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Woodpile结构中锯齿波导的研究
引用本文:李天宇,冯志芳.Woodpile结构中锯齿波导的研究[J].北京化工大学学报(自然科学版),2019,46(4):110-115.
作者姓名:李天宇  冯志芳
作者单位:北京化工大学理学院,北京,100029;北京化工大学理学院,北京,100029
基金项目:教育部留学回国人员科研启动基金(LXHG2014001);国家自然科学基金(61775244);北京化工大学学科建设基金(XK1702)
摘    要:采用时域有限差分方法(FDTD),详细设计、模拟和分析了woodpile结构中锯齿波导的传输特性。模拟结果表明:通过改变波导中相邻锯齿的长度,可以有效控制波导的导带范围;且利用锯齿波导设计灵活的特性,可以设计沿任意方向传输的波导结构。利用导带范围受相邻锯齿长度调控这一特点,设计、模拟并分析了由锯齿型波导形成的Y型波分复用器,两输出通道中锯齿长度分别取0.3a-0.5a和0.3a-0.8a,模拟结果表明两输出通道导带范围完全不同,充分说明在器件设计中可以引入锯齿型波导,通过调节锯齿长度实现频率选择的特性。

关 键 词:波导  时域有限差分方法(FDTD)  波分复用器
收稿时间:2018-10-18

Investigation of serration waveguides in a woodpile structure
LI TianYu,FENG ZhiFang.Investigation of serration waveguides in a woodpile structure[J].Journal of Beijing University of Chemical Technology,2019,46(4):110-115.
Authors:LI TianYu  FENG ZhiFang
Institution:Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, China
Abstract:The propagation characteristics of serration waveguides in a woodpile structure have been simulated and analyzed in detail by the finite-difference time-domain method. The results show that the transmission spectra can be adjusted effectively by altering the lengths of the adjacent serration in the waveguide. Furthermore, the waveguide structure can be tailored because of the flexibility of the serration waveguide. According to the characteristics of the serration waveguides, a Y-shaped wavelength division multiplexer including different serration values has been designed, simulated and analyzed. The results show that the frequency selection characteristics for the different output ports can be obtained.
Keywords:waveguide                                                                                                                        finite-difference time-domain method(FDTD)                                                                                                                        wavelength division multiplexer
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