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Ultrahigh Birefringence and Extremely Low Loss Slotted-core Microstructure Fiber in Terahertz Regime

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A novel slotted-core hexagonal photonic crystal fiber (PCF) for terahertz (THz) wave guiding is proposed in this paper. A trade-off managed between effective material loss (EML) and birefringence for efficient guidance of THz waves is illustrated in this article. The rectangular slot shaped air-holes break the symmetry of the porous-core which offers ultra-high birefringence of 8.8×10-2. The proposed structure offers low bending loss of 1.07×10-34 cm-1 and extremely low effective material loss (EML) of 0.035 cm-1 at an operating frequency of 1.0 THz. In addition other guiding properties such as power fraction, dispersion and confinement loss are also discussed. The proposed THz waveguide can be effectively used for convenient transmission of THz waves.

© 2017 Optical Society of Korea

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