Study On Optical Communications, Volume. 51, Issue 4, 250010(2025)
Research and Verification of Key Technologies of Submarine Cable based on Fine Diameter Fiber
Figures & Tables(15)
Fig. 1. Allowable strain ε and failure probability F of fine diameter fiber under different conditions
Fig. 2. Relationship between fine diameter fiber bend loss Loss and curvature radius R
Fig. 3. Qualified rate of fiber fusion under optimal parameter combination
Fig. 6. Chromatic dispersion variation of fine diameter fiber during cabling
Table 1. Main technical specification of fine diameter fiber submarine cable
View tableView in ArticleTable 1. Main technical specification of fine diameter fiber submarine cable
项目 标称值 项目 标称值 最大光纤芯数/芯 48（200 μm） 标称永久拉力负荷/kN 30 光单元外径/mm 3.2 导体直流电阻@3 ℃/Ω/km <0.9 海底光缆外径/mm 18 绝缘电阻/GΩ·km >100 最小断裂负荷/kN 95 最大工作电压/kV 20 标称瞬时拉力负荷/kN 75 最大适用水深/m 8 000 标称工作拉力负荷/kN 45
Table 2. Fine diameter fiber structural parameters
View tableView in ArticleTable 2. Fine diameter fiber structural parameters
参数 典型值 纤芯直径/μm 8.7 模场直径@1 550 nm/μm 10.4 包层直径/μm 125 涂覆层直径/μm 205 相对折射率差（%） 0.37
Table 3. Fine diameter fiber fusion equipment
View tableView in ArticleTable 3. Fine diameter fiber fusion equipment
设备名称 功能 热剥除 剥除光纤涂覆层 清洗机 清洗光纤包层 切割刀 切割光纤端面 熔接机 熔接光纤 涂覆机 熔接点涂覆保护 光纤夹具 夹持光纤 涂覆模具 定型涂覆尺寸
Table 4. Orthogonal experimental design scheme and results of fusion parameters
View tableView in ArticleTable 4. Orthogonal experimental design scheme and results of fusion parameters
试验编号 放电时间（A）/ms 放电功率增量（B）/bit 重叠量（C）/μm 合格率（%） 1 1 1 1 78 2 1 2 2 84 3 1 3 3 80 4 1 4 4 75 5 2 1 2 85 6 2 2 1 86 7 2 3 4 86 8 2 4 3 88 9 3 1 3 90 10 3 2 4 93 11 3 3 1 88 12 3 4 2 86 13 4 1 4 80 14 4 2 3 86 15 4 3 2 83 16 4 4 1 80
Table 5. Orthogonal experimental design statistical results of fusion parameters
View tableView in ArticleTable 5. Orthogonal experimental design statistical results of fusion parameters
统计时间 A/ms B/bit C/μm 
106 111 111 
115 116 113 
119 112 115 
110 110 111 极差 13 7 4
Table 6. Cabling performance results of fine diameter fiber
View tableView in ArticleTable 6. Cabling performance results of fine diameter fiber
性能指标 成缆结果 成缆最大附加值 最小值 最大值 衰减系数@1 550 nm/dB/km 0.178 0.181 0.002 色散系数@1 550 nm/ps/（nm·km） 16.912 17.271 0.211
Table 7. Key performance test of fine diameter fiber submarine cable
View tableView in ArticleTable 7. Key performance test of fine diameter fiber submarine cable
试验项目 接受标准 最大差值 限制绞合拉伸试验 0.017 最小化扭矩拉伸试验 0.007 机械疲劳试验 0.012 过滑轮试验 整个试验期间，光透射性能变化≤0.05 dB 0.006 耐压扁试验 0.001 耐冲击试验 0 耐挠曲试验 0.001 温度循环试验 0.001
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Yunpeng SUN, Guoxiang XU, Rendong XU, Huiling KANG, Chang WANG, Wei YIN. Research and Verification of Key Technologies of Submarine Cable based on Fine Diameter Fiber[J]. Study On Optical Communications, 2025, 51(4): 250010
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Received: Jan. 13, 2025
Accepted: --
Published Online: Sep. 8, 2025
The Author Email: Yunpeng SUN (756325614@qq.com)
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