1. High-Loss Dual-Channel Broadband Photonic-Crystal Fiber Polarization Filter Based on Surface Plasmon Resonance.
- Author
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Wang, Qianxu, Liu, Fei, Zhang, Ailing, Ren, Qiming, Ma, Yini, Chen, Zhipan, Ma, Yunxia, and Liu, Yang
- Subjects
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PHOTONIC crystal fibers , *SURFACE plasmon resonance , *OPTICAL polarizers , *OPTICAL fiber communication - Abstract
In this paper, we propose a dual-channel broadband photonic-crystal fiber polarization filter with high loss based on surface plasmon resonance. We carefully design gold-coated elliptical air hole structure to improve the confinement loss and the isolation of x-polarized and y-polarized guided modes. Multi-order plasmonic modes are excited to broad the filtering band. Moreover, in view of our simulation results, we demonstrate that plasmonic resonance occurs at the wavelength, where birefringence abnormally changes; also, complete and incomplete mode coupling are able to be distinguished by birefringence. At communication wavelengths of 1550 and 1318 nm, the calculated confinement loss of x-polarized and y-polarized core modes are 744.63 and 1089 dB/cm, with crosstalk up to – 1282.54 and 2233.46 dB, respectively. The proposed dual-channel polarization filter will be a good choice for optical fiber communication. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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