Novel optical devices for photonic networks using nonlinearity in carbon nanotubes

利用碳纳米管非线性的新型光子网络光学器件

基本信息

批准号：
16360166
负责人：
YAMASHITA Shinji
金额：
$ 9.66万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360166/
关键词：
Carbon nanotube Fiber laser Mode locking Saturable absorption Nonliear effects Optical switch Short pulse generation Evanescent wave 自己位相変調非線形偏波回転平面導波路 Dシェイプ光ファイバ

项目摘要

This project aims at realizing novel optical devices based on carbon nanotubes (CNT). We mainly concentrated on three topics, mode-locked fiber lasers using CNT thin films, CNT waveguides and fibers using evanescent wave coupling, and CNT based optical switches.(1)Mode-locked fiber lasers using CNT thin films : We demonstrated that CNT thin film can mode-lock the fiber laser at wide wavelength range from 1 to 1.6 microns. We also demonstrated high-repetition-rate (〜10GHz) mode-locked fiber laser by reducing the cavity size using the CNT thin film.(2)CNT waveguides and fibers using evanescent wave coupling : We prepared a CNT coated over-clad-less planar waveguide, and observed saturable absorption through evanescent wave coupling between the guided mode and the CNT. We successfully applied it for mode-locking the fiber laser. Based on the same principle, we fabricated fiber-type CNT devices using side-polished D-shaped fibers and tapered fibers, and also applied it as the mode locker.(3)CNT-based optical switches : We studied the possibility of optical switching using CNTs. By using the CNT coated planar waveguide in a nonlinear loop mirror (NOLM) configuration, we obtained the change of coupling ratio by about 20%. We also acheived the optical switching based on nonlinear polarization rotation (NPL) in a 5cm-long CNT coated D-shaped fiber with the switching power as low as 50mW and the extinction ratio as high as >20dB. It suggests that the nonlinear coefficient of the CNT is as high as 10^6 W^<-1>m^<-1>.

该项目旨在实现基于碳纳米管（CNT）的新型光学设备。我们主要使用CNT薄膜，CNT波导和纤维使用均匀波耦合以及基于CNT的光学开关来集中于三个主题，即模式锁定的纤维激光器。（1）使用CNT薄膜模式锁定的纤维激光器：我们证明，CNNT薄膜可以在宽阔的范围内使用1.6 sick Nove laser lase firmock lock fiber fiber lase fiber fiber fiber laser laseer范围。 We Also demonstrated high-repetition-rate (~10GHz) mode-locked fiber laser by reducing the cavity size using the CNT thin film.(2)CNT waveguides and fibers using evenescent wave coupling: We prepared a CNT coated over-clad-less planar waveguide, and observed saturable abuserption through evenescent wave coupling between the guided mode and the CNT.我们成功地将其应用于纤维激光器模式。基于相同的原理，我们使用侧面抛光的D形纤维和锥形纤维制造了光纤型CNT设备，并将其应用于模式储物柜。（3）基于CNT的光学开关：我们研究了使用CNTS进行光学开关的可能性。通过在非线性环形镜（NOLM）配置中使用CNT涂层的平面波导，我们获得了耦合比的变化约20％。我们还以5厘米长的CNT CNT涂层的D形光纤以低至50MW的开关功率为基于非线性偏振旋转（NPL）的光学开关，并且扩展比高达20dB。这表明CNT的非线性系数高达10^6 W^<-1> m^<-1>。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Mode-Locked Fiber Lasers Using Adjustable Saturable Absorption in Vertically Aligned Carbon Nanotubes

DOI：
10.1143/jjap.45.l17
发表时间：
2005
期刊：
Japanese Journal of Applied Physics
影响因子：
1.5
作者：
S. Yamashita;Y. Inoue;S. Maruyama;Y. Murakami;H. Yaguchi;Tomoharu Kotake;S. Set
通讯作者：
S. Yamashita;Y. Inoue;S. Maruyama;Y. Murakami;H. Yaguchi;Tomoharu Kotake;S. Set

超高速カーボンナノチューブ可飽和吸収素子と受動モード同期光ファイバレーザへの応用(招待論文)

超快碳纳米管可饱和吸收器件及其在被动锁模光纤激光器中的应用（特邀论文）