Method and device for stabilizing operation point and...

Details Method and device for stabilizing operation point and... Method and device for stabilizing operation point and...

2005-08-02

2005-08-02

Epps, Georgia (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S237000

Reexamination Certificate

active

06924916

ABSTRACT:
A method and device for stabilizing operation point and optical output of an external optical modulator. A low-frequency signal below a lower limit of signal frequency band of an input signal inputted to optical modulator is superimposed onto direct current bias. A low-frequency component included in detector output is extracted. On the basis of the low-frequency signal, output of the low-frequency component is normalized, and output-light of light source is controlled in accordance with normalized low-frequency component. Means of controlling optical output of light source, in control of output-light of light source, detects the output-light, compares the value of detected output-light to a standard value of primary optical output, and adjusts the output-light. The standard value is modified according to a ratio of primary value of normalized low-frequency component to a subsequent value, and means controlling optical output of light source is operated on the basis of modified standard value.

REFERENCES:
patent: 5170274 (1992-12-01), Kuwata et al.
patent: 5359449 (1994-10-01), Nishimoto et al.
patent: 5917637 (1999-06-01), Ishikawa et al.
patent: 6317247 (2001-11-01), Yang et al.
patent: 6317249 (2001-11-01), Nakamoto et al.
patent: 6334004 (2001-12-01), Ohkuma et al.
patent: 6362913 (2002-03-01), Ooi et al.
patent: 6570698 (2003-05-01), Kim et al.
patent: 2002/0018283 (2002-02-01), Hayashi et al.
patent: 1 030 469 (2000-08-01), None

Affiliated with

Also associated with

Rating

Method and device for stabilizing operation point and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for stabilizing operation point and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for stabilizing operation point and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3511056