Humidity sensor based on a long-period fiber grating coated with a SiO2-nanospheres film - art. no. 70044O

• Type: Article in International Conference Proceedings Book
• Date: 2008

Authors

Viegas, D (Author) Other; Goicoechea, J (Author) Other; Corres, JM (Author) Other; Santos, JL (Author) FCUP; Ferreira, LA (Author) Other; Araujo, FM (Author) Other; Matias, IR (Author) Other

Conference proceedings International

Title: 19TH INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS, PTS 1 AND 2

Pages: O44-O44

19th International Conference on Optical Fibre Sensors

Perth, AUSTRALIA, APR 15-18, 2008

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 6 Citations

Scientific classification

FOS: Engineering and technology > Environmental biotechnology

Other information

Authenticus ID: P-004-543

DOI: 10.1117/12.786059

Abstract (EN): This work addresses a humidity sensor using long-period fiber gratings (LPG) coated with silica nanospheres film. SiO2-nanospheres coating is deposited onto the LPG using the electrostatic self-assembly technique (ESA). The polymeric overlay changes its optical properties when exposed to different humidity levels, resulting in a shift of the resonance wavelength of the LPG. The obtained results are accordant with the theoretical simulations. Wavelength shifts up to 12nm in a humidity range from 20% to 80% are reported, maintaining the same dependence at different temperatures.

Language: English

Type (Professor's evaluation): Scientific