Flexible open ring optical network and method

Details Flexible open ring optical network and method Flexible open ring optical network and method

2011-06-07

2011-06-07

Singh, Dalzid (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S016000, C398S059000, C398S083000

Reexamination Certificate

active

07957644

ABSTRACT:
A flexible open ring optical network includes a plurality of nodes connected by twin or other suitable optical rings. Each node is operable to passively add and passively drop traffic from the rings. The nodes may include a transport element for each ring. The transport elements include an optical splitter element and an optical combiner element. The optical splitter element is operable to passively combine an add signal including local add traffic and a first transport signal including ingress traffic from a coupled optical ring to generate a second transport signal including egress traffic for transmission on the coupled optical ring. The optical combiner element is coupled to the optical splitter element and is operable to passively split a third transport signal including the ingress traffic to generate a drop signal including local drop traffic and a fourth transport signal including the ingress traffic. Protection switching may be provided by selectively openable switches disposed in and distributed around the rings.

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