The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2008
Filed:
Mar. 09, 2005
Noboru Uehara, Aichi, JP;
Yuichi Takushima, Tokyo, JP;
Kentaro Yasunaka, Kanagawa, JP;
Santec Corporation, Aichi, JP;
Abstract
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.