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1. 宽带光纤传输与通信教育部重点实验室 电子科技大学光电信息学院,四川 成都,610054
2. 西华师范大学 物理与电子学院,四川 南充,637002
收稿:2008-11-10,
修回:1900-1-2,
网络出版:2009-06-30,
纸质出版:2009-06-30
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张谦述, 廖进昆, 陆荣国, 等. 长周期波导光栅窄带光滤波器特性的模拟[J]. 发光学报, 2009,30(3):356-362.
ZHANG Qian-shu, LIAO Jin-kun, LU Rong-guo, et al. Property Simulation of a Narrow Band-passed Optical Filter Based on Long-period Waveguide Grating[J]. Chinese Journal of Luminescence, 2009, 30(3): 356-362.
利用两路平行的刻有长周期光栅(LPWG)波导间耦合的理论模型
研究了LPWG波导光滤波器
利用弱耦合实现高耦合效率和窄带滤波的方法
设计了一个窄带光滤波器。仿真结果表明
在1 530~1 560 nm范围
能实现单一的带通、带阻互补滤波输出
3 dB带宽为1 nm
耦合效率高达98%。
Using the model describing the coupling operation of two paralle waveguides with long-period waveguide grating (LPWG) thereon
the methods decreasing coupling coefficient of coupled modes to realize narrow band-passed optical filtering and high coupling efficiency were investigated in this paper. Meantime
a narrow band-passed optical filter was designed with these methods. The simulation results indicated that the filter could be realized with a single band-passed result and band-rejected result simultaneously in the wavelength range of 1 530 nm to 1 560 nm. The 3 dB band-width is only 1 nm.
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