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Transmission loss and dispersion in plastic terahertz photonic band-gap fibers |
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| Authors: | YF Geng XL Tan P Wang JQ Yao |
| Institution: | (1) College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin, 300072, P.R. China;(2) Key Laboratory of Optoelectric Information Science and Technology, Ministry of Education, Tianjin University, Tianjin, 300072, P.R. China |
| Abstract: | We present an investigation into the transmission loss and dispersion of terahertz waves in plastic photonic band-gap fibers having a cladding with a finite number of air hole rings. The leakage loss and absorption loss caused by background material are analyzed by a full-vectorial two-dimensional finite difference frequency domain method and the lowest power transmission loss of 6.126 dB/m at 1.75 THz is realized. Numerical results show that a larger diameter-to-pitch ratio is suitable for lower transmission loss and lower group-velocity dispersion in plastic terahertz photonic band-gap fibers. PACS 41.20.Jb; 41.20.Cv; 42.81.Dp |
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