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. 12, 1989
Filed:
Aug. 17, 1987
Makoto Minakata, Sendai, JP;
Kazunori Miura, Sendai, JP;
Sumitomo Special Metal Co., Ltd., Osaka, JP;
Abstract
The present invention provides a wide band optical modulator comprising an optical waveguide which is provided on a substrate and comprises a substance having electrooptic effects, a laminate which is provided on the optical waveguide and comprises a substance having a refractive index smaller than that of the optical waveguide, and two traveling-wave electrodes which are provided opposite to each other on the parallel side surfaces of the laminate in the traveling direction of light so as to hold the laminate therebetween. When the laminate provided on the optical waveguide is replaced by a gap, similar effects to those of the above-described optical modulator can be obtained.