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. 09, 2003
Filed:
Sep. 24, 2001
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
To provide a heater module which can improve the temperature uniformity in an optical waveguide while keeping the power consumption and the thickness of the optical waveguide module. A heater module in accordance with the present invention is a heater module for heating an optical waveguide device so as to regulate its temperature; and comprises a heat-generating circuit adapted to generate heat when energized, and a heat-transmitting section disposed on the upper face of the heat-generating circuit and formed with a recessed groove portion for mounting the optical waveguide device When the optical waveguide device is mounted on the bottom face of the heat-transmitting section formed with the recessed groove section, the optical waveguide device can be heated not only from its bottom face, but also from its side faces by edge parts constituting the recessed groove portion, whereby the temperature uniformity can be enhanced.