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Optical Engineering

Hybrid-integrated Michelson fiber optic accelerometer
Author(s): Bo Wu; Caihe Chen; Guilan Ding; Delong Zhang; Yuming Cui
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Paper Abstract

A novel hybrid-integrated fiber optic accelerometer, based on Michelson interferometry, is developed. It makes use of a seismic mass suspended by a transduction fiber in a mass support. The Michelson interferometer is realized by a symmetrical double Y-branching waveguide and three polarizers, which are monolithically integrated on an x-cut, y-propagating LiNbO3 substrate with dimensions of X×Y×Z = 2×38×6 mm. On the distal endfaces of both interferometric arms, high-reflectance aluminum films are directly coated and serve as reflecting mirrors. An alternating current phase tracking (PTAC) homodyne scheme has been employed to process the signal. The performance of a prototype of the accelerometer is characterized. The measured frequency spectrum is in good agreement with the theoretical prediction.

Paper Details

Date Published: 1 February 2004
PDF: 6 pages
Opt. Eng. 43(2) doi: 10.1117/1.1634593
Published in: Optical Engineering Volume 43, Issue 2
Show Author Affiliations
Bo Wu, Tianjin Univ. (China)
Caihe Chen, Tianjin Univ. (China)
Guilan Ding, Tianjin Univ. (China)
Delong Zhang, Tianjin Univ. (China)
Yuming Cui, Tianjin Univ. (China)

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