Abstract

This work demonstrates a broadband polarization filter based on copper-filled photonic crystal fiber (CFPCF). The proposed fiber is fabricated using the conventional stack-and-draw method. The polarization filter properties of the proposed CFPCF are investigated numerically by considering the cross-sectional scanning electron microscopy image of the fabricated CFPCF. It is observed that the magnitude of cross talk reached up to $-206\mathrm{dB}$ over 0.8 mm length with a broad bandwidth of 282 nm at a central wavelength of 1790 nm. In addition, the polarization characteristics of the CFPCF including cross talk, central wavelength, and bandwidth can be adjusted by varying the diameter of the copper wire. It is shown that the resonance wavelength of the proposed filter can be tuned over the wide range of wavelengths from 1390 to 1890 nm. We have shown that by adjusting the copper wire diameter to $0.32\mathrm{\Lambda }$ and $0.48\mathrm{\Lambda }\mathrm{\mu m}$ ($\mathrm{\Lambda }$ is pitch size), the proposed filter can operate at communication bands of 1310 and 1550 nm, respectively. The results suggest high-potential of the proposed fiber for polarization filtering and other sensing applications.

© 2019 Optical Society of America

Tunable single-polarization bimetal-coated and liquid-filled photonic crystal fiber filter based on surface plasmon resonance

Chao Liu, Liying Wang, Famei Wang, Chunhong Xu, Qiang Liu, Wei Liu, Lin Yang, Xianli Li, Tao Sun, and Paul K. Chu
Appl. Opt. 58(23) 6308-6314 (2019)

Polarization filter characteristics of photonic crystal fibers with square lattice and selectively filled gold wires

Wan Zhang, Shu-guang Li, Guo-Wen An, Zhen-Kai Fan, and Ya-Jie Bao
Appl. Opt. 53(11) 2441-2445 (2014)

High-birefringence photonic crystal fiber polarization filter based on surface plasmon resonance

Guowen An, Shuguang Li, Xin Yan, Zhenyu Yuan, and Xuenan Zhang
Appl. Opt. 55(6) 1262-1266 (2016)

Polarization filter characters of the gold-coated and the liquid filled photonic crystal fiber based on surface plasmon resonance

Jianrong Xue, Shuguang Li, Yuzhe Xiao, Wei Qin, Xujun Xin, and Xingping Zhu
Opt. Express 21(11) 13733-13740 (2013)

Design of a polarized filtering photonic-crystal fiber with gold-coated air holes

Guangyao Wang, Shuguang Li, Guowen An, Xinyu Wang, Yunyan Zhao, and Wan Zhang
Appl. Opt. 54(30) 8817-8820 (2015)