Ultra-Short Dual-Core Photonic Crystal Fiber Polarization Beam Splitter with Round Lattice and As2S3-Filled Center Air Hole

Photonics

Qiang Qu¹  Xinhe Zhang¹  Yonghui Yang¹  Junbo Lou¹  Shuguang Li² 

[1] School of Electronic and Information Engineering, University of Science and Technology LiaoNing, Anshan 114051, China;State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China;

关键词: photonic crystal fiber;    polarization beam splitter;    extinction ratio;    coupling ratio;   

DOI  :  10.3390/photonics9010036

来源: DOAJ

【 摘 要 】

A circular ultra-short $A{s}_2{S}_3$ filled double-core photonic crystal fiber polarization beam splitter is proposed. The finite element method is used to study the performance of the designed photonic crystal fiber polarization beam splitter. By filling high refractive index $A{s}_2{S}_3$ into the central air hole, the coupling performance of the double-core PCF is improved. By optimizing geometric parameters, the splitting length of the circular beam splitter can be as short as 72.43 $\mathsf{\mu }$m, and the extinction ratio can reach −151.42 dB. The high extinction ratio makes the circular polarization beam splitter have a good beam splitting function. The designed circular double-core photonic crystal fiber has the same cladding pore diameter, which is easier to prepare than other photonic crystal fibers with complex pore structure. Due to the advantages of high extinction ratio, extremely short beam splitting function and simple structure, the designed polarization beam splitter will be widely used in all-optical networks and optical device preparation.

【 授权许可】

Unknown