基于光子晶体光纤的MZI温度传感特性研究

发布时间：2018-06-21 03:23

  本文选题：光子晶体光纤 + 马赫-曾德干涉仪　； 参考：《光通信研究》2017年03期

【摘要】：采用全矢量有限元法,研究了空气孔为正九边形周期性排列的全内反射型光子晶体光纤的温度传感特性,分析了不同空气孔排列形状、占空比以及波长对温度特性的影响,并与正六边形结构的光子晶体光纤进行了对比。研究表明,空气孔为正九边形周期性排列时,光子晶体光纤模场分布随温度变化显著,其有效折射率和限制损耗的大小与温度成反比。保持孔间距不变,占空比越大,输入波长越长,灵敏度越高。在此基础上,提出了一种正九边形熔接点为锥形的单模光纤-光子晶体光纤-单模光纤马赫曾德干涉仪温度传感器,当波长为1 550nm,占空比为0.6,温度范围为-20~80℃时,该传感结构的温度灵敏度为0.112 2nm/℃。
[Abstract]:The temperature sensing characteristics of totally internal reflection photonic crystal fibers with air holes arranged periodically in a normal nine-sided shape are studied by using full-vector finite element method. The effects of different air orifice arrangement shapes, duty cycle and wavelength on the temperature characteristics are analyzed. It is compared with photonic crystal fiber with hexagonal structure. The results show that the mode field distribution of photonic crystal fiber varies significantly with temperature when the air holes are arranged periodically in a normal nine-sided form. The effective refractive index and limiting loss are inversely proportional to the temperature. The larger the duty cycle, the longer the input wavelength and the higher the sensitivity. On the basis of this, a single mode fiber, photonic crystal fiber and a single mode fiber Mach Zende interferometer temperature sensor with conical junction is proposed. When the wavelength is 1 550 nm, the duty cycle is 0.6, and the temperature range is -2080 鈩，

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