光学学报, 2017, 37 (3): 0306003, 网络出版: 2017-03-08  

分光比可调的光子晶体光纤耦合器

Coupling-Ratio-Tunable Photonic Crystal Fiber Coupler
作者单位
1 上海理工大学理学院, 上海 200093
2 上海理工大学上海市现代光学重点实验室, 上海 200093
摘要
实验研究了一种磁流体包覆的光子晶体光纤耦合器, 其分光比可由磁场在线调节。实验结果表明, 耦合器耦合区的尺寸越小, 其分光比随磁场的变化越敏感。在外磁场强度为0~14 mT时, 耦合区尺寸为27 μm的耦合器分光比随磁场强度线性变化的灵敏度为0.0289 mT-1。耦合器耦合区尺寸越小, 环境温度对分光比的影响越强。对于实际应用的耦合器, 应综合考虑分光比的磁场调谐特性及温度响应特性, 选择合适参数的光子晶体光纤耦合器。
Abstract
A kind of magnetic-fluid-cladded photonic crystal fiber coupler is designed and investigated experimentally. The coupling ratio of the coupler can be adjusted online by magnetic field. Experimental results indicate that the smaller the coupling area size of the as-fabricated coupler is, the higher the sensitivity of the coupler with respect to magnetic field is. The coupling ratio of the as-fabricated coupler with coupling area size of 27 μm changes linearly with the external magnetic field within the range of 0-14 mT. The achieved sensitivity is 0.0289 mT-1. But the influence of ambient temperature on the coupling ratio will increase when the coupling area size of the as-fabricated coupler decreases. For practical applications, the trade-off between the magnetic tunability of the coupling ratio and the temperature response should be considered comprehensively and the photonic crystal fiber coupler with appropriate parameters should be chosen.

王兆芳, 卜胜利, 苏德龙, 毛连敏. 分光比可调的光子晶体光纤耦合器[J]. 光学学报, 2017, 37(3): 0306003. Wang Zhaofang, Pu Shengli, Su Delong, Mao Lianmin. Coupling-Ratio-Tunable Photonic Crystal Fiber Coupler[J]. Acta Optica Sinica, 2017, 37(3): 0306003.

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