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Photonic crystal fiber temperature sensor with high sensitivity based on surface plasmon resonance

机译：基于表面等离子体共振的高灵敏度光子晶体光纤温度传感器

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摘要

A high sensitivity photonic crystal fiber (PCF) temperature sensor based on surface plasmon resonance is proposed and evaluated using the finite element method. Besides, the coupling phenomenon is studied. The gold layer deposited on the polishing surface of D-shape PCF is used as the metal to stimulate surface plasma, which can improves the sensitivity. Through exquisite design, the birefringence of the fiber is improved, which makes the loss of y-polarization far greater than the loss of x-polarization. The D-shape fiber avoids filling metal and liquid into the air-holes, which can contact with fluid directly to feel temperature. When the phase matching condition is satisfied, the core mode will couple with the surface plasma mode. The resonance position of y-polarization is very sensitive to the temperature change. The simulation shows that the PCF has high sensitivity of 36.86 nm/degrees C in y-polarization and wide detection that from 10 degrees C to 85 degrees C.
机译：提出了一种基于表面等离子体共振的高灵敏度光子晶体光纤（PCF）温度传感器，并采用有限元方法对其进行了评估。此外，还研究了耦合现象。沉积在D形PCF抛光表面上的金层用作刺激表面等离子体的金属，可以提高灵敏度。通过精巧的设计，光纤的双折射得到了改善，这使得y偏振的损耗远大于x偏振的损耗。 D形纤维避免将金属和液体填充到气孔中，气孔可直接与流体接触以感觉温度。当满足相位匹配条件时，核心模式将与表面等离子体模式耦合。 y极化的共振位置对温度变化非常敏感。仿真显示PCF在y极化方面具有36.86 nm /℃的高灵敏度，并具有从10℃到85℃的宽检测范围。

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