基于光纤光栅端面塑料微半球的F-P光纤多参量传感器
首发时间:2015-01-29
摘要:在本文中,我们利用光纤光栅对温度的敏感,微半球结构的F-P腔对压力和折射率敏感,成功的制作出一种F-P光纤多参量传感器,用来测量温度、压力和折射率的变化。该传感器可以利用光纤光栅波长峰值的位置变化测量温度,同时利用干涉光谱的对比度和波长位置实现对环境折射率和压力的测量,有效解决了三者测量交叉敏感的问题。利用F-P传感器,我们实现了1.33到1.64范围内折射率的测量在1.33到1.46折射率测量范围内,光功率的敏感度为187.5 dB/RIU,在1.46到1.64的折射率测量范围内,光功率的敏感度为62.1 dB/RIU;利用压力对微半球的应力变化,实现了在0 Pa到3 MPa的范围内压强压强灵敏度最大为2.55 nm/MPa。
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Micro-hemisphere Based on FBG and F-P Multi-parameter Fiber Sensor
Abstract:In this paper, based on the sensitivity of FBG to temperature, a F-P micro-hemisphere multi-parameter fiber sensor is proposed and used to measure the external refractive index and pressure. The sensor utilizes the peak wavelength shift of FBG to measure the difference of temperature, meanwhiles uses the interference spectrum contrast and the dip wavelength to measure the external refractive index and pressure, which can solve the problem of cross sensitivity effectively. For a fabricated F-P fiber sensor, the refractive index sensitivities are 187.5 dB/RIU and 62.1 dB/RIU in the range of 1.33-1.46 and 1.41-1.64, respectively. Using the thickness change of micro hemisphere to pressure, and the obtained maximum pressure sensitivity is 2.55 nm/MPa from 0 Pa to 3MPa.
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No.4627288103073014****
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基于光纤光栅端面塑料微半球的F-P光纤多参量传感器
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