Optical signal quality selection system

Details Optical signal quality selection system Optical signal quality selection system

2005-02-15

2005-02-15

Sedighian, M. R. (Department: 2633)

Optical communications

Diagnostic testing

C398S025000, C398S033000

Reexamination Certificate

active

06856767

ABSTRACT:
The present invention provides an optical signal quality selection system for optimizing the quality of information transmission. The system splits an incoming optical signal into two equal signals. The split signals are evaluated in optical performance monitors, transmitting an electrical output message to a signal selector relating to the quality of the respective signal. A second electrical message is sent from the optical performance generator to an alarm indicator signal generator, which sends an optical signal to the signal selector to drop the one of the split signals and transmit the non-dropped split signal. An unequipped optical signal from an optical idle signal generator is triggered if no active optical signal is being transmitted.

REFERENCES:
patent: 5920414 (1999-07-01), Miyachi et al.
patent: 5933258 (1999-08-01), Flanagan et al.
patent: 5943146 (1999-08-01), Harano
patent: 6516110 (2003-02-01), Hayashi et al.
patent: 6587236 (2003-07-01), Butler et al.

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