Plasmonic Polarization Beam Splitter Based on Dual-Core Photonic Crystal Fiber

被引：28
作者：
Fan, Zhenkai [1 ,2 ]
Li, Shuguang [1 ]
Liu, Qiang [1 ]
Li, Jianshe [1 ]
Xie, Yang [2 ]
机构：
[1] Yanshan Univ, Coll Sci, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Lab Opt Phys, Beijing 100190, Peoples R China
来源：
PLASMONICS | 2015年 / 10卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Dual-core photonic crystal fiber; Surface plasmon resonance; Polarization beam splitter; FINITE-ELEMENT;
D O I：
10.1007/s11468-015-9925-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, two kinds of novel plasmonic polarization beam splitters based on dual-core photonic crystal fiber (DC-PCF) have been designed and analyzed through the full-vector finite element method. The metallic gold is used as the surface plasmon resonance (SPR) active metal. The coupling characteristics of the designed DC-PCF can be enhanced by the resonant coupling between the second-order surface plasmon polariton (SPP) mode and the core-guided modes. A gold layer in the designed DC-PCF is introduced to achieve an perfect splitting performance and an ultra-bandwidth compared to the designed DC-PCF with gold wire. Numerical results show the ultra-bandwidth of core A and B of the polarization beam splitter with gold layer can reach 210 and 220 nm, as the extinction ratio better than -20 dB, covering the E, S, C, and L optical communication bands. The extinction ratios of core A and B can reach to -84 and -46 dB at the wavelength of 1.55 mu m, respectively, and the length of splitter is 0.542 mm.
引用
收藏
页码：1283 / 1289
页数：7
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