Optical add/drop node and method

Optical waveguides – With optical coupler – Plural

Reexamination Certificate

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C385S031000, C398S068000, C398S072000

Reexamination Certificate

active

06842562

ABSTRACT:
An add/drop node (OADN) comprises a network optical fiber carrying a signal on an optical network. A network drop splitter is coupled to the network optical fiber and to stages of drop splitters, the stages of drop splitters being operable to passively split an optical signal from the network drop splitter into multiple copies of the signal. The OADN further comprises at least one filter operable to receive at least a copy of the signal from at least one drop splitter to create a filtered copy, and further comprises at least one broadband receiver operable to receive the filtered copy from the filter.

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