High Sensitive Methane Sensor With Temperature Compensation Based on Selectively Liquid-Infiltrated Photonic Crystal Fibers

Photonic Sensors

Cancan Chen¹  Shoufeng Tang¹  Yi Ding¹  Hai Liu¹  Haoran Wang¹  Wen Zhang¹  Qing Wang¹ 

[1] School of Information and Control Engineering, China University of Mining and Technology;

关键词: Photonic crystal fiber;    methane sensor;    directional resonance coupling;    temperature compensation;   

DOI  :  10.1007/s13320-019-0536-y

来源: DOAJ

【 摘 要 】

Abstract A highly sensitive and temperature-compensated methane sensor based on a liquid-infiltrated photonic crystal fiber (PCF) is proposed. Two bigger holes near the core area are coated with a methane-sensitive compound film, and specific cladding air holes are infiltrated into the liquid material to form new defective channels. The proposed sensor can achieve accurate measurement of methane concentration through temperature compensation. The sensitivity can reach to 20.07 nm/% with a high linearity as the methane concentration is within the range of 0%–3.5% by volume. The proposed methane sensor can not only improve the measurement accuracy, but also reduce the metrical difficulty and simplify the process.

【 授权许可】

Unknown