B6.3 - Field Guide to Nonlinear Calibration of Fiber Bragg Gratings for Temperature Sensors with a Wide Temperature Range
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings Sensor 2017
- B6 - Distributed and Fiber Bragg Grating Sending I
- T. Ringel, T. Bosselmann - Siemens AG, Erlangen (Germany)
- 267 - 270
This paper presents a field guide to nonlinear calibration of Fiber Bragg Gratings (FBG1,2) for temperature sensors with a wide temperature range. An FBG which is used for a wide temperature range needs an expensive calibration curve measured for this particular FBG to enable the calculation of the temperature from the measured wavelengths. We show here that it is possible to get the calibration curve for any FBG out of the measurement of a few FBGs and an inexpensive measurement of the wavelength of this FBG e.g. at 0°C. Zero degree is preferred because that can be produced by ice water, for other temperatures a calibration oven is needed.