Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate
2007-10-16
2007-10-16
Phan, Hanh (Department: 2613)
Optical communications
Fault recovery
Bypass inoperative element
C398S059000, C398S079000, C398S082000, C398S083000, C398S004000, C398S005000, C398S007000, C398S010000, C398S013000, C398S014000, C398S017000, C398S020000, C398S022000, C398S023000, C398S024000, C398S030000, C398S033000, C398S045000, C398S050000, C398S056000, C370S216000, C370S217000, C370S221000, C370S222000, C370S223000, C370S224000, C370S225000, C370S227000, C370S228000
Reexamination Certificate
active
10158348
ABSTRACT:
An optical network includes an optical ring and at least three subnets. Each subnet includes a plurality of add/drop nodes coupled to the optical ring. The add/drop nodes are operable to passively add a first traffic stream in a first direction on the optical ring and a second traffic stream in a second direction on the optical ring. The first traffic stream comprises different content than the second traffic stream, and the first traffic stream and the second traffic stream are transmitted on the same wavelength. The network also includes a plurality of gateway nodes. The gateway nodes are each coupled to the optical ring at a boundary between neighboring subnets and are operable to selectively pass and terminate wavelengths between subnets to allow wavelength reuse in the subnets.
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Gumaste Ashwin Anil
Kinoshita Susumu
Takeguchi Koji
Fujitsu Limited
Phan Hanh
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