Quasi-distributed refractometer using tilted Bragg gratings and time domain reflectometry

被引：18
|
作者：
Caucheteur, Christophe [1 ]
Wuilpart, Marc [1 ]
Chen, Chengkun [2 ]
Megret, Patrice [1 ]
Albert, Jacques [2 ]
机构：
[1] Fac Polytech Mons, Electromagnetism & Telecom Unit, B-7000 Mons, Belgium
[2] Carleton Univ, Dept Elect, Ottawa, ON K1S 5B6, Canada
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 22期
关键词：
D O I：
10.1364/OE.16.017882
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Tilted fiber Bragg gratings (TFBGs) have been demonstrated to be accurate refractometers as they couple light from the fiber core to the cladding. Because they require spectral measurements on several tens of nanometers, demodulation techniques reported so far are not suited for quasi-distributed refractive index sensing using TFBGs cascaded along a single optical fiber. We demonstrate here that a commercial Optical Time Domain Reflectometer (OTDR) can be used to multiplex identical TFBGs refractometers written in the same optical fiber. Our solution is simple, relatively fast, cost-effective and is particularly interesting for the monitoring of long structures. (C) 2008 Optical Society of America
引用
收藏
页码：17882 / 17890
页数：9
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