved light capturing capability provided by multi-cladding layers and a tightly confining core waveguide. The core can be highly doped with a material ... 12/01/05 - 20050265648 - Evanescent wave sensor containing nanostructures and methods of using the same The invention provides an evanescent wave sensor containing a porous nanostructure layer. In general, a subject sensor contains a transparent substrate and a porous nanostructure layer bound to a surface of the substrate. Also provided by he invention are methods of using the subject sensors, e.g., in analyte detection, as ... 11/17/05 - 20050254744 - Sensing system A sensing system comprises a spacer at the interface of a sensor component and a secondary structure. ... 11/10/05 - 20050249448 - Self-healing fiber bragg grating sensor system The present invention is a self-healing fiber Bragg grating sensor system which comprises a central office, at least one network node, at least one 2×2 optical switch and at least one fiber Bragg grating. The network node can be made of optical switch. When the fiber for the sensor system ... 11/03/05 - 20050244093 - Wavelength-tuned intensity measurement of surface plasmon resonance sensor An incident signal illuminates an SPR sensor over a wavelength range. Intensity of a reflected signal from the SPR sensor is detected with wavelength discrimination imposed on the incident signal or the reflected signal. The wavelength discrimination is imposed at a predesignated tuning rate within the wavelength range. The detected ... 10/20/05 - 20050232531 - Fibre-optic interferometric remote sensor A method and apparatus for receiving measurements from an interferometer transducer (22) uses a broad band light beam (19A), reflected from the transducer (22), and compares it with the amplitudes of narrow band beams, derived from the reflected broad band light beam (19A), by filters (23A-23D) on different frequencies. The ... 10/13/05 - 20050226548 - Method and apparatus for quantification of optical properties of superficial volumes A device and method for accurately performing quantitative diffuse optical spectroscopy on a sample includes a light source and a source optical fiber that is optically coupled to the light source. A diffuser material is interposed between the source optical fiber and the sample, the diffuser material comprising a high ... 09/29/05 - 20050213869 - System and method for resolution enhancement of a distributed sensor A Brillouin Optical Time-Domain Analysis (BOTDA) distributed sensor system and method use a continuous wave (cw) Stokes wave interrupted with a dark pulse for improved spatial resolution. The cw Stokes wave causes a continuous depletion of the pump wave. The dark pulse causes the depletion to stop for the duration ... 09/29/05 - 20050213868 - Photonic crystal defect cavity biosensor A biosensor is described having the form of a photonic crystal having defect cavities formed in a periodic pattern in the device. The invention provides a higher sensitivity and a greater degree of spatial localization of incoupled photons than previously reported photonic crystal biosensor devices. ... 09/29/05 - 20050213867 - Optical battery temperature monitoring system and method Several methods for measuring and monitoring temperature have been presented for systems requiring temperature monitoring. In one implementation, the system has been applied to battery assemblies. Temperature measurements for every part of the battery assembly are disclosed. In one aspect the surface temperature of a battery assembly is measured. In ... 09/29/05 - 20050213866 - System The present invention relates to a system for monitoring the wavelength of electromagnetic radiation including a plurality of waveguides (e.g. planar waveguides) assembled into a laminate structure and to an assembly incorporating the system together with a source of the electromagnetic radiation such as in a multiplexer (e.g. a dense ... 09/15/05 - 20050201662 - Scanning miniature optical probes with optical distortion correction and rotational control Optical probes having a diameter less than substantially 500 μm for use in scanning light from a long, highly flexible fiber to a sample. In one embodiment the probe includes a viscous damping fluid suitable to prevent non-uniform rotational distortion (NURD). ... 09/15/05 - 20050201661 - Phase shift optical loop spectroscopy The invention provides a method and apparatus for measuring one or more optical properties, such as absorbance and refractive index, of a test medium such as a gas, a liquid, or solid material. The method comprises providing a passive optical waveguide loop comprising the test medium, launching in the optical ... 09/15/05 - 20050201660 - Apparatus for single nanoparticle detection A photonic crystal sensor adapted for single nanoparticle detection is disclosed. Very small single particles and single molecules may be detected. The sensors may be adapted to allow differential measurements. ... 