FIBER CORE PROFILE CHARACTERIZATION BY MEASURING GROUP-VELOCITY EQUALIZATION WAVELENGTHS

被引：5

作者：

ARCHAMBAULT, JL ^{[1
]}

BLACK, RJ ^{[1
]}

BURES, J ^{[1
]}

GONTHIER, F ^{[1
]}

LACROIX, S ^{[1
]}

SARAVANOS, C ^{[1
]}

机构：

[1] NO TELECOM CANADA LTD,DIV OPT CABLE,SASKATOON S7K 3L7,SASKATCHEWAN,CANADA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1991年 / 3卷 / 04期

关键词：

D O I：

10.1109/68.82109

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：

When operated at shorter wavelengths, fibers that are single mode at telecommunications wavelengths of 1.3 and 1.55-mu-m become few mode. Relative values of the group velocity equalization wavelengths for the different mode pairs existing down to visible wavelengths are quite sensitive to the refractive-index profile. Their measurement by few-mode interferometry provides simple, fast, accurate characterization of fiber core refractive-index profile parameters: numerical aperture, core radius, central dip, and dopant diffusion. The new method is attractive as a complement or alternative to standard refracted-near-field and preform measurements.

引用

页码：351 / 353

页数：3

共 7 条

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