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Proceedings Paper

Experiment study on heterodyne Laser Doppler Vibrometry with three different structures
Author(s): Jianhua Shang; Shuai Yan; Lihong Ren; Shuguang Zhao; Yan He
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Paper Abstract

The paper present three different all-fiber heterodyne Laser Doppler Vibrometry (HLDV) for acousto-optic communication according to the theory of the coherent detection. A line width of 1 kHz single mode continuous fiber laser and one telescope with a 30mm aperture are used in all of three HLDV. The first HLDV is made up with one acousto-optic frequency shifter (AOFS) and one balanced detector, the second one is made up with two AOFSs and two balanced detectors, and the third one is made up with two AOFSs and one balanced detector. The corresponding vibration measurements on the piezoelectric ceramic were performed and the results were compared in view of the noise floor and the spectrum distribution under 1kHz. For the low-frequency vibration measurement, the HLDV with two AOFSs and two balanced detectors shows a good application potential.

Paper Details

Date Published: 17 February 2012
PDF: 7 pages
Proc. SPIE 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging, 833212 (17 February 2012); doi: 10.1117/12.921367
Show Author Affiliations
Jianhua Shang, Donghua Univ. (China)
Shuai Yan, Donghua Univ. (China)
Lihong Ren, Donghua Univ. (China)
Shuguang Zhao, Donghua Univ. (China)
Yan He, Shanghai Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 8332:
Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging
Pierre Galarneau; Xu Liu; Pengcheng Li, Editor(s)

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