Duplex reflective re-configurable optical add/drop multiplexer

Details Duplex reflective re-configurable optical add/drop multiplexer Duplex reflective re-configurable optical add/drop multiplexer

H - Electricity

04

J

H04J 14/02 (2006.01)

Patent

CA 2428939

Devices and methods are provided for a re- configurable optical add/drop multiplexer (ROADM) having a static circulator, a selectable grating and a reversible circulator. The use of a reversible circulator in a known optical drop multiplexer configuration allows the selectable grating to be used for selecting both the add-wavelength and the drop-wavelength while maintaining an East/West architectural split to allow for SONET compliant maintenance. This invention provides a cost-effective enhancement to a duplex reflective wavelength selective ROADM.

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