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:
Sep. 25, 2001
Filed:
Apr. 24, 2000
Applicant:
Inventors:
Roland Mueller-Fiedler, Leonberg, DE;
Winfried Bernhard, Gerlingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/01 ; G02F 1/03 ; G02F 1/00 ; G02F 1/035 ; G02F 1/295 ;
U.S. Cl.
CPC ...
G02F 1/01 ; G02F 1/03 ; G02F 1/00 ; G02F 1/035 ; G02F 1/295 ;
Abstract
The thermooptic modulator includes a wave guide (,) having a switching section (,), a refracting section (,) bordering the switching section (,) and extending transversely to a signal propagation direction (,) in the wave guide and a first heating element (,) extending on the refracting section (,) along a boundary (,) between the wave guide (,) and the refracting section (,). In order to improve signal suppression when the modulator is switched to an impermable state, a second heating element (,) is provided extending on the wave guide (,) along the boundary (,).