Optical transmission system fault analysis

Details Optical transmission system fault analysis Optical transmission system fault analysis

1997-07-22

1999-10-05

Font, Frank G.

Optics: measuring and testing

For optical fiber or waveguide inspection

25022717, 25022719, 356 731, G01N 2100

Patent

active

059633123

ABSTRACT:
A system for locating sources of degradation of an optical path of an optical transmission system comprises means for transmitting (1) along the path a test pattern signal having a frequency spectrum predominately in a band below a data traffic rate means (4) for recovering the test pattern at a plurality of separate points in the path means (4) for determining an amount of pattern degradation from the shape of the recovered pattern, and means (5) for comparing the amounts of pattern degradation at the separate points to locate the source. A broad range of types of degradation can be detected efficiently, and the results used to take corrective action.

REFERENCES:
patent: 4300239 (1981-11-01), Wakabayashi et al.
patent: 4965856 (1990-10-01), Swanic
patent: 5381257 (1995-01-01), Ferrar
patent: 5513029 (1996-04-01), Roberts

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