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Class Information
Number: 356/73.1
Name: Optics: measuring and testing > For optical fiber or waveguide inspection
Description: Subject matter wherein there is means to examine one or more transparent elongated structures (e.g., rods, fibers, or pipes) which are used to transmit light rays from one point to another within the confines of their outer surface, and involving internal reflections or modal transmission.

Patents under this class:

Patent Number Title Of Patent Date Issued
8077298 Apparatus for monitoring optical obstructions in an optical split network and method thereof Dec. 13, 2011
8073294 Remote optical fiber surveillance system and method Dec. 6, 2011
8058869 Fiber laser magnetic field sensor Nov. 15, 2011
8054455 Optical amplifier provided with control function of pumping light, and optical transmission system using the same Nov. 8, 2011
8045174 Assessing a network Oct. 25, 2011
8045143 Optical phase domain reflectometer Oct. 25, 2011
8040523 Measurement method of chromatic dispersion of optical beam waveguide using interference fringe measurement system Oct. 18, 2011
8040496 System and method for an illumination-quality test Oct. 18, 2011
8027584 Sensing a disturbance Sep. 27, 2011
8023833 Optical receivers with controllable transfer function bandwidth and gain imbalance Sep. 20, 2011
8023774 Method, apparatus and system for minimally intrusive fiber identification Sep. 20, 2011
8014670 Method and apparatus for testing and monitoring data communications in the presence of a coupler in an optical communications network Sep. 6, 2011
8013987 Method and apparatus for fiber optic signature recognition Sep. 6, 2011
8013986 Measuring brillouin backscatter from an optical fibre using channelisation Sep. 6, 2011
8013985 Methods of measuring the refractive index profile of a transparent cylindrical object Sep. 6, 2011
8009279 Characterization of non-linear optical materials using bragg coupling Aug. 30, 2011
8005323 Method and apparatus for generation and transmission of high energy optical pulses for long range measurements Aug. 23, 2011
7999930 Detection system and optical fiber for use in such system Aug. 16, 2011
7999928 Method and system for combined Raman and LIBS detection Aug. 16, 2011
7997792 Optical fiber temperature sensor Aug. 16, 2011
7995874 Optical fiber distribution type sensor and optical fiber distribution type detecting method Aug. 9, 2011
7995198 Optical fiber feature distribution sensor Aug. 9, 2011
7995197 Distributed backscattering Aug. 9, 2011
7986401 Birefringent fibers orientation measurement Jul. 26, 2011
7983570 Direct detection differential polarization-phase-shift keying for high spectral efficiency optical communication Jul. 19, 2011
7983567 Method and system for polarization modem dispersion compensation Jul. 19, 2011
7982865 Method and device for monitoring an optical amplifier, in particular, an optical fiber amplifier Jul. 19, 2011
7978319 Optical switching method and optical switch Jul. 12, 2011
7973914 Physical quantity measuring apparatus utilizing optical frequency domain reflectometry and method for temperature and strain measurement using the apparatus Jul. 5, 2011
7969562 Method and apparatus for measuring the birefringence autocorrelation length in optical fibers Jun. 28, 2011
7969561 Apparatus and method for monitoring extinction ratio of optical signals Jun. 28, 2011
7961331 Sensing a disturbance along an optical path Jun. 14, 2011
7956993 Method for increasing accuracy of measurement of mean polarization mode dispersion Jun. 7, 2011
7956992 Optical cable testing Jun. 7, 2011
7952772 Photonic crystal fiber sensor May. 31, 2011
7952695 Scanning spectrometer with multiple photodetectors May. 31, 2011
7948615 Non-destructive testing of an integrated optical coupler in an integrated optical circuit May. 24, 2011
7948614 Optical-fiber-characteristic measuring device and optical-fiber-characteristic measuring method May. 24, 2011
7947945 Fiber optic sensing system, method of using such and sensor fiber May. 24, 2011
7945160 Method and system of monitoring a data transmission link, particularly an optical, bidirectional data transmission link May. 17, 2011
7920253 Polarization optical time domain reflectometer and method of determining PMD Apr. 5, 2011
7916983 Signal identifying apparatus for an optical fiber Mar. 29, 2011
7907285 Scattered light measuring device Mar. 15, 2011
7894702 Method and apparatus of obtaining directivity Feb. 22, 2011
7894049 Method and device for measuring polarization state and polarization mode dispersion in photonic transmission systems Feb. 22, 2011
7889332 Physical quantity measuring apparatus utilizing optical frequency domain reflectometry, and method for simultaneous measurement of temperature and strain using the apparatus Feb. 15, 2011
7889331 Bidirectional optical module and optical time domain reflectometer equipped with the bidirectional optical module Feb. 15, 2011
7884927 Power transmission control device, non-contact power transmission system, power transmitting device, electronic instrument, and waveform monitor circuit Feb. 8, 2011
7880868 Optical time domain reflectometer Feb. 1, 2011
7876426 Optical topology for multimode and singlemode OTDR Jan. 25, 2011

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