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US20150254949 |
FIBER OPTIC VAULT SECURITY SYSTEM
An enclosed security system includes a metal cage with security panel affixed thereto, forming a vault in which an item of value is enclosed. The security panels include a series of fiber optic... |
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US20090260834 |
Intervention Rod
A rod having an embedded optical fibre 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... |
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US20150250548 |
OPTIC FIBER CONNECTION FOR A FORCE SENSING INSTRUMENT
In one embodiment, a surgical instrument includes a housing linkable with a manipulator arm of a robotic surgical system, a shaft operably coupled to the housing, a force transducer on a distal... |
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US20130308895 |
SIDE-HOLE CANE WAVEGUIDE SENSOR
A side-hole optical cane for measuring pressure and/or temperature is disclosed. The side-hole cane has a light guiding core containing a sensor and a cladding containing symmetrical side-holes... |
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US20140321799 |
Fiber-Grating Sensors Having Longitudinal-Strain-Inducing Jackets and Sensor Systems and Structures Including Such Sensors
A sensor comprising an optical fiber that includes a Bragg grating and a longitudinal-strain-inducing (LSI) jacket for inducing longitudinal strain into the optical fiber as a function of a... |
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US20140140656 |
Method to utilize string-strain-change induced by a transverse force and its application in fiber Bragg grating accelerometers
When a transverse force is applied to a stretched string that is fixed by its two ends, the string bends and the strain of the string increases to balance the transverse force. As a result, the... |
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US20150091875 |
PRESSURE SENSING TOUCH SYSTEMS AND METHODS
Pressure-sensing touch systems and methods are disclosed for sensing the occurrence of a touch event based on pressure applied at a touch location. The touch system includes a light-source system... |
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US20150077740 |
CABLE WITH OPTICAL FIBER FOR PRESTRESSED CONCRETE
A reinforcing cable for a prestressed concrete structure is disclosed. The cable has an optical fiber entwined between the twisted wire ropes that form the cable. The optical fiber facilitates in... |
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US20150260567 |
CABLE COMPRISING TWISTED SINUSOID FOR USE IN DISTRIBUTED SENSING
A distributed fiber optic cable comprises an elongate body and a first optical fiber longitudinally housed in the body, wherein the fiber describes a sinusoid having an amplitude and a first... |
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US20120257208 |
FIBER OPTIC TRANSDUCERS, FIBER OPTIC ACCELEROMETERS AND FIBER OPTIC SENSING SYSTEMS
A fiber optic transducer is provided. The fiber optic transducer includes a fixed portion configured to be secured to a body of interest, a moveable portion having a range of motion with respect... |
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US20100067845 |
INCLINOMETER SYSTEM
Disclosed is an inclinometer system capable of detecting the inclination of the ground using a fiber bragg grating sensor to precisely measure the deformation of the ground. The inclinometer... |
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US20110002795 |
System to Measure Vibrations Using Fiber Optic Sensors
A vibration monitoring system for an electrical submersible pump (ESP) that includes a fiber optic cable coupled with the ESP and an optical sensor coupled with the fiber optic cable. The optical... |
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US20130294720 |
SYSTEM AND METHOD FOR MAKING DISTRIBUTED MEASUREMENTS USING FIBER OPTIC CABLE
A method for determining the physical location of a fiber optic channel in a fiber optic cable comprises the steps of a) providing at least one location key having a known physical location, b)... |
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US20090220190 |
Leak Detector Using an Optical Fibre
A leak detection apparatus comprising an optical fibre sensor (2) arranged to detect leakage of fluid through a hose carcass (6, 8), wherein the sensor is arranged to detect the location of the... |
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US20100310207 |
OPTICAL MICROMACHINED PRESSURE SENSOR
It is an objective of the present invention to provide a highly sensitive optical pressure sensor that uses a Mach-Zehnder Interferometer to measure pressure. The pressure sensor comprises a... |
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US20130094798 |
Monitoring Structural Shape or Deformations with Helical-Core Optical Fiber
A method, apparatus and system for determine a parameter of a structure is disclosed. A fiber optic cable is coupled to a member. The fiber optic cable includes at least a first core helically... |
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US20120200536 |
Waveguide Configurations for Minimising Substrate Area
