A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements

A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements

A simple and high sensitive method employing a hybrid long period grating (LPG)/chirped fiber Bragg grating (CFBG) for refractive index (RI) measurements is proposed and investigated experimentally. The wide wavelength range of backward cladding modes are excited through the coupling and recoupling...

Full description

Bibliographic Details
Main Authors: An Sun, Zhishen Wu
Format: Article
Language:English
Published: MDPI AG 2012-05-01
Series:Sensors
Subjects:
optical fiber sensor
refractive index
hybrid FBG/LPG
cladding modes
Online Access:http://www.mdpi.com/1424-8220/12/6/7318
id doaj-8c6ede48a31046d7900c79751072b6ac
record_format Article
spelling doaj-8c6ede48a31046d7900c79751072b6ac2020-11-25T01:41:36ZengMDPI AGSensors1424-82202012-05-011267318732510.3390/s120607318A Hybrid LPG/CFBG for Highly Sensitive Refractive Index MeasurementsAn SunZhishen WuA simple and high sensitive method employing a hybrid long period grating (LPG)/chirped fiber Bragg grating (CFBG) for refractive index (RI) measurements is proposed and investigated experimentally. The wide wavelength range of backward cladding modes are excited through the coupling and recoupling between LPG and CFBG. Experimental results indicate that the recoupled cladding modes between LPG and CFBG and core mode are modulated by the surrounding RI and highly sensitive RI measurements can be achieved by simply measuring the reflected intensity changes of the recoupled cladding modes and core mode.http://www.mdpi.com/1424-8220/12/6/7318optical fiber sensorrefractive indexhybrid FBG/LPGcladding modes
collection DOAJ
language English
format Article
sources DOAJ
author An Sun
Zhishen Wu
spellingShingle An Sun
Zhishen Wu
A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
Sensors
optical fiber sensor
refractive index
hybrid FBG/LPG
cladding modes
author_facet An Sun
Zhishen Wu
author_sort An Sun
title A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_short A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_full A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_fullStr A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_full_unstemmed A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_sort hybrid lpg/cfbg for highly sensitive refractive index measurements
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2012-05-01
description A simple and high sensitive method employing a hybrid long period grating (LPG)/chirped fiber Bragg grating (CFBG) for refractive index (RI) measurements is proposed and investigated experimentally. The wide wavelength range of backward cladding modes are excited through the coupling and recoupling between LPG and CFBG. Experimental results indicate that the recoupled cladding modes between LPG and CFBG and core mode are modulated by the surrounding RI and highly sensitive RI measurements can be achieved by simply measuring the reflected intensity changes of the recoupled cladding modes and core mode.
topic optical fiber sensor
refractive index
hybrid FBG/LPG
cladding modes
url http://www.mdpi.com/1424-8220/12/6/7318
work_keys_str_mv AT ansun ahybridlpgcfbgforhighlysensitiverefractiveindexmeasurements
AT zhishenwu ahybridlpgcfbgforhighlysensitiverefractiveindexmeasurements
AT ansun hybridlpgcfbgforhighlysensitiverefractiveindexmeasurements
AT zhishenwu hybridlpgcfbgforhighlysensitiverefractiveindexmeasurements
_version_ 1725040813195395072

Similar Items