A modified Sagnac/Mach-Zehnder interferometer for distributed disturbance sensing

被引：10
|
作者：
Chtcherbakov, AA [1 ]
Swart, PL [1 ]
Spammer, SJ [1 ]
Lacquet, BM [1 ]
机构：
[1] Rand Afrikaans Univ, Sensors Sources & Signal Proc Res Grp, Dept Elect & Elect Engn, ZA-2006 Auckland Pk, South Africa
来源：
FOURTH PACIFIC NORTHWEST FIBER OPTIC SENSOR WORKSHOP | 1998年 / 3489卷
关键词：
D O I：
10.1117/12.323432
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose an alternative configuration for an interferometric distributed fiber optic sensor. The sensor uses a combination of Mach-Zehnder and Sagnac interferometers that share the same fiber. The output of the Sagnac interferometer is proportional to the product of the position where the disturbance was applied and the magnitude of the disturbance. The output of the Mach-Zehnder interferometer is a function of the disturbance magnitude only. The position and magnitude of a disturbance applied to the sensing fiber can thus be obtained from these two signals. Results obtained with a 200m distributed fiber sensor are discussed.
引用
收藏
页码：60 / 64
页数：5
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