Compact and reconfigurable optical device for controlled...

Optical waveguides – With optical coupler – Switch

Reexamination Certificate

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C385S024000

Reexamination Certificate

active

10999965

ABSTRACT:
An optical multiplexer device is dedicated to inserting/dropping optical resources for an optical transmission line comprising an upstream fiber and a downstream fiber. The device comprises: first and second OMADs each having a first primary inlet/out1et connected to the upstream or downstream fiber, and to L internal demultiplexing channels connected to L first secondary inlets/outlets, and a second primary inlet/outlet connected to M internal multiplexing connected to M second secondary inlets/outlets, connected to M send or receive modules L external coupling channels interconnecting the L first secondary inlets/outlets, and each fitted with a respective VOA capable of placing itself in a through or blocking state for allowing or preventing an optical resource to be transferred between OMADs; and an external drop or insert channel connected to the upstream or downstream fiber, respectively, and to the first primary or second primary inlet/outlet of the second or first OMAD, respectively.

REFERENCES:
patent: 6204946 (2001-03-01), Aksyuk et al.
patent: 6690846 (2004-02-01), Zhou et al.
patent: 2002/0196494 (2002-12-01), McGuire
patent: 0 930 799 (1999-07-01), None
patent: 2 381 683 (2003-05-01), None
patent: WO 01/08333 (2001-02-01), None
patent: WO 03/098856 (2003-11-01), None
B. B. Dingel et al, “Photonic Add-Drop Multiplexing Perspective for Next Generation Optical Networks”, Proceedings of the Spie, Bellingham, VA, vol. 4532, 2001, pp. 394-408, XP007872.
M. P. Earnshaw et al, “Integrated Reconfigurable Optical Wavelength add-drop Multiplexer”, Electronics Letters, IEE Stevenage, GB, vol. 38, No. 22, Oct. 24, 2002, pp. 1351-1352, XP006019113.
U.S. Appl. No. 10/999,996, filed Dec. 1, 2004 entitled, “A Reconfigurable Optical Device For Controlled Insertion/Dropping of Optical Resources.”

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