Characterization of Long-period Grating Refractive Index Sensors and Their Applications

Characterization of Long-period Grating Refractive Index Sensors and Their Applications

The influence of grating length and bend radius of long-period gratings (LPGs) on refractive index sensing was examined. Sensitivity to refractive indexes smaller than that of silica could be enhanced by bending LPGs. Bent LPGs lost sensitivity to refractive indexes higher than that of silica, where...

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Bibliographic Details
Main Authors: Kei Urabe, Hiroshi Tsuda
Format: Article
Language:English
Published: MDPI AG 2009-06-01
Series:Sensors
Subjects:
long-period grating
refractive index
spectral sensitivity
Online Access:http://www.mdpi.com/1424-8220/9/6/4559/
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spelling doaj-46052075bc984bbea343ee424d6caa5b2020-11-25T01:26:48ZengMDPI AGSensors1424-82202009-06-01964559457110.3390/s90604559Characterization of Long-period Grating Refractive Index Sensors and Their ApplicationsKei UrabeHiroshi TsudaThe influence of grating length and bend radius of long-period gratings (LPGs) on refractive index sensing was examined. Sensitivity to refractive indexes smaller than that of silica could be enhanced by bending LPGs. Bent LPGs lost sensitivity to refractive indexes higher than that of silica, whereas a 20-mm-long LPG arranged in a straight line had considerable sensitivity. These experimental results demonstrated that the sensitivity characteristics of LPGs to refractive index could be controlled by grating length and bend radius. http://www.mdpi.com/1424-8220/9/6/4559/long-period gratingrefractive indexspectral sensitivity
collection DOAJ
language English
format Article
sources DOAJ
author Kei Urabe
Hiroshi Tsuda
spellingShingle Kei Urabe
Hiroshi Tsuda
Characterization of Long-period Grating Refractive Index Sensors and Their Applications
Sensors
long-period grating
refractive index
spectral sensitivity
author_facet Kei Urabe
Hiroshi Tsuda
author_sort Kei Urabe
title Characterization of Long-period Grating Refractive Index Sensors and Their Applications
title_short Characterization of Long-period Grating Refractive Index Sensors and Their Applications
title_full Characterization of Long-period Grating Refractive Index Sensors and Their Applications
title_fullStr Characterization of Long-period Grating Refractive Index Sensors and Their Applications
title_full_unstemmed Characterization of Long-period Grating Refractive Index Sensors and Their Applications
title_sort characterization of long-period grating refractive index sensors and their applications
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2009-06-01
description The influence of grating length and bend radius of long-period gratings (LPGs) on refractive index sensing was examined. Sensitivity to refractive indexes smaller than that of silica could be enhanced by bending LPGs. Bent LPGs lost sensitivity to refractive indexes higher than that of silica, whereas a 20-mm-long LPG arranged in a straight line had considerable sensitivity. These experimental results demonstrated that the sensitivity characteristics of LPGs to refractive index could be controlled by grating length and bend radius.
topic long-period grating
refractive index
spectral sensitivity
url http://www.mdpi.com/1424-8220/9/6/4559/
work_keys_str_mv AT keiurabe characterizationoflongperiodgratingrefractiveindexsensorsandtheirapplications
AT hiroshitsuda characterizationoflongperiodgratingrefractiveindexsensorsandtheirapplications
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