中国激光, 2004, 31 (3): 313, 网络出版: 2006-06-12
一种降低列阵波导光栅相邻信道串扰的方法
A Way of Adjacent Crosstalk Reduction for AWGs
摘要
提出并研究了一种降低阵列波导光栅(AWG)相邻信道之间串扰的新方法.该方法利用AWG的衍射特性,通过调节AWG的自由光谱范围(FSR)和阵列波导数目来降低AWG相邻信道之间的串扰.通过光束传播方法(BPM)的模拟显示,该方法能将相邻信道之间的串扰降低约5.7 dB.
Abstract
The arrayed waveguide grating (AWG) has greatly prospective in optical communication as a wavelength filter. Crosstalk is one of the most important factors which block the wide use of AWGs. In order to reduce the crosstalk of an AWG, a new method was proposed and studied in this paper. In this method, the output minimum of a channel is located at the center of the waveguides of other channels and there is no sidelobes of the channel in the waveguides of other channels in the mean time by adjusting the free spectrum range (FSR) of AWG, foca length of Rowland circle and the number of the waveguide array. Thus the crosstalk of an AWG, pecially the adjacent crosstalk can be reduced greatly. Numerical approaching of 1×16 AWGs with different FSR by beam propagation method (BPM) shows the adjacent crosstalk can be reduced about 5.7 dB by this method.
朱大庆. 一种降低列阵波导光栅相邻信道串扰的方法[J]. 中国激光, 2004, 31(3): 313. 朱大庆. A Way of Adjacent Crosstalk Reduction for AWGs[J]. Chinese Journal of Lasers, 2004, 31(3): 313.