17 February 2012 Experiment study on heterodyne Laser Doppler Vibrometry with three different structures
Author Affiliations +
Proceedings Volume 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging; 833212 (2012); doi: 10.1117/12.921367
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jianhua Shang, Shuai Yan, Lihong Ren, Shuguang Zhao, Yan He, "Experiment study on heterodyne Laser Doppler Vibrometry with three different structures", Proc. SPIE 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging, 833212 (17 February 2012); doi: 10.1117/12.921367; https://doi.org/10.1117/12.921367
PROCEEDINGS
7 PAGES


SHARE
KEYWORDS
Sensors

Vibrometry

Doppler effect

Signal detection

Heterodyning

Glasses

Acousto-optics

Back to Top