Low effective material loss microstructure fiber for THz wave guidance

In this paper we report a porous-core photonic crystal fiber having low material loss and nearly zero dispersion which is suitable for THz wave transmission. This proposed design exhibits a low effective material loss which is approximately 0.225 dB/cm at an operating frequency 1.0 THz and nearly zero flattened dispersion of ± 0.05 ps/THz/cm at frequency range of 0.9–1.2 THz. Moreover, other important guiding characteristics including confinement loss and power fraction of the proposed fiber is discussed. The proposed microstructure fiber has potential applications for efficient transmission of THz radiation band.