光通信研究, 2016 (4): 31, 网络出版: 2016-08-29  

基于氮化铝的1 310 nm波段可调DFB激光器的设计

Design and Analysis of the Wavelength-Tunable DFB Laser Based on AlN in 1 310 nm-Band
作者单位
南京邮电大学 光电工程学院,南京210046
摘要
依据严格耦合波理论和介质平板波导理论,基于MEMS(微机电系统)技术,利用周期可调谐的布拉格光栅设计了一种基于氮化铝的波长可调DFB-LD(分布反馈激光器)。采用梳齿状驱动器驱动光栅动态调节,并利用有限元软件COMSOL对其在1 310 nm波段进行模拟仿真。对激光器电场模式图进行分析,确定了DFB-LD的光栅结构参数。分析表明,激光器输出波长与光栅周期呈线性关系,且一个光栅周期对应多个不同的光栅高度值。在小于模式截止光栅高度的情况下呈20 nm周期性分布。依据光栅周期和激射波长的关系,提出了制作1 290~1 330 nm波段可调激光器的可能性。
Abstract
Based on the rigorous coupled-wave theory and medium slab waveguide theory, an AlN wavelength tunable distributed feedback laser is designed by Periodic tunable Bragg grating. The adjustable grating is actuated by comb-drive actuator according to the Micro-Electromechanical (MEMS) technology system and simulated by COMSOL software in 1 310 nm band. The parameters of the DFB laser grating structure are evaluated by analyzing the distribution of a two-dimensional electric mode. Also, the simulation results show that the lasing wavelength and grating period have similar linear relationships, which is consistent with the theoretical analysis. Moreover, one grating period corresponds to a number of different grating heights, and it demonstrates periodic distribution in a 20 nm range. Furthermore, according to the relationship between lasing wavelength and grating period, the possibility of making 1 290~1 330 nm-band tunable lasers is presented in this paper.

陈凯文, 胡芳仁, 王斐. 基于氮化铝的1 310 nm波段可调DFB激光器的设计[J]. 光通信研究, 2016, 42(4): 31. CHEN Kai-wen, HU Fang-ren, WANG Fei. Design and Analysis of the Wavelength-Tunable DFB Laser Based on AlN in 1 310 nm-Band[J]. Study On Optical Communications, 2016, 42(4): 31.

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