Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2003-06-20
2008-08-26
Pascal, Leslie (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S067000, C398S157000, C398S092000, C398S072000
Reexamination Certificate
active
07418204
ABSTRACT:
A passive optical network system is disclosed that simultaneously provides both broadcasting service and data service. The passive optical network (PON) amplifies the optical signals for the broadcasting service in an optical amplifier media of the local office by pumping optical signals generated from the central office and provides the optical signals for the broadcasting service to the subscriber terminals. Therefore, the present invention can simultaneously provide broadcasting service and data service for more subscribers without reducing the number of subscribers to the PON. Also, the present invention uses a plurality of optical sources for the data service and the broadcasting service and receives the optical signals generated from the optical sources by using a plurality of optical receivers in the subscriber terminals, and thus can provide a greater amount and variety of data services and broadcasting services.
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“Bidirectional Passive Optical Network for the Transmission of WDM Channels with Digital Broadcast Video Signals,” OFC, Mar. 20, 2002, pp. 767-768.
“Spectrum-Sliced Bidirectional WDM PON,” OFCC, Mar. 2000, pp. 160-162.
Jung Dae-Kwang
Kang Byung-Chang
Oh Yun-Je
Park Tae-Sung
Cha & Reiter LLC
Pascal Leslie
Samsung Electronics Co,. Ltd.
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