基于扭曲光子晶体光纤的高阶轨道角动量模式发生器。

High-order orbital angular momentum mode generator based on twisted photonic crystal fiber.

作者信息

Fu Cailing, Liu Shen, Wang Ying, Bai Zhiyong, He Jun, Liao Changrui, Zhang Yan, Zhang Feng, Yu Bin, Gao Shecheng, Li Zhaohui, Wang Yiping

出版信息

Opt Lett. 2018 Apr 15;43(8):1786-1789. doi: 10.1364/OL.43.001786.

DOI:10.1364/OL.43.001786

PMID:29652364

Abstract

High-order orbital angular momentum (OAM) modes, namely, OAM and OAM, were generated and demonstrated experimentally by twisting a solid-core hexagonal photonic crystal fiber (PCF) during hydrogen-oxygen flame heating. Leaky orbital resonances in the cladding depend strongly on the twist rate and length of the helical PCF. Moreover, the generated high-order OAM mode could be a polarized mode. The secret of the successful observation of high-order modes is that leaky orbital resonances in the twisted PCF cladding have a high coupling efficiency of more than -20 dB.

摘要

通过在氢氧火焰加热过程中扭转实心六边形光子晶体光纤（PCF），实验产生并演示了高阶轨道角动量（OAM）模式，即OAM和OAM。包层中的泄漏轨道共振强烈依赖于螺旋PCF的扭转速率和长度。此外，所产生的高阶OAM模式可能是一种偏振模式。成功观测到高阶模式的秘诀在于，扭转PCF包层中的泄漏轨道共振具有超过-20 dB的高耦合效率。