Test system for optical line which carries out fault search...

Details Test system for optical line which carries out fault search... Test system for optical line which carries out fault search...

2007-01-23

2007-01-23

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

10524067

ABSTRACT:
A fault searching system searches for a fault in an optical line connected with an optical fiber carrying out data transmission between a transmission apparatus and a user optical terminal. A connecting unit detaches a terminal portion of the optical line at the user optical terminal, and connects an OTDR to the terminal portion of the optical line. At least one of a test light with a wavelength different from a wavelength of light used for data transmission in the optical line, and a test light whose peak level is less than or equal to a predetermined level, is caused to be incident upon the terminal portion of the optical line. A searching unit searches for a fault in the optical line from the user optical terminal side by detecting backward scattering light or return light from the optical line produced by the test light caused by the OTDR.

REFERENCES:
patent: 5177354 (1993-01-01), Tomita et al.
patent: 5270537 (1993-12-01), Jacobs
patent: 5285305 (1994-02-01), Cohen et al.
patent: 5343286 (1994-08-01), Keeble et al.
patent: 5790287 (1998-08-01), Darcie et al.
patent: 2002/0075534 (2002-06-01), Feldman
patent: 2-94717 (1990-04-01), None
patent: 6-249750 (1994-09-01), None
N. Araki et al; “Tests for Improving Reliability in Trunk Line”; on line, Jun. 1999, searched on Jun. 30, 2003; Internet. 10 pages.

Affiliated with

Also associated with

Rating

Test system for optical line which carries out fault search... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Test system for optical line which carries out fault search..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test system for optical line which carries out fault search... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3773549