Fiber optical Bragg grating refractometer

被引：111

作者：

Asseh, A ^{[1
]}

Sandgren, S

Ahlfeldt, H

Sahlgren, B

Stubbe, R

Edwall, G

机构：

[1] Royal Inst Technol, Dept Phys 2, S-10044 Stockholm, Sweden

[2] Royal Inst Technol, Inst Opt Res, S-10044 Stockholm, Sweden

[3] Ind Microelect Ctr, Kista, Sweden

来源：

FIBER AND INTEGRATED OPTICS | 1998年 / 17卷 / 01期

关键词：

Bragg gratings; evanescent field sensing; fiber optical sensors; refractive index; tunable lasers;

D O I：

10.1080/014680398245055

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have demonstrated an evanescent field refractive index fiber sensor comprising a 42-mm Bragg grating in an etched fiber together with a tunable Distributed Bragg Reflector (DBR) laser. Characterization of different aqueous sucrose solutions resulted in a resolution of roughly 10 mM sucrose. The sensor in the presented form has a theoretical sensitivity of higher than 10(-5) refractive index unit (riu) in a refractive index region close to the cladding index of the fiber. However the technique allows for an even higher sensitivity than 10(-6) riu with a proper signal processing scheme.

引用

页码：51 / 62

页数：12

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