Share Email Print
cover

Proceedings Paper

Double-sideband heterogeneous pulse modulation method for distributed acoustic sensing
Author(s): Zhe Ma; Junfeng Jiang; Shuang Wang; Kun Liu; Wenjie Chen; Xuezhi Zhang; Zhenyang Ding; Tiegen Liu
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper, a double-sideband heterogeneous with suppressed carrier (DSBH-SC) pulse modulation method for fiber-optic distributed acoustic sensing is proposed. An electro-optic in-phase/quadrature (I/Q) modulator is used to realize carrier-suppressed double-sideband heterogeneous pulse modulation in which the positive and the negative optical sidebands can carry independent modulation signals. Due to the modulation curve of the electro-optic I/Q modulator irregularly, the factors that influence the performance of the DSBH-SC are analyzed from modulation amplitude and frequency. The analysis shows that the constant frequency modulation on the lower optical sideband while a stable wide band linear frequency chirping on the upper optical sideband can be obtain in appropriate modulation conditions. It presents a method of digital subcarrier modulation for distributed optical sensing.

Paper Details

Date Published: 10 January 2018
PDF: 7 pages
Proc. SPIE 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications, 1061807 (10 January 2018); doi: 10.1117/12.2295651
Show Author Affiliations
Zhe Ma, Tianjin Univ. (China)
Junfeng Jiang, Tianjin Univ. (China)
Shuang Wang, Tianjin Univ. (China)
Kun Liu, Tianjin Univ. (China)
Wenjie Chen, Tianjin Univ. (China)
Xuezhi Zhang, Tianjin Univ. (China)
Zhenyang Ding, Tianjin Univ. (China)
Tiegen Liu, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 10618:
2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications
Xuping Zhang; Hai Xiao; Francisco Javier Arregui; Liquan Dong, Editor(s)

© SPIE. Terms of Use
Back to Top