A polarization filter of gold-filled photonic crystal fiber with regular triangular and rectangular lattices
A polarization filter of gold-filled photonic crystal fiber with regular triangular and rectangular lattices
复制标题
DOI：
10.1016/j.optcom.2014.06.041
复制
发表时间：
2014-11-15
影响因子：
2.4
通讯作者：
Bao, Yajie
中科院分区：
文献类型：
--
作者：
An, Guowen;Li, Shuguang;Bao, Yajie
提出了一种改进的空气孔填充金的光子晶体光纤结构。它由两种空气孔组成，一部分排列成规则的三角形晶格，另一部分排列成矩形晶格，在x-pol和y-pol上分别具有不同的孔间距，这可以增强PCF的双折射，并且一阶表面等离子体激元（SPP）模式也可以被大距离分离。偏振滤波器是基于表面等离子体共振（SPR）现象。用全矢量有限元法进行了数值模拟，结果表明，在两个正交偏振态下，谐振峰出现在不同的波长处。在通信波长为1550 nm时，Y偏振方向的谐振强度可达407 dB/cm，而X偏振方向的损耗很低。这使其成为偏振滤波器器件的有希望的候选者。(C)2014爱思唯尔有限公司版权所有。
A modified structure of photonic crystal fiber (PCF) with gold-filled air holes is presented in this paper. It consists of two kinds of air holes, one part is arrayed in a regular triangular lattice and the other part is arrayed in a rectangular lattice with different hole pitches in x-pol and y-pol, respectively, which can enhance the birefringence of the PCF and the 1st order surface plasmon polariton (SPP) mode can also be separated by a large distance. The polarization filter is based on the phenomenon of surface plasmon resonance (SPR). Numerical simulations with a full vectorial finite element method demonstrate that the resonance peaks occur at different wavelengths in two orthogonal polarization states. It is possible to obtain a resonance strength as high as 407 dB/cm at the communication wavelength of 1550 nm in y-polarized direction while the loss is very low in x-polarized direction. This makes it a promising candidate for polarization filter devices. (C) 2014 Elsevier B.V. All rights reserved.