A polarized filtering gold-coated photonic crystal fiber at 1.55 μm based on surface plasmon resonance

Pengxiang Wang; Sibo Wang; Maosheng Yang; Xiaoxian Song; Haiting Zhang; Mingyang Chen; Jianquan Yao

doi:10.1117/12.2590142

18 March 2021 A polarized filtering gold-coated photonic crystal fiber at 1.55 μm based on surface plasmon resonance

Pengxiang Wang, Sibo Wang, Maosheng Yang, Xiaoxian Song, Haiting Zhang, Mingyang Chen, Jianquan Yao

Proceedings Volume 11780, Global Intelligent Industry Conference 2020; 1178015 (2021) https://doi.org/10.1117/12.2590142
Event: Global Intelligent Industry Conference 2020, 2020, Guangzhou, China

Abstract

In this paper, a polarization filter based on photonic crystal fiber (PCF) with nanoscale gold film is proposed and analyzed theoretically. The cross-section of the structure is composed of four-layer air holes with a hexagonal lattice and two symmetrical air holes in the sub-internal layer are coated with gold film. We research that the PCF structure parameters affect the performances of the polarization filter through employing the finite element method. It is indicated by the numerical results that the resonance strength in y-polarization direction can reach a most value of 272.8 dB/cm at the communication wavelength of 1.55 μm. The extinction ratio can be better than 20 dB within a wavelength range from 1.45 μm to 1.75 μm when the length of the PCF is longer than 500μm. Therefore, such a length can make the communication filtering effect be realized using a shorter fiber. The calculated results can provide some references to the design of polarization micro-filter devices.

Citation Download Citation

Pengxiang Wang, Sibo Wang, Maosheng Yang, Xiaoxian Song, Haiting Zhang, Mingyang Chen, and Jianquan Yao "A polarized filtering gold-coated photonic crystal fiber at 1.55 μm based on surface plasmon resonance", Proc. SPIE 11780, Global Intelligent Industry Conference 2020, 1178015 (18 March 2021); https://doi.org/10.1117/12.2590142

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