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:
Mar. 05, 2002
Filed:
Mar. 17, 2000
Applicant:
Inventor:
Yoshinobu Maeda, Mie, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/39 ; H01S 3/00 ;
U.S. Cl.
CPC ...
G02F 1/39 ; H01S 3/00 ;
Abstract
The present invention provides an optical function device which is capable of inverting and amplifying an optical signal of the optical communication wavelength band, and executing operation of an image optical signal, and is operable in a wide temperature range, said optical function device composed of a light transmitting medium containing a rare earth element, comprising a portion thereof doped with per m or more of the rare earth element for inverting an optical signal and a portion thereof doped with per m or more of the rare earth element for amplifying the optical signal with an excitation light superposed thereto.