09/15/05 - 20050201659 - System, probe and methods for colorimetric testing A microfluidic chip that includes a substrate, a microresonator, and at least one waveguide or coupling surface. The substrate defines a microfluidic channel. The microresonator is positioned within the microfluidic channel. The at least one waveguide or coupling surface receives light having a frequency bandwidth greater than the spacing between ... 09/15/05 - 20050201658 - Variable attenuation signal acquisition probing and voltage measurement systems using an electro-optical cavity A variable attenuation signal acquisition probing system and voltage measurement system uses an optical cavity to acquire a signal under test. The probing system has an optical transmitter and receiver that are coupled to the optical cavity via an optical transmission system. The optical cavity has an electrode structure having ... 09/15/05 - 20050201657 - Optical sensor and optical process for the characterization of a chemical and/or bio-chemical substance The optical sensor contains an optical waveguide (1) with a substrate (104), waveguiding material (105), a cover medium (106) and a waveguide grating structure (101-103). By means of a light source (2), light can be emitted to the waveguide grating structure (101-103) from the substrate side and/or from the cover ... 07/28/05 - 20050163414 - Rib structural system and method of manufacturing the rib structural system In a method of manufacturing a rib structural system, tape-shaped prepregs, each made of a fiber reinforced composite material into which a resin is impregnated, are laminated to form ribs in the form of a grid, while an optical fiber including Fiber Bragg Grating members at predetermined locations is layered ... 07/28/05 - 20050163413 - Method for determining a qualitative characteristic of an interferometric component The present invention relates to a method for determining a qualitative characteristic of an interferometric component (eg a planar waveguide structure) or a process for determining a qualitative characteristic of a stimulus of interest to which the interferometric component (eg the planar waveguide structure) has been exposed by measuring a ... 07/21/05 - 20050157971 - Apparatus comprising an optical input device and at least one further optical device having a common radiation source In an apparatus comprising an optical input device (220) controlled by a moving object and also comprising at least one further optical device (230,240) to be provided with electromagnetic radiation (225,226), wherein the input device comprises at least one diode laser (222) for supplying at least one measuring beam to ... 07/07/05 - 20050147342 - Optical waveguide sensor, device, system and method for glucose measurement An optical waveguide sensor for glucose measurement comprises a substrate, a first optical waveguide layer formed on a surface of the substrate, an entrance grating and an exit grating which are formed contacting with the first optical waveguide layer and being spaced from each other, a second optical waveguide layer ... 07/07/05 - 20050147341 - Distributed fiber sensor with interference detection and polarization state management Polarization effects are managed to provide differential timing information for localizing disturbances affecting two or more counter-propagating light signals on one or more optical waveguides passing through a detection zone. Activity can be localized to a point for a security perimeter. Events causing optical disturbance can be mapped to points ... 07/07/05 - 20050147340 - Perimeter security system and perimeter monitoring method A perimeter security system is disclosed which includes a first cable (40) and a second cable (60) buried beneath the ground in a zig-zag pattern. The first cable (40) has a first fibre (44) and a further fibre (42). Second cable (60) has a second fibre (62). The first and ... 06/23/05 - 20050135723 - Optical substance analyzer A portable waveguide sensor having one or more gratings. In one embodiment, the sensor has a waveguide, wherein a plurality of grooves imprinted onto the waveguide form a Bragg grating. The surface of the grooves has a functional layer adapted to bind a substance of interest, e.g., a biological pathogen. ... 06/09/05 - 20050123230 - Hermetic seal for use in converting optical signals to electrical signals The present invention provides a configuration where all optical parts of a monitoring system are contained within a seal and within the generator itself. Non-optical preamplifier functions may also be placed within the seal. In this configuration there is an electrical rather than optical feed-through at the generator wall, which ... 06/02/05 - 20050117830 - Optical time domain reflectometry An optical time domain reflectometry method of sensing a parameter to be measured in a region of interest comprises launching optical radiation (4) at a probe wavelength into an optical fibre (5, 6) and producing electrical output signals in response to optical radiation backscattered from the optical fibre (5, 6). ... ### FreshPatents.com Support |