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Bandgap tuning through material anisotropy as a novel physical mechanism for liquid crystal filled photonic crystal fiber sensors

机译:通过材料各向异性的带隙调谐作为液晶填充光子晶体光纤传感器的新型物理机制

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摘要

Bandgap guidance in photonic crystal fibers (PCF) is strongly selective spectrally and in this sense resembles guidance in fibers with Bragg gratings. The photonic band-edge shifts when the optical properties of the material in the fiber are affected by external factors such as strain, temperature, pressure, static fields, chemical vapour penetration etc. This analogy allows for the development of optical sensors with similar principle of operation as fibers with Bragg gratings, however with novel sensing characteristics. Here we study theoretically PCF filled with LC when material anisotropy plays a strong role in the creation of the bandgap.
机译:光子晶体光纤(PCF)中的带隙引导在光谱上具有很强的选择性,在这种意义上类似于带布拉格光栅的光纤中的引导。当光纤中材料的光学特性受到诸如应变,温度,压力,静态场,化学蒸汽渗透等外部因素的影响时,光子带边移动。这种类比允许开发具有以下原理的光学传感器:可以与布拉格光栅一起用作光纤,但是具有新颖的传感特性。在这里,我们从理论上研究了材料各向异性在带隙的产生中起着重要作用的PC填充LC的PCF。

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