Optoelectronic switch having cascaded optical nodes

Details Optoelectronic switch having cascaded optical nodes Optoelectronic switch having cascaded optical nodes

2006-01-19

2008-12-16

Li, Shi K (Department: 2613)

Optical communications

Multiplex

Optical switching

Reexamination Certificate

active

07466914

ABSTRACT:
An optical switch assembly is provided having a plurality of optoelectronic switching nodes. Each node is a three terminal optical device having a first optical input, a second optical input and an optical output. Each node can be electrically activated or deactivated via an electrical control input. Each node has a transmittance between its second optical input and its optical output. This transmittance depends on the signal at the first optical input if the node is activated, and is independent of the first optical input if the node is deactivated. Thus modulation at the first optical input can be selectively imposed on the optical output. The switch includes at least two chains of nodes, each chain having two or more nodes connected in series such that each pair of adjacent nodes is connected from optical output to second optical input. Switches according to the invention can be configured as optical crossbar switches or optical routers.

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