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Class Information
Number: 250/227.23
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light conductor > With spectral frequency/wavelength discrimination
Description: Subject matter including means for selecting and transmitting light of one or more discrete wavelengths or wavelength bands by the light conductor(s) to the photocell(s).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7425696 |
Photoelectric oscillator |
Sep. 16, 2008 |
| 7411177 |
Multi-spectrum image capturing device and multi-spectrum illuminating device |
Aug. 12, 2008 |
| 7394953 |
Configurable integrated optical combiners and decombiners |
Jul. 1, 2008 |
| 7385177 |
Light guide rotation rate detector with coupled optical resonators |
Jun. 10, 2008 |
| 7355163 |
Direct measurement of Brillouin frequency in distributed optical sensing systems |
Apr. 8, 2008 |
| 7349591 |
Pressure compensated optical accelerometer, optical inclinometer and seismic sensor system |
Mar. 25, 2008 |
| 7348541 |
Optical channel monitoring system with simultaneous C-band and L-band detection |
Mar. 25, 2008 |
| 7333680 |
Fiber Bragg grating sensor system |
Feb. 19, 2008 |
| 7329852 |
Automatic background removal for input data having consecutive input points identification |
Feb. 12, 2008 |
| 7326917 |
Wear monitor for turbo-machine |
Feb. 5, 2008 |
| 7230228 |
Tunable temporal dispersion and compensated angular dispersion in optical switching systems |
Jun. 12, 2007 |
| 7208722 |
Measuring method and measuring apparatus for coherent crosstalk light |
Apr. 24, 2007 |
| 7186967 |
Optical transducer having optical fibers resiliently warped near optical devices and musical instrument using the same |
Mar. 6, 2007 |
| 7177025 |
Measuring specular reflectance of a sample |
Feb. 13, 2007 |
| 7157693 |
Optical wavelength interrogator |
Jan. 2, 2007 |
| 7060967 |
Optical wavelength interrogator |
Jun. 13, 2006 |
| 7041960 |
Bond separation inspection method using compressive thermal strain in optical sensor part |
May. 9, 2006 |
| 7041959 |
System and method for monitoring the performance of dense wavelength division multiplexing optical communications systems |
May. 9, 2006 |
| 6969842 |
Dispersion discrimination for wideband optical signals |
Nov. 29, 2005 |
| H2130 |
Laser-difference-frequency discriminator |
Nov. 1, 2005 |
| 6958467 |
Chirp measurement apparatus |
Oct. 25, 2005 |
| 6927377 |
Wavelength locking channel monitor |
Aug. 9, 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 |
| 6870152 |
Segmented photodetectors for detection and compensation of modal dispersion in optical waveguides |
Mar. 22, 2005 |
| 6833541 |
Dual-parameter optical waveguide grating sensing device and sensor |
Dec. 21, 2004 |
| 6822218 |
Method of and apparatus for wavelength detection |
Nov. 23, 2004 |
| 6815662 |
Apparatus and method for measuring optical signals by optical sampling |
Nov. 9, 2004 |
| 6797941 |
Reliable optical add/drop device |
Sep. 28, 2004 |
| 6693311 |
Wavelength selective detector |
Feb. 17, 2004 |
| 6680472 |
Device for measuring of optical wavelengths |
Jan. 20, 2004 |
| 6660995 |
Particle size analysis in a turbid media with a single-fiber, optical probe while using a visible spectrometer |
Dec. 9, 2003 |
| 6657186 |
Chromatic dispersion discriminator |
Dec. 2, 2003 |
| 6605804 |
Optical sensor |
Aug. 12, 2003 |
| 6586724 |
Chromatic dispersion discriminator |
Jul. 1, 2003 |
| 6548806 |
Apparatus for monitoring frequency of WDM signals using pilot tone |
Apr. 15, 2003 |
| 6545259 |
Optical wavelength monitor for a passive optical component |
Apr. 8, 2003 |
| 6525308 |
Apparatus and method for wavelength detection with fiber bragg grating sensors |
Feb. 25, 2003 |
| 6507013 |
Optical reference element and procedure for the spectral calibration of an optical spectrum analyzer |
Jan. 14, 2003 |
| 6504145 |
Method of excitation of an optical cavity for detecting gas traces |
Jan. 7, 2003 |
| 6501067 |
Isolation pad for protecting sensing devices on the outside of a conduit |
Dec. 31, 2002 |
| 6486462 |
Tunable optical add-drop multiplexer |
Nov. 26, 2002 |
| 6486466 |
Wide bandwidth raman amplifier having a substantially flat gain profile |
Nov. 26, 2002 |
| 6486958 |
Method and system for optical spectrum analysis with matched filter detection |
Nov. 26, 2002 |
| 6462863 |
System and method for resolving polarization mode dispersion in optical fibers |
Oct. 8, 2002 |
| 6426496 |
High precision wavelength monitor for tunable laser systems |
Jul. 30, 2002 |
| 6407376 |
Optical channel monitoring system with self-calibration |
Jun. 18, 2002 |
| 6388248 |
Control voltage isolation system for electrical rotating apparatus utilizing fiber optics and associated method |
May. 14, 2002 |
| 6380534 |
Distributed strain and temperature sensing system |
Apr. 30, 2002 |
| 6329648 |
Phase locked loop fiber optic sensor system |
Dec. 11, 2001 |
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