光通信研究Issue(2)：32-35,4.DOI:10.13756/j.gtxyj.2018.02.010
一种可传输42个OAM模的光子晶体光纤
A Type of Photonic Crystal Fiber with 42 OAM Modes
摘要
Abstract
A new type of ring photonic crystal fiber has proposed which can support 42 Orbital Angular Momentum (OAM)an-nular modes.The optical fiber is composed of a central air hole,an annular high refractive index layer and a cladding layer, which includes square air holes and circular air holes.We simulate and analyze the mode properties and propagation effects of OAM by finite-element analysis.The simulation results indicate that the mode index difference can be maintained above 3.45 × 10-3.Therefore,it can effectively reduce the modal coupling in the fiber with small dispersion values for all modes (the dispersion of HE2,1 is only 53.29 ps/(nm·km)).In addition,the optical energy is mainly concentrated in the high re-fractive index region,and the annular region does not need additional doping to obtain high refractive index.关键词
轨道角动量/光子晶体光纤/有效折射率/色散Key words
orbital angular momentum/photonic crystal fibers/effective refractive index/dispersion分类
信息技术与安全科学引用本文复制引用
杨红红,陈鹤鸣,白秀丽..一种可传输42个OAM模的光子晶体光纤[J].光通信研究,2018,(2):32-35,4.基金项目
国家自然科学基金资助项目(61077084,61571237) （61077084,61571237）
江苏省自然科学基金资助项目(BK20151509) （BK20151509）
