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Class Information
Number: 250/227.19
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light conductor > Condition responsive light guide (e.g., light guide is physically affected by parameter sensed which results in light conveyed to the photocell) > With coherent interferrometric light
Description: Subject matter wherein the light waves transmitted by the light conductor are coherent, i.e., the phases of the waves are substantially in step spatially and temporally, and the condition sensed by the light conductor affects the coherent light so that an interferometric pattern is presented to the photocell.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7385177 |
Light guide rotation rate detector with coupled optical resonators |
Jun. 10, 2008 |
| 7373056 |
High-voltage component with optical fiber and method for producing it |
May. 13, 2008 |
| 7365856 |
Method of motion correction in optical coherence tomography imaging |
Apr. 29, 2008 |
| 7327462 |
Method and apparatus for direct detection of signals from a differential delay heterodyne interferometric system |
Feb. 5, 2008 |
| 7208722 |
Measuring method and measuring apparatus for coherent crosstalk light |
Apr. 24, 2007 |
| 7075286 |
Fiber-optic current sensor |
Jul. 11, 2006 |
| 7053359 |
Optical multi-gate device and method |
May. 30, 2006 |
| 7038188 |
Non-demolition photon detector that preserves input state characteristics |
May. 2, 2006 |
| 7012245 |
Calculation of sensor array induced phase angle |
Mar. 14, 2006 |
| 6982790 |
Coherent imaging in turbid media |
Jan. 3, 2006 |
| 6937151 |
Method of perimeter barrier monitoring and systems formed for that purpose |
Aug. 30, 2005 |
| 6911645 |
DWDM channel detection system |
Jun. 28, 2005 |
| 6899849 |
Integrated sensor |
May. 31, 2005 |
| 6901101 |
Optical sensor for measuring physical and material properties |
May. 31, 2005 |
| 6897948 |
Variable-wavelength light source apparatus |
May. 24, 2005 |
| 6897434 |
All-fiber photon-pair source for quantum communications |
May. 24, 2005 |
| 6888125 |
Fiber optic sensing systems and method of use thereof |
May. 3, 2005 |
| 6876786 |
Fiber-optic sensing system for distributed detection and localization of alarm conditions |
Apr. 5, 2005 |
| 6838660 |
Fiber optic sensor system and method for measuring the pressure of media |
Jan. 4, 2005 |
| 6798524 |
Phase difference calculation method, device, and system using optical fiber ring interference sensor |
Sep. 28, 2004 |
| 6768098 |
Fibre optic grating sensor |
Jul. 27, 2004 |
| 6748128 |
Device for changing the length of the running path of an electromagnetic wave |
Jun. 8, 2004 |
| 6744035 |
Passive, temperature compensated techniques for tunable filter calibration in bragg-grating interrogation systems |
Jun. 1, 2004 |
| 6618523 |
Unbalanced fiber optic Michelson interferometer as an optical pick-off |
Sep. 9, 2003 |
| 6603113 |
Gyro comprising a ring laser in which beams of different oscillation frequencies coexist and propagate in mutually opposite circulation directions, driving method of gyro, and signal detecting |
Aug. 5, 2003 |
| 6597458 |
Method and system for stabilizing and demodulating an interferometer at quadrature |
Jul. 22, 2003 |
| 6571027 |
Method and devices for time domain demultiplexing of serial fiber bragg grating sensor arrays |
May. 27, 2003 |
| 6566648 |
Edge triggered apparatus and method for measuring strain in bragg gratings |
May. 20, 2003 |
| 6563967 |
Fiber optic displacement sensor |
May. 13, 2003 |
| 6515276 |
Heterodyne optical spectrum analyzer with provisions for intensity noise subtraction |
Feb. 4, 2003 |
| 6515467 |
Method and system for optically detecting an electric current by means of light signals having different wavelengths |
Feb. 4, 2003 |
| 6495819 |
Dual-interferometer method for measuring bending of materials |
Dec. 17, 2002 |
| 6490045 |
Fibre optic sensor |
Dec. 3, 2002 |
| 6459093 |
Dynamic light scattering at multiple discrete wavelengths, using multiple mono-mode fibres or for detecting the velocity of scattering sensors |
Oct. 1, 2002 |
| 6450037 |
Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe |
Sep. 17, 2002 |
| 6423963 |
Safety latch for Raman amplifiers |
Jul. 23, 2002 |
| 6365891 |
Optical sensor array having multiple rungs between distribution and return buses and having amplifiers in the buses to equalize return signals |
Apr. 2, 2002 |
| 6321010 |
Optical microstructure and method of manufacture |
Nov. 20, 2001 |
| 6282334 |
Large scale WDM/TDM sensor array employing erbium-doped fiber amplifiers |
Aug. 28, 2001 |
| 6274863 |
Selective aperture arrays for seismic monitoring |
Aug. 14, 2001 |
| 6262574 |
Sensor for measuring magnetic field strength and temperature for an electric motor |
Jul. 17, 2001 |
| 6259089 |
Integrated optics rotation sensor |
Jul. 10, 2001 |
| 6212306 |
Method and device for time domain demultiplexing of serial fiber Bragg grating sensor arrays |
Apr. 3, 2001 |
| 6195162 |
Seismic sensor with interferometric sensing apparatus |
Feb. 27, 2001 |
| 6084233 |
Optical sensor array having multiple rungs between distribution and return buses and having amplifiers in the buses to equalize return signals |
Jul. 4, 2000 |
| 6049506 |
Optical fiber Sagnac interferometer which identifies harmonically related nulls in the detected spectrum |
Apr. 11, 2000 |
| 6018390 |
Integrated optics waveguide accelerometer with a proof mass adapted to exert force against the optical waveguide during acceleration |
Jan. 25, 2000 |
| 6008898 |
Method and apparatus for measuring acceleration and vibration using freely suspended fiber sensor |
Dec. 28, 1999 |
| 5994891 |
Electrically small, wideband, high dynamic range antenna having a serial array of optical modulators |
Nov. 30, 1999 |
| 5982009 |
Integrated device of cantilever and light source |
Nov. 9, 1999 |
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