Minimization of Damping in the Electrooptic Frequency Response of High-Speed Zn-Diffusion Single-Mode Vertical-Cavity Surface-Emitting Lasers
Minimization of Damping in the Electrooptic Frequency Response of High-Speed Zn-Diffusion Single-Mode Vertical-Cavity Surface-Emitting Lasers
复制标题
高速锌扩散单模垂直腔面发射激光器电光频率响应中的阻尼最小化
DOI：
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复制
发表时间：
2007
影响因子：
2.6
通讯作者：
Ying
中科院分区：
文献类型：
--
作者：
Jin;L.;C. Chen;Y. Wu;Shi;Ying
我们利用锌扩散技术制作了单模高速850 nm垂直腔面发射激光器。通过这种技术，我们能够最大限度地减少热效应，而不会大大缩小氧化物限制孔径的直径。演示的设备有一个9妈妈的有效直径，我们可以达到8 GHz的带宽，一个小的微分电阻（~47 Ω），和3 mW的最大输出功率。在整个偏置电流范围内，动态工作时都能保持单模特性。动态测量结果表明，这种单模器件的阻尼限制的带宽，我们的多模控制可以消除没有锌扩散孔。由于阻尼的最小化，也获得了更大的固有带宽（32对21 GHz）。较窄的发散角（8度对20度）意味着当与标准多模光纤一起使用时，该器件表现出比对照样品更大的对准公差和低得多的耦合损耗（9 dB）。
We utilize the Zn-diffusion technique to fabricate a single-mode high-speed 850-nm vertical-cavity surface-emitting laser. With this technique, we are able to minimize the thermal effect without greatly scaling down the diameter of the oxide-confined aperture. The demonstrated device has a 9-mum active diameter with which we can attain a bandwidth of 8 GHz, a small differential resistance (~47 Omega), and a maximum output power of 3 mW. The single-mode characteristics can be sustained under dynamic operation for the whole bias current range. The dynamic measurement results indicate that with this single-mode device the damping-limited bandwidth of our multimode control can be eliminated without a Zn-diffusion aperture. A larger intrinsic bandwidth (32 versus 21 GHz) is also obtained due to the minimization of damping. The narrower divergence angle (8deg versus 20deg) means that the device exhibits a larger alignment tolerance and much lower coupling loss (9 dB) when used with the standard multimode fiber than those of the control sample.