Analytical Solutions Describing New Features of Guided Wave Modes in a Circular Fiber Consisting of a Constant-Index Core and a Graded-Index Cladding with Saturation

Author:

,S.E. SAVOTCHENKO

Abstract

New features of the light beam localization in radial direction in an optical medium with a spatial saturation of the refractive index are described analytically. A new model of radial-dependent distribution of the dielectric function, which allows obtaining the exact analytical solutions to the wave equation, is formulated. Two types of waveguide modes characterized by different transverse electric field distributions are found. The first type of modes is characterized by minimum of the electric field at the core center maximum inside the core. These modes correspond to different values of the angular distribution number. The second type of modes is characterized by oscillations of the electric field inside the core. These modes correspond to different numbers of the dispersion equation solution with fixed values of the angular distribution number. The light intensity increases and the beam localization radius increases with the growth of the core radius. An increase of the value of change in the dielectric constant over the cladding leads to a slight increase of the light intensity but the beam localization radius stays almost the same. The propagation constant enlarges monotonically with the growth of the core radius and it decreases very little with the growth of the value of change in the dielectric constant over the cladding. The minimum core radius, starting from which it is possible to excite the waveguide mode, and the critical core radius for which the power flow is minimal, are found. It is derived analytically that the confinement factor monotonically increases with the growth of the core radius.

Publisher

Editura Academiei Romane

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3