Optical add/drop multiplexer with reconfigurable add...

Details Optical add/drop multiplexer with reconfigurable add... Optical add/drop multiplexer with reconfigurable add...

2004-10-06

2009-12-15

Vanderpuye, Ken N (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S007000, C398S079000

Reexamination Certificate

active

07634196

ABSTRACT:
A reconfigurable WDM add/drop multiplexer and its method of operation at an add/drop node on an optical fiber carrying a plurality of WDM signals is described. The WDM add/drop multiplexer has a coupler and a demultiplexer element dropping WDM signals from the optical fiber to a plurality of drop terminals, and a wavelength-selective switch adding WDM signals from a plurality of add terminals onto the optical fiber. The coupler splits the WDM signals received from the optical fiber and passes the split WDM signals to the first and second output terminals. The demultiplexer element separates the split WDM signals at the plurality of drop terminals. The wavelength-selective switch, which has an input terminal for connection to the second coupler output terminal and an output terminal for connection to the optical fiber, selectively adds WDM signals on the plurality of add terminals to the optical fiber responsive to control signals.

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