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Proceedings Paper

Michelson all-fiber acceleration seismic geophone with dual-optic routes
Author(s): Yanjun Zhang; Caihe Chen; Yongjie Hao; Guilan Ding; Yuming Cui
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Paper Abstract

This paper describes a Michelson all-fiber acceleration seismic geophone with dual-optic routes. Compared with the single-optic route structure, dual-optic routes geophone exhibits wider frequency response range; meanwhile it also constrains the transverse vibration of the mass, incline and bend of the fiber more efficiently. The seismic geophone consists of Michelson interferometer, sensing element and signal processing system. An alternating current phase tracking (PTAC) homodyne scheme has been used to process output signal of the Michelson interferometer. Experimental results matches well with the theoretical prediction; the working frequency band is 5~535Hz; the acceleration sensitivity is 0.9rad/m/s2; and the non-distortion percentage is smaller than 0.7%.

Paper Details

Date Published: 10 January 2005
PDF: 8 pages
Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.574170
Show Author Affiliations
Yanjun Zhang, Tianjin Univ. (China)
Caihe Chen, Tianjin Univ. (China)
Yongjie Hao, Tianjin Univ. (China)
Guilan Ding, Tianjin Univ. (China)
Yuming Cui, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 5623:
Passive Components and Fiber-based Devices
Yan Sun; Shuisheng Jian; Sang Bae Lee; Katsunari Okamoto, Editor(s)

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