Wavelength reference device

Details Wavelength reference device Wavelength reference device

G - Physics

01

B

G01B 9/02 (2006.01) G01J 9/02 (2006.01) H01S 5/0687 (2006.01) H01S 5/022 (2006.01) H01S 5/183 (2006.01)

Patent

CA 2386150

A wavelength reference device (110) for tuning a tunable Fabry-Perot filter and/or a tunable VCSEL (105) to a desired frequency, where the device uses a Fizeau interferometer (125) and a position sensitive detector (130), with the position sensitive detector (130) being used to measure the location of the maximum reflected power from the interferometer (125), whereby to determine the wavelength of laser radiation for tuning the device (110).

L'invention concerne un dispositif de référence en longueur d'onde (110), pour caler sur une fréquence voulue un filtre Fabry-Pérot accordable et/ou un VCSEL (105) (laser à cavité verticale et à émission par la surface) accordable. Ledit dispositif utilise un interféromètre de Fizeau (125) et un détecteur de position (130) conçu pour mesurer la puissance réfléchie maximum de l'interféromètre (125), de sorte que la longueur d'onde du rayonnement laser soit déterminée pour l'accord du dispositif (110).

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