Low Loss Plastic Terahertz Photonic Band-Gap Fibres
GENG You-Fu, TAN Xiao-Ling, ZHONG Kai, WANG Peng, YAO Jian-Quan
College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072Key Laboratory of Optoelectric Information Science and Technology (Ministry of Education) Tianjin University, Tianjin 300072
Low Loss Plastic Terahertz Photonic Band-Gap Fibres
GENG You-Fu, TAN Xiao-Ling, ZHONG Kai, WANG Peng, YAO Jian-Quan
College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072Key Laboratory of Optoelectric Information Science and Technology (Ministry of Education) Tianjin University, Tianjin 300072
We report a numerical investigation on terahertz wave propagation in plastic photonic band-gap fibres which are characterized by a 19-unit-cell air core and hexagonal air holes with rounded corners in cladding. Using the finite element method, the leakage loss and absorption loss are calculated and the transmission properties are analysed. The lowest loss of 0.268dB/m is obtained. Numerical results show that the fibres could liberate the constraints of background materials beyond the transparency region in terahertz wave band, and efficiently minimize the effect of absorption by background materials, which present great advantage of plastic photonic band-gap fibres in long distance terahertz delivery.
We report a numerical investigation on terahertz wave propagation in plastic photonic band-gap fibres which are characterized by a 19-unit-cell air core and hexagonal air holes with rounded corners in cladding. Using the finite element method, the leakage loss and absorption loss are calculated and the transmission properties are analysed. The lowest loss of 0.268dB/m is obtained. Numerical results show that the fibres could liberate the constraints of background materials beyond the transparency region in terahertz wave band, and efficiently minimize the effect of absorption by background materials, which present great advantage of plastic photonic band-gap fibres in long distance terahertz delivery.
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2008, Vol. 25 
