CUT-OFF WAVELENGTH MEASUREMENTS FOR SINGLE-MODE OPTICAL FIBERS

被引：45

作者：

MURAKAMI, Y

KAWANA, A

TSUCHIYA, H

机构：

[1] Nippon Telegraph and Telephone Public Corporation, Electrical Communication Laboratories, Musashino-shi, Tokyo

来源：

APPLIED OPTICS | 1979年 / 18卷 / 07期

关键词：

D O I：

10.1364/AO.18.001101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new technique has been proposed for direct measurement of the cut-off wavelength, at which the first higher-order mode disappears.It uses a change of a near-field pattern of a fiber, which is excited by a variable wavelength source.The cut-off wavelength can be measured with ±5-nm accuracy.The most suitable fiber length for precise measurement is 10–20 mm.It is found, furthermore, that the first higher-order mode under the condition near cut-off rapidly attenuates because of waveguide imperfections, in which the loss due to core-cladding boundary distortions is the most dominant.© 1979 Optical Society of America.

引用

页码：1101 / 1105

页数：5

共 13 条

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