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基于液晶填充的全内反射型光子晶体光纤的温度传感特性

, PP. 380-384

Keywords: 光通信,温度传感特性,有效折射率模型,光子晶体光纤,液晶填充,全内反射

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Abstract:

在实心光子晶体光纤包层的空气柱中填充向列相液晶,选用液晶的折射率在所研究的温度和波长范围内小于光纤背景玻璃的折射率,形成全内反射型光子晶体光纤。采用空间填充基模折射率法求得填充液晶包层的有效折射率,用阶跃有效折射率模型研究了液晶填光子晶体光纤的温度传感特性,并进行了数值计算。结果表明,液晶填充全内反射型光子晶体光纤的有效折射率和等效芯半径随温度升高而增大,在温度接近液晶相变点附近增大更快,二阶模截止波长随温度升高而减小,在温度接近液晶相变点附近减小更快。

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