Highly birefringent, low loss single-mode porous fiber for THz wave guidance

Publication date: Available online 5 October 2018Source: Results in PhysicsAuthor(s): KM Samaun Reza, Bikash Kumar Paul, Kawsar AhmedAbstractIn this letter, authors have proposed a circular structured photonic crystal fiber for low-loss terahertz wave guiding. Transmission characteristics of the photonic crystal fiber (PCF) have been conducted by implementing a perfectly matched layer (PML) in the boundary using finite element method. Power transmitted through the core has been improved by tuning the geometries of the core air holes. The proposed design at the porosity of 80% and diameter of 304 µm has reported a very low effective material loss of 0.046 cm-1. In the meantime, it reduces the maximum bulk absorption material loss∼ 77%. Moreover, the utmost birefringence of 0.057 is derived at the frequency f = 1.01 THz. Properties like, power fraction of the core air holes, responses of the effective material loss on the basis of geometric parameter, power fraction with respect to diameter, have been also reported and well discussed.

Source: Results in Physics - October 5, 2018 Category: Physics Source Type: research