Method of locating faults in optical telecommunication networks

Details Method of locating faults in optical telecommunication networks Method of locating faults in optical telecommunication networks

2007-03-06

2007-03-06

Singh, Dalzid (Department: 2613)

Optical communications

Diagnostic testing

Fault location

C398S017000, C398S031000, C398S032000, C398S033000

Reexamination Certificate

active

10392975

ABSTRACT:
A method, a system and a module are proposed for detecting and locating faults in an optical multi channel network composed of network nodes. The method includes assigning different sub-carrier pilot tones to a number of the nodes comprising Network Elements (NE), applying the different sub-carrier pilot tones to any signal added to the network via the respective nodes, checking presence of one or more of the sub-carrier pilot tones at one or more points of the network, and, based on results of the checking, locating a faulty section of the network in case a fault occurred.

REFERENCES:
patent: 5436750 (1995-07-01), Kawano
patent: 5654816 (1997-08-01), Fishman et al.
patent: 5892606 (1999-04-01), Fatehi et al.
patent: 6101012 (2000-08-01), Danagher et al.
patent: 6115154 (2000-09-01), Antoniades et al.
patent: 6141125 (2000-10-01), Blair et al.
patent: 6285475 (2001-09-01), Fee
patent: 6317231 (2001-11-01), Al-Salameh et al.
patent: 2004/0109685 (2004-06-01), Wan et al.
patent: 0 782 279 (1997-07-01), None
patent: 0 794 628 (1997-09-01), None
patent: 62 116029 (1987-05-01), None
G.R. Hill et al.: “A Transport Network Layer Based on Optical Network Elements” Journal of Lightwave Technology, IEEE Service Center, New York, NY, US, vol. 11, No. 5/6, May 1, 1993, pp. 667-676, XP000396700. ISSN: 0733-8724 Chapter B. Pilot Tone Supervisory System, p. 674-675.
F. Heismann et al.: “Signal Tracking and Performance Monitoring in Multi-wavelength Optical Networks” 22ndEuropean Conference on Optical Communication, vol. 3, Sep. 15, 1996, pp. 47-50, XP010303119 *abstract* ch. Signal Identification on pp. 3.47 and 3.49 only* *p. 3.49 lines 7-12* .

Affiliated with

Also associated with

Rating

Method of locating faults in optical telecommunication networks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of locating faults in optical telecommunication networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of locating faults in optical telecommunication networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3736452