基于表面等离子体共振的双通道光子晶体光纤温度传感器

Two-channel photonic crystal fiber temperature sensor based on surface plasmon resonance

提出了一种高灵敏度双待测物质通道的宽温度范围区间的基于表面等离子体共振的光子晶体光纤(SPR-PCF)型传感器。利用SPR技术,通过纤芯损耗谱测量共振波长的变化达到对不同温度测量的目的,并且结构简单,易于测量操作,其工作的波长范围可以调节。实验结果表明:其温度测量区间为-80~80℃,可以得到最大光谱灵敏度3 nm/℃,所提出的光纤传感装置在传感领域具有很大的研究价值。

A photonic crystal fiber based on sunface plasmon resonance(SPR-PCF)sensor with a wide temperature range of high sensitivity dual-test material channel is proposed.Using SPR technology,the change of resonance wavelength is measured by the core loss spectrum to achieve the purpose of measuring different temperatures.And the structure is simple,easy for measurement operation,and the wavelength range of its operation can be adjusted.The experimental results show that the temperature measurement interval is-80℃to 80℃,and the maximum spectral sensitivity of 3 nm/℃can be obtained.The proposed fiber-optic sensing device has great research value in sensing field.