Optical wavelength multiplexing and demultiplexing device and an

Details Optical wavelength multiplexing and demultiplexing device and an Optical wavelength multiplexing and demultiplexing device and an

1997-06-16

2000-05-09

Hofsass, Jeffery A.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359127, 359128, 359130, 359119, 385 15, 385 16, H04J 1402

Patent

active

06061157&

ABSTRACT:
An optical wavelength multiplexing and demultiplexing device may transmit an optical signal equivalent to a lost optical signal on a normal section in WDM network. The optical wavelength multiplexing and demultiplexing device includes an optical add-drop multiplexing circuit having a plurality of pairs of input and output ports and a plurality of path switches, each connected to a corresponding pair of the plurality of pairs of input and output ports for breaking off an optical signal inputted to an input port of the corresponding pair, and switching a path of an optical signal output from an output port of the corresponding pair to the input port of the corresponding pair.

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