Limits to modulation rates of electroabsorption modulators

被引：6
作者：
Forsberg, E [1 ]
Hessmo, B [1 ]
Thylén, L [1 ]
机构：
[1] Royal Inst Technol, Lab Opt Photon & Quantum Elect, Dept Microelect & Informat Technol, SE-16440 Kista, Sweden
来源：
IEEE JOURNAL OF QUANTUM ELECTRONICS | 2004年 / 40卷 / 04期
关键词：
adiabatic approximation; electroabsorption; intersubband transitions; optical modulation; two-level system; UHF modulation;
D O I：
10.1109/JQE.2004.825209
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：
We analyze the speed limitations of optical electroabsorption modulators. We argue that modulation rate limits are closely related to quantum mechanical adiabaticity. By analyzing the breakdown of the adiabatic approximation, analytical expressions for modulation limits are found. These expressions are numerically validated. Furthermore, we discuss the constraints on the allowable modulation rate set by losses from the quantum well and transition linewidth.
引用
收藏
页码：400 / 405
页数：6
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