Document Detail

Optical fiber long-period grating humidity sensor with poly(ethylene oxide)/cobalt chloride coating.
MedLine Citation:
PMID:  16799666     Owner:  NLM     Status:  PubMed-not-MEDLINE    
A long-period fiber grating (LPFG) humidity sensor is reported utilizing poly(ethylene oxide)/cobalt chloride (PEO/CoCl2) as a hybrid hygrosensitive cladding coating. A thin overlay of the material is deposited on the LPFG and with exposure to different ambient humidity levels, its spectral properties are modified. The material parameters associated with the sensing mechanism may include those of refractive index, absorption, and morphological alterations of the overlaid material. Relative humidity variations in the range from 50% to 95% have been detected with a resolution better than 0.2%. The response time constant of the fiber sensor is of the order of a few hundred milliseconds.
Maria Konstantaki; Stavros Pissadakis; Stergios Pispas; Nicholas Madamopoulos; Nikos A Vainos
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  45     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-06-26     Completed Date:  2006-08-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4567-71     Citation Subset:  -    
Institute of Electronic Stucture and Laser, Foundation for Research and Technology-Hellas, Greece.
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