A method of designing photonic crystal grating slow-wave circuit for Ribbon--Beam microwave travelling wave amplifiers
Yin Hai-Rong(殷海荣)†, Gong Yu-Bin(宫玉彬), Wei Yan-Yu(魏彦玉), Gong Hua-Rong(巩华荣), Yue Ling-Na(岳玲娜), Lu Zhi-Gang(路志刚), Huang Min-Zhi(黄民智), and Wang Wen-Xiang(王文祥)
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610005, China
Abstract A method of designing a photonic crystal grating slow-wave circuit in which the cylinders of the 2D photonic crystals dot on a cross-sectional plane is established by calculating the band structures of the 2D photonic crystals, and the eigenfrequency of the equivalent waveguide grating. For calculating the band structures, the eigenvalue equations of the photonic crystals in the system of photonic crystal grating slow-wave circuit are derived in a special polarization mode. Two examples are taken to show the method. The design result is validated by the scattering parameters of the same circuit. The result indicates that there exists no photonic band gap if the metal gratings do not extend into the photonic crystals; the design of the circuit without the metal gratings extending into the photonic crystals is less flexible than that with the metal gratings extending into the photonic crystals.
Received: 05 November 2006
Revised: 09 March 2007
Accepted manuscript online:
Fund: Project supported by the
National Natural Science Foundation of China (Grant Nos~60532010
and 60601005).
Cite this article:
Yin Hai-Rong(殷海荣), Gong Yu-Bin(宫玉彬), Wei Yan-Yu(魏彦玉), Gong Hua-Rong(巩华荣), Yue Ling-Na(岳玲娜), Lu Zhi-Gang(路志刚), Huang Min-Zhi(黄民智), and Wang Wen-Xiang(王文祥) A method of designing photonic crystal grating slow-wave circuit for Ribbon--Beam microwave travelling wave amplifiers 2007 Chinese Physics 16 2737
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