Abstract
A sensor for high-frequency measurement of gas temperature has been developed: the sensing element is a very short length (40 µm) optical fibre Fabry-Perot interferometer, fabricated using a technique based on fusion of optical fibres coated with titanium dioxide to form partially reflective splices. The interferometer is thermally sensitive and small in size. Thermal response is demonstrated experimentally to 3 kHz in vortex shedding from a heated wire in air flow. The observed sensitivity is in agreement with heat transfer and aerodynamic modelling of the sensor and with the thermo-optic coefficient of the fibre core.
| Original language | English |
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| Pages (from-to) | 816-822 |
| Number of pages | 7 |
| Journal | Measurement Science and Technology |
| Volume | 5 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 1994 |