Share Email Print
cover

Proceedings Paper • new

High-resolution broadband phase interrogation for fiber optic interferometer using frequency stabilization and PGC demodulation
Author(s): Wenzhu Huang; Wentao Zhang; Shuaijie Miao; Fang Li
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We proposed an high-resolution broadband phase interrogation technique for an interferometric fiber optic sensor which is designed as an unbalance michelson interference structure. The frequency stabilization technique based on PoundDrever-Hall (PDH) method is used for reducing low-frequency phase noise of the laser. An (Piezoelectric Transition) PZT, acting on one arm of the interferometer, is used to generate additional phase modulation. A phase generation carrier (PGC) algorithm is proposed for phase demodulation. The experiment results show that the proposed system has a very wide wavelength detection capability (from 0.1 Hz to 500 Hz) with an ultrahigh resolution of 2 × 10-4 rad@0.1 Hz, and better than 10-5 rad in the frequency range from 1 Hz - 500 Hz.

Paper Details

Date Published: 14 February 2019
PDF: 5 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104844 (14 February 2019); doi: 10.1117/12.2520915
Show Author Affiliations
Wenzhu Huang, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Wentao Zhang, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Shuaijie Miao, Institute of Semiconductors (China)
Fang Li, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

© SPIE. Terms of Use
Back to Top