丁为民, 代岭, 杨珩. Influence of macro bend loss of optical fiber on optical attenuation of ONU in ODN[J]. 2021, 34(6): 77-80.
DOI:
丁为民, 代岭, 杨珩. Influence of macro bend loss of optical fiber on optical attenuation of ONU in ODN[J]. 2021, 34(6): 77-80. DOI: 10.13992/j.cnki.tetas.2021.06.016.
Influence of macro bend loss of optical fiber on optical attenuation of ONU in ODN
摘要
本文通过对ONU弱光的ODN链路衰耗进行分析
发现ODN链路的下行衰耗严重超标的现象
在用OTDR进行故障定位并测试光纤在相应波长的宏弯损耗后
得出光纤的宏弯损耗是导致ODN链路下行衰耗超标的原因
进一步对ODN链路的入户段光缆进行衰耗测试
从而验证了宏弯损耗是引起ONU弱光的主要原因。
Abstract
Through the analysis of ODN link attenuation with high optical attenuation of ONU
it is found that the downlink attenuation of ODN link exceeds the standard seriously. After using OTDR to locate the fault and test the macro bend loss of optical fiber at corresponding wavelength
it is concluded that the macro bend loss of optical fiber is the cause of ODN link downlink attenuation exceeding the standard; further
the attenuation test is conducted for the optical cable in the home section of ODN link. It is verified that the macro bend loss is the main reason for the high optical attenuation of ONU.