Influence of electrical parasitics and drive impedance on the laser modulation response

被引：3

作者：

Akram, MN ^{[1
]}

Schatz, R ^{[1
]}

Kjebon, O ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Microelect & Informat Technol Photon & Micro, S-16440 Kista, Sweden

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2004年 / 16卷 / 01期

关键词：

laser dynamics; laser modeling; rate equations;

D O I：

10.1109/LPT.2003.819404

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, we analyze the effects of electrical parasitics and drive impedance on the laser modulation response. It is found that for lasers with small active-region volume, e.g., vertical-cavity surface-emitting lasers, the finite drive impedance and/or the laser parasitic capacitance can significantly enhance the damping of the laser resonance peak at low bias. This is due to the voltage fluctuations across the laser diode active layer during modulation. It is also shown that the real pole of the small-signal response transfer function corresponding to the laser parasitic cutoff frequency is not fixed but decreases with the increased bias level.

引用

页码：21 / 23

页数：3

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