OPTIMIZATION OF MULTIPLE QUANTUM-WELL STRUCTURES FOR WAVE-GUIDE ELECTROABSORPTION MODULATORS

被引:14
作者
CHIN, MK
YU, PKL
CHANG, WSC
机构
[1] Department of Electrical and Computer Engineering, University of California at San Diego, La Jolla
关键词
D O I
10.1109/3.81379
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
A systematic approach for optimizing the performance of a multiple quantum well electroabsorption waveguide modulator is presented. The primary criterion of the modulator performance for digital and analog applications is taken to be the change of transmission DELTA-T at a given applied electric field. The design variables used to maximize DELTA-T include the device length (L), as well as the quantum well width and composition which determine the electroabsorption (DELTA-alpha) and the residual absorption (alpha-0) at a given photon wavelength. Within the range of DELTA-T that can satisfy the system requirement, the L is then minimized to maximize the bandwidth. The effect of the guided wave index profile and the electrical properties of the p-i-n structure on the bandwidth and the drive voltage requirement is discussed. Calculated results are presented for AlGaAs-GaAs quantum well modulators based upon published data.
引用
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页码:696 / 701
页数:6
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