发光学报, 2009, 30 (3): 356, 网络出版: 2009-12-30
长周期波导光栅窄带光滤波器特性的模拟
Property Simulation of a Narrow Band-passed Optical Filter Based on Long-period Waveguide Grating
集成光学 光电子器件 光滤波器 长周期波导光栅 耦合模理论 仿真 integrated optics electro-optical devices optical filter long-period waveguide grating coupled-mode theory simulation.
摘要
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%。
Abstract
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.
张谦述, 廖进昆, 陆荣国, 唐雄贵, 李和平, 刘永, 刘永智. 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. ZHANG Qian-shu, LIAO Jin-kun, LU Rong-guo, TANG Xiong-gui, LI He-ping, LIU Yong, LIU Yong-zhi. Property Simulation of a Narrow Band-passed Optical Filter Based on Long-period Waveguide Grating[J]. Chinese Journal of Luminescence, 2009, 30(3): 356.