Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2007-07-10
2007-07-10
Singh, Dalzid (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S005000, C398S094000, C398S197000
Reexamination Certificate
active
10859451
ABSTRACT:
An optical transmission equipment in an optical communication system interconnecting two optical transmission equipment sets by a main transmission line and a backup transmission line. An optical amplifier amplifies and outputs optical signals from one transmission line in use, interconnecting the optical transmission equipment concerned with neighboring upstream optical transmission equipment, and outputs the optical signals including a signal component and a noise component. A controller controls an optical signal level so that a signal component in the optical signal reaches a predetermined level. The controller corrects the optical signal level when the transmission line transmitting the optical signal is switched either from the main transmission line to the backup transmission line or from the backup transmission line to the main transmission line, either between the optical transmission equipment concerned and a neighboring upstream optical transmission equipment, or between other two optical transmission equipment sets located on an upstream side.
REFERENCES:
patent: 5790289 (1998-08-01), Taga et al.
patent: 5883735 (1999-03-01), Sugiyama et al.
patent: 6160648 (2000-12-01), Oberg et al.
patent: 1 011 221 (2000-06-01), None
patent: 1 076 434 (2001-02-01), None
patent: 2-253730 (1990-10-01), None
patent: 8-321824 (1996-12-01), None
patent: 9-233023 (1997-09-01), None
patent: 11-088270 (1999-03-01), None
patent: 11-313349 (1999-11-01), None
patent: 2000-183818 (2000-06-01), None
patent: 2001-53686 (2001-02-01), None
Hasuo Koji
Izumi Futoshi
Fujitsu Limited
Singh Dalzid
LandOfFree
Optical communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3783331