Rayleigh backscattering from the fundamental mode in multimode optical fibers

被引：12
|
作者：
Bisyarin, M. A. [1 ]
Kotov, O. I. [2 ]
Hartog, A. H. [3 ]
Liokumovich, L. B. [2 ,4 ]
Ushakov, N. A. [2 ]
机构：
[1] St Petersburg State Univ, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
[2] Peter Great St Petersburg Polytech Univ, Dept Radiophys, 29 Polytech Skaya Ul, St Petersburg 195251, Russia
[3] Schlumberger Fiber Opt Technol Ctr, Unit 7, Abbey Pk Ind Estate, Southampton SO51 9DL, Hants, England
[4] Russian Acad Sci, Inst Appl Astron, 10 Kutuzova Embankment, St Petersburg 191187, Russia
来源：
APPLIED OPTICS | 2016年 / 55卷 / 19期
关键词：
GRADED-INDEX FIBERS; NEAR-FIELD INTENSITY; POWER DISTRIBUTION; LASER; OTDR;
D O I：
10.1364/AO.55.005041
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Rayleigh backscattering produced by an incident fundamental mode in a multimode optical fiber is analyzed using a diffraction technique, with a full set of backward-propagating modes being taken into consideration. Explicit formulas are derived for mode excitation efficiency via radial distributions of the mode fields, and it is proved that only half-azimuthal modes are backscattered by the incident wave of a fixed polarization. Advanced analytical expressions are developed for fibers with a quadratic refractive-index profile, and mode groups of even numbers, composed of modes with equal propagation constants, are stated to be excited with equal efficiencies. (C) 2016 Optical Society of America
引用
收藏
页码：5041 / 5051
页数：11
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