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. 15, 2000
Filed:
Sep. 18, 1997
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A composite optical device having a high efficiency of coupling a laser diode and an optical device and a method of producing the composite optical device. The composite optical device connects a laser diode with a first mesa including an active layer on a (001) plane of a compound semiconductor substrate via a first cladding layer and an optical device provided with a second mesa including an optical waveguide layer formed on the (001) plane via a second cladding layer, wherein one end of the active layer and one end of the optical waveguide layer oppose each other at a distance smaller than the thicknesses of the first and second cladding layers. At least the second cladding layer is grown in an ambient supplemented with HCl to produce a planar surface.