光纤萨格纳克干涉仪酒精未充满温度传感器中的现象。

Phenomenon in an alcohol not full-filled temperature sensor based on an optical fiber Sagnac interferometer.

机构信息

Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China.

出版信息

Opt Lett. 2012 Nov 15;37(22):4789-91. doi: 10.1364/ol.37.004789.

DOI:10.1364/ol.37.004789

Abstract

An alcohol not full-filled high-birefringence photonic crystal fiber (HiBi-PCF) temperature sensor based on an optical fiber Sagnac interferometer (OFSI) is demonstrated and investigated in detail. A new phenomenon that the resonant dip wavelengths of the temperature sensor blueshift with temperature increasing is observed, which is contrary to that of the previously reported alcohol filled HiBi-PCF OFSI temperature sensor. By considering the influences of the group birefringence and the thermo expansion of alcohol, this phenomenon is explained very well. The temperature sensitivity of the proposed sensor is about -1.17 nm/°C and is only one-sixth of that of the alcohol full-filled HiBi-PCF OSFI.

摘要

一种基于光纤萨格纳克干涉仪（OFSI）的高双折射光子晶体光纤（HiBi-PCF）酒精未满温度传感器得到了演示和详细研究。观察到一个新现象，即温度传感器的谐振峰波长随温度升高而蓝移，这与之前报道的填充酒精的 HiBi-PCF OFSI 温度传感器的情况相反。通过考虑群双折射和酒精热膨胀的影响，很好地解释了这一现象。所提出的传感器的温度灵敏度约为-1.17nm/°C，仅是填充酒精的 HiBi-PCF OSFI 的六分之一。