3～5μm宽带超低色散平坦硫系光子晶体光纤  

3～5 Microns Chalcogenide Photonic Crystal Fiber with Broadband Ultra-low Flattened Dispersion

作　　者：曹凤珍[1] 张培晴[1,2] 戴世勋[1] 王训四[1] 徐铁峰[1] 聂秋华[1] 

机构地区：[1]宁波大学高等技术研究院红外材料及器件实验室,浙江宁波315211 [2]中山大学光电材料与技术国家重点实验室,广州510275

出　　处：《光子学报》2014年第6期14-19,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61177087;61307060);国家科技部重大国际合作项目(No.2001DFA12040);教育部新世纪优秀人才计划项目(No.NCET-10-0976);浙江省杰出青年基金(No.R1101263);浙江省自然科学基金(No.LQ12F05004);宁波市新型光电功能材料及器件创新团队项目(No.2009B21007);宁波市自然科学基金(No.2012A610116);光电材料与技术国家重点实验室开放基金;宁波大学王宽诚幸福基金资助

摘　　要：利用硫系光子晶体光纤色散可控特性,设计了一种宽带超低色散平坦硫系光子晶体光纤,采用多极法研究了孔间距和占空比等参量对色散曲线的影响.通过优化包层中不同层数空气孔的直径,获得内两层气孔半径为0.7μm,外两层气孔半径为0.8μm和孔间距为5μm的光子晶体光纤结构.模拟结果显示,该光纤在3~5μm波段可实现宽带色散平坦,且色散绝对值低于3.8ps·nm-1·km-1.Using the dispersion controlled feature of chalcogenide photonic crystal fiber, the broadband ultralow dispersion-flattened chalcogenide photonic crystal fibers was designed, and the multipole method was used to research the effects of the hole pitch and the aperture ratio on the dispersion curves. By optimizing the diameter of the air holes of different layers in cladding, the structure with 0.7 μm air hole radius of inside two layers, 0.8μm air hole radius of outer two layers and 5μm hole pitch were obtained. The simulation results show that this structure is broadband flattened dispersion in 3 ~5μm, and the absolute value of dispersion is less than 3.8 ps· nm^-1·km^-1.

关 键 词：光子晶体光纤 平坦色散 多极法 硫系玻璃 中红外 

分 类 号：TN253[电子电信—物理电子学] TN213