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:
Jun. 28, 1988
Filed:
Dec. 23, 1985
Applicant:
Inventors:
Assignee:
Omron Tateisi Electronics Company, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9613 ; 350 9614 ; 350 9612 ;
Abstract
An optical waveguide path and an optical branch path branching from the waveguide path are formed in an optical material which is variable in refractive index with the variation of temperature. A heat generator is provided in the vicinity of the branching portion of the waveguide path. The heat of the generator produces in the optical material a temperature gradient in a direction parallel with a plane including the waveguide path and the branch path. The temperature gradient gives the optical material a temperature gradient, by which a light beam propagating through the waveguide path is deflected for switching.