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. 07, 2025
Filed:
Nov. 15, 2022
Zhigang Zhou, San Jose, CA (US);
Kevin Boyd, San Jose, CA (US);
Guang-hua Duan, San Jose, CA (US);
Min Huang, San Jose, CA (US);
Zhenming Xie, San Jose, CA (US);
Rihao LI, San Jose, CA (US);
Qiang Liu, San Jose, CA (US);
Huixian Wen, San Jose, CA (US);
Jianguo Wang, San Jose, CA (US);
Zhigang Zhou, San Jose, CA (US);
Kevin Boyd, San Jose, CA (US);
Guang-Hua Duan, San Jose, CA (US);
Min Huang, San Jose, CA (US);
Zhenming Xie, San Jose, CA (US);
Rihao Li, San Jose, CA (US);
Qiang Liu, San Jose, CA (US);
Huixian Wen, San Jose, CA (US);
Jianguo Wang, San Jose, CA (US);
O-Net Communications, Inc., San Jose, CA (US);
Abstract
An external cavity tunable laser includes a gain medium module to generate a broadband optical spectrum covering a predetermined wavelength range; a collimate lens turning a diverging beam into a collimated beam; a pair of etalons to tune frequency; an actuator to adjust an external cavity optical pathlength; a bandpass filter to block one or more frequencies outside the predetermined wavelength range; a beam splitter to split a percentage of the beam to a photodetector; a reflection mirror for feedback to gain medium waveguide; an isolator for preventing reflecting light back to the external cavity; and a hermetically sealed housing less than 0.15 cubic centimeters.