摘要
本文提出一种用于高温测量的光子晶体光纤F-P干涉传感器,通过熔接机放电使无截止单模光子晶体光纤(ESM-PCF)一个端面完全塌陷,然后再将其与单模光纤(SMF-28e)熔接起来,最后按照设计长度切断ESM-PCF。由于在熔接点处ESM-PCF完全塌陷使其模场直径扩大,减小了与SMF-28e的模场失配损耗,并提高了熔接面的反射光强。这种方式制作简单,相对于以往的光子晶体光纤F-P干涉传感器具有更高的干涉光强度。实验结果表明,该传感器测量温度可达1100℃,温度灵敏度为29.4nm/℃,可以预见这种结构稳定、线性度好的全光纤传感器在机械、航空、冶金领域等具有一定的潜在应用价值。
A new method of producing a fiber-optic Fabry-Perot Interferometer （FPI） for high-temperature sensing is presented. The sensor is fabricated by fusion splicing a short section of Endlessly SIngle-mode Photonic Crystal Fiber （ESM-PCF） to the cleaved end of a Single-mode Fiber （SMF） with an intentional complete collapse at the splice joint. Compared with the existing PCF-based FPI sensors, the FPI sensor fabricated by using the simple method have a stable sinusoidal interference fringe with higher interference light intensity. The high-temperature response of the FPI sensor was experimentally studied and the results show that the sensor allows liner and stable measurement of temperatures up to 1 100 ℃ with sensitivity of ~29.4 nm/℃, which makes it very attractive for aeronautics and metallurgy areas.
出处
《光电工程》
CAS
CSCD
北大核心
2012年第2期21-25,共5页
Opto-Electronic Engineering
基金
国家自然科学基金(60807019)
教育部新世纪优秀人才支持计划基金项目(NCET-08-0602)
关键词
光纤传感器
法布里-珀罗干涉仪
光子晶体光纤
高温传感器
fiber-optic sensor
Fabry-Perot interferometer
photonic crystal fiber
high temperature sensor
