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. 01, 2010
Filed:
Jan. 17, 2006
Katsuaki Magari, Atsugi, JP;
Tsutomu Yanagawa, Isehara, JP;
Yoshiki Nishida, Mito, JP;
Hiroyasu Mawatari, Isehara, JP;
Osamu Tadanaga, Zama, JP;
Masaki Asobe, Isehara, JP;
Hiroyuki Suzuki, Tokyo, JP;
Hiroshi Miyazawa, Tokyo, JP;
Junji Yumoto, Tokyo, JP;
Katsuaki Magari, Atsugi, JP;
Tsutomu Yanagawa, Isehara, JP;
Yoshiki Nishida, Mito, JP;
Hiroyasu Mawatari, Isehara, JP;
Osamu Tadanaga, Zama, JP;
Masaki Asobe, Isehara, JP;
Hiroyuki Suzuki, Tokyo, JP;
Hiroshi Miyazawa, Tokyo, JP;
Junji Yumoto, Tokyo, JP;
NipponTelegraph and Telephone Corporation, Chiyoda-ku, Tokyo, JP;
NTT Electronics Corporation, Kanagawa-ku, Yokohama-shi, Kanagawa, JP;
Abstract
A light source apparatus with modulation function has a wavelength conversion module () composed of a nonlinear optical material with a structure having a nonlinear constant modulated periodically. It outputs a difference frequency or sum frequency produced by multiplexing pumping light from semiconductor laser light sources () and () with different wavelengths through a WDM coupler () and by launching the multiplexed light into the optical waveguide. The semiconductor laser light source () includes a diffraction grating. The semiconductor laser light source () includes a section for modulating output light emitted from its semiconductor laser, and is connected to an external FBG () which has a reflection band narrower than a resonance wavelength spacing determined by the device length of the semiconductor laser. The FBG () is supplied with the modulated output.