基于碲酸盐的新型单芯光子晶体光纤偏振分束器  

Single-core PCF Splitter Based on ZnTe Tellurite Glass

作　　者：曹晔[1] 赵舜[1] 童峥嵘[1] 

机构地区：[1]天津理工大学薄膜电子与通信器件重点实验室,天津300384

出　　处：《光子学报》2015年第2期44-48,共5页Acta Photonica Sinica

基　　金：国家高技术研究发展计划(No.2013AA014200);国家自然科学基金(No.61107052);天津市自然科学基金(No.14JCYBJC16500);天津市高等学校科技发展基金(2012)资助

摘　　要：提出了一种基于ZnTe碲酸盐玻璃的单芯光子晶体光纤偏振分束器.在外侧包层纤芯对称位置引入缺陷孔,使缺陷模和纤芯基模发生耦合以实现光束分离.采用全矢量有限元法对所提出的单芯光子晶体光纤偏振分束器的特性进行研究,结果表明:该分束器可以实现1.3μm和1.55μm波长光的分离,并使光束沿X和Y偏振方向同时传播;当光纤长度为15mm时,1.3μm和1.55μm处的串扰值分别低至-45.1dB和-40.2dB,小于-20dB的带宽分别为44.2nm和67.1nm;在传输波长1.3μm和1.55μm处的损耗值为0.063dB和0.048dB;偏振分束器在具有低串扰值的同时,具有较低的限制损耗.A kind of single-core PCF splitter based on tellurite glass was proposed,defected holes were arranged in the outer cladding,they can bring about strong coupling effect between defected mode and the fundamental mode.FEM was used to analysis its characteristics.The simulation results show that this kind of splitter can split light in the bands of 1.3and 1.55μm,propagate along the orthogonal polarized directions.For a propagation distance of 15 mm,the-20 dB bandwidth of crosstalk in 1.3and 1.55μm bands,reach 44.2and 67.1nm.The confinement loss at the wavelength are 0.063 dB and 0.0 48 dB.The proposed splitter has low crosstalk and low confinement loss.

关 键 词：光纤光学 光子晶体光纤 偏振分束器 有限元法 限制损耗 串扰 

分 类 号：O436[机械工程—光学工程]