https://doi.org/10.1140/epjd/s10053-022-00445-z
Regular Article – Optical Phenomena and Photonics
Design of polarization splitter based on dual-core surface plasmon resonance photonic crystal fiber
Department of Electrical and Electronics Engineering, Alagappa Chettiar Government College of Engineering and Technology, Karaikudi, Tamilnadu, India
a
arunyarevathiresearch@gmail.com
Received:
4
May
2022
Accepted:
23
June
2022
Published online:
7
July
2022
In this article, a solid silica core plasmonic photonic crystal fiber-based polarization splitter is proposed to concurrently achieve a short length, good extinction ratio, and acceptable bandwidth at communication wavelength. The model consists of dual-core design with a series of air holes arranged symmetrically. The surface plasmon resonance (SPR) active metal is metallic gold. Resonant coupling between the second-order surface plasmon polaritons (SPP) mode and the core-guided modes can improve the coupling characteristics of the developed dual-core photonic crystal fiber (DC-PCF). A complete analysis was performed using the finite element method for wavelengths from 1200 to 2100 nm. The splitter extinction ratio at the 1.55 µm wavelength is 149.9 dB, which is better than − 20 dB. The splitter has a short length of 34 µm and a bandwidth of 200 nm. In comparison to the designed DC-PCF with gold wire, a gold layer is put into the designed DC-PCF to achieve excellent splitting performance and reasonable bandwidth. Therefore, the proposed design proves to be highly applicable in fiber-optic communication systems.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022
