A method of designing photonic crystal grating slow-wave circuit for Ribbon–Beam microwave travelling wave amplifiers
A method of designing photonic crystal grating slow-wave circuit for Ribbon–Beam microwave travelling wave amplifiers
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DOI：
10.1088/1009-1963/16/9/040
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发表时间：
2007-09
期刊：
影响因子：
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通讯作者：
殷海荣;宫玉彬;魏彦玉;巩华荣;岳玲娜;路志刚;黄民智;王文祥
中科院分区：
文献类型：
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作者：
殷海荣;宫玉彬;魏彦玉;巩华荣;岳玲娜;路志刚;黄民智;王文祥
通过计算二维光子晶体的能带结构和等效波导光栅的本征频率，建立了一种二维光子晶体圆柱点在一个截面平面上的光子晶体光栅慢波电路的设计方法。为了计算能带结构，在一种特殊的偏振模式下，推导了光子晶体光栅慢波电路系统中光子晶体的本征值方程。通过两个算例说明了该方法的有效性。利用同一电路的散射参数对设计结果进行了验证。结果表明，如果金属栅不延伸到光子晶体中，就不存在光子带隙，没有金属栅伸入光子晶体的电路设计不如有金属栅伸入光子晶体的电路设计灵活。
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.