The authors demonstrate that in-fibre Bragg gratings may be successfully used to measure megahertz acoustic fields if the grating length is sufficiently short and the optical fibre is appropriately desensitised. A noise-limited pressure resolution of 4.5 × 10 –3 atm vHz was found. The capability to simultaneously act as a temperature sensor is also demonstrated.
- in-fibre Bragg gratings
- measure megahertz acoustic fields
- grating length
- optical fibre
- temperature sensor
Fisher, N. E., Webb, D. J., Pannell, C. N., Jackson, D. A., Gavrilov, L. R., Hand, J. W., Zhang, L., & Bennion, I. (1998). Ultrasonic field and temperature sensor based on short in-fibre Bragg gratings. Electronics letters, 34(11), 1139-1140. https://doi.org/10.1049/el:19980795