Dual homing for DWDM networks in fiber rings

Details Dual homing for DWDM networks in fiber rings Dual homing for DWDM networks in fiber rings

2007-11-27

2007-11-27

Bello, Agustin (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S059000, C398S005000

Reexamination Certificate

active

11258325

ABSTRACT:
First and second optical fibers carry information modulated on an optical carrier. Information modulated on the carrier is to be recovered and transmitted at a first node along the first and second optical fibers. The first node includes apparatus for receiving and transmitting the information. The apparatus for receiving and transmitting the information includes a first receiver for demodulating the information modulated on the optical carrier and carried on the first optical fiber, a second receiver for demodulating the information modulated on the optical carrier and carried on the second optical fiber, a transmitter for modulating the information on the second optical fiber, and a splitter for splitting the optical carrier carried on the first optical fiber. The splitter is coupled to the first optical fiber and the first receiver. A portion of the optical carrier is coupled to the first receiver and another portion of the optical carrier continues on the first optical fiber.

REFERENCES:
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patent: 4837856 (1989-06-01), Glista, Jr.
patent: 5406401 (1995-04-01), Kremer
patent: 5647035 (1997-07-01), Cadeddu et al.
patent: 5903370 (1999-05-01), Johnson
patent: 6034798 (2000-03-01), Oberg

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