Draw tower furnace diagnostics applying a sapphire fiber Bragg grating probe

Tino Elsmann; Adrian Lorenz; Kerstin Schröder; Tobias Habisreuther

doi:10.1117/12.2679822

23 May 2023 Draw tower furnace diagnostics applying a sapphire fiber Bragg grating probe

Tino Elsmann, Adrian Lorenz, Kerstin Schröder, Tobias Habisreuther

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126432T (2023) https://doi.org/10.1117/12.2679822
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

Sapphire fiber Bragg gratings (SFBG) were used for temperature diagnosis of a commercial inductive heated furnace of a fiber draw tower. In a fiber preform temperature gradients > 10K/mm were detected. In the temperature range from 1000°C to 1900°C the measured temperature inside the furnace is about 140K below the control temperature detected by a pyrometer on a spot of the heating element. The dependence of applied temperature on the furnace heating power was derived that can allow furnace control without pyrometer and therefore extending operation range below 1000°C. No degradation of SFBG was observed.

Citation Download Citation

Tino Elsmann, Adrian Lorenz, Kerstin Schröder, and Tobias Habisreuther "Draw tower furnace diagnostics applying a sapphire fiber Bragg grating probe", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126432T (23 May 2023); https://doi.org/10.1117/12.2679822

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