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Class Information
Number: 398/72
Name: Optical communications > Multiplex > Broadcast and distribution system > Wdm > Hub or central office > Including subscribers > Bidirectional
Description: Subject matter wherein communication between the hub or central station and the subscribers is two way.

Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8705969 Optical backhaul network for wireless broadband service Apr. 22, 2014
8705970 Method for data processing in an optical network, optical network component and communication system Apr. 22, 2014
8687962 Method and arrangement for transmitting signals in a point to multipoint network Apr. 1, 2014
8687963 Method, system and device for optical network termination configuration Apr. 1, 2014
8687964 In-band control mechanism Apr. 1, 2014
8682162 Method and system for providing a return path for signals generated by legacy terminals in an optical network Mar. 25, 2014
8682166 Subcarrier multiplexing type optical communication method and passive optical network using the same Mar. 25, 2014
8682164 Optical wavelength division node Mar. 25, 2014
8682163 Detecting method, apparatus, and system in an optical distribution network Mar. 25, 2014
8670667 Access multiplexers and methods for multiplexing telecommunication signals using an arrayed media converter Mar. 11, 2014
8660428 Variable channel spacing in a coherent transmission system Feb. 25, 2014
8655174 Wavelength division multiplexer compatible with two types of passive optical networks Feb. 18, 2014
8655175 Method and apparatus for enabling multiple passive optical networks to share one or more sources Feb. 18, 2014
8649681 Methods and devices for wavelength alignment in WDM-PON Feb. 11, 2014
8649682 Passive optical network Feb. 11, 2014
8644708 Coupled seed light injection for wavelength division multiplexing passive optical networks Feb. 4, 2014
8644707 Bidirectional optical amplifier arrangement Feb. 4, 2014
8639119 Remote node for wavelength-division-multiplexed passive optical network Jan. 28, 2014
8634716 Data transmission network Jan. 21, 2014
8634717 DDoS attack detection and defense apparatus and method using packet data Jan. 21, 2014
8634719 Systems and methods for enabling different network nodes of a network access system to share a backhaul communications link Jan. 21, 2014
8625990 Optical line terminal, remote node unit, optical transmission method and system thereof Jan. 7, 2014
8620159 Modulation in an optical network Dec. 31, 2013
8611745 Passive optical network communication system Dec. 17, 2013
8606100 WDM-TDM PON remote terminal and WDM-TDM PON link protection system Dec. 10, 2013
8606109 Technique for forwarding packets in a gigabit passive optical network (GPON) Dec. 10, 2013
8600234 Method and apparatus for link sharing among multiple epons Dec. 3, 2013
8600235 Network with sourceless clients Dec. 3, 2013
8594506 Method and system for propagating upstream cable modem signals and RF return video control signals over the same optical network Nov. 26, 2013
8582970 Office-side line concentration device, access control device, and computer program therefor Nov. 12, 2013
8582966 Method and apparatus for protection switching in passive optical network Nov. 12, 2013
8577220 Method and system for protecting against communication loss in an optical network system Nov. 5, 2013
8571420 Apparatus and method for driving wavelength-independent light source Oct. 29, 2013
8571422 Burst transmission method, and receiver resetting method and apparatus in a passive optical network Oct. 29, 2013
8566896 Addressable network interface units suitable for use in FTTX and RFOG networks and related methods of controlling bandwidth allocation and identifying noise sources in such networks Oct. 22, 2013
8565601 Communication method for optical communication system, optical communication system, slave station apparatus, control device, and computer program Oct. 22, 2013
8565599 System and method for transmitting optical markers in a passive optical network system Oct. 22, 2013
8559817 Communication system comprising a tunable laser Oct. 15, 2013
8559818 Methods and systems for delivery of multiple passive optical network services Oct. 15, 2013
8559819 Information transfer and receiving method, system, and device Oct. 15, 2013
8554080 Failsafe optical splitter and method to isolate faults in a passive optical network Oct. 8, 2013
8554079 Wavelength division and time division multiplex mixing passive optical network system, terminal and signal transmission method Oct. 8, 2013
8554078 Passive optical network with plural optical line terminals Oct. 8, 2013
8548327 Dynamic management of polling rates in an ethernet passive optical network (EPON) Oct. 1, 2013
8548328 Transparent overhead in a passive optical network that supports enhanced features Oct. 1, 2013
8548334 Dynamic intelligent bidirectional optical access communication system with object/intelligent appliance-to-object/intelligent appliance interaction Oct. 1, 2013
8542998 Passive optical network system and sleep time determination method Sep. 24, 2013
8538259 Optical access network system Sep. 17, 2013
8532485 System and method for operating transparent node for WDM shared "virtual ring" networks Sep. 10, 2013
8532488 Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity to support voice and/or data services Sep. 10, 2013

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