弱耦合多芯少模光纤的声波导布里渊散射特性  

Characteristics of Guided Acoustic Wave Brillouin Scattering in Uncoupled Seven-core Few-mode Fiber

作　　者：张泽霖 周慧 秦钰 许维维 蒋新力[3] 曹珊珊 谢书鸿[3] 沈一春 肖力敏 ZHANG Ze-lin;ZHOU Hui;QIN Yu;XU Wei-wei;JIANG Xin-li;CAO Shan-shan;XIE Shu-hong;SHEN Yi-chun;XIAO Li-min(Zhongtian Technology Advanced Materials Co.,Ltd.,Nantong 226009,China;School of Information Science and Technology,Fudan University,Shanghai 200433,China;Zhongtian Technology Group,Nantong 226463,China;Zhongtian Technology Fiber Co.,Ltd.,Nantong 226009,China)

机构地区：[1]中天科技精密材料有限公司,江苏南通226009 [2]复旦大学信息科学与工程学院,上海200433 [3]江苏中天科技股份有限公司,江苏南通226463 [4]中天科技光纤有限公司,江苏南通226009

出　　处：《光通信研究》2023年第2期23-28,39,共7页Study on Optical Communications

基　　金：工信部高质量制造发展专项资助项目(TC220A04A-40)。

摘　　要：光纤中的声波导布里渊散射(GAWBS)可在较低光功率水平激发,该散射噪声对大容量空分复用光纤通信、数字相干传输及光量子传输影响较大。针对空分复用光纤通信系统,文章对自制弱耦合7芯4模光纤的GAWBS特性进行了理论和实验研究。结果表明,由于不同纤芯与光纤中心的距离差异,弱耦合7芯4模光纤中不同纤芯具有明显的GAWBS分布差异。未来需要在不同的纤芯中采取不同的GAWBS噪声补偿方法以实现高信噪比和低误码率的空分复用传输。The Guided Acoustic Wave Brillouin Scattering(GAWBS)in fibers will be excited at a low optical power level,which can cause large impairments on high-capacity spatial division multiplexing optical fiber communication,digital coherent transmission and optical quantum transmission.For spatial division multiplexing optical fiber communication system,we theoretically and experimentally investigate the characteristics of GAWBS in the self-made uncoupled seven-core four-mode fiber.The results indicate that,the cores exhibit the significant differences of GAWBS characteristics depending on their distances from the fiber center.In future,the disparate GAWBS noise compensation method for each core can be utilized to achieve a high signal-to-noise ratio for spatial division multiplexing transmission with low error rate.

关 键 词：空分复用 多芯光纤 少模光纤 声波导布里渊散射 声光相互作用 

分 类 号：TN914[电子电信—通信与信息系统] TN252[电子电信—信息与通信工程]