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Class Information
Number: 398/19
Name: Optical communications > Diagnostic testing > Fault detection > Switch
Description: Subject matter wherein the component comprises an optical switch which opens or closes circuit, completes or breaks a path, or selects paths or circuits.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8712235 Transmission apparatus and network protection method Apr. 29, 2014
8655165 Light transmission device, optical relay device, optical wavelength multiplexing transmission apparatus, and light transmission method Feb. 18, 2014
8649678 Frame processing apparatus, optical receiving apparatus, optical transceiving apparatus, optical transmission system, and frame processing controlling method Feb. 11, 2014
8611740 System and method for protecting an extended passive optical network Dec. 17, 2013
8577220 Method and system for protecting against communication loss in an optical network system Nov. 5, 2013
8554071 Optical transmission apparatus and continuity testing method Oct. 8, 2013
8509624 Transceiver module sleep mode Aug. 13, 2013
8452187 Bi-directional, compact, multi-path and free space channel replicator May. 28, 2013
8396361 Method for the protection of a passive optical transmission network as well as a passive optical transmission network with a corresponding protection mechanism Mar. 12, 2013
8380061 Method, system and device for protecting long-reach passive optical network Feb. 19, 2013
8374500 SONET/SDH transmission apparatus Feb. 12, 2013
8358929 Network protection switching mechanisms and methods of network protection 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
8335428 Method and system for protection switching Dec. 18, 2012
8331744 Optical switch Dec. 11, 2012
8290362 Predictive end-to-end management for SONET networks Oct. 16, 2012
8244125 Passive optical network protection switching Aug. 14, 2012
8233791 Methods, systems, and computer readable media for providing virtual 1:N automatic protection switching (APS) and dynamic, in service configuration change for optical network interface equipmen Jul. 31, 2012
8233792 Switchable fiber termination Jul. 31, 2012
8224180 Method and system for protection switching Jul. 17, 2012
8175454 Fault locator for long haul transmission system May. 8, 2012
8160061 Redundant network shared switch Apr. 17, 2012
8155515 Method and apparatus for sharing common capacity and using different schemes for restoring telecommunications networks Apr. 10, 2012
8155517 Optical packet switching apparatus Apr. 10, 2012
8145054 Single-fiber protection in telecommunications networks Mar. 27, 2012
8135273 Systems and methods of optical path protection for distributed antenna systems Mar. 13, 2012
8116626 Optical transmission apparatus and optical attenuation amount control method Feb. 14, 2012
8116623 Multi-ring network operating method and system Feb. 14, 2012
8023819 Method and apparatus for network fault detection and protection switching using optical switches with integrated power detectors Sep. 20, 2011
8000600 Method and an apparatus for preventing traffic interruptions between client ports exchanging information through a communication network Aug. 16, 2011
7995916 Verification of path integrity in optical switch network Aug. 9, 2011
7965938 Method for mesh optical network service restoration Jun. 21, 2011
7936990 Method and node apparatus for traffic protection in optical transport network May. 3, 2011
7933517 Single-fiber protection in telecommunications networks Apr. 26, 2011
7920786 Single-fiber protection in telecommunications networks Apr. 5, 2011
7903968 Optical network transmission channel failover switching device Mar. 8, 2011
RE42095 Method for transferring utility optical signals and optical-line network Feb. 1, 2011
7877008 WDM layer-based optical chanel protecting device and method thereof Jan. 25, 2011
7848646 Optical, network, node apparatus and method for recovery path fault Dec. 7, 2010
7805078 Integrated electrical/optical hybrid communication system with revertive hitless switch Sep. 28, 2010
7805075 Methods of restoration in an ultra-long haul optical network Sep. 28, 2010
7805073 Systems and methods of optical path protection for distributed antenna systems Sep. 28, 2010
7787764 Optical network transmission channel failover switching device Aug. 31, 2010
7764881 Optical apparatus and optical cross connect apparatus Jul. 27, 2010
7724654 Method for synchronized trunk failover and failback in a FC-AL switching environment May. 25, 2010
7725025 Switchable fiber termination May. 25, 2010
7672585 Optical switch system Mar. 2, 2010
7627244 Optical transmission apparatus, continuity testing method therein, and optical transmission system Dec. 1, 2009
7596290 Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching Sep. 29, 2009

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