Numerical Study on Bragg Fibers for Infrared Applications

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• 作者：Changzhi Li ; Wei Zhang ; Yidong Huang and Jiangde Peng
• 关键词：Bragg fiber ; photonic bandgap ; mode analysis ; leakage loss ; material loss ; plane wave expansion method (PWM) ; transfer matrix method (TMM)
• 刊名：International Journal of Infrared and Millimeter Waves
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：26
• 期：6
• 页码：893-904
• 全文大小：4.08 MB

文摘

The photonic band structure, waveguiding mechanism, mode field distribution, leakage loss, and material loss of Bragg fiber are studied by the full vectorial plane wave expansion method and the transfer matrix method. Systematical study has shown the distinctive properties of Bragg fiber and the similarity between Bragg fiber and hollow metallic waveguide, demonstrating the feasibility of Bragg fiber to work in a low loss, single mode manner. Furthermore, a comparison between the band structures calculated by plane wave expansion method and by transfer matrix method is conducted to show the practicability to treat Bragg fibers electromagnetic behavior in a Bloch theorem approach, verifying the photonic bandgap concept for the analysis of Bragg fiber.