Information-theoretic criterion for the performance of single-photon avalanche photodiodes

被引:2
|
作者
Ramirez, DA
Hayat, MM
Torres, SN
Saleh, BEA
Teich, MC
机构
[1] Univ Concepcion, Dept Elect Engn, Concepcion, Chile
[2] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA
[3] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA
基金
美国国家科学基金会;
关键词
avalanche photodiodes (APDs); channel capacity; dead space; detection efficiency; Geiger mode; heterostructures; impact ionization; InAlAs; InP; single-photon detection;
D O I
10.1109/LPT.2005.856406
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 channel-capacity metric is introduced for assessing the performance of single-photon avalanche photodiodes (SPADs) when used as detectors in laser communication systems. This metric is employed to theoretically optimize, with respect to the device structure and operating voltage, the performance of SPADs with simple InP or In0.52Al0.48As-InP heterojunction multiplication regions. As the multiplication-region width increases, an increase is predicted in both the peak and the full-width at half-maximum of the channel capacity curve versus the normalized excess voltage. Calculations also show the existence of an optimal In0.52Al0.48As-InP heterojunction multiplication region that maximizes the peak channel capacity beyond that of InP.
引用
收藏
页码:2164 / 2166
页数:3
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