|
Match
|
Document |
Document Title |
|
|
8180186 |
Optical switches and logic gates employing same
An optical switch including a light passageway having a changeable cross-sectional area, an activation light responsive piezoelectric element associated with the light passageway, the activation...
|
|
|
8174703 |
Method for fabricating a sensor, a sensor, and a method for sensing
A method for fabricating a sensor, a sensor so fabricated, and a method for sensing a stimulus are provided. The method includes providing an elongated open channel, such as, a V-groove, in a...
|
|
|
8160406 |
Acoustic sensor with at least one photonic crystal slab
An acoustic sensor includes at least one structure including at least one photonic crystal slab and an optical fiber optically coupled to the at least one photonic crystal slab, and having at least...
|
|
|
8155486 |
Flexural disc fiber optic sensor and method of forming same
A fiber optic sensor employs at least two flexural discs that are spaced apart from one another along a central axis. A fiber optic coil is affixed to at least one of the flexural discs. A proof...
|
|
|
8144271 |
Multi-touch sensing through frustrated total internal reflection
High-resolution, scalable multi-touch sensing display systems and processes based on frustrated total internal reflection employ an optical waveguide that receives light, such as infrared light,...
|
|
|
8139905 |
Generator protection system
A temperature sensor is disclosed. The sensor includes an optical fiber and at least one twin-grating structure formed on the optical fiber. Each twin-grating structure includes a first optical...
|
|
|
8135247 |
Packaged sensors and harsh environment systems with packaged sensors
A fiber sensor package is disclosed. The fiber sensor package includes an interconnection between a first optical fiber and a second optical fiber within a tubing such that the first and second...
|
|
|
8135244 |
Real time measurement of shock pressure
A fiber-based optical pressure-sensor, made using semiconductor nanocrystal quantum dots (NQDs) as the active transducing material, provides response time fast enough for shock wave measurements....
|
|
|
8131121 |
Optical fiber pipeline monitoring system and method
In accordance with one aspect of the present invention, a fiber surveillance system for monitoring a pipeline is provided. The surveillance system includes an optical fiber acoustically coupled to...
|
|
|
8121442 |
Optical fiber surveillance topology
In accordance with an aspect of the disclosed technology, a fiber surveillance system includes a single optical fiber, used, for example, in the detection of acoustic signals associated with...
|
|
|
8111952 |
Strain sensing device and method of measuring strain
A strain sensing device has a sub-assembly with at least one optical fiber therein, and a metallic coating encasing the sub-assembly. The metallic coating is strain coupled to the sub-assembly. A...
|
|
|
8111953 |
Optical power modulation vital sign detection method and measurement device
A vital sign measurement device includes a sensor fixation device, a sensor frame, an optical sensing system, and an output unit. The sensor fixation device is adapted to be placed against an...
|
|
|
8098967 |
Generator protection system
A magnetic flux sensor is disclosed. The sensor comprises an optical fiber and at least one twin-grating structure formed on the optical fiber. Each twin-grating structure comprises a first optical...
|
|
|
8094977 |
Intrusion detection system for use on single mode optical fiber using a simplified polarimeter
A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the...
|
|
|
8075809 |
Method for production of a band with several parallel optical fibers
In a method for the production of optical bands with several optical fibers, the surface of the optic fibers in said bands is treated such as to increase the optical damping in sections of the...
|
|
|
8073294 |
Remote optical fiber surveillance system and method
In accordance with one aspect of the disclosed technology, wireless communications are used in a fiber surveillance system to enable monitoring of remote locations for vibrations, acoustic signals,...
|
|
|
8059925 |
Optical input system and method
An optical system and method are disclosed. In an exemplary embodiment, the optical input system comprises a fiber optic cable defining an axial beam path, the fiber optic cable configured to...
|
|
|
8048063 |
Catheter having tri-axial force sensor
A catheter for diagnosis or treatment of a vessel or organ is provided in which a flexible elongated body includes a tri-axial force sensor formed of a housing and a plurality of optical fibers...
|
|
|
8050523 |
Optical fiber shape sensing systems
A medical instrument system includes an elongate flexible instrument body with an optical fiber substantially encapsulated in a wall of the instrument body, the optical fiber including one or more...
|
|
|
8031988 |
Apparatus for pressure sensing
The present invention provides an apparatus for pressure sensing. The apparatus comprises a light guide, a Bragg grating incorporated into the light guide and a moveable wall portion. The moveable...
|
|
|
8027584 |
Sensing a disturbance
The present invention relates to a system for sensing of a disturbance on an optical link. Data traffic from an optical source with a short coherence length is transmitted along the link to a...
|
|
|
8009946 |
Fiberoptic patient health multi-parameter monitoring devices and system
A patient monitoring system includes a plurality of diffraction gratings integrated along the length of an optical fiber, wherein the optical fiber and each grating are together configured to alter...
|
|
|
8005324 |
Fault detection system
A fault detection system for subsea pipeline DEH cable includes fiber optic element(s) (7) provided along the cable section concerned and located outside at least some of the cable insulation...
|
|
|
8005325 |
Apparatus for sensing a motion
The present disclosure provides an apparatus for sensing a motion. The apparatus comprises an optical fibre portion comprising a Bragg grating and an element for reducing an impact of an external...
|
|
|
7974503 |
Fiber grating sensor
A fiber grating sensor including an elastic circular plate and one or two FBG'ss attached to the bottom surface of the elastic circular plate. Two ends of the FBG are connected to an optic fiber...
