Cancellation of optical signal reflections in bi-directional...

Details Cancellation of optical signal reflections in bi-directional... Cancellation of optical signal reflections in bi-directional...

2006-02-14

2006-02-14

Pascal, Leslie (Department: 2633)

Optical communications

Diagnostic testing

Fault detection

C398S028000, C398S136000, C398S139000

Reexamination Certificate

active

06999679

ABSTRACT:
Signal reflection mitigation in fiber-optic networks. Signal reflections are mitigated using near-end echo cancellation, threshold adjustment and/or error correction code. Signal reflections in a receive signal that are caused by near-end connectors may be mitigated using an echo cancellation signal. Signal reflections caused by other discontinuities on a fiber-optic network may be mitigated by using error correction code. Also, an average value of a reflected signal maybe detected and used to set an adjusted threshold value to interpret logical values of an electronic or optical signal.

REFERENCES:
patent: 4301543 (1981-11-01), Palmer
patent: 6441937 (2002-08-01), Baur et al.

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