Frequency synchronization in dence FDM optical networks

FDM光网络中的频率同步

• 批准号: 07555118
• 负责人: KIKUCHI Kazuro
• 金额: $ 5.12万
• 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 (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555118/
• 关键词: Optical conmunications; frequency division multiplexing; wavelength comversion; 周波数安定化; 光波ネットワーク

We studied device and system technologies for future FDM optical networks. Tunable, lascrs, frequency conversion devices, and FDM transmission technologies were focused on, and main results are summarized in the followings.(1) Tunable lasersWe developed two types of frequency tunable laser at 1,5mum region. One is the external ring-cavity semiconductor laser. The mode-hop free operation has been achieved in this laser. The other is the Erbium-doped fiber laser, whose polarization and single mode are stabilized by a specially designed cavity structure.(2) Dense FDM transmission technologiesWe proposed a novel design method of dispersion management for long-distance dense FDM transmission systems. To increase the transmission capacity further, the midway phase conjugation was found to be effective.(3) All optical signal processing for FDM systemsWe developed an intra-cavity four-wave mixing device by using an external ring-cavity semiconductor laser. The high conversion efficiency and high signal-to-noise ratio have been achieved. This device can be used as a frequency converter and an optical phase conjugator.

我们研究了未来FDM光学网络的设备和系统技术。可调，LASCR，频率转换设备和FDM传输技术集中在以下内容中总结。（1）可调Laserswe在1,5MUM区域开发了两种类型的频率可调激光器。一个是外部环形半导体激光器。在此激光器中已经实现了模式的无跳动操作。另一种是掺杂的纤维激光器，其极化和单个模式通过特殊设计的腔结构稳定。（2）密集的FDM传输技术，我们提出了一种新型的分散设计方法，用于长距离密集的FDM传输系统。为了进一步提高传输能力，发现中途相结合是有效的。（3）FDM Systemswe的所有光学信号处理通过使用外部环腔半导体激光器开发了腔内四波混合装置。已经达到了高转化效率和高信噪比。该设备可以用作频转换器和光相结合器。

项目成果

C.Lorattanasane,K.Kikuchi: "Design theory of long-distance optical transmission systems using midway optical phase conjugation" J.Lightwave Technol.(発表予定). (1997)

C.Lorattanasane、K.Kikuchi：“使用中途光学相位共轭的长距离光传输系统的设计理论”J.Lightwave Technol（即将发表）。

C.Lorattanasane and K.Kikuchi: "Design theory of long-distance optical transmission systems using midway optical phase conjugation" J.Lightwave Technol.(発表予定). (1997)

C.Lorattanasane 和 K.Kikuchi：“使用中途光学相位共轭的长距离光传输系统的设计理论”J.Lightwave Technol（即将发表）。

Y. Takushima and K. Kikuchi: "Spectral gain hole burning and modulation instability in a Brillouin fiber amplifier" Optics Lettevs. 20. 34-36 (1995)

Y. Takushima 和 K. Kikuchi：“布里渊光纤放大器中的光谱增益烧孔和调制不稳定性”Optics Lettevs。

菊地和朗: "位相共役光通信システム" レーザー研究. 24,6. 649-655 (1996)

菊池一明：“相位共轭光通信系统”激光研究 24,6（1996）。

Y.Takushima et al: "Single-frequency and polarization-stable oseillation of Fabry-Perot fiber laser using a non polarzation- maintaining fiber----" IEEE Photonics Technol Lett. 8-11. 1468-1470 (1996)

Y.Takushima 等人：“使用非保偏光纤的法布里-珀罗光纤激光器的单频和偏振稳定振荡——”IEEE Photonics Technol Lett。