Optical receiver decision threshold tuning apparatus and method

Details Optical receiver decision threshold tuning apparatus and method Optical receiver decision threshold tuning apparatus and method

2007-09-11

2007-09-11

Chan, Jason (Department: 2613)

Optical communications

Diagnostic testing

Fault detection

C398S027000

Reexamination Certificate

active

10445800

ABSTRACT:
A method of controlling an optical signal receiver utilizes three control loops: a first control loop tunes the decision threshold of the receiver when the optical network is in a substantially steady state and a second control loop rapidly switches to a reference decision threshold upon the occurrence of an alarm condition. The invention rapidly switches to a predetermined reference decision threshold to compensate for optical signal changes in eye Q and received power after a protection switch or traffic reroute. After a protection switch, a slower tuning algorithm is used to adjust the decision threshold to a more optimum value. In the third control loop, the optical signal receiver may utilize a peak detector that detects the optical signal peak and a potentiometer that is commanded by a controller to output a commanded percentage of this peak value to adjust the threshold and thereby respond to transients.

REFERENCES:
patent: 5097486 (1992-03-01), Newby et al.
patent: 5703711 (1997-12-01), Hamada
patent: 5805641 (1998-09-01), Patel
patent: 5923462 (1999-07-01), van der Plaats
patent: 5963599 (1999-10-01), Curtis et al.
patent: 5986783 (1999-11-01), Sharma et al.
patent: 6038063 (2000-03-01), Tsuda et al.
patent: 6163399 (2000-12-01), Berg
patent: 6178213 (2001-01-01), McCormack et al.
patent: 6198571 (2001-03-01), Yang
patent: 6304347 (2001-10-01), Beine et al.
patent: 6331906 (2001-12-01), Sharma et al.
patent: 6341034 (2002-01-01), Sun et al.
patent: 6342959 (2002-01-01), Haxell et al.
patent: 6407854 (2002-06-01), Shum
patent: 6549513 (2003-04-01), Chao et al.
patent: 6567194 (2003-05-01), Badr
patent: 6907197 (2005-06-01), Heath et al.
patent: 6980737 (2005-12-01), Anslow et al.
patent: 7010180 (2006-03-01), van Wijngaarden et al.
patent: 7058315 (2006-06-01), Brewer et al.
patent: 2004/0208538 (2004-10-01), Liwak

Affiliated with

Also associated with

Rating

Optical receiver decision threshold tuning apparatus and method 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 receiver decision threshold tuning apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical receiver decision threshold tuning apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3761236