Simultaneous Measurement Based on Composite Interference Structure

Author

Zhengrong Tong ; Jun Su ; Ye Cao ; Weihua Zhang

Author_Institution

Sch. of Comput. & Commun. Eng., Tianjin Univ. of Technol., Tianjin, China

Volume

26

Issue

13

fYear

2014

fDate

1-Jul-14

Firstpage

1310

Lastpage

1313

Abstract

A novel double-parameters sensor based on composite interference structure has been designed and implemented in this letter. It can be regarded as a cascade of the traditional single mode-multimode-single mode structure and multimode-single mode-multimode structure. The output signal is a series of interference superposition; external parameters can be measured by monitoring the spectral characteristics of interference dips. The interesting properties of the sensor include good operation linearity. In addition, simultaneous measurement of temperature and refractive index have been achieved. The sensitivities of temperature and refractive index can reach up to 0.1385 nm/°C and 100.97 nm/RIU, respectively.

Keywords

fibre optic sensors; light interferometry; refractive index measurement; temperature measurement; temperature sensors; composite interference structure; double-parameter sensor; external parameters; interference dips; interference superposition; multimode-single mode-multimode structure; output signal; refractive index sensitivity; simultaneous refractive index measurement; simultaneous temperature measurement; spectral characteristic monitoring; temperature sensitivity; traditional single mode-multimode-single mode structure; Interference; Optical fiber sensors; Optical fibers; Refractive index; Sensitivity; Temperature measurement; Temperature sensors; MSM; Optical sensor; SMS; simultaneous measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2320593

Filename

6809967