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:
Feb. 12, 2019
Filed:
Jun. 07, 2017
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
Hamamatsu Photonics K.k., Hamamatsu-shi, JP;
Ntt Advanced Technology Corporation, Kawasaki-shi, JP;
Seiji Toyoda, Atsugi, JP;
Yuzo Sasaki, Atsugi, JP;
Takashi Sakamoto, Atsugi, JP;
Joji Yamaguchi, Atsugi, JP;
Tadashi Sakamoto, Atsugi, JP;
Koei Yamamoto, Hamamatsu, JP;
Masatoshi Fujimoto, Hamamatsu, JP;
Mahiro Yamada, Hamamatsu, JP;
Shogo Yagi, Kawasaki, JP;
Yukihiko Ushiyama, Kawasaki, JP;
Eiichi Sugai, Kawasaki, JP;
Koji Yoneyama, Kawasaki, JP;
Kazuo Fujiura, Kawasaki, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, JP;
NTT Advanced Technology Corporation, Kawasaki-shi, JP;
Abstract
Provided is a swept light source including one end surface coupled to a wavelength filter constituted of a diffraction grating and an end mirror via a light deflector and another end surface including a gain medium facing an output coupling mirror and which configures a laser cavity between the end mirror and the output coupling mirror, wherein a drive voltage having an AC voltage on which a DC bias voltage is superimposed is output from a control voltage source of the light deflector to an electrode pair of an electro-optic crystal, light is radiated from a light emitter to the electro-optic crystal, and incident light from the gain medium incident along an optical axis perpendicular to a direction of an electric field formed by the control voltage is deflected in a direction parallel to the electric field, so that wavelength sweeping is performed.