Title :
Novel Fiber-Optic Relative Humidity Sensor With Thermal Compensation
Author :
Korenko, Branislav ; Rothhardt, Manfred ; Hartung, Alexander ; Bartelt, Hartmut
Author_Institution :
Fac. of Electr. Eng. & Inf. Technol., Slovak Univ. of Technol. in Bratislava, Bratislava, Slovakia
Abstract :
A novel fiber-optic relative humidity (RH) sensor with thermal compensation based on a fiber Bragg grating (FBG) is presented. Changes in the RH are transduced to the FBG properties by an ORMOCER coating. The cross sensitivity to temperature is compensated by inscribing the Bragg grating in a highly birefringent fiber and using the individual Bragg peaks of each polarization direction for separation (discrimination) of temperature and humidity influences.
Keywords :
Bragg gratings; compensation; fibre optic sensors; humidity sensors; ORMOCER coating; cross sensitivity; fiber Bragg grating; fiber-optic relative humidity sensor; thermal compensation; Fiber gratings; Humidity; Optical fiber sensors; Temperature measurement; Temperature sensors; Fiber Bragg grating (FBG) sensor; cross-sensitivity; crosssensitivity; highly birefringent fiber; relative humidity; relative humidity temperature; temperature; thermal compensation;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2015.2444100
