Method and apparatus for determining the distance to a reflectiv

Details Method and apparatus for determining the distance to a reflectiv Method and apparatus for determining the distance to a reflectiv

1994-08-30

1996-03-19

Limanek, Robert P.

Optics: measuring and testing

For optical fiber or waveguide inspection

25022715, G01N 2100

Patent

active

055007309

ABSTRACT:
There is presented an apparatus and method of locating a reflective anomaly in an optical fiber. An optical generator is positioned at one end of a light path extending to and from a reflective anomaly in an optical fiber, and periodic pulses of light are injected into the fiber. A bend coupler containing directional optical detectors is clamped to the optical fiber in mid-span, between the optical generator and a reflective anomaly, and light energy is tapped. The coupler is capable of detecting and discriminating light travelling in both longitudinal directions. After signal conditioning and digitization, the light pulses are submitted to a logical network to initiate a timer that measures a time interval between the event of an interrogating light pulse, and its reflection, the result being memorized in a buffer. A microprocessor controls the system, and computes distance between the attached bend coupler and the reflective anomaly as a function of the memorized time interval. The result is then displayed for the user. The system enables a fault to be rapidly and accurately located in a multidrop installation without violating intermediate fibers.

REFERENCES:
patent: 5042943 (1991-08-01), Mallinson et al.
patent: 5062703 (1991-11-01), Wong et al.
patent: 5066118 (1991-11-01), Buerli
patent: 5069544 (1991-12-01), Bureli
patent: 5078489 (1992-01-01), Lieber
patent: 5104391 (1992-04-01), Ingle et al.
patent: 5130535 (1992-07-01), Kummer et al.
patent: 5131743 (1992-07-01), Kaneko et al.
patent: 5149961 (1992-09-01), Arnold et al.
patent: 5353110 (1994-10-01), Jones

Affiliated with

Also associated with

Rating

Method and apparatus for determining the distance to a reflectiv 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 and apparatus for determining the distance to a reflectiv, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the distance to a reflectiv will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1962102