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Class Information
Number: 398/69
Name: Optical communications > Multiplex > Broadcast and distribution system > Wdm > With variable frequency channel assignment
Description: Subject matter wherein a channel is not limited to a fixed frequency.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8693871 System for routing and wavelength assignment in wavelength division multiplexing optical networks Apr. 8, 2014
8687962 Method and arrangement for transmitting signals in a point to multipoint network Apr. 1, 2014
8649681 Methods and devices for wavelength alignment in WDM-PON Feb. 11, 2014
8644704 Method and system for an adaptive channel grid of an optical network Feb. 4, 2014
8638489 Filter-less generation of coherent optical subcarriers Jan. 28, 2014
8634719 Systems and methods for enabling different network nodes of a network access system to share a backhaul communications link Jan. 21, 2014
8630541 Wavelength division multiplexing transmission apparatus for controlling the wavelength of an FBTL optical module, and wavelength control method employed for wavelength division multiplexing tr Jan. 14, 2014
8630542 Distributing wavelength compatible with signaling protocols Jan. 14, 2014
8630543 Port wavelength restriction encoding in wavelength switched optical network Jan. 14, 2014
8611744 Monitoring system employing carrier recovery Dec. 17, 2013
8582966 Method and apparatus for protection switching in passive optical network Nov. 12, 2013
8559817 Communication system comprising a tunable laser Oct. 15, 2013
8553725 Super-channel assignment using a flexible grid Oct. 8, 2013
8554079 Wavelength division and time division multiplex mixing passive optical network system, terminal and signal transmission method Oct. 8, 2013
8532491 Optical multiplexing terminating device, passive optical network system and method for allocating wavelength Sep. 10, 2013
8519803 Resonator systems and methods for tuning resonator systems Aug. 27, 2013
8521030 Transceiver apparatus, communication control method, and concentrator Aug. 27, 2013
8509619 Communication control method, station side device, subscriber side device, and communication system Aug. 13, 2013
8472802 Two-phase optical communication methods and optical bus systems for implementing the same Jun. 25, 2013
8467681 Method for characterizing wavelength switched optical network signal characteristics and network element compatibility constraints for generalized multi-protocol label switching Jun. 18, 2013
8457316 Architecture for reconfigurable quantum key distribution networks based on entangled photons by wavelength division multiplexing Jun. 4, 2013
8447181 Method and apparatus for displaying and identifying available wavelength paths across a network May. 21, 2013
8447182 Multi-wavelength transponder with wavelength division multiplexing modules May. 21, 2013
8442399 Port wavelength restriction encoding in wavelength switched optical network May. 14, 2013
8428460 Wavelength division multiplexing passive optical network having multiple branches of optical distribution Apr. 23, 2013
8401386 Optical transmission apparatus Mar. 19, 2013
8396366 Optical safety implementation in protection switching modules Mar. 12, 2013
8380087 High performance gigabit passive optical network Feb. 19, 2013
8369706 Open access service model using WDM-PON Feb. 5, 2013
8364039 Optical network and optical signal modulation method thereof Jan. 29, 2013
8346083 Bandwidth allocation method and passive optical network system Jan. 1, 2013
8335235 Methods and apparatus for extending MAC control message in EPON Dec. 18, 2012
8331783 Optical communication system, optical communication apparatus, and optical communication method thereof Dec. 11, 2012
8326149 Dynamic bandwidth allocation in a passive optical network in which different optical network units transmit at different rates Dec. 4, 2012
8315523 Communication system, terminating apparatus, and PON virtualization method for use therein Nov. 20, 2012
8290370 Wavelength division multiplexing passive optical network for providing both of broadcasting service and communication service and central office used thereof Oct. 16, 2012
8285143 Method of allocating bandwidth of passive optical network Oct. 9, 2012
8270792 High-resolution multi-level frequency channelizers Sep. 18, 2012
8260135 Passive optical network system and wavelength assignment method Sep. 4, 2012
8254793 Tuning select fiber optic channels for channel monitoring Aug. 28, 2012
8238748 Method for wavelength assignment in a WDM network Aug. 7, 2012
8238749 Distributing wavelength compatible with signaling protocols Aug. 7, 2012
8233795 Apparatus and method for medium access control in an optical packet-switched network and the network thereof Jul. 31, 2012
8224190 Channel assignment method and apparatus for wavelength-division-multiplexed transmission system Jul. 17, 2012
8218969 OFDM transponder interface with variable bit transfer rate in optical communications systems Jul. 10, 2012
8213797 DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions Jul. 3, 2012
8184977 Optical line terminal capable of active bandwidth allocation for passive optical network system May. 22, 2012
8180220 Protocol configuration method May. 15, 2012
8155524 Method and apparatus for transmitting multiple channels in a wavelength division multiplexed (WDM) optical communication system with reduced raman crosstalk and nonlinear distortions Apr. 10, 2012
8139940 Wavelength division multiplexing transmission system and remote apparatus and station apparatus used therein Mar. 20, 2012

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