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IPC

(21) (22)

Application

99116912/28, 1999-08-03

(24)

Start date

1999-08-03

(22)

Actual filing date

1999-08-03

(45)

Published

2000-09-27

(72)

Inventor

Burdin V.A.Burdin A.V.

(73)

Holder

Povolzhskaja Gosudarstvennaja Akademija Telekommunikatsij I Informatiki

METHOD FOR MEASURING MODE SPOT DIAMETER FOR SINGLE-MODE OPTICAL FIBER Russian patent published in 2000 - IPC

Abstract RU 2156989 C1

FIELD: optical instruments. SUBSTANCE: method involves measuring attenuation of optical beam at joint of tested and additional optical fibers, when mode spot diameter of additional fiber is known. Attenuation of optical beam at joint of tested and additional optical fibers is measured using inverse dissipation method in time span on two sides. Mode spot diameter of tested optical fiber conforms to condition W2t

= W2a
•10-0,5(at-aa), where at,αa are results of measurement of attenuation at joint of tested and additional optical fibers on side of tested and additional fibers, respectively; Wt,Wa are diameters of mode spot diameter of tested and additional fibers, respectively. EFFECT: simplified design of measurement, decreased error. 1 dwg

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RU 2 156 989 C1

Authors

Burdin V.A.

Burdin A.V.

Dates

2000-09-27—Published

1999-08-03—Filed

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