Abstract

A novel porous-core photonic crystal fiber is presented, and its guiding properties are numerically investigated by using the finite element method. It is demonstrated that by introducing a rhombic-shaped core made of circular air holes inside the conventional hexagonal cladding, it is possible to obtain very low bending loss of $3.04\times {10}^{-11}{\mathrm{cm}}^{-1}$ at the operating frequency of 1.0 THz. In addition to this, low effective material loss of $0.089{\mathrm{cm}}^{-1}$ and very small confinement loss of $1.17\times {10}^{-3}\mathrm{dB}/\mathrm{cm}$ are achieved for optimal design parameters. Other guiding properties, including effective area, dispersion, and higher order mode characteristics are also discussed thoroughly. The design of this porous fiber is relatively simple, since it contains fewer air holes and consists of circular air holes only. Due to promising wave-guiding properties, the proposed fiber would have a great potential for terahertz imaging and flexible communication applications.

© 2016 Optical Society of America

Polarization-maintaining low-loss porous-core spiral photonic crystal fiber for terahertz wave guidance

Md. Rabiul Hasan, Md. Shamim Anower, Md. Ariful Islam, and S. M. A. Razzak
Appl. Opt. 55(15) 4145-4152 (2016)

Extremely low loss porous-core photonic crystal fiber with ultra-flat dispersion in terahertz regime

Md. Shariful Islam, Mohammad Faisal, and S. M. Abdur Razzak
J. Opt. Soc. Am. B 34(8) 1747-1754 (2017)

Ultra low-loss hybrid core porous fiber for broadband applications

Md. Saiful Islam, Jakeya Sultana, Javid Atai, Derek Abbott, Sohel Rana, and Mohammad Rakibul Islam
Appl. Opt. 56(4) 1232-1237 (2017)

Ultrahigh birefringence, ultralow material loss porous core single-mode fiber for terahertz wave guidance

Kawsar Ahmed, Sawrab Chowdhury, Bikash Kumar Paul, Md. Shadidul Islam, Shuvo Sen, Md. Ibadul Islam, and Sayed Asaduzzaman
Appl. Opt. 56(12) 3477-3483 (2017)

Design and numerical analysis of a THz square porous-core photonic crystal fiber for low flattened dispersion, ultrahigh birefringence

Jianfeng Luo, Fengjun Tian, Hongkun Qu, Li Li, Jianzhong Zhang, Xinhua Yang, and Libo Yuan
Appl. Opt. 56(24) 6993-7001 (2017)