Nodeless antiresonant hollow core fiber for low loss flatband THz guidance
Azra Sadia Sultana, Abdul Khaleque, Kumary Sumi Rani Shaha, Mafin Muntasir Rahman, Md. Sarwar Hosen
Abstract
This paper reveals a THz leading nodeless antiresonant slotted hollow core fiber (NARS-HCF) with low transmission loss and broad band flat near zero dispersion. We have achieved better results in a simpler structure as far as we know: a minimal confinement loss in the order of around 10 −4 dBm -1 and a very low effective material loss of 0.0248 dBm -1 , resulting in a lowest total transmission loss of 0.0254 dBm -1 at 1.27 THz and offering a 0.88 THz (0.8 THz – 1.68 THz) low loss transmission bandwidth with the loss of less than 0.0811 dBm -1 . Additionally, we achieved a 0.0614 ± 0.0468 ps/THz/cm near zero flat dispersion over the widest bandwidth of 1.02 THz (0.80 THz to 1.82 THz). Moreover, our proposed structure can also effectively perform as single mode fiber with excellent bending loss performance, hence, can be useful for efficient THz transmission systems.