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Proceedings | Volume 6619 | Chemical, Environmental, Biomechanical, and Medical
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Proceedings Article

LPG-based PVA coated
sensor for relative humidity measurement

T.
Venugopalan ; T. L. Yeo ; T. Sun ; K. T. V. Grattan

[+-]
Author Affiliations

T. Venugopalan,
T. L. Yeo, T. Sun, K. T. V.
Grattan

City Univ. London (United Kingdom)

Proc.
SPIE 6619, Third European Workshop on Optical Fibre Sensors, 661925 (July 02,
2007); doi:10.1117/12.738625

Text Size: A A A

From Conference Volume 6619

Third European Workshop on Optical Fibre Sensors

Antonello Cutolo; Brian Culshaw; José Miguel López-Higuera

Napoli, Italy | July 04, 2007

Abstract

abstract

A long period grating (LPG)-based optical fiber sensor, coated
with polyvinyl alcohol, has been developed for relative humidity (RH)
measurement over the range from 33% RH to 97% RH, for which the grating response
has been monitored. The fiber optic sensor using the LPG has been designed to
monitor the change in resonance loss which is then related to the humidity
measured through calibration of the sensor with a series of materials of known
refractive index. Results on the calibration and use of the sensor are reported
and considered in this work, in light of other grating-based methods for
humidity measurement.
© (2007) COPYRIGHT SPIE--The International Society for
Optical Engineering. Downloading of the abstract is permitted for personal use
only.

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Topics
Calibration
; Fiber
optics sensors ; Humidity
; Refractive
index ; Sensors

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T. Venugopalan ; T. L. Yeo ; T. Sun ; K. T. V. Grattan; LPG-based PVA coated sensor for relative humidity measurement. Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 661925 (July 02, 2007); doi:10.1117/12.738625.

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