Optical transmission path monitoring system, monitoring...

Details Optical transmission path monitoring system, monitoring... Optical transmission path monitoring system, monitoring...

2001-08-22

2009-02-24

Bello, Agustin (Department: 2613)

Optical communications

Transmitter and receiver system

Including optical waveguide

C398S160000, C398S177000, C398S181000

Reexamination Certificate

active

07496296

ABSTRACT:
Terminal equipment of a wavelength division multiplexing optical transmission system is provided with a monitoring apparatus for monitoring optical transmission paths with an OTDR. For this monitoring, OTDR probe lights of different wavelengths are allocated to optical fibers and optical amplifier-repeaters, which are elements constituting the optical transmission paths. Further, different wavelengths are allocated to OTDR probe lights between the up link and the downlink. Such a wavelength as makes the wavelength dispersion over the optical transmission paths negative (usually the shorter wavelength side than the zero dispersion wavelength of the optical transmission paths) is allocated to the OTDR probe light for optical fiber monitoring, and a wavelength longer than 1550 nm is allocated to the OTDR probe light for optical amplifier-repeater monitoring.

REFERENCES:
patent: 5790294 (1998-08-01), Horiuchi et al.
patent: 5923453 (1999-07-01), Yoneyama
patent: 5926263 (1999-07-01), Lynch et al.
patent: 6301404 (2001-10-01), Yoneyama
patent: 6708004 (2004-03-01), Homsey
patent: 0 784 391 (1997-07-01), None
patent: 0 935 356 (1999-08-01), None
patent: 2 314 224 (1997-12-01), None
patent: 8-181656 (1996-07-01), None
patent: 11-266205 (1999-09-01), None
patent: 2000-31907 (2000-01-01), None
patent: 2000-59306 (2000-02-01), None
“Characteristics of optically amplified optical fibre submarine cable systems” ITU-T, G.977, Apr. 2000, pp. 1-36.
European Search Report dated Mar. 28, 2003.

Affiliated with

Also associated with

Rating

Optical transmission path monitoring system, monitoring... 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 transmission path monitoring system, monitoring..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical transmission path monitoring system, monitoring... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4071355