A fiber micro-vibration sensor based on single-mode fiber ring laser
Chinese Optics Letters, Vol. 7, Issue 1, pp. 26-28 (2009)
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Abstract
A new micro-vibration sensor based on single-mode fiber ring laser is put forward. The Mach-Zehnder interferometric (MZI) detection technique is presented for interrogating laser frequency shift due to the measurand (piezoelectric transducer (PZT) is used to simulate the micro-vibration) induced laser cavity strain from both single- and multi-mode lasers. In the experiment, compared with multi-mode laser sensors, the single-mode laser sensor is proved to be a sensor with high resolution. When the PZT is driven by the analog signal (0.03 rad near 2 kHz), the signal-to-noise ratio (SNR) of output signal from the single-mode laser sensor is close to 55 dB and the sensitivity of the sensor is about 5\times10^{-5} rad/Hz^{1/2}.
© 2009 Chinese Optics Letters
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(060.5060) Fiber optics and optical communications : Phase modulation
(140.3570) Lasers and laser optics : Lasers, single-mode
Citation
Shenglai Zhen, Renzhu Liu, Benli , Jing Zhang, and Baogang Han, "A fiber micro-vibration sensor based on single-mode fiber ring laser," Chin. Opt. Lett. 7, 26-28 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-1-26
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