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:
Nov. 06, 2012
Filed:
Apr. 15, 2010
Chun Ting Lin, Dadu Township, Taichung County, TW;
Wen Jr Jiang, Tucheng, TW;
Jyehong Chen, Zhubei, TW;
Sien Chi, Hsinchu, TW;
Dar Zu Hsu, Xigang Township, Tainan County, TW;
Chun Ting Lin, Dadu Township, Taichung County, TW;
Wen Jr Jiang, Tucheng, TW;
Jyehong Chen, Zhubei, TW;
Sien Chi, Hsinchu, TW;
Dar Zu Hsu, Xigang Township, Tainan County, TW;
Industrial Technology Research Institute, Chutung, Hsinchu, TW;
Abstract
A signal-transmitting system includes a digital-to-analog converter, an optical modulator, first and second electrodes, an optical phase shifter, and an optical coupler. The digital-to-analog converter converts digital data into an electrical analog signal. The optical modulator includes a first optical waveguide configured to transmit a first optical carrier, a second optical waveguide configured to transmit a second optical carrier, a first electrode positioned on the first optical waveguide, and a second electrode positioned on the second optical waveguide. The first and second electrical couplers are configured to couple respective electrical analog signals and electrical carriers to electrodes to generate modulation waves. The modulation waves are different in phase. The optical phase shifter is configured to shift the second modulation wave by a predetermined phase, and the optical coupler is configured to couple the first and second modulation waves to generate an optical output signal.