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:
Dec. 30, 2003
Filed:
Feb. 20, 2001
John Haig Marsh, Glasgow, GB;
Craig James Hamilton, Bishopton, GB;
Abstract
There is disclosed an improved optical device ( ), eg comprising a semiconductor optically active or optoelectronic devices such as lasers, modulators, amplifiers, switching structures, or the like, mounted on a heatsink ( ) The invention provides an optically active device ( ) comprising a device body ( ) having an active region ( ) and an optically passive region(s) ( ) provided at one or more ends ( ) of the active region ( ); and a heatsink ( ); the device body ( ) and heatsink ( ) being retained in thermal association with one another such that a first end of the at least one of the optically passive region(s) ( ) adjacent an end of the active region ( ) is provided within an area of the heatsink ( ), and a second end of the said at least one optically passive region(s) ( ) is provided outwith the area of the heatsink ( ).