Apparatus for detecting wavelength drift and method therefor

Details Apparatus for detecting wavelength drift and method therefor Apparatus for detecting wavelength drift and method therefor

2005-07-19

2005-07-19

Lee, Andrew H. (Department: 2877)

Optics: measuring and testing

By light interference

Having light beams of different frequencies

C372S032000

Reexamination Certificate

active

06919963

ABSTRACT:
A laser wavelength locking control loop apparatus comprising a wavelength selective device and a photodetector, coupled to a feedback controller circuit. Electromagnetic radiation emitted by the laser device is provided to the wavelength selective device which provides a first output signal at a first wavelength and a second output signal at a second wavelength. The first and second output signals are directed to the photodetector so as to coincide when incident thereupon. A beat signal results from the coincidence of the first and second output signals and this is used to measure wavelength drift.

REFERENCES:
patent: 5002395 (1991-03-01), Shah
patent: 57037893 (1982-03-01), None
patent: 57190387 (1982-11-01), None
patent: 62171174 (1987-07-01), None
patent: 63317935 (1988-12-01), None
patent: 07115248 (1995-05-01), None
patent: WO 01/11739 (2001-02-01), None
Claessen, L., Examiner. European Search Report, Application No. EP 01 31 0792, dated Dec. 5, 2002.

Affiliated with

Also associated with

Rating

Apparatus for detecting wavelength drift and method therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for detecting wavelength drift and method therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting wavelength drift and method therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3432829