基于FBG阵列的任意波形产生装置  

FBG array-based optical arbitrary waveform generation

作　　者：梁久灿 张爱玲[1,2,3] 

机构地区：[1]天津理工大学计算机与通信工程学院,天津300384 [2]天津理工大学天津市薄膜电子与通信器件重点实验室,天津300384 [3]天津理工大学教育部通信器件与技术工程研究中心,天津300384

出　　处：《光通信研究》2015年第4期46-48,共3页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61377075);教育部新世纪优秀人才支持计划(NCET-07-0611)

摘　　要：提出了一种基于单阵列FBG(光纤布拉格光栅)的任意波形产生装置。该装置包括光学频率梳产生部分和脉冲整形部分。在光学频率梳产生部分,利用自相位调制效应压缩拍频光得到光学频率梳;脉冲整形部分包括FBG阵列、偏振控制器、光纤拉伸器和偏振片。不同波长的谱线经过不同数量的偏振控制器后其偏振态各不相同,经过偏振片后各条谱线的幅度会发生不同程度的衰减。相位控制器通过改变光纤的长度改变谱线的相位。通过该结构进行实验并仿真,得到了频率为125GHz的类似三角波和高斯波的波形。In this paper,a single array FBG-based Optical Arbitrary Waveform Generation (OAWG)system is proposed,which consists of two parts:optical frequency combs generation and pulse shaping.The former is obtained by compressing a dual wavelength beat light using the Self-Phase Modulation (SPM)effect and the latter composed of FBG array,polarization con-trollers (PC),Fiber Stretchers (FS)and a polarizer.The polarization states of the spectral lines at different wavelengths are different after passing through different number of PC and the amplitude of each line attenuates to a different extent after pass-ing through the polarizer.The phase controllers adjust the phase of each spectral line by manipulating the length of the fiber. Using this system in experiments and simulation,we obtain waveforms with a frequency of 125 GHz similar to triangular and Gaussian waves.

关 键 词：光纤布拉格光栅 偏振控制器 任意波形 

分 类 号：TN253[电子电信—物理电子学]