Path to provide OTDR measurements of an optical transmission sys

Details Path to provide OTDR measurements of an optical transmission sys Path to provide OTDR measurements of an optical transmission sys

1996-10-23

2000-02-22

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359152, 359173, 356 731, H04B 1008

Patent

active

060286849

ABSTRACT:
A path couples a pair of optical fibers in an optical transmission system. The transmission system includes a plurality of optical amplifiers placed along the transmission line. Associated with these optical amplifiers are optical isolators that limit the flow of optical energy to a single direction. The path allows reflected or scattered light from one optical fiber after the optical isolator to be returned via the other optical fiber. This enables an OTDR device to obtain measurement information along the entire length of the fibers between optical isolators.

REFERENCES:
patent: 4794249 (1988-12-01), Beckmann et al.
patent: 5214728 (1993-05-01), Shigematsu
patent: 5321541 (1994-06-01), Cohen
patent: 5343286 (1994-08-01), Keeble et al.

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