Method of seamless migration from scaleable OADM to a...

Details Method of seamless migration from scaleable OADM to a... Method of seamless migration from scaleable OADM to a...

2007-08-07

2007-08-07

Leung, Christina (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S050000

Reexamination Certificate

active

10348818

ABSTRACT:
A method is provided for seamless migration from a scaleable optical add/drop multiplexer to a network switching node in an optical transport network. The method includes: providing a pre-deployed optical add/drop multiplexer (OADM) at a network node in the optical transport network; introducing an additional optical add/drop multiplexer (OADM) at the network node; and interconnecting the pre-deployed OADM to the additional OADM using a photonic cross-connect switch, where the photonic cross-connect switch is operable to route optical signals amongst the optical transport lines connected to the pre-deployed OADM and the upgraded OADM.

REFERENCES:
patent: 5557439 (1996-09-01), Alexander et al.
patent: 6272154 (2001-08-01), Bala et al.
patent: 6538784 (2003-03-01), Lee et al.
patent: 2003/0128985 (2003-07-01), Elbers et al.
patent: 0 905 936 (1999-03-01), None
patent: 1 081 880 (2001-03-01), None
patent: WO 211489 (2002-02-01), None
PCT International Search Report PCT/IB 03/00154, May 23, 2003.

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