Ultra-Compact Polarization Splitter Based on Silica Liquid Crystal Photonic Crystal Fiber Coupler

Authors

  • Rasha A. Hussein Department of Engineering Applications of Lasers National Institute of Laser Enhanced Sciences, Cairo University, Giza, Egypt , Department of Physics, Faculty of Science Al-Muthana University, Muthana, Iraq
  • Mohamed F. O. Hameed Centre of Photonics and Smart Materials Zewail City of Science and Technology, Sheikh Zayed District, 6th of October City, Giza, Egypt , Department of Mathematics and Engineering Physics, Faculty of Engineering Mansoura University, Mansoura, 35516, Egypt
  • Salah S. Obayya Centre of Photonics and Smart Materials Zewail City of Science and Technology, Sheikh Zayed District, 6th of October City, Giza, Egypt

Keywords:

Beam propagation method, finite difference method, photonic crystal fibers, polarization splitter

Abstract

An ultra-compact polarization splitter based on dual core nematic liquid crystal silica photonic crystal fiber (NLC-PCF) is proposed and analyzed. The refractive index difference between the NLC and silica material guaranties the index guiding through the reported splitter. The dual core NLC-PCF has strong polarization dependence due to the birefringence between the two polarized modes. The coupling characteristics of the proposed design are studied thoroughly using full vectorial fine difference method (FV-FDM) and the propagation analysis is performed by full vectorial finite difference beam propagation method (FVFD-BPM). The numerical results reveal that the reported splitter has short device length of 482 µm with low crosstalk better than -20 dB with wide bandwidths of 31.5 nm and 19 nm for the quasi TE and quasi TM modes, respectively. The compact coupling lengths as well as the low crosstalks over reasonable bandwidths are the main advantages of the reported dual core NLC-PCF.

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Published

2021-08-22

How to Cite

[1]
R. A. . Hussein, . M. F. O. . Hameed, and S. S. . Obayya, “Ultra-Compact Polarization Splitter Based on Silica Liquid Crystal Photonic Crystal Fiber Coupler”, ACES Journal, vol. 30, no. 06, pp. 599–607, Aug. 2021.

Issue

2015: Vol 30 Iss 6

Section

Articles