Optical frequency acquisition apparatus for optical coherent com

Details Optical frequency acquisition apparatus for optical coherent com Optical frequency acquisition apparatus for optical coherent com

1994-04-04

1995-03-21

Goldstein, Herbert

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359191, H04B 900, H04B 1006, H04J 1400

Patent

active

054001676

ABSTRACT:
An automatic frequency control system, for an optical coherent communication system, in which the frequency of local oscillation light 5 from a coherent light communication receiver 100 is swept to pull the intermediate frequency to a stable AFC point. The AFC is caused to operate with an intermediate frequency in the AFC operation range, and interrupted. Subsequently while sweeping the frequency of local oscillation light 5 in a certain direction in a predetermined range, the output voltage of frequency discriminator 9 is monitored. Once the change of the output voltage of frequency discriminator 9 due to the sweep exceeds the predetermined threshold value, the AFC resumes for pulling to a stable point.

REFERENCES:
patent: 4903342 (1990-02-01), Yamazaki
patent: 4912527 (1990-03-01), Yamazaki
patent: 5046140 (1991-09-01), Yamazaki

Affiliated with

Also associated with

Rating

Optical frequency acquisition apparatus for optical coherent com does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical frequency acquisition apparatus for optical coherent com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical frequency acquisition apparatus for optical coherent com will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1153645