Wavelength-variable light source and otdr apparatus

Details Wavelength-variable light source and otdr apparatus Wavelength-variable light source and otdr apparatus

G - Physics

01

M

G01M 11/00 (2006.01)

Patent

CA 2227937

The wavelength-variable light source comprises a semiconductor light-emitting device 11; a first light waveguide 31 optically coupled to the semiconductor light-emitting device; a plurality of second light waveguides 32, disposed in parallel to each other, in which light-waveguide-type diffraction gratings 21 having wavelengths different from each other are respectively disposed; a first optical switch 12 formed such that the first light waveguide can oppose the second light waveguides; and a condenser 13 which collects output optical powers from a plurality of second light waveguides into one beam. The semiconductor light-emitting device 11, first light waveguide 31, second light waveguides 32, and light-waveguide-type diffraction gratings 21 form a resonator 40, which oscillates light having a wavelength reflected by the light-waveguide-type diffraction gratings 21.

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