4.7 Article

Novel Fiber-Optic Relative Humidity Sensor With Thermal Compensation

Journal

IEEE SENSORS JOURNAL
Volume 15, Issue 10, Pages 5450-5454

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2015.2444100

Keywords

Fiber Bragg grating (FBG) sensor; cross-sensitivity; highly birefringent fiber; relative humidity; temperature; thermal compensation

Funding

  1. Slovak Research and Development Agency [APVV006211]
  2. European Union through the Operational Program Research and Development for Innovation within the University Centre for Energy Efficient Buildings [CZ.1.05/2.1.00/03.0091]
  3. European Social Fund through the Support of InterSectoral Mobility and Quality Enhancement of Research Teams, Czech Technical University, in Prague [CZ.1.07/2.3.00/30.0034]

Ask authors/readers for more resources

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.

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