Regenerated gratings in air-hole microstructured fibers for high-