Dynamically reconfigurable add/drop multiplexer with low...

Details Dynamically reconfigurable add/drop multiplexer with low... Dynamically reconfigurable add/drop multiplexer with low...

2005-10-25

2005-10-25

Chan, Jason (Department: 2633)

Optical communications

Multiplex

Wavelength division or frequency division

C398S085000, C398S087000, C398S043000, C398S024000

Reexamination Certificate

active

06959153

ABSTRACT:
An add-drop multiplexer is described, in one embodiment the add-drop multiplexer includes an optical transmission signal input port adapted to receive a wavelength division multiplexed optical transmission signal, an optical transmission signal output port adapted to output at least a portion of the wavelength division multiplexed optical transmission signal, an add-drop optical channel port adapted to receive an optical add channel and output an optical drop channel, and a wavelength selective optical filter arranged between the optical transmission signal input port, the optical transmission signal output port and the optical add-drop channel port. The wavelength selective optical filter reflects optical channels that will continue through the add-drop multiplexer along a transmission line to the optical transmission signal output port and permits an optical channel that is to be dropped to pass therethrough.

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