Fiber laser strain sensor device

被引：16

作者：

Beverini, N.

Maccioni, E.

Morganti, M.

Stefani, F.

Falciai, R.

Trono, C.

机构：

[1] Univ Pisa, Dipartimento Fis E Fermi, I-56127 Pisa, Italy

[2] Ist Nazl Fis Nucl, I-56127 Pisa, Italy

[3] Consorzio Nazl Interuniv Sci Fis & Mat, Sez Pisa, I-56127 Pisa, Italy

[4] IFAC, CNR, I-50019 Florence, Italy

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2007年 / 9卷 / 10期

关键词：

fiber laser sensor; strain measurement; strain sensor;

D O I：

10.1088/1464-4258/9/10/029

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a fiber laser strain sensor (FLSS) with noise-equivalent sensitivity equal to or better than 80 p epsilon(rms) (Hz)(-1/2) at very low frequencies, from 100 mHz to several hundreds of hertz. The strain affects the fiber laser emission wavelength, and an imbalanced Mach-Zender interferometer (MZI) converts wavelength variations into phase-amplitude variations. The sensor has been also tested in the time domain by applying sinusoidal strain bursts: the device also shows a good signal-to-noise ratio at the lowest burst frequencies.

引用

收藏

页码：958 / 962

页数：5

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