Tunable Photonic Crystal Fiber Couplers With a Thermo-Responsive Liquid Crystal Resonator
Tunable Photonic Crystal Fiber Couplers With a Thermo-Responsive Liquid Crystal Resonator
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DOI：
10.1109/jlt.2007.915276
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发表时间：
2008-03
影响因子：
4.7
通讯作者：
K. Saitoh;N. Florous;Shailendra K. Varshney;M. Koshiba
中科院分区：
文献类型：
--
作者：
K. Saitoh;N. Florous;Shailendra K. Varshney;M. Koshiba
本文从理论上研究了多芯光子晶体光纤（PCF）耦合器中向列液晶（lc）渗透的热光响应。所提出的PCF耦合器由两个相同的核心组成，其中第三个核心作为液晶谐振器分开。通过适当选择与液晶磁芯相关的设计参数，可以实现单个波长的相位匹配，从而实现输入和输出磁芯之间的热可调谐窄带谐振定向耦合。通过基于有限元和光束传播方法的精确PCF分析，确保了所提出的耦合器设计的正确性。lc基PCF耦合器增强的热光学性能在光热传感应用中具有很高的吸引力。
We theoretically address the thermo-optical response of multicore photonic crystal fiber (PCF) couplers infiltrated with nematic liquid crystals (LCs). The proposed PCF coupler consists of two identical cores separated by a third one which acts as a liquid crystal resonator. With an appropriate choice of the design parameters associated with the liquid crystal core, phase matching at a single wavelength can be achieved, thus enabling thermo-tunable narrow-band resonant directional coupling between the input and the output cores. The verification of the proposed coupler design is ensured through an accurate PCF analysis based on finite element and beam propagation methods. The enhanced thermo-optical properties of LC-based PCF couplers are highly attractive for photo-thermal sensing applications.