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:
Feb. 10, 1987
Filed:
Jan. 18, 1985
Yoshikazu Nishiwaki, Osaka, JP;
Yozo Nishiura, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
The present invention provides optical integrated circuits in which both a light function zone and a light reception zone are monolithically formed on the same substrate to obtain high reliability and low noise and loss. The optical integrated circuits according to the present invention have improved electrode structure formed on a light wave guide layer to apply a major portion of the electric field generated by the current flowing in the electrode structure within the light wave guide layer to thus improve light receiving sensitivity. Further, the optical integrated circuits according to the present invention have the light reception zone of the large photoconductive effect on the substrate to develop a light receiving sensitivity to the light function zone without affecting propagation loss.