当前位置: X-MOL 学术J. Lightw. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Design of Four-channel Wavelength-selectable In-series DFB Laser Array with 100-GHz Spacing
Journal of Lightwave Technology ( IF 4.7 ) Pub Date : 2020-04-15 , DOI: 10.1109/jlt.2020.2970788
Zhenxing Sun , Rulei Xiao , Yong Zhao , Gen Lv , Zhirui Su , Yuechun Shi , Xiangfei Chen

A four-channel wavelength-selectable in-series DFB laser array with good single-longitudinal-mode (SLM) property is proposed and theoretically analyzed. To realize good SLM property, a linearly chirped Bragg grating with multiple π phase shifts are implemented in the laser cavity. In addition, two reflector sections with chirped Bragg grating are specially designed for reflection compensation at both ends. In our simulation, the split-step time-domain model with coupled-wave equations and carrier rate equations are used. Based on the simulation results, all the channels work with low threshold currents and the SLM properties are considerably enhanced compared with the conventional in-series laser array. Notably a high precision control of grating phase is required in the practical fabrication due to the ultra-small variation of grating period. Therefore, the reconstruction-equivalent-chirp technique is discussed to provide the fabrication of high-precision grating. In addition, the complex heterogeneous integration or butt-joint technique is not required during the whole fabrication process, which simplifies the fabrication and reduces the cost. The proposed wavelength-selectable in-series laser array is deemed to be applied in the dense wavelength division multiplexing technology, especially when fast wavelength switching is needed, such as in the application of NG-PON2.

中文翻译:

具有 100 GHz 间距的四通道波长可选串联 DFB 激光器阵列的设计

提出并理论分析了一种具有良好单纵模(SLM)特性的四通道波长可选串联DFB激光器阵列。为了实现良好的 SLM 特性,在激光腔中实现了具有多个 π 相移的线性啁啾布拉格光栅。此外,两个带有啁啾布拉格光栅的反射器部分专门设计用于两端的反射补偿。在我们的模拟中,使用带有耦合波方程和载波速率方程的分步时域模型。根据仿真结果,所有通道都在低阈值电流下工作,与传统的串联激光器阵列相比,SLM 特性得到了显着增强。值得注意的是,由于光栅周期的超小变化,在实际制造中需要对光栅相位进行高精度控制。因此,讨论了重建等效线性调频技术以提供高精度光栅的制造。此外,整个制作过程不需要复杂的异构集成或对接技术,简化了制作过程,降低了成本。所提出的波长可选串联激光器阵列被认为适用于密集波分复用技术,特别是在需要快速波长切换时,例如在NG-PON2的应用中。
更新日期:2020-04-15
down
wechat
bug