基于失谐加载效应的单片集成双截面 DFB 激光器调制带宽增强技术

IF 4.8 4区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Journal of Semiconductors Pub Date : 2023-11-01 DOI:10.1088/1674-4926/44/11/112301

Yunshan Zhang, Yifan Xu, Shijian Guan, Jilin Zheng, Hongming Gu, Lianyan Li, Rulei Xiao, Tao Fang, Hui Zou, Xiangfei Chen

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引用次数: 0

摘要

研究和实验演示了基于失谐加载效应的直接调制双段分布式反馈（TS-DFB）激光器的调制带宽增强。结果表明，TS-DFB 激光器的 3-dB 带宽提高到了 17.6 GHz，啁啾参数降低到了 2.24。与没有失谐加载效应的情况相比，分别提高了 4.6 GHz 和降低了 2.45。通过 5 千米长的光纤传输 10 Gb/s 的非归零（NRZ）信号后，调制眼图仍能实现较大的开口。八通道激光器阵列具有精确的波长间隔。阵列中每个 TS-DFB 激光器的边模抑制比（SMSR）为 49.093 dB，最大波长残差为 0.316 nm。

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Modulation bandwidth enhancement in monolithic integrated two-section DFB lasers based on the detuned loading effect

Modulation bandwidth enhancement in a directly modulated two-section distributed feedback (TS-DFB) laser based on a detuned loading effect is investigated and experimentally demonstrated. The results show that the 3-dB bandwidth of the TS-DFB laser is increased to 17.6 GHz and that chirp parameter can be reduced to 2.24. Compared to the absence of a detuned loading effect, there is a 4.6 GHz increase and a 2.45 reduction, respectively. After transmitting a 10 Gb/s non-return-to-zero (NRZ) signal through a 5-km fiber, the modulation eye diagram still achieves a large opening. Eight-channel laser arrays with precise wavelength spacing are fabricated. Each TS-DFB laser in the array has side mode suppression ratios (SMSR) > 49.093 dB and the maximum wavelength residual < 0.316 nm.

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来源期刊

Journal of Semiconductors PHYSICS, CONDENSED MATTER-

CiteScore

6.70

自引率

9.80%

发文量

119

期刊介绍： Journal of Semiconductors publishes articles that emphasize semiconductor physics, materials, devices, circuits, and related technology.