| 徐敬亚,吕东,李梦雪,张雅丽.基于MZI结构和级联SOA的宽相位容限全光异或门[J].光电子激光,2015,26(2):259~264 |
| 基于MZI结构和级联SOA的宽相位容限全光异或门 |
| A broad phase margin all-optical XOR logic gate based on cascaded SOAs in MZI |
| 投稿时间：2014-09-17 |
| DOI： |
| 中文关键词: 全光逻辑异或(XOR)门 半导体光放大器(SOA) 交叉相位调制(XPM) 马赫-增德尔干涉 仪(MZI) |
| 英文关键词:all-optical XOR logic gate semiconductor optical amplifier (SOA) cross-phase modulation (XPM) Mach-Zehnder interferometer (MZI) |
| 基金项目:国家“973”计划(2011CB301705,2012CB315701)和国家自然科学基金(61307031,61090393,61377037)资助项目 (电子科技大学 光电信息学院,电子薄膜与集成器件国家重点实验室,四川 成都 610054) |
|
| 摘要点击次数: 1134 |
| 全文下载次数: 74 |
| 中文摘要: |
| 传统使用半导体光放大器(SOA)中交叉相位调制( XPM)效应构成全光逻辑异或(XOR)门的方案,由 于受到单个SOA中XPM效应自身原理的限制,需要精确的相位控制。本文提出了一种基于马赫 -增德尔干 涉仪(MZI)和级联SOA中XPM效应实现全光逻辑异或门的新方案。本文方案使用对称的MZI结构 ,在两臂 上分别放置两个级联的SOA,通过对时钟光的相位调制,达到对两级输入信号光进行XOR运算 的目的。在 40Gbit/s下的仿真结果表明,本方案易于调节,只需要两束输入信 号光以相反比例分光,即可对其进行异或 逻辑运算,在放宽了分光比取值范围的同时,也降低了对XPM效应中相位控制的要求,实现 了宽相位容 限的全光逻辑XOR门。研究了时钟光功率和输入信号分光比对逻辑运算结果的影响,发 现输入信号分 光比的不同步变化对输出信号质量的影响较为明显。对提高方案速率的方法进行了讨 论。 |
| 英文摘要: |
| Typical schemes that exploit semiconductor optical amplifier cross-phase modula tion (SOA-XPM) to constitute all-optical XOR l ogic gate need to precisely control the phase of the MZI due to the inherent properties of XPM in SOAs.In t his paper,a scheme of all-optical XOR logic gate based on MZI and XPM in cascaded SOAs is proposed.The scheme con sists of a symmetrical SOA-MZI by putting two cascaded SOAs on both arms of the MZI,and the gate can be realized via the configuration and the injection of the clock signal and two input signals.Numer ical simulations at 40Gbit/s demonstrate that the quality of the output is ensured as long as the splitting r atio of the two input signals is reversed.Since the splitting ratio can be varied in a large extent,this scheme provides the advantage of lowering the requirement in precisely controlling the phase when exploiting XPM in SOAs. Thus,all-optical XOR logic gate with broad phase margin is constructed.Finally,we discuss the influence o f clock pulse power and splitting ratio of input signals on logical operation results.It is found that asynchrono us change of input signals′ splitting ratio will relatively affect the quality of output signals.Besides,the methods to enhance processing speed are discussed. |
| 查看全文 下载PDF阅读器 |
| 关闭 |
|
|
|
|
|