二氧化钛涂覆的光子晶体光纤传感性能研究

[24]总结本文全面梳理了TiO2涂覆的光子晶体光纤传感器的结构创新与性能优化研究。TiO2作为功能涂层不仅能增强SPR效应，还可通过复合结构保护金属层并提升光场耦合效率。数值仿真显示，非对称气孔布局（如椭圆孔阵列）与复合微光栅设计可显著提高传感灵敏度，其中D型PCF通过侧抛工艺和双膜（TiO2与金属）协同作用实现宽域检测，而U型结构则通过双极化通道扩展动态响应范围。溶胶-凝胶法与原子层沉积等制备工艺有效改善涂层均匀，但纳米级厚度控制仍存在技术波动。当前研究需突破多物理场耦合机制解析、环境稳定性提升及检测选择性优化等核心瓶颈。本文通过对不同类型的传感器进行模型，性能分析，为光通信与生物传感领域提供新思路与新方法。

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