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基于四波混频的光纤激光器传感器增敏研究

Sensitivity Enhancement of Fiber Laser Sensors Using Four-Wave Mixing

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摘要

提出一种基于四波混频效应的双波长光纤激光器传感器增敏方法,以提高基于保偏光纤光栅的双波长激光器传感器的灵敏度。双波长输出的波长间隔对温度、应力等外界待测量有很好的传感响应。利用四波混频效应可扩大此波长间隔。本实验中,使用3阶四波混频效应增敏方案可实现传统保偏光纤光栅激光器传感器温度灵敏度自-0.62 pm/℃至-4.32 pm/℃的提升,增敏近7倍。

Abstract

We propose an approach based on the four-wave mixing (FWM) effect for improving the sensitivity of a dual-wavelength fiber laser sensor with polarization-maintaining fiber Bragg grating (PM-FBG). The wavelength interval of the dual wavelength output is proportional to external measures such as temperature and strain. Experimental results show that the wavelength interval can be incresaed using the FWM effect. In particular, we observe that the temperature sensitivity of the conventional laser sensor with PM-FBG is improved from -0.62 pm/℃ to -4.32 pm/℃ while using third-order FWM-based scheme, and a sensitivity enhancement of nearly 7 times is achieved.

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DOI:10.3788/LOP56.170632

所属栏目:功能光纤

基金项目:国家自然科学基金;

收稿日期:2019-03-15

修改稿日期:2019-05-13

网络出版日期:2019-09-01

作者单位    点击查看

刘哲:西南交通大学信息科学与技术学院信息光子与通信研究中心, 四川 成都 611756
邹喜华:西南交通大学信息科学与技术学院信息光子与通信研究中心, 四川 成都 611756
刘璞宇:西南交通大学信息科学与技术学院信息光子与通信研究中心, 四川 成都 611756

联系人作者:刘哲(swjtulz1994@163.com)

备注:国家自然科学基金;

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引用该论文

Zhe Liu, Xihua Zou, Puyu Liu. Sensitivity Enhancement of Fiber Laser Sensors Using Four-Wave Mixing[J]. Laser & Optoelectronics Progress, 2019, 56(17): 170632

刘哲, 邹喜华, 刘璞宇. 基于四波混频的光纤激光器传感器增敏研究[J]. 激光与光电子学进展, 2019, 56(17): 170632

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