Frequency extractor

Details Frequency extractor Frequency extractor

2006-06-06

2006-06-06

Bello, Agustin (Department: 2633)

Optical communications

Multiplex

Optical switching

C398S079000

Reexamination Certificate

active

07058302

ABSTRACT:
A selective frequency extractor is disclosed which forwards one or more selected frequencies of a wavelength division multiplex input signal consisting of N channels to one output port and all the other frequencies to another output port. A reconfigurable frequency add and drop multiplexer is also disclosed. The input signal is divided up by a first demultiplexer and routed to a plurality of interleaved stages of optical switches for selectively feeding a plurality of input ports of a multiplexer, whose routing properties are then used for extracting one or more frequencies from the input signal or for reconfigurable frequency add and drop multiplexing.

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patent: 5566014 (1996-10-01), Glance
patent: 5745612 (1998-04-01), Wang et al.
patent: 0 655 874 (1995-05-01), None
patent: 0 720 408 (1996-07-01), None

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