Fast polarization effects in optical aerial cables caused by lightning and impulse current

被引：22
|
作者：
Pietralunga, SM [1 ]
Colombelli, J
Fellegara, A
Martinelli, M
机构：
[1] CoreCom, I-20133 Milan, Italy
[2] EMBL, European Mol Biol Lab, D-69117 Heidelberg, Germany
[3] WIND Telecomunicaz SpA, I-00148 Rome, Italy
[4] Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2004年 / 16卷 / 11期
关键词：
lightning; optical fiber cables; power distribution lines; short circuit currents;
D O I：
10.1109/LPT.2004.835198
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effects of lightning and impulse currents on the perturbations of the state of polarization (SOP) of optical beams transmitted on aerial cables are emulated in a laboratory environment. Submicrosecond-resolved measurements enable us to distinguish and quantify the magnetooptic contributions due to the discharge current. The maximum of Faraday-induced circular birefringence associated to natural strokes is estimated in Deltan(lr) approximate to 10(-7) and may lead in a few microseconds to iterate swapping between orthogonal SOPs. The corresponding peak in relative phase delay, cumulated in transmission along a span, is evaluated as DeltaT(lr) approximate to 0.3 ps.
引用
收藏
页码：2583 / 2585
页数：3
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