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Class Information
Number: 250/227.27
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light conductor > 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 temporarily, and the condition being sensed by the light conductor affects the coherent light to present an interferometric pattern 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 |
| 7365856 |
Method of motion correction in optical coherence tomography imaging |
Apr. 29, 2008 |
| 7339678 |
Method and system of using odd harmonics for phase generated carrier homodyne |
Mar. 4, 2008 |
| 7327462 |
Method and apparatus for direct detection of signals from a differential delay heterodyne interferometric system |
Feb. 5, 2008 |
| 7282698 |
System and method for monitoring a well |
Oct. 16, 2007 |
| 7262902 |
High gain resonant modulator system and method |
Aug. 28, 2007 |
| 7116421 |
Device and method for differential sensing of hydrogen gas using thermoabsorptance or thermoreflectance |
Oct. 3, 2006 |
| 7076127 |
Optical switch and safety apparatus using the same |
Jul. 11, 2006 |
| 7054521 |
Architecture for large optical fiber array using standard 1.times.2 couplers |
May. 30, 2006 |
| 7053359 |
Optical multi-gate device and method |
May. 30, 2006 |
| 7012245 |
Calculation of sensor array induced phase angle |
Mar. 14, 2006 |
| 6989903 |
Polarization diversity detector mask selection algorithm |
Jan. 24, 2006 |
| 6973223 |
Device for providing polarized light |
Dec. 6, 2005 |
| 6899849 |
Integrated sensor |
May. 31, 2005 |
| 6897434 |
All-fiber photon-pair source for quantum communications |
May. 24, 2005 |
| 6847034 |
Downhole sensing with fiber in exterior annulus |
Jan. 25, 2005 |
| 6815662 |
Apparatus and method for measuring optical signals by optical sampling |
Nov. 9, 2004 |
| 6809823 |
Method for the calibration and alignment of multiple multi-axis motion stages for optical alignment to a planar waveguide device and system |
Oct. 26, 2004 |
| 6640647 |
System for structural strain sensing by optical fiber sensor |
Nov. 4, 2003 |
| 6549687 |
System and method for measuring physical, chemical and biological stimuli using vertical cavity surface emitting lasers with integrated tuner |
Apr. 15, 2003 |
| 6545261 |
Fiber optic alignment system and method |
Apr. 8, 2003 |
| 6541759 |
Interferometry system having a dynamic beam-steering assembly for measuring angle and distance and employing optical fibers for remote photoelectric detection |
Apr. 1, 2003 |
| 6495819 |
Dual-interferometer method for measuring bending of materials |
Dec. 17, 2002 |
| 6421164 |
Interferometeric imaging with a grating based phase control optical delay line |
Jul. 16, 2002 |
| 6403949 |
Method and apparatus for correcting systematic error in a wavelength measuring device |
Jun. 11, 2002 |
| 6355928 |
Fiber optic tomographic imaging of borehole fluids |
Mar. 12, 2002 |
| 6282011 |
Grating based phase control optical delay line |
Aug. 28, 2001 |
| 6211964 |
Method and structure for incorporating fiber optic acoustic sensors in a seismic array |
Apr. 3, 2001 |
| H1937 |
Laser barometer |
Feb. 6, 2001 |
| 6166816 |
Combination fiber optic current/voltage sensor |
Dec. 26, 2000 |
| 6134281 |
Method and apparatus for calibration of a signal processing system utilizing digital down converters |
Oct. 17, 2000 |
| 6134015 |
Normalization method for fiber optic sensor system |
Oct. 17, 2000 |
| 6125216 |
Strain isolated optical fibre bragg grating sensor |
Sep. 26, 2000 |
| 6023331 |
Fiber optic interferometric sensor and method by adding controlled amounts of circular birefringence in the sensing fiber |
Feb. 8, 2000 |
| 6015969 |
Multiple-wavelength spectroscopic quantitation of light-absorbing species in scattering media |
Jan. 18, 2000 |
| 6008900 |
Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system |
Dec. 28, 1999 |
| 5999284 |
Optical detection and logic devices with latching function |
Dec. 7, 1999 |
| 5991026 |
Apparatus for multiplexing fibre-optic sensing interferometers |
Nov. 23, 1999 |
| 5969341 |
Optical integrated voltage sensor for optically measuring the magnitude of a voltage |
Oct. 19, 1999 |
| 5959294 |
Method and apparatus for interrogation of fiber optic interferometric sensors in multi-channel applications |
Sep. 28, 1999 |
| 5894531 |
Method and apparatus for detection of ultrasound using a fiber-optic interferometer |
Apr. 13, 1999 |
| 5892582 |
Fabry Perot/fiber Bragg grating multi-wavelength reference |
Apr. 6, 1999 |
| 5867258 |
System for multiplexed high resolution measurement of frequency variations in multimode fiber laser acoustic sensors |
Feb. 2, 1999 |
| 5852496 |
Method and device for measuring polarization dispersion of an optical fiber |
Dec. 22, 1998 |
| 5832157 |
Fiber optic acoustic emission sensor |
Nov. 3, 1998 |
| 5818584 |
Multiport optical waveguide interferometer having a flat wavelength response |
Oct. 6, 1998 |
| 5798834 |
Interferometric fiber optic method and apparatus for obtaining absolute static measurement using an optical frequency-time profile |
Aug. 25, 1998 |
| 5787212 |
Optical coupler sensor with movable optical waveguide |
Jul. 28, 1998 |
| 5786930 |
Optical frequency sweep signal generator |
Jul. 28, 1998 |
| 5710630 |
Method and apparatus for determining glucose concentration in a biological sample |
Jan. 20, 1998 |
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