|
|
|
7946341 |
Systems and methods for distributed interferometric acoustic monitoring
Acoustic monitoring of a conduit, a wellbore or a reservoir associated with hydrocarbon production or transportation and/or carbon dioxide sequestration is carried out using a fibre optic cable...
|
|
|
7947945 |
Fiber optic sensing system, method of using such and sensor fiber
An embodiment of a sensor fiber includes: at least two fiber sections with a plurality of holes; and at least one other fiber section situated between said at least two fiber sections, wherein the...
|
|
|
7903907 |
Force and deflection sensor with shell membrane and optical gratings and method of manufacture
A sensor for force is formed from an elastomeric cylinder having a region with apertures. The apertures have passageways formed between them, and an optical fiber is introduced into these...
|
|
|
7889954 |
Optical fiber-mounted porous photonic crystals and sensors
An embodiment of the invention is a remote sensor that has an optical fiber terminating in a tip. A thin film porous particle having a characteristic optical response that changes in the presence...
|
|
|
7889955 |
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...
|
|
|
7885491 |
Method for producing a bending sensor
At least one sensing region is formed on the bending sensor by providing a flexurally elastic base cover which is interrupted in at least one partial region of the sensing region or is structured...
|
|
|
7881567 |
Optical device for monitoring a rotatable shaft with an oriented axis
An optical device for monitoring a rotatable shaft is disclosed. The optical device has an optical waveguide arranged on the rotatable shaft and an optical sensor. The optical device further has a...
|
|
|
7860355 |
ATR-probe
An ATR-probe including: a housing having a media opening; a radiation guiding body closing the media opening and having two planparallel surfaces, between which light can be guided by means of...
|
|
|
7856888 |
Fiber optic strain gage and carrier
The current invention relates to optical gages designed to measure strain on the surface of a test specimen. The gages of this invention is designed to be installed and used in a manner similar to...
|
|
|
7856157 |
Pipeline security system
The present invention provides a security system for a pipeline, such as an oil, gas or water pipeline, or other tubular, elongated or other structures used to convey various other liquid, gaseous...
|
|
|
7852213 |
Double-end fiber optic security system for sensing intrusions
A security system is disclosed for detecting intrusions at a plurality of predetermined locations having moveable closure members. The system comprises a plurality of intrusion sensors disposed at...
|
|
|
7844178 |
Local area warning of optical fiber intrusion
Disclosed is a method and apparatus which provides for alerting of potential fiber optic cable intrusion. A stress detector located at a fiber optic cable termination point detects stress on the...
|
|
|
7840102 |
Distributed optical pressure and temperature sensors
Disclosed herein is a carrier for an optical fiber having a plurality of optical sensors located thereon. Such carrier can be a thick-walled capillary tube or other shapes. The carrier has a sealed...
|
|
|
7840101 |
Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal
Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include...
|
|
|
7822299 |
Optical power modulation vital sign detection method and measurement device
A vital sign measurement device includes a sensor fixation device, a sensor frame held by the sensor fixation device, an optical sensing system 104 held by the sensor frame, and an output unit. The...
|
|
|
7813599 |
Method and apparatus for shape and end position determination using an optical fiber
A method of determining the shape of an unbound optical fiber includes collecting strain data along a length of the fiber, calculating curvature and bending direction data of the fiber using the...
|
|
|
7809219 |
High-sensitivity fiber-compatible optical acoustic sensor
An acoustic sensor includes at least one photonic crystal structure having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes...
|
|
|
7796843 |
Design and performance of a Fiber Bragg grating displacement sensor for measurement of movement
A displacement sensor based on the underlying principle that when the outer surface of a quartz fiber (fiber optic cable) is etched to form a series of regularly spaced lines (a Fiber Bragg...
|
|
|
7796844 |
Temperature-compensated fibre optic strain gauge
A temperature-compensated fibet optic strain gauge (10) for measuring strain of a host structure (5), the strain gauge (10) comprising: a mount (20) having a void (19) separating a first section...
|
|
|
RE41645 |
Light triggered light switch
A light switch is disclosed to turn on or off the light signal in a light channel by means of the response of piezoelectric material to the electric field of light in the light channel. The LIGHT...
|
|
|
7792392 |
Fiber optic gas sensor
A gas sensor includes an in-fiber resonant wavelength device provided in a fiber core at a first location. The fiber propagates a sensing light and a power light. A layer of a material is attached...
|
|
|
7787725 |
Fiber optic microphone and a communication system utilizing same
An arrangement for a fiber optic microphone having at least one pair of optical fibers, each having an input end portion and an output end portion made of a material having a critical refractive...
|
|
|
7778500 |
Optical fiber strain sensor
An optical fiber strain sensor, a method of fabricating the same, and a method of sensing strain. The method of strain sensing comprises providing an optical fiber having a fiber Bragg grating...
|
|
|
7769260 |
Intervention rod
A rod having an embedded optical fiber has a stiff composite outer layer (10) to make the rod self straightening to enable it to be pushed into a pipe or borehole from a spool. This can help enable...
|
|
|
7769252 |
Location marker for distributed temperature sensing systems
Methods and apparatus for distributed temperature sensing (DTS) include marking one or more points at known locations along a waveguide or fiber of a distributed temperature sensing (DTS) system...
|