Optical communications – Multiplex – Hybrid
Reexamination Certificate
2008-06-25
2011-11-08
Vanderpuye, Kenneth N (Department: 2613)
Optical communications
Multiplex
Hybrid
C398S067000, C398S068000
Reexamination Certificate
active
08055133
ABSTRACT:
A time division multiplex (TDM)/wavelength division multiple access (WDMA) passive optical network (PON) device includes a base station terminal, a wavelength splitter, and a subscriber terminal optical transceiver. The base station terminal includes a transmitter, an optical circulator transmitting the optical signals output from the transmitter to an optical distribution network, and a receiver demultiplexing wavelength division multiplexed upstream signals from the optical distribution network through the optical circulator. The wavelength splitter splits the downstream signals from the base station terminal to subscriber ports corresponding to wavelengths and multiplexes the optical signals received from each of the subscriber ports to the base station terminal. The subscriber terminal optical transceiver receives the downstream signals from the wavelength splitter and reuses the received downstream signals as optical sources for upstream signals.
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Kim Bong Tae
Lee Dong Soo
Yoon Bin Yeong
Electronics and Telecommunications Research Institute
Lee, Esq. EuiHoon
Nelson Mullins Riley & Scarborough LLP
Sandhu Amritbir
Vanderpuye Kenneth N
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