All-optical logic gates based on two-photon absorption in semiconductor optical amplifiers

被引：19
|
作者：
Ma, Shaozhen [1 ]
Chen, Zhe [1 ]
Dutta, Niloy K. [1 ]
机构：
[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
来源：
OPTICS COMMUNICATIONS | 2009年 / 282卷 / 23期
关键词：
Semiconductor optical amplifier; Two-photon absorption; Optical logic; MACH-ZEHNDER INTERFEROMETER; SHIFT REGISTERS; INDEX DYNAMICS; XOR;
D O I：
10.1016/j.optcom.2009.08.039
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
When the two-photon absorption of a high intensity pump beam takes place in a semiconductor optical amplifier there is an associated fast phase change of a weak probe signal. A scheme to realize fast all-optical XOR logic function using two-photon absorption induced phase change has been analyzed. Rate equations for semiconductor optical amplifiers, for input data signals with high intensity, configured in the form of a Mach-Zehnder interferometer has been solved. The input intensities are high enough so that the two-photon induced phase change is larger than the regular gain induced phase change. The model shows that both XOR operation and pseudo-random binary sequence generation at 250 Gb/s with good signal to noise ratio is feasible. Published by Elsevier B.V.
引用
收藏
页码：4508 / 4512
页数：5
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