Variational analysis of propagation characteristics in thermally diffused expanded core fibers

被引：35

作者：

Kliros, GS ^{[1
]}

Tsironikos, N ^{[1
]}

机构：

[1] Hellen Air Force Acad, Dept Elect & Comp Engn, Dekelia Air Force Base, TGA-1010 Dekelia, Attica, Greece

来源：

OPTIK | 2005年 / 116卷 / 08期

关键词：

coupling losses; propagation characteristics; thermally diffused expanded core (TEC) fibers; variational methods;

D O I：

10.1016/j.ijleo.2005.02.009

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a scalar variational method for the analysis of light-propagation characteristics in thermally diffused expanded core (TEC) fibers. The method leads to simple closed-form expressions regarding the mode field diameter, numerical aperture, waveguide dispersion as well as coupling losses produced by radial, longitudinal and angular misalignments. The dependence of coupling losses on the 'taper ratio' and normalized frequency is investigated and previous predictions that TEC fibers transmit light more effectively in free space over the order of millimeters, is confirmed. The coupling losses between small core diameter step-index fibers typically used in most erbium-doped fiber amplifiers and TEC-fibers is also considered. (c) 2005 Elsevier GmbH. All rights reserved.

引用

页码：365 / 374

页数：10

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