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. 18, 2014
Filed:
May. 25, 2009
Min-cheol OH, Busan, KR;
Min-Cheol Oh, Busan, KR;
Pusan National University Industry-University Cooperation Foundation, Busan, KR;
Jeongkwan Co., Ltd., Gyeongsangnam-do, KR;
Abstract
Provided is an integrated optical current sensor for measuring the magnitude of current. The integrated optical current sensor is fabricated by integrating optical elements, such as a thermo-optic phase modulator, a waveguide polarizer and an optical coupler, on a single substrate. As compared to the known current sensors using optical fibers, the integrated optical current sensor is more compact and enables measurement of current with higher reliability. Provided also is a method for producing current sensor chips in a large scale by using a process for fabricating integrated optical elements.