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. 26, 2021
Filed:
Mar. 07, 2021
Zhejiang University, Hangzhou, CN;
Xiaofeng Jin, Hangzhou, CN;
Donglin Qin, Hangzhou, CN;
Chenghui Zhang, Hangzhou, CN;
Xiangdong Jin, Hangzhou, CN;
Xianbin Yu, Hangzhou, CN;
Shilie Zheng, Hangzhou, CN;
Xianmin Zhang, Hangzhou, CN;
Bo Cong, Hangzhou, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
Abstract
A measurement device for polarization-maintaining optical fiber spindle difference delay is provided. The measurement device comprises a polarization-maintaining fiber (PM) Sagnac interferometer, a signal generator, a microwave detector, a microprocessor. The PM Sagnac interferometer comprises a laser, a photoelectric modulator, and a PM fiber coupler that are connected in sequence. The PM Sagnac interferometer further comprises an optical fiber interface Jand an optical fiber interface Jarranged at the two output ends of the PM fiber coupler, a PM fiber to be measured located between the fiber interface Jand the fiber interface J, and a photodetector arranged at the other output end of the PM fiber coupler.