Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2003-05-01
2008-10-14
Leung, Christina Y (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S076000
Reexamination Certificate
active
07437073
ABSTRACT:
Disclosed herein is a system for providing dynamic service using optical sub-carrier multiplexing type multi-channel access and method of controlling the same. The system includes a plurality of optical sub-carrier multiplexing modems, an optical gigabit-Ethernet switch and a plurality of wavelength division multiplexing couplers. The optical sub-carrier multiplexing modems transmit user traffic using multiple optical sub-carrier channel control. The optical gigabit-Ethernet switch is connected to an access network upstream and to the optical sub-carrier multiplexing modems downstream to manage a plurality of wavelengths and a plurality of optical sub-carrier channels according to the wavelengths. The wavelength division multiplexing couplers connect the plurality of optical sub-carrier multiplexing modems with the optical gigabit-Ethernet switch, perform aggregation and branching of a certain wavelength and transmit it.
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Electrical add-drop multiplexing for optical communications networks utilizing frequency division multiplexing, 13 pages.
IEEE Communications Magazine, Feb. 2002, pp. 66-73.
Kim Byoung Whi
Kim Tae Yeon
Lee Hyeong Ho
Yoo Jeong Ju
Yoon Hyeon Ho
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Leung Christina Y
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