节点文献
大角度蚀刻衍射光栅的模拟
Simulation for an Etched Diffraction Grating(EDG) of Wide Angle
【摘要】 研究了平面波导密集波分复用器件中很有发展潜力的蚀刻衍射光栅 (EDG) 小角度范围光栅的模拟通常采用高斯近似的输入光场 ,由于近轴的高斯光场接近实际光场 ,所以模拟结果很准确 但这种方法应用于大角度范围的光栅则有偏差 本文提出了大角度蚀刻衍射光栅的模拟方法 ,分析了这种偏差并给出了模拟结果 事实上这种方法也适合于实际任意输入光场的模拟
【Abstract】 As a key device in a DWDM system, an Etching Diffraction Grating (EDG) is a potential planar waveguide wavelength demultiplexer. For an EDG of narrow angle it is quite accurate to use a Gaussian field as the incident field in the simulation. However, the error increases when it′s applied to an EDG of wide angle. The simulation method based on a diffraction theory for an EDG of wide angle is presented. The errors are analyzed and the simulation results are given. The simulation method is also suitable for arbitrary incident field.
【关键词】 蚀刻衍射光栅;
平面波导;
密集波分复用;
Rowland圆;
解复用器;
【Key words】 Etched diffraction grating; Planar waveguide; Gauusian field; Diffraction theory; Phase error; Rowland circle; Dense wavelength division multiplexing;
【Key words】 Etched diffraction grating; Planar waveguide; Gauusian field; Diffraction theory; Phase error; Rowland circle; Dense wavelength division multiplexing;
【基金】 浙江省科技计划重大项目 (项目号 0 0 110 10 2 7);高等学校重点实验室访问学者基金项目
- 【文献出处】 光子学报 ,Acta Photonica Sinica , 编辑部邮箱 ,2003年05期
- 【分类号】TN253
- 【被引频次】2
- 【下载频次】111