Passive add/drop amplifier for optical networks and method

Details Passive add/drop amplifier for optical networks and method Passive add/drop amplifier for optical networks and method

2006-08-01

2006-08-01

Phan, Hanh (Department: 2638)

Optical communications

Multiplex

Wavelength division or frequency division

C398S079000, C398S082000, C398S084000, C398S085000, C398S092000, C398S093000, C398S094000, C398S059000, C385S024000, C385S037000, C359S337000, C359S341430

Reexamination Certificate

active

07085496

ABSTRACT:
An add/drop node for an optical network comprises a passive splitter to split an ingress signal from the network into a first ingress signal and a second ingress signal. A first amplified splitter stages module is operable to passively split and amplify the first ingress signal into a plurality of drop signals. A filter module is operable to filter the second ingress signal to provide a filtered pass-through signal. A second amplified splitter stages module is operable to passively combine a plurality of add signals into a combined add signal and to combine the combined add signal with the filtered pass-through signal to create an egress signal forwardable to the network.

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