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:
Apr. 06, 1993
Filed:
Dec. 18, 1991
Hirohide Kurakake, Kawasaki, JP;
Haruhiko Tabuchi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A laser amplifier comprises an active layer having a uniform width and a thickness and causing a stimulated emission of photons upon passage of an incident optical beam from an input end to an output end, an optical wave guide layer extending from the input end to the output end for guiding an optical beam therethrough, a first clad layer provided below the waveguide layer, a second clad layer provided above the active layer, a first electrode provided on the second clad layer, a second electrode provided on the first clad layer, a first anti-reflection coating provided on the input end, and a second anti-reflection coating provided on the output end.