Optical communications – Optical transceiver – Including compensation
Reexamination Certificate
2011-03-29
2011-03-29
Curs, Nathan M (Department: 2613)
Optical communications
Optical transceiver
Including compensation
C398S137000, C398S197000
Reexamination Certificate
active
07917035
ABSTRACT:
A transceiver unit for use at an end-location in a communications network includes a downstream monitor configured to monitor downstream optical signals that travel from a service provider to the end-location. The downstream optical signals carry downstream data for use by a device in communication with the transceiver unit. At least a portion of the optical path traveled by the downstream optical signals is on a common optical fiber that carries downstream optical signals for other end locations. The transceiver unit also includes an upstream attenuator configured to attenuate upstream optical signals traveling from the end-location to the service provider. At least a portion of the optical path traveled by the upstream optical signals is on the common optical fiber. The transceiver unit also includes electronics configured to operate the upstream optical attenuator in response to output from the downstream monitor.
REFERENCES:
patent: 2003/0011855 (2003-01-01), Fujiwara
patent: 2004/0253003 (2004-12-01), Farmer et al.
patent: 2007/0065089 (2007-03-01), Matsuoka et al.
patent: 2007/0076505 (2007-04-01), Radtke et al.
patent: 2007/0154213 (2007-07-01), Hinderthur
patent: 2007/0172239 (2007-07-01), Yamazaki et al.
patent: 2008/0292312 (2008-11-01), Oron et al.
Asghari Mehdi
Luff Bradley Jonathan
Curs Nathan M
Gavrilovich Dodd & Lindsey LLP
Kotura, Inc.
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