中国激光, 2010, 37 (2): 454, 网络出版: 2010-02-03
新型阵列波导光栅的分析与优化
Analysis and Optimum of a Novel Arrayed-Waveguide Grating
傅里叶光学 阵列波导光栅 粗波分复用 非对称 Fourier optics arrayed-waveguide grating coarse wavelength division multiplexing asymmetric
摘要
对一种新型结构的阵列波导光栅(AWG)进行分析,该阵列波导光栅具有非弯曲的阵列波导,使用两个渐变的折射率平板波导(GISLAB)分别作为阵列波导光栅的输入与输出。该器件在制备粗波分复用器件(CWDM)时可有效减小器件尺寸。利用傅里叶光学和波动光学理论建立数学模型,设计了非对称结构的AWG,其背景噪声比对称结构的AWG降低了20 dB,并可提高频谱宽度。利用反射镜和阵列波导光栅的路由特性设计了反射式阵列波导光栅,进一步减小了器件的尺寸。
Abstract
A novel arrayed-waveguide grating (AWG) based on unbent waveguides is analyzed. The arrayed waveguides are replaced by unbent waveguides and two graded-index planar waveguides (GISLAB) are used as input and output planar waveguides,respectively. This design can decrease the size of the coarse wavelength division multiplexing (CWDM) effectively. A mathematical model of the AWG is established based on the theory of Fourier optics and wave optics,with reasonable parameters considering every factor. The novel arrayed waveguide grating with asymmetric focal lengths of GISLABs is discussed,whose background noise is degraded by 20 dB with respect to the symmetrical structure,and which will widen spectral width. The method of reducing the size further with a reflector and the property of the routing is designed.
王有斌, 黄旭光. 新型阵列波导光栅的分析与优化[J]. 中国激光, 2010, 37(2): 454. Wang Youbin, Huang Xuguang. Analysis and Optimum of a Novel Arrayed-Waveguide Grating[J]. Chinese Journal of Lasers, 2010, 37(2): 454.