Study of picosecond optical switch controlled by optical light using graphene-loaded optical waveguides

利用石墨烯光波导控制皮秒光开关的研究

• 批准号: 23656243
• 负责人: GOTO Nobuo
• 金额: $ 2.25万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656243/
• 关键词: 光スイッチ; 非線形光学効果; グラフェン; 可飽和吸収; 光集積回路

This project aims to realize a high-speed all-optical switch by efficient control with graphene-loaded waveguides in the optical communication band. The proposed switch is based on our previously proposed all-optical wavelength-selective switch controlled by Raman amplification. Optical saturable absorption in graphene can be used to control the optical signal amplitude. First, we experimentally measured optical power-dependent insertion-loss in a graphene-loaded waveguide and its dependence on optical polarization by using a femtosecond laser source. The measured result shows that the obtained 10-dB change of insertion loss can be enough large for applying to the proposed switch. Next, we theoretically analyzed optical switching controlled by saturable absorption accompanied by refractive-index change. We found that the switching efficiency can be improved by considering the accompanied refractive-index change.

本项目的目标是在光通信频段通过石墨烯加载光波导的有效控制来实现高速全光开关。所提出的开关是基于我们先前提出的拉曼放大控制的全光波长选择开关。石墨烯中的光饱和吸收可以用来控制光信号的幅度。首先，我们利用飞秒激光光源实验测量了石墨烯加载光波导中光功率依赖的插入损耗及其与光偏振的关系。测试结果表明，该开关的插入损耗变化可达10d B，可应用于该开关。其次，从理论上分析了可饱和吸收伴随折射率变化控制的光开关。我们发现，通过考虑伴随的折射率变化可以提高开关效率。

项目成果

Saturable Absorption in Multiple Sheets of Monolayer Graphene for Optical Switching

用于光开关的多片单层石墨烯的饱和吸收

• 发表时间: 2013
• 作者: M. Takahashi;W. Ueda;N. Goto;and S. Yanagiya
• 通讯作者: and S. Yanagiya

Waveguide-Type All Optical Switch Using Saturable Absorption of Graphene

利用石墨烯可饱和吸收的波导型全光开关

• 发表时间: 2012
• 作者: M. Oya;H. Kishikawa;N. Goto;and S. Yanagiya
• 通讯作者: and S. Yanagiya

全光スイッチのための単層グラフェン垂直挿入型および装荷型光導波路における可飽和吸収特性の検討

全光开关单层石墨烯垂直插入加载光波导的饱和吸收特性研究

• 发表时间: 2014
• 作者: 高橋みさき;上田和生子;後藤信夫;柳谷伸一郎
• 通讯作者: 柳谷伸一郎

Saturable Absorption in Vertically Inserted and Overlaid Monolayer-Graphene in Optical Waveguide for All-Optical Switching

用于全光开关的光波导中垂直插入和覆盖的单层石墨烯的饱和吸收

• 发表时间: 2013
• 作者: M. Takahashi;W. Ueda;N. Goto;and S. Yanagiya
• 通讯作者: and S. Yanagiya

2 段接続MZI におけるグラフェンによる屈折率変化を伴った可飽和吸収を用いた全光スイッチの検討

两级连接MZI中石墨烯引起的可饱和吸收和折射率变化的全光开关研究

• 发表时间: 2014
• 作者: 高橋みさき;岸川博紀;後藤信夫;柳谷伸一郎
• 通讯作者: 柳谷伸一郎