Optical soliton communication-Application to the long distance and high data-bit communication-

光孤子通信-远距离、高数据比特通信的应用-

• 批准号: 07044146
• 负责人: HASEGAWA Akira
• 金额: $ 4.86万
• 依托单位: Osaka university
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044146/
• 关键词: soliton; optical communication; nonlinear optics; 非線形光学; 光ソリトン通信; ソリトン制御

We obtained theoretically a new soliton (the quast-soliton) having a much better transmission properties than an ideal soliton. The quasi-soliton can be produced by means of a proper dispersion mapping. The quasi-soliton allows much smaller pulse spacings than an soliton thus it can increase bitrate per a wavelength channel. In addition its stationary pulse shape is much more suited for OTDM networks than the so called dispersion managed solitons.Properties of dispersion managed soliton in a fiber having periodic variation of dispersion were theoretically studied in its application for wavelength multiplexing as a function of the difference of the dispersion, DELTAD.The frequency shift was found to decrease and disappear periodically as a function of DELTAD.Experiments of transmission of 2x10Gbps WDM solitons were performed with sliding filter control and confirmed the transmission property depends on the wavelength characteristics of EDFA.With collaboration of Prof.Andreckson of Chalmer's University, it was demonstrated that the decrease of S/N ratio of the light source deteriorate the transmission property of a soliton. We succeeded transmission of 10Gbps solitons over 16,000km with bit error rate of less than 10^<-9>. In addition, we could transmit 10Gbps solitons having amplifier spacing of 80 kms over a distance of 2,000km by means of comb type dispersion management.With collaboration of Dr. Chernikov at lmperial College, we could succeed generation of near Fourier transform limited soliton pulse having autocorrelation width of 3.7ps and repetition rate of 86.8Ghz with the use of the induced modulational instability, an invention of Prof.Hasegawa.

我们从理论上得到了一种新的孤子（准孤子），它比理想孤子具有更好的传输特性。准孤子可以通过适当的色散映射产生。准孤子允许比孤子小得多的脉冲间隔，因此它可以提高每个波长通道的比特率。此外，它的平稳脉冲形状比所谓的色散管理孤子更适合于OTDM网络。从理论上研究了色散周期性变化光纤中色散管理孤子作为色散差delta函数在波长复用中的应用。频移作为delta的函数周期性地减小和消失。采用滑动滤波器控制进行了2x10Gbps WDM孤子的传输实验，证实了EDFA的传输特性与波长特性有关。与Chalmer's University的andreckson教授合作，证明了光源信噪比的降低会使孤子的传输性能恶化。我们成功传输了10Gbps的孤子，传输距离超过16000公里，误码率小于10^<-9>。此外，通过梳状色散管理，我们可以在2000公里的距离上传输放大器间距为80公里的10Gbps孤子。在帝国理工大学Chernikov博士的合作下，我们利用长谷川教授的一项发明——诱导调制不稳定性，成功地产生了自相关宽度为3.7ps、重复频率为86.8Ghz的近傅立叶变换有限孤子脉冲。

项目成果

S.Kumar, Y.Kodama, A.Hasegawa: "Optimal Dispersion Management Schemes for WDM soliton systems"Electron.Lett.. 33. 459-461 (1997)

S.Kumar、Y.Kodama、A.Hasekawa：“WDM 孤子系统的最佳色散管理方案”Electron.Lett.. 33. 459-461 (1997)

H.Toda, Y.Furukawa, T.Kinoshita, Y.Kodama and A.Hasegawa: "Optical soliton transmission experient in a comp-like dispersion profiled fiber loop"IEEE Photon.Tech.Lett.. 9. 1415-1417 (1997)

H.Toda、Y.Furukawa、T.Kinoshita、Y.Kodama 和 A.Hasekawa：“在类似 comp 的色散分布光纤环路中的光孤子传输体验”IEEE Photon.Tech.Lett.. 9. 1415-1417 (1997)

T.Okamawari, A.Hasegawa, and Y.Kodama: "Analyses of soliton interactions by means of perturbed inverse-scattering transform" Phys.Rev.A. 51. 3203-3220 (1995)

T.Okamawari、A.Hasekawa 和 Y.Kodama：“通过扰动逆散射变换分析孤子相互作用” Phys.Rev.A。

H.Ikeda, M.Matumoto, and A.Hasegawa: "Stabilization of dark-soliton transmisson by means of nonlinear gain" J.Opt.Soc.Am.B. 14. 136-143 (1996)

H.Ikeda、M.Matumoto 和 A.Hasekawa：“通过非线性增益稳定暗孤子传输”J.Opt.Soc.Am.B。

Kumar, A.Hasegawa and Y.Kodama: "Analysis of adiabatic soliton transmisson in fibers with Iumped amplifiers" Optics Letters. 22. 888-894 (1997)

Kumar、A.Hasekawa 和 Y.Kodama：“利用集束放大器分析光纤中的绝热孤立子传输”《光学快报》。