A modified hexagonal photonic crystal fiber for terahertz applications

作者：Islam Md Saiful^*; Sultana Jakeya; Faisal Mohammad; Islam Mohammad Rakibul^*; Dinovitser Alex; Ng Brian W H; Abbott Derek

来源：Optical Materials, 2018, 79: 336-339.

DOI：10.1016/j.optmat.2018.03.054

• Photonic crystals
• Fibers
• Polarization-maintaining
• Fiber optics communications
• Fibers
• Single-mode
• Terahertz
• Optical waveguide

We present a Zeonex based highly birefringent and dispersion flattened porous core photonic crystal fiber (PC-PCF) for polarization preserving applications in the terahertz region. In order to facilitate birefringence, an array of elliptical shaped air holes surrounded by porous cladding is introduced. The porous cladding comprises circular air-holes in a modified hexagonal arrangement. The transmission characteristics of the proposed PCF are investigated using a full-vector finite element method with perfectly matched layer (PML) absorbing boundary conditions. Simulation results show a high birefringence of 0.086 and an ultra-flattened dispersion variation of +/- 0.03 ps/THz/cm at optimal design parameters. Besides, a number of other important wave-guiding properties including frequency dependence of the effective material loss (EML), confinement loss, and effective area are also investigated to assess the fiber's effectiveness as a terahertz waveguide.

• 出版日期2018-5