Title :
Extremely High-Birefringent Asymmetric Slotted-Core Photonic Crystal Fiber in THz Regime
Author :
Islam, Raonaqul ; Habib, Md Selim ; Hasanuzzaman, G.K.M. ; Ahmad, Redwan ; Rana, Sohel ; Kaijage, Shubi Felix
Author_Institution :
Dept. of Electr. & Electron. Eng., Rajshahi Univ. of Eng. & Technol., Rajshahi, Bangladesh
Abstract :
We present a thorough numerical analysis of a highly birefringent slotted porous-core circular photonic crystal fiber (PCF) for terahertz (THz) wave guidance. The slot shaped air-holes break the symmetry of the porous-core which offers a very high birefringence whereas the compact geometry of the circular cladding confines most of the power in the fiber-core. The fiber structure reported in this letter exhibits simultaneously ultrahigh modal birefringence of 7.5 × 10-2 and a very low effective absorption loss of 0.07 cm-1 for y-polarization mode at an operating frequency of 1 THz. It is highly anticipated that the slotted-core waveguide would be of very much convenience in many polarization maintaining THz appliances.
Keywords :
birefringence; holey fibres; microwave photonics; optical fibre cladding; optical fibre losses; optical fibre polarisation; photonic crystals; THz regime; absorption loss; circular cladding; compact geometry; extremely high-birefringent asymmetric slotted-core photonic crystal fiber; frequency 1 THz; highly birefringent slotted porous-core circular photonic crystal fiber; modal birefringence; porous-core symmetry; slot shaped air-holes; slotted-core waveguide; terahertz wave guidance; thorough numerical analysis; y-polarization mode; Absorption; Optical fiber dispersion; Optical fiber polarization; Optimized production technology; Polymers; Birefringence; photonic crystal fiber; polarization; porous-core; terahertz;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2457673
