OFC 2024, Booth 2041, San Diego, California, March 26, 2024
Furukawa Electric Co., Ltd. (Head office: 2-6-4 Otemachi, Chiyoda-ku, Tokyo; President: Hideya Moridaira) has increased the quality of optical signal transmission at 800Gbps in the C+L band using an optical transmission system equipped with a Forward Raman Unit.
- 开发了C+L波段双向拉曼放大必不可少的正向拉曼单元
- With this method, the Q factor, which indicates the quality of the transmitted optical signal, has been increased by 0.5dB compared to backward Raman amplification and by 1.与标准光放大器(EDFA)相比，放大幅度为0dB。
- 该产品和前向拉曼单元将在计划于3月举行的OFC 2024上展出, 并在技术会议上做报告。新产品将在OFC 2024上展出, scheduled to be held in the United States, and plan to begin shipping samples in June 2024
Background
拉曼放大(注1)是光纤通信系统中的一项配套技术, and backward-pumped Raman amplification, which amplifies optical signals from the receiver side, is used normally. 考虑到光输出的宽带宽和低噪声特性，人们对前向拉曼单元有很高的期望, but the development of a low-noise optical pump source was an issue. 2023年3月，我们用前向泵浦拉曼放大解决了这个问题. 1)，并确认双向泵浦拉曼放大器具有低噪声放大特性，适用于实际光纤通信系统(图2). 2). 传输光信号的光噪声特性足够低, we could expect better quality of the optical signals (Q factor, Note 2).
Fig. 1 Forward Raman Unit.
Fig. 2双向泵浦拉曼放大光纤通信系统.
双向泵浦拉曼放大下光信号的质量
前向拉曼单元放大的带宽从仅C波段扩展到C+L波段, 通过以800Gbps (100Gbaud双偏振16QAM)传输光信号来测量输出信号质量。, which is the next-generation communications speed, 在150km以上的C+L波段通过标准光纤进行传输. We measured Q factor, which indicates quality of an optical signal, 利用正向拉曼单元通过双向泵浦拉曼放大放大光信号，并确认q因子提高0.与反向泵浦拉曼放大相比，提高了5dB.0dB与使用标准光放大器(EDFA:掺铒光纤放大器)相比. 3). 采用正向拉曼单元的双向泵浦拉曼放大将有助于在相同传输长度下获得更大的传输容量. This would impact future optical fiber communication systems.
This new development will be reported at OFC 2024 held on March 24-28, 2024, in San Diego (March 27 (Wednesday) at 16:30-16:45 (local time), W4D.1), and the Forward Raman Unit will be exhibited (OFS Booth # 2041).
OFC 2024 (English only): http://www.ofcconference.org/en-us/home/
Also, 目前的研究成果是作为国家信息通信技术研究所(NICT)委托研究(JPJ012368C04501)的一部分获得的。.
我们将继续努力提高前向拉曼单元的性能，支持电信社会的进步，实现所有光子网络完全由光连接在一起. 通过这种方式，我们将有助于建立对社会和环境友好的网络.
Fig. 3 C+L波段波分复用信号通过150km标准光纤传输时，光信号质量对C波段输入功率的依赖关系.
(注1)拉曼放大:当泵浦光输入到光纤中时, 受激拉曼散射发生在比泵浦光波长长100nm的波长区域. 如果信号光在这个散射区域内传播，它将被放大. In this way, Raman scattering can be used as an optical amplifier. This amplification has excellent characteristics, 包括宽放大带宽和任意带宽的放大, and it is widely used today.
(Note 2) Q factor (Quality factor): Quality of the optical signal. 它与信号和传输长度引起的误差和噪声有关. A larger value indicates higher optical signal quality.
Related News Release
Development of New Pump Source Technology for Raman Amplification
http://www.furukawa.co.jp/en/release/2019/kenkai_190306.html
低噪声信号传输正向拉曼单元的研制
http://www.furukawa.co.jp/en/release/2023/comm_20230227.html
Expanded bandwidth of FRL1441U Series – pump lasers for high output, low power consumption Raman amplifiers – for U-band application
http://www.furukawa.co.jp/en/release/2024/comm_20240126.html
About Furukawa Electric
Furukawa Electric Group’s Efforts Toward the SDGs
基于联合国通过的“可持续发展目标(SDGs)”, 古川电机集团制定了“古川电机2030愿景”，以2030年为目标，以“建设可持续发展的世界，让人们的生活更安全”为目标，不断推进, peaceful and rewarding, 古川电机集团将为新一代的全球基础设施结合信息创造解决方案, energy, and mobility.” Toward achieving our Vision 2030, we will take open, agile, 以及创新的方法来促进ESG管理，旨在提高企业的中长期价值，并有助于实现可持续发展目标.
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