Multi-wavelength light source utilizing acousto-optic tunable filter
AssigneeFujitsu Limited
InventorsNaoki Hashimoto, Tadao Nakazawa
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Abstract
The present invention aims at providing a multi-wavelength light source for stably generating a plurality of oscillated lights of arbitrary wavelengths by a simplified constitution. To this end, the multi-wavelength light source of the present invention is provided with an acousto-optic tunable filter (AOTF) on an optical path of a resonator including an optical amplifier, so that the AOTF selects lights of plural wavelengths from input lights corresponding to multiple surface acoustic waves at different frequencies, respectively, and shifts the frequencies of the selected lights to output the frequency shifted lights to the optical path, thereby realizing the stable multi-wavelength oscillation of lights being propagated within the resonator.
Claims16
A multi-wavelength light source having an optical amplifier on an optical path of a resonator, and generating a plurality of lights having different wavelengths, the lights being propagated through the resonator and oscillated, the light source comprising:
- an acousto-optic tunable filter on the optical path of the resonator, wherein
- the acousto-optic tunable filter selects lights, from lights input thereto, having wavelengths corresponding to frequencies of a plurality of surface acoustic waves having different frequencies, and shifts the frequencies of the selected lights by Doppler shift when converting a mode of the selected lights to output the frequency shifted-lights to the optical path.
Dependencies are inferred from the claim text.