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:
Oct. 31, 2017
Filed:
Jan. 27, 2017
Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CN;
Yaming Li, Beijing, CN;
Buwen Cheng, Beijing, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
An electro-absorption modulator, comprising: a substrate layer, including a silicon substrate and an oxide layer disposed on the silicon substrate; top-layer silicon, formed on the oxide layer, where a waveguide layer is formed on the top-layer silicon; a doping layer, including a first doping panel and a second doping panel, where a first-type light doping area is formed on the first doping panel, a second-type light doping area is formed on the second doping panel; and a modulation layer, disposed on the waveguide layer and connected in parallel to the PIN junction. For an incident beam with a specific wavelength, when a modulating electrical signal is reversely applied to the PIN junction, a light absorption coefficient of the modulation layer for the beam changes with the modulating electrical signal, and after the beam passes through a modulation area, optical power of the beam changes.