The invention describes various optical waveguide layouts with reduced substrate area, with particular application to reducing bezel width in optical touch systems. In certain preferred... |
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US20150219476 |
SPLICABLE FIBER OPTIC SENSING SYSTEM, METHOD OF MAKING SAME AND TAPE FOR SENSE TRANSMISSIVELY LOCKING AN OPTICAL FIBER
A splicable fiber optic sensing system includes, a core, a sheath surrounding the core, an adhesive disposed between the core and the sheath at some locations and not at other locations, and at... |
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US20120056072 |
WHISPERING-GALLERY-MODE-BASED SEISMOMETER
A whispering-gallery-mode-based seismometer provides for receiving laser light into an optical fiber, operatively coupling the laser light from the optical fiber into a... |
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US20130330032 |
FIBER OPTIC SWITCH
This disclosure is of a fiber optic switch, where an actuated plunger causes a snap-action mechanism to change rapidly from a first state to a second state and place a loaded member from a first... |
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US20110102766 |
OPTICAL FIBER SENSOR, PRESSURE SENSOR, END EFFECTOR AND STRESS DETECTING METHOD USING THE SAME
In an FBG (Fiber Bragg Grating) sensor, a stress direction converter includes a flat portion to which stresses are applied from the exterior, and stress transmitting sections that are bridged from... |
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US20120111104 |
FIBER OPTIC CABLE FOR DISTRIBUTED ACOUSTIC SENSING WITH INCREASED ACOUSTIC SENSITIVITY
Methods and apparatus for performing Distributed Acoustic Sensing (DAS) using fiber optics with increased acoustic sensitivity are provided. Acoustic sensing of a wellbore, pipeline, or other... |
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US20060072869 |
Optical fiber position transducer for flow control valve in smart wells
A fiber optics position transducer is described (100) for flow control valve in smart wells, which comprises at least two load cells (10) instrumented with Bragg (FGB) network sensors and... |
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US20100128006 |
OPTICAL WAVEGUIDE AND OPTICAL TOUCH PANEL
An optical waveguide 30 having a bending groove 34 parallel to two long sides of a rectangular shape thereof. The optical waveguide 30 is bent along the bending groove 34 so as to come into close... |
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US20090060413 |
Anti-intrusion device for fences or the like
An anti-intrusion device for fences or the like, comprising at least one, preferably two or more cables (3), each one composed of at least one or a bundle of optical fibres (103) and of an outer... |
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US20090324161 |
FIBER OPTIC SHAPE SENSOR
A shape sensing system to determine the position and orientation of one link with respect to another link in a kinematic chain. An optical fiber is coupled to two or more links in a kinematic... |
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US20080226218 |
Collision detection optical fiber sensor
An optical fiber 1 includes a core 11 and a cladding material 12. In a collision detection optical fiber sensor 100, a plurality of linear members 2 and 3 are twisted around an outer periphery of... |
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US20120076453 |
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... |
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US20060233485 |
Underwater structure monitoring systems and methods
A system for remotely detecting properties of an underwater structure in a body of water comprising a sensor connectable to the structure; a first receiver which can be positioned at or near a top... |
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US20110007996 |
Optical Fiber Pipeline Monitoring System and Method Field
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... |
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US20140375980 |
FIBER SENSING SYSTEM BASED ON A BRAGG GRATING AND OPTICAL TIME DOMAIN REFLECTOMETRY
Optic fiber sensor characterized in that the sensing fiber is provided with a continuous Bragg grating covering the entire fiber length which is dedicated to sensing and along which spatially... |
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US20120321243 |
OPTICAL FIBER INSTRUMENT SYSTEM FOR DETECTING AND DECOUPLING TWIST EFFECTS
An instrument system that includes an elongate body, an optical fiber, and a detector is provided. The elongate body is capable of being twisted. The optical fiber includes a first portion coupled... |
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US20100303403 |
ON-LINE FIBER BRAGG GRATING DITHERING
An apparatus for determining a property, the apparatus including: an optical fiber having a series of fiber Bragg gratings, each fiber Bragg grating in the series being characterized by a light... |
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US20140050438 |
IMPACT SENSOR OF ACTIVE HOOD SYSTEM
An impact sensor of an active hood system includes a rear member, optical fiber sensors, a front member and membrane switch. Each of the optical fiber sensors is disposed on upper and lower... |
