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Proceedings Paper

Hybrid-integrated optical acceleration seismometer and its digital processing system
Author(s): De En; Caihe Chen; Yuming Cui; Donglin Tang; Zhengxi Liang; Hongyu Gao
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Paper Abstract

Hybrid-integrated Optical acceleration seismometer and its digital signal processing system are researched and developed. The simple system figure of the seismometer is given. The principle of the seismometer is explicated. The seismometer is composed of a seismic mass,Integrated Optical Chips and a set of Michelson interferometer light path. The Michelson Integrated Optical Chips are critical parts among the sensor elements. The simple figure of the digital signal processing system is given. As an advanced quality digital signal processing (DSP) chip equipped with necessary circuits has been used in its digital signal processing system, a high accurate detection of the acceleration signal has been achieved and the environmental interference signal has been effectively compensated. Test results indicate that the accelerometer has better frequency response well above the resonant frequency, and the output signal is in correspondence with the input signal. The accelerometer also has better frequency response under the resonant frequency. At last, the curve of Seismometer frequency response is given.

Paper Details

Date Published: 14 February 2005
PDF: 10 pages
Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.576277
Show Author Affiliations
De En, Tianjin Univ. (China)
Inner Mongolia Univ. for Nationalities (China)
Caihe Chen, Tianjin Univ. (China)
Yuming Cui, Tianjin Univ. (China)
Donglin Tang, Tianjin Univ. (China)
Zhengxi Liang, Tianjin Univ. (China)
Hongyu Gao, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 5634:
Advanced Sensor Systems and Applications II
Yun-Jiang Rao; Osuk Y. Kwon; Gang-Ding Peng, Editor(s)

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