Michelson all-fiber acceleration seismic geophone with dual-optic routes

Yanjun Zhang; Caihe Chen; Yongjie Hao; Guilan Ding; Yuming Cui

doi:10.1117/12.574170

10 January 2005 Michelson all-fiber acceleration seismic geophone with dual-optic routes

Yanjun Zhang, Caihe Chen, Yongjie Hao, Guilan Ding, Yuming Cui

Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.574170
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

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%.

Citation Download Citation

Yanjun Zhang, Caihe Chen, Yongjie Hao, Guilan Ding, and Yuming Cui "Michelson all-fiber acceleration seismic geophone with dual-optic routes", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); https://doi.org/10.1117/12.574170

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