Tunable optical filter tuning device suitable for use in the rec

Details Tunable optical filter tuning device suitable for use in the rec Tunable optical filter tuning device suitable for use in the rec

1994-07-27

1996-02-13

Couso, Jose L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359189, 359182, H04B 1006, H04B 1004

Patent

active

054915775

ABSTRACT:
A tunable optical filter tuning device suitable for use in the receive part of an optical transmission system rejects some of the optical noise superimposed on a wanted optical signal. The device commands displacement of the characteristic of the optical filter along the wavelength axis and includes a tuning detector to detect the time at which this displacement can be stopped. The tuning detector includes an optical power detector receiving a signal from the optical filter and detects any modulation of a signal from the optical power detector. The displacement is stopped when the detector detects modulation of the signal from the optical power detector.

REFERENCES:
patent: 4164650 (1979-08-01), Blackburn et al.
patent: 5283845 (1994-02-01), Ip
patent: 5319736 (1994-06-01), Hunt
patent: 5361155 (1994-11-01), Chiaroni et al.
"Method of Setting Tunable Optical Filters in a Wavelength Division Multiaccess System", IBM Technical Disclosure Bulletin, vol. 31, No. 11, Apr. 1989, pp. 271-274.
French Search Report FR 9309425.

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