Single-mode porous fiber for low-loss polarization maintaining terahertz transmission

• DOI: 10.1117/1.oe.55.7.076114
• Publication Date: 2016-07-26T04:32:17Z
• Authors: Sohel Rana; Md. Saiful Islam; Mohammad Faisal; Krishna Chandra Roy; Raonaqul Islam; Shubi F. Kaijage
• Keywords: Transmission loss

We report on a polymer-based porous-core photonic crystal fiber for simultaneous high-birefringent and low-loss propagation of narrowband terahertz (THz) electromagnetic waves. The high birefringence is induced by using rotated elliptical air holes inside the porous-core. numerically analyzed with an efficient finite-element method. simulation results exhibit extremely ∼0.042 very low effective material loss ∼0.07 cm−1 at operating frequency 1 THz. Moreover, we have found optimal rotation angle (θ)=n30 deg (n odd integer). Other modal features fiber, such as confinement loss, power fraction, area, bending dispersion, also been analyzed. anticipate that proposed would be suitable in polarization maintaining THz wave guidance applications.