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:
Mar. 15, 2016
Filed:
Feb. 21, 2014
Sifotonics Technologies Co., Ltd., Woburn, MA (US);
Changhua Chen, Beijing, CN;
Dong Pan, Andover, MA (US);
Yanwu Zhang, Beijing, CN;
Wang Chen, Beijing, CN;
Pengfei Cai, Beijing, CN;
Ching-yin Hong, Lexington, MA (US);
Siying Liu, Xi'an, CN;
SiFotonics Technologies Co, Ltd., Woburn, MA (US);
Abstract
A device, such as a silicon modulator, in accordance with the present disclosure employs PN diodes without sacrificing the modulation depth, while achieving lower loss and better impedance matching to 50-Ohm drivers. In one embodiment, the device includes an input waveguide, an input optical splitter coupled to the input waveguide, first and second optical phase shifters coupled to the input optical splitter, an output optical splitter coupled to the first and second phase shifters, and an output waveguide coupled to the output optical splitter. The phase shifters are designed with variant capacitance per unit length.