光子晶体光纤作为新一代光纤和传统光纤相比具有许多独特的优点,因此研究基于光子晶体光纤的传感器已成为光纤传感技术领域的一个热点.该文在国际上首次报道了系列基于光子晶体光纤的法布里-珀罗干涉传感器,包括基于空芯光子晶体光纤的法布里-珀罗干涉应变、温度传感器;基于实心单模光子晶体光纤的法布里-珀罗干涉温度、折射率传感器;基于飞秒和157nm激光器微加工制作的实心光子晶体光纤法布里-珀罗干涉高温应变传感器.这些新型光子晶体光纤干涉传感器具有对温度不敏感、精度高、可靠性好、耐恶劣环境等突出优点,可望在能源、交通、航天航空、生化等领域得到重要应用.%Photonic crystal fibers (PCFs) have many unique advantages as a new generation of optical fibers when compared with conventional optical fibers. Hence, study on fiber-optic sensors based on PCFs has become one of the hot topics in the field of optical fiber sensing. In this paper, a series of fiber-optic Fabry-Perot interferometric (FFPI) sensors based on PCFs are reported for the first time to our knowledge, including FFPI strain and temperature sensors based on hollow core PCF; FFPI temperature and refractive index sensors based on solid core single-mode PCF; FFPI high temperature strain sensor based on solid core PCF fabricated by fs and 157nm lasers. These novel PCF-based FFPI sensors have many outstanding advantages, such as insensitive to temperature change, high accuracy, good reliability, capability to operate in harsh environments, etc. It is anticipated that they would find important applications in many areas, such as energy, transportation, aerospace, biochemical, etc.
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