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. 10, 2019
Filed:
Apr. 03, 2017
Sumitomo Osaka Cement Co., Ltd, Chiyoda-ku, Tokyo, JP;
Takatomo Itou, Chiyoda-ku, JP;
Junichiro Ichikawa, Chiyoda-ku, JP;
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Abstract
Provided is an optical modulator module in which an occurrence of an error burst or an increase of an optical loss caused by a vapor phase transportation material can be effectively suppressed. The optical modulator module includes a substratethat has a pyroelectric effect, an optical waveguidethat is formed on a principal surface of the substrate, a conductive film (not illustrated) that is formed on the substrate, and control electrodes (to) that control a light wave propagated through the optical waveguide. In the optical modulator module, the light wave is input to an end portionof the optical waveguide (or is output from the end portionof the optical waveguide) by a space optical system (not illustrated). Adsorption meansfor adsorbing a vapor phase transportation material is disposed in the vicinity of the end portionof the optical waveguide.