Device for monitoring the quality of an optical signal by...

Details Device for monitoring the quality of an optical signal by... Device for monitoring the quality of an optical signal by...

2011-01-25

2011-01-25

Vanderpuye, Kenneth N (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S025000, C398S028000, C398S038000, C398S207000

Reexamination Certificate

active

07877010

ABSTRACT:
An optical signal quality monitor device includes a local oscillator that generates a local oscillation signal, with which a mixer mixes an input optical signal to output a mixed signal, of which at least one beat component a filter that extracts. An intensity detector detects intensity of the extracted beat component. The monitor device may thus accurately and rapidly monitor the quality of an input optical signal transmitted even at a higher bit rate.

REFERENCES:
patent: 4759080 (1988-07-01), Emura et al.
patent: 6335814 (2002-01-01), Fuse et al.
patent: 2004/0156632 (2004-08-01), Lee et al.
patent: 2005-151597 (2005-06-01), None

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