Humidity sensor based on a long-period fiber grating coated with a hydrophobic thin film
Autor: | Urrutia Azcona, Aitor, Rivero Fuente, Pedro J., Goicoechea Fernández, Javier, Arregui San Martín, Francisco Javier, Matías Maestro, Ignacio |
---|---|
Přispěvatelé: | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISC - Institute of Smart Cities, Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Saila |
Rok vydání: | 2010 |
Předmět: | |
Zdroj: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname |
Popis: | Póster presentado al 4th European Workshop on Optical Fibre Sensors. Oporto, 2010. In this work it is proposed a novel fiber optic humidity sensor based on a functionally coated long-period fiber grating (LPG). The coating is composed of tetraorthosilicate matrix functionalized with perfluorooctyltriethoxysilane and its fabrication was performed by the sol-gel technique using a dip coating process using the LPG as substrate. This technique allows to fabricate sensitive films in a fast and simple way compared to other overlay fabrication techniques. The fabricated sensor was tested in a programmable temperature and climatic chamber. Relative humidity (RH) was varied in range from 20%RH to 80%RH at room temperature. The results showed a smooth exponential-like wavelength shift of the LPG attenuation band. This work was funded in part by the Spanish Ministry of Education and Science-FEDER Research Grant TEC2009-09210 |
Databáze: | OpenAIRE |
Externí odkaz: |
Pro tento záznam nejsou dostupné žádné jednotky.