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. 13, 2005
Filed:
Nov. 29, 2002
Applicant:
Jens Dieckröger, München, DE;
Inventor:
Jens Dieckröger, München, DE;
Assignee:
Finisar Corporation, Sunnyvale, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B006/34 ;
U.S. Cl.
CPC ...
Abstract
A refractive index grating has at least one configuration of heating elements on or adjacent to a wave-guiding structure. Regions are introduced into the wave-guiding structure and/or into an adjoining substrate, which regions have a higher thermo-optical coefficient or a lower thermal conductivity compared to the wave-guiding structure or the substrate. Substantially each heating element is assigned at least one of the regions with a higher thermo-optical coefficient and/or at least one region with a lower thermal conductivity. There is also provided a mode coupler with a refractive index grating of this type.