Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 31, Issue 7, Pages 549-552Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2019.2901571
Keywords
Fabry-Perot; humidity measurement; optical interferometry; optical fibers; optical sensors; optical polymers; PVDF
Funding
- Fundacao para a Ciencia e Tecnologia (Portuguese Foundation for Science and Technology)
- European Regional Development Fund (ERDF) through the COMPETE Programme (Operational Programme for Competitiveness) [FCOMP-01-0124-FEDER-037281, NORTE-01-0145-FEDER-022096]
Ask authors/readers for more resources
An optical fiber Fabry-Perot (FP) for relative humidity (RH) sensing is proposed. The FP cavity is fabricated by splicing a short length of hollow silica tube in a single mode fiber. The fiber is then coated with a polyvinylidene fluoride (PVDF) thin film to work as a mirror. The fabrication process of the FP interferometer with a dip coating process in a PVDF/dimethyl formamide solution is presented. The pattern fringes of the FP suffer a wavelength shift due to the change in the PVDF's refractive index with the ambient RH variation. A short overview of the cavity's formation and stability is presented. The RH response of the FPI cavity is tested. The sensor presented a sensitivity of 32.54 pm/%RH at constant temperature and -15.2 pm/degrees C for temperature variation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
