Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2004-10-18
2008-12-30
Leung, Christina Y (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S063000
Reexamination Certificate
active
07471899
ABSTRACT:
Provided is a WDM-PON system based on a wavelength-tunable ECL. A method of controlling an upstream optical wavelength of an ONT in WDM-PON system, the method comprises: determining upstream optical wavelength information of the ONT corresponding to a downstream optical wavelength predetermined to the ONT newly installed by being connected to a network; in an OLT, loading the determined upstream optical wavelength information onto the downstream optical wavelength assigned to the ONT and transmitting the loaded upstream optical wavelength information to the ONT; in the ONT, generating an upstream optical wavelength based on the upstream optical wavelength information transmitted by being loaded on the downstream optical wavelength from the OLT; and in the ONT, loading upstream data onto the generated upstream optical wavelength and transmitting the loaded upstream data to the OLT.
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Kim Byoung Whi
Lee Hyeong Ho
Yang Jae Woo
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Leung Christina Y
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