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US20140231636 |
FIBER OPTIC ACOUSTIC SENSOR ARRAYS, FIBER OPTIC SENSING SYSTEMS AND METHODS OF FORMING AND OPERATING THE SAME
A fiber optic acoustic sensing array. The fiber optic acoustic sensing array includes a core strength member and an optical fiber wound on the core strength member. The optical fiber includes a... |
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US20120243822 |
GETTING-ON/OFF DETERMINATION APPARATUS AND GETTING-ON/OFF DETERMINATION METHOD
A getting-on/off determination apparatus determines rider's getting-on/off for an inverted two-wheel vehicle that travels while maintaining the inverted state. The getting-on/off determination... |
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US20080211669 |
COMPOSITE WELDABLE PANEL WITH EMBEDDED DEVICES
A panel having a central panel element formed of a composite material, having peripheral edges formed of a weldable material, such as steel. In one form, the panel element is rectangular, and the... |
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US20100158435 |
SIDE-HOLE CANE WAVEGUIDE SENSOR
A side-hole optical cane for measuring pressure and/or temperature is disclosed. The side-hole cane has a light guiding core containing a sensor and a cladding containing symmetrical side-holes... |
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US20120308174 |
WELL-BORE SENSING
A sensor system for use in a wellbore has a fiber-optic cable and a tool connected to the cable and moveable through the well bore. The tool in turn has an array of members arranged around a... |
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US20100002982 |
Arrangement for monitoring a stressed body and method for the production thereof
A system serves to monitor a body exposed to high mechanical or thermal stress. The body has a surface that has at least one groove with two groove lateral walls which are oppositely disposed and... |
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US20150049981 |
FIBER OPTIC SENSING APPARATUS AND METHOD FOR SENSING PARAMETERS INVOLVING DIFFERENT PARAMETER MODALITIES
An optical-based sensing apparatus and method are provided. A sensing apparatus (10) may include a tube (30). An optical fiber (12) may be encased in the tube. A buffering layer (14) may be... |
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US20140345388 |
DETECTING BROADSIDE ACOUSTIC SIGNALS WITH A FIBER OPTICAL DISTRUBUTED ACOUSTIC SENSING (DAS) ASSEMBLY
A distributed fiber optic acoustic sensing system comprises an elongate body having an outer surface, an optical fiber disposed on the outer surface at a first predetermined wrap angle, and light... |
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US20110007997 |
FIBER-OPTIC TEMPERATURE SENSOR ASSEMBLY
A fiber-optic temperature sensor assembly comprises a cap with an inner cavity. A sensor member is received in the inner cavity of the cap. The sensor member has light-transmitting properties... |
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US20100202727 |
FIBER OPTIC SHAPE SENSOR
A shape sensing system to determine the position and orientation of one link with respect to another link in a kinematic chain. An optical fiber is coupled to two or more links in a kinematic... |
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US20150033868 |
TRANSVERSAL LOAD INSENSITIVE OPTICAL WAVEGUIDE, AND OPTICAL SENSOR COMPRISING A WAVE GUIDE
A transversal load insensitive optical waveguide includes a primary section having a core. The waveguide may further include an outer cladding. The primary section includes a primary section... |
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US20130345719 |
Systems and Methods for Reducing Measurement Error in Optical Fiber Shape Sensors
A shape sensing apparatus comprises an instrument including an elongated shaft with a neutral axis. The shape sensor also includes a first shape sensor with an elongated optical fiber extending... |
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US20110044578 |
Fixture for Shape-Sensing Optical Fiber in a Kinematic Chain
Localized strain is effectively eliminated in a shape sensing optical fiber where the fiber exits a link in a kinematic chain. In one aspect, the fiber is positioned in a channel within a fiber... |
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US20110194807 |
OPTICAL SENSOR
An optical sensor for detecting a substance includes a first waveguide and a second waveguide optically coupled via a directional coupler to the first waveguide. The sensor has a functional... |
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US20110133067 |
OPTICAL SENSOR HAVING A CAPILLARY TUBE AND AN OPTICAL FIBER IN THE CAPILLARY TUBE
A system for use in a well includes an optical cable for positioning in the well. An optical sensor is optically coupled to the optical cable, where the optical sensor has a capillary tube and an... |
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US20120314988 |
ROTATED SINGLE OR MULTICORE OPTICAL FIBER
An apparatus for estimating a shape, the apparatus including: an optical fiber configured to conform to the shape and having a first core offset from a centerline of the optical fiber, the first... |