Patent ID: 6507597
Filing Date: 2003-01-14
Classification: H01S

Abstract:
A multiwavelength laser source transmitting a luminous flux comprising:as many amplifier wave-guides as potential transmission wavelengths; a collimation optic system for collimating the beams transmitted by the wave-guides; a diffraction grating and a retro-reflector; a dispersive retro-reflecting device composed of the grating and the retro-reflector that defines with each wave-guide an external resonating cavity, wherein each wave-guide has an inner face and on outer face with respect to its associated cavity, and wherein a Fabry-Perot interferometer with reduced fine adjustment is placed in the cavity between the collimation optic system and the grating, whereby said interferometer is tilted with respect to the axis of the cavity and forms a selective filter, whose variation law of the wavelength transmitted in relation to the angle of incidence is identical with that of the dispersive retro-reflecting device.