Santec Corporation

Kentaro Yasunaka

Noboru Uehara

Yuichi Takushima

PROBLEM TO BE SOLVED: to realize a wide bandwidth light source capable of a stable operation providing a less spectrum variation. SOLUTION: Optical pulsesoutputted by this optical pulse-generating deviceare split by optical coupler. The one of split optical pulses is inputted in white light-emitting deviceto emit the white light having the wide bandwidth. The other split is inputted in optical band pass filterin operation-stabilizing circuit. Optical detectordetects a signal level of a specific wavelength and input in feedback circuitto generate first and second feedback signalsand. Ring resonator fiber laseruses any one of them and controls a rotation angle of the waveplate to realize stabilization of the output.

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Kanagawa, Japan

Kentaro Yasunaka