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:
Jan. 25, 2005
Filed:
Jan. 28, 2003
Martin Bouda, Sunnyvale, CA (US);
Ken Morito, Kawasaki, JP;
Kazumasa Takabayashi, Kawasaki, JP;
Tadao Nakazawa, Kawasaki, JP;
Naoki Hashimoto, Kawasaki, JP;
Hiroshi Onaka, Kawasaki, JP;
Yuji Kotaki, Kawasaki, JP;
Martin Bouda, Sunnyvale, CA (US);
Ken Morito, Kawasaki, JP;
Kazumasa Takabayashi, Kawasaki, JP;
Tadao Nakazawa, Kawasaki, JP;
Naoki Hashimoto, Kawasaki, JP;
Hiroshi Onaka, Kawasaki, JP;
Yuji Kotaki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A wavelength-selectable laser with a resonance region formed by two reflecting surfaces include a gain medium generating a laser beam, a first filter, and a second filter. The first filter has a first controllable transmission region and transmits a first predetermined wavelength region of the laser beam generated in the gain medium, the first predetermined wavelength region matching the first controllable transmission region. The second filter has a plurality of periodically arranged second transmission regions and transmits a second predetermined wavelength region of the laser beam transmitted by the first filter, the second predetermined wavelength region matching one of the second transmission regions.