Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate
2008-03-21
2011-10-11
Vanderpuye, Ken (Department: 2613)
Optical communications
Fault recovery
Bypass inoperative element
Reexamination Certificate
active
08036527
ABSTRACT:
An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter receiving an electrical signal and splitting the received electrical signal into a plurality of electrical signals which are substantially identical to the received electrical signal; an output switching unit selecting output paths of the electrical signals split by the splitter according to an optical channel path control command of the optical network; and a plurality of optical transponders being assigned to the respective output paths of the electrical signals, converting the electrical signal input by the selection of the output switching unit to an optical signal, and transmitting the converted optical signal to another node of the optical network.
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Korean Office Action for Application No. 10-2007-0087741, dated Dec. 9, 2008.
Chang Sun-hyok
Chung Hwan-seok
Kim Kwang-joon
Lee Sang-soo
Electronics and Telecommunications Research Institute
Lee, Esq. EuiHoon
Nelson Mullins Riley & Scarborough LLP
Vanderpuye Ken
Wilson Jermaine
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