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Class Information
Number: 398/9
Name: Optical communications > Diagnostic testing
Description: Subject matter including means for monitoring or testing for evaluating an operational condition of an optical communication system or its component.










Sub-classes under this class:

Class Number Class Name Patents
398/25 Determination of communication parameter 539
398/17 Fault detection 293
398/10 Fault location 140
398/16 Test signal 222


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
8705953 Distance measurement Apr. 22, 2014
8705955 Optical access network, secondary network side termination node of an optical access network, and method for operating a network side termination node Apr. 22, 2014
8705956 Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systems Apr. 22, 2014
8687966 Fiber optic transceiver module with optical diagnostic data output Apr. 1, 2014
8682157 Optical communication system, optical receiving terminal, and optical signal fault detection method Mar. 25, 2014
8682158 Systems and methods for detecting line flapping in optical networks Mar. 25, 2014
8682172 Optoelectronic communications assembly having an electrical and optical interface Mar. 25, 2014
8660425 Optical transmitting device and optical receiving device Feb. 25, 2014
8660424 Scalable high speed gigabit active bundle link and tester Feb. 25, 2014
8660423 Circuit, system and method for monitoring an optical fiber network Feb. 25, 2014
8649684 Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof Feb. 11, 2014
8649736 Operation test method for a circuit for transmitting and receiving signals Feb. 11, 2014
8634713 Fibre monitoring in optical networks Jan. 21, 2014
8634290 Apparatus and method for protection switching for mesh topolgy Jan. 21, 2014
8631151 Techniques for guaranteeing bandwidth with aggregate traffic Jan. 14, 2014
8625985 Router having dual propagation paths for packets Jan. 7, 2014
8615063 Level transition determination circuit and method for using the same Dec. 24, 2013
8606102 Test interface device, test system and optical interface memory device Dec. 10, 2013
8600233 Arbitration of optical communication bus Dec. 3, 2013
8594500 Connection loss scheme for fiber connections in optical communication system Nov. 26, 2013
8594497 Multi-interface protocol analysis system Nov. 26, 2013
8588606 Optical network monitor PCB Nov. 19, 2013
8559813 Passband reflectometer Oct. 15, 2013
8554071 Optical transmission apparatus and continuity testing method Oct. 8, 2013
8538269 DMM wireless adapter Sep. 17, 2013
8538257 Apparatus and method for performing line analysis of continuous data signals Sep. 17, 2013
8526824 Correlation systems and methods with error compensation Sep. 3, 2013
8498533 Robust ranging method Jul. 30, 2013
8493864 Cable far end port identification using repeating link state patterns Jul. 23, 2013
8489369 Methods for calculating multimode fiber system bandwidth and manufacturing improved multimode fiber Jul. 16, 2013
8483559 System and method for monitoring a branched optical communication system Jul. 9, 2013
8462906 Apparatus and methods for detection and correction of transmitter duty cycle distortion Jun. 11, 2013
8452172 Testing an optical network May. 28, 2013
8452173 Optical network, monitoring unit and monitoring method May. 28, 2013
8428457 Optical passive network system and its operation method Apr. 23, 2013
8411259 Optical time-domain reflectometer Apr. 2, 2013
8406620 Passive optical network (PON) in-band optical time domain reflectometer (OTDR) Mar. 26, 2013
8406621 Method and apparatus for measuring a factor characterizing a balanced detection device Mar. 26, 2013
8396360 Communicating information Mar. 12, 2013
8391708 Laser eye safety and fiber receptacle presence detection Mar. 5, 2013
8385746 Optical interface device, and abnormality monitoring method for input frequency deviation Feb. 26, 2013
8364034 In-band optical noise measurement using differential polarization response Jan. 29, 2013
8364036 Method and system for controlling optical networks Jan. 29, 2013
8358930 In-band optical signal to noise ratio determination method and system Jan. 22, 2013
8355630 Polarity inversion detection for an optical circuit switch Jan. 15, 2013
8351782 Polarity inversion detection for an optical circuit switch Jan. 8, 2013
8311408 Method and apparatus for end of life of small form-factor pluggable (SFP) Nov. 13, 2012
8290362 Predictive end-to-end management for SONET networks Oct. 16, 2012
8290361 Transmission line monitoring system Oct. 16, 2012
8279425 Frequency domain reflectometry (FDR) lethality assessment method and system for determining impact point and damage propagation in detection surface Oct. 2, 2012

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19










 
 
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