A terabit-per-second all-optical four-bit digital-to-analog converter using quantum dot semiconductor optical amplifiers

被引：0
|
作者：
Kousik Mukherjee
机构：
[1] Banwarilal Bhalotia College,Physics Department
[2] Kazi Nazrul University,Centre of Organic Spintronics and Optoelectronics Devices
来源：
Journal of Computational Electronics | 2021年 / 20卷
关键词：
Quantum dot SOA; Digital-to-analog converter; Resolution; Linearity; Absolute error; ASE noise;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An all-optical digital-to-analog converter (DAC) using quantum dot semiconductor optical amplifiers (QDSOAs) is proposed and analyzed. The device operates at low optical power (~ 0.5 mW) at a speed of 1 Tbps. The resolution of the DAC is four bits, and the corresponding step size is 1.068 mW (compared with the ideal value of 1 mW). The dynamic range is found to be 11.47 dB (versus the ideal value of 11.76 dB). The average absolute error for all the states of the proposed optical DAC is 0.53%, with a maximum error of 1.85%, being the first time that such performance has been achieved to the best of the authors’ knowledge. It is shown that the amplified spontaneous emission (ASE) noise has no significant effect on the performance of the DAC.
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页码：1270 / 1276
页数：6
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