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首页> 外文会议>International Conference on Measuring Technology and Mechatronics Automation >High Speed Demodulation System of FBG-EFPI Hybrid Sensor Based on Fourier Domain Mode-Locked Laser
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High Speed Demodulation System of FBG-EFPI Hybrid Sensor Based on Fourier Domain Mode-Locked Laser

机译：基于傅里叶域锁模激光的FBG-EFPI混合传感器高速解调系统

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摘要

The complicated sensor FBG-EFPI with high speed demodulation has become one of the central issues of optical fiber sensing field in the engineering application. Currently, the existing FBG-FP composite sensor has problems such as complicated fabrication and slow demodulation. Aiming at these problems, this paper proposes a new high-speed demodulation method based on Fourier domain mode-locked(FDML) laser. Different from the pulsed light reflected in the optical time domain, this paper uses continuous light scanning, the scanning frequency can reach 40khz, and the scanning range is about 20nm. Experiment result shows the temperature sensitivity of FBG and EFPI are 10.9pm/°C and 0.42pm/°C respectively with the temperature change from 20 °C, and at room temperature, with the strain change from 0~500ue, the strain sensitivity of FBG and EFPI are 1.17pm/µε and 1.24pm/µε respectively.
机译：具有高速解调功能的复杂传感器FBG-EFPI已成为工程应用中光纤传感领域的核心问题之一。当前，现有的FBG-FP复合传感器存在诸如制造复杂和解调缓慢的问题。针对这些问题，本文提出了一种新的基于傅里叶域锁模（FDML）激光器的高速解调方法。与光学时域反射的脉冲光不同，本文采用连续光扫描，扫描频率可以达到40khz，扫描范围约为20nm。实验结果表明，温度从20°C改变时，FBG和EFPI的温度敏感性分别为10.9pm /°C和0.42pm /°C，而在室温下，应变变化从0〜500ue时，FBG和EFPI的温度敏感性为FBG和EFPI分别为1.17pm / µε和1.24pm / µε。

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