期刊
IET COMMUNICATIONS
卷 10, 期 16, 页码 2179-2183出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-com.2016.0227
关键词
optical fibre dispersion; finite element analysis; porous materials; photonic crystals; holey fibres; frequency 1 THz; sol-gel technique; capillary stacking; fibre dispersion; confinement loss; single-mode properties; modal characteristics; finite-element method; core air holes; terahertz wave guidance; THz regime; ultra-low material loss; porous core photonic crystal fibre
An extremely low-loss porous core circular photonic crystal fibre is presented for terahertz (THz) wave guidance. Much of attention is given to the geometries of the fibre to increase the fraction of power transmitted through core air holes. The finite-element method has been used to compute the modal characteristics of the fibre. Simulation results exhibit an ultra-low material loss of -0.05 cm(-1) which is one-fourth of the bulk material loss and almost half of the useful power goes through core air holes at a frequency f = 1 THz. Besides, single-mode properties, confinement loss and dispersion of the fibre are rigorously discussed. The proposed fibre can be fabricated using capillary stacking or sol-gel technique and is useful for transmission applications in the THz frequency band.
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