Wavelength-swept laser and method for its operation

H - Electricity – 01 – S

Patent

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Details

H01S 3/10 (2006.01) H01S 3/098 (2006.01) H01S 3/067 (2006.01) H01S 3/083 (2006.01) H01S 3/106 (2006.01)

Patent

CA 2294897

The present invention relates to a wavelength-swept laser and a method for generating laser output. The wavelength-swept pulse laser according to one aspect of the present invention uses spontaneous mode- locking to produce a pulse output with the center wavelength continuously varying with time. On the contrary, the wavelength-swept laser according to another aspect of the present invention suppresses mode-locking to produce continuous output by tuning the filter frequency change speed to the frequency shift speed of the frequency shifter. The lasers of the present invention are applicable to optical sensing or WDM optical communication.

L'invention porte sur un laser à longueur d'onde variable et sur un procédé de production d'émissions laser. Dans l'une de ses exécutions, ledit laser pulsé utilise un verrouillage de mode spontané pour produire une émission pulsée alors que la longueur d'ondes centrale varie continuellement. Au contraire, dans une autre exécution, il supprime le verrouillage de mode pour produire une émission continue en accordant la vitesse de variation de fréquence sur celle des déplacements de fréquence du décaleur de fréquence. Lesdits lasers peuvent servir à la détection optique ou à des communications optiques du type MRL.

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