Hydrostatic pressure sensor based on a gold-coated thin-core fiber modal interferometer and ripple shift measurement

Hydrostatic pressure sensor based on a gold-coated thin-core fiber modal interferometer and ripple shift measurement
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基于镀金薄芯光纤模态干涉仪和纹波位移测量的静水压力传感器

DOI:
10.1016/j.optcom.2012.04.003
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发表时间:
2012-07
影响因子:
2.4
通讯作者:
Tam, H. Y.
Tam, H. Y.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Chen, Daru;Cheng, Xin;Tam, H. Y.

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提出了一种基于镀金薄芯光纤模式干涉仪(TCFMI)的流体静压传感器。由于纤芯失配和光纤端部反射,将细芯光纤拼接到单模光纤上形成单端光纤模式干涉仪(FMI)。研究了基于不同长度薄芯光纤的TCFMIs的相对反射谱。为了提高TCFMI的光学反射率,对TCFMI进行了镀金处理,这也导致了TCFMI的相对反射光谱的涟漪。提出了一种高静压压力传感器测试系统,并对该压力传感器的性能进行了实验研究。传感器的解调采用纯纹波位移测量方法。该压力传感器的灵敏度为44.8pm/MPa,传感范围可达40 MPa。
We propose a hydrostatic pressure sensor based on a gold-coated thin-core fiber modal interferometer (TCFMI). A thin-core fiber is spliced to a single mode fiber forming a single-end fiber modal interferometer (FMI) due to the core mismatch and the fiber end reflection. Relative reflection spectra of TCFMIs based on thin-core fibers with different lengths are investigated. The TCFMI is gold-coated to enhance the optical reflectivity, which also results in the ripple of the relative reflection spectra of TCFMI. A high hydrostatic pressure sensor test system is proposed and the performance of the pressure sensor has been experimentally investigated. A pure-ripple-shift measurement method is used to achieve the demodulation of the sensor. The proposed pressure sensor has a sensing range up to 40MPa and a sensitivity of 44.8pm/MPa.
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发表时间: 1998-06
影响因子: 2.6
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