基于外部气相沉积工艺的新型大有效面积非零色散位移光纤的设计与制备  

Design and Fabrication of Novel Large Effective Area Non-Zero Dispersion-Shifted Optical Fiber Based on Outside Vapor Deposition

作　　者：查健江 陈强 兰兴铃 张俊 文建湘[3] Zha Jianjiang;Chen Qiang;Lan Xingling;Zhang Jun;Wen Jianxiang(Shandong Futong Optelecom Science&Technology Co.,Ltd.,Jinan 250119,Shandong,China;Chengdu Futong Optical Communication Technologies Co.,Ltd.,Chengdu 611731,Sichuan,China;Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication,Shanghai University,Shanghai 200444,China)

机构地区：[1]山东富通光导科技有限公司,山东济南250119 [2]成都富通光通信技术有限公司,四川成都611731 [3]上海大学特种光纤与光接入网省部共建国家重点实验室培育基地/特种光纤与先进通信国际合作联合实验室,上海200444

出　　处：《中国激光》2022年第23期141-149,共9页Chinese Journal of Lasers

基　　金：国家自然科学基金(61935002,61635006)。

摘　　要：采用一种具有中心凹陷的三角芯+环型的折射率剖面设计,利用外部气相沉积(OVD)工艺制备了新型非零色散位移G.655.D光纤。实验结果表明:在1550 nm和1625 nm波长处,光纤的衰减值分别为0.195 dB/km和0.203 dB/km,截止波长为1200 nm;将光纤绕在半径为25 mm的圆柱体上100圈,此时其在1550 nm和1625 nm波长处的宏弯损耗值分别低于0.027 dB和0.045 dB;该光纤在1530~1625 nm波段的色散为1.6~9.5 ps/(nm·km),尤其是在1550 nm波长处,其有效面积达到72μm^(2),比常规G.653光纤大1.4倍。通过这种设计和方法制备的光纤可以实现零色散波长的平移,获得良好的纵向色散均匀性、较低的弯曲损耗以及较大的有效面积,适用于1530~1625 nm波段的密集波分复用应用,在长距离光纤通信中对四波混频(FWM)、交叉相位调制(XPM)等非线性效应具有较好的抑制作用,可以减少色散管理成本,具有非常重要的应用价值。Objective Transmission networks are facing explosive growth in data traffic owing to the rapid developments in data centers and cloud computing services.Optical networks with high speeds,large capacities,and high-cost performances are now in urgent demand.Telecom operators and equipment manufacturers are actively promoting the application and deployment of 400G technologies.To further develop and utilize the transmission capacity of a single fiber and approach the limit of Shannon’s theorem,the next research direction of optical transmission is prioritizing further improvements in the capacity of a single channel,compressing the transmission channel interval,and increasing the number of channels.However,increasing the number of multiplexed channels leads to a serious nonlinear effect,which is inversely proportional to the effective area of the fiber.Therefore,the transmission bandwidth and nonlinear effect of the fiber can be improved and reduced,respectively,by increasing the effective area of the fiber.Consequently,the development of next-generation G.655 and G.656 fibers,particularly for broadband transmission DWDM systems,has important practical application value.Methods In this experiment,outside vapor deposition(OVD)was used to fabricate a non-zero dispersion-shifted fiber(Fig.3).According to the transmission principle of optical fibers,G.655 must increase the refractive index difference(RID)of the 1st core layerΔn1 to increase the waveguide dispersion and shift the zero dispersion wavelength to 1500 nm,but the increase inΔn1 leads to a decrease in the fiber core radius.However,a core radius that is extremely small results in an increase in the dispersion and nonlinear effects caused by high power density.Therefore,the profile structure selected in this experiment is a triangular core and ring structure with a central depression(Fig.2).First,by decreasing the RID and gradually increasing the thickness of the 2nd/3rd core radii,the mold field diameter(MFD),zerodispersion wavelength,and other parameters o

关 键 词：光纤光学 外部气相沉积工艺 G.655.D光纤 大有效面积 非零色散位移 密集波分复用 光纤设计与制造 

分 类 号：O436[机械工程—光学工程]