光纤复合低压电缆温度分布与光单元传输特性研究

J4 ›› 2017, Vol. 34 ›› Issue (1): 88-93.

光纤复合低压电缆温度分布与光单元传输特性研究

涂兴华，倪彬，李军博

南京邮电大学光电工程学院光电传感工程研究中心，江苏南京 210023

收稿日期:2016-04-18 修回日期:2016-05-06 出版日期:2017-01-28 发布日期:2017-01-28
通讯作者: 涂兴华（1976－），安徽阜南人，博士，主要从事光通信技术与光通信器件研究 E-mail:tuxh@njupt.edu.cn
基金资助:
Supported by National Natural Science Foundation of China(国家自然科学基金,11547031), Open Fundation of State Key Laboratory of Advanced Optical Communication Systems and Networks of Shanghai Jiao Tong University of China (区域光纤通信网与新型光通信系统国家重点实验室”开放基金, 2015GZKF03006) , Research Center of Optical Communications Engineering & Technology of Jiangsu Province(江苏省光通信工程技术研究中心资助项目, ZSF0201), Teaching Reform Project of Nanjing University of Posts and Telecommunications (南京邮电大学教改项目,JG00613JX61)

Fiber composite low-voltage cable temperature distribution and optical unit transmission characteristics

TU Xinghua, NI Bin, LI Junbo

Research Center of Optoelectronics Sensing Engineering, School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2016-04-18 Revised:2016-05-06 Published:2017-01-28 Online:2017-01-28

摘要/Abstract

摘要： 研究线缆发热与光单元传输特性变化之间的关系对光纤复合低压电缆(OPLC)设计及应用十分重要。用COMSOL软件模拟仿真光纤复合低压电缆的稳定运行和短路故障状态，得到其相应的电缆温度分布以及光单元传输损耗特性。选取线缆上不同位置处的特征点进行仿真，结果表明：电缆故障时导体绝缘层内升温较明显，外护套温度变化不明显；光纤温度变化很小，其温度在5 s内只有0.2 ℃的上升。由热膨胀引起的位移很小，使得传输损耗在这2种情况下几乎一样，短路故障对光纤的温度影响不大。设计光单元升温实验得到光缆传输损耗的数据，并与仿真数据进行对比分析。实测温度数据滞后于仿真数据5 s，但与仿真数据变化趋势一致，证明了仿真模型的可靠性和可行性。

关键词: 光通信；温度分布；COMSOL仿真；光纤复合低压电缆；传输损耗；短路升温

Abstract: Investigation of relationship between the heat caused by electricity in cables and change of the optical unit transmission characteristics is very important on the design and application of fiber composite low voltage cable(OPLC). Stable operation and short circuit fault state of fiber composite low voltage cables are simulated with COMSOL software, and the corresponding cable temperature distribution and optical unit transmission loss characteristics are obtained. The characteristic points of different position on the cable are selected for simulation. Results show that the temperature rising is obvious in the conductor insulation layer when the cable is in trouble, and the outer sheath temperature change is not obvious. The fiber temperature change is very small, and its temperature is only 0.2 ℃ rise within 5 s. The displacement caused by thermal expansion is very small, so that the transmission loss are almost the same in the two cases. Short circuit faults have little effect on the temperature of the optical fiber. Temperature rise test of optical unit is designed to obtain optical cable transmission loss data, and those are compared and analyzed with the simulation data. The measured temperature data lag behind the simulation data 5 s, but it is consistent with the change trend of the simulation data. It is proved that the simulation model is reliable and feasible.

Key words: optical communication; temperature distribution; COMSOL simulation; optical fiber composite low voltage cable; transmission loss; temperature rising with short-circuit

中图分类号:

TM247
TN012

涂兴华，倪彬，李军博. 光纤复合低压电缆温度分布与光单元传输特性研究[J]. J4, 2017, 34(1): 88-93.

TU Xinghua, NI Bin, LI Junbo. Fiber composite low-voltage cable temperature distribution and optical unit transmission characteristics [J]. J4, 2017, 34(1): 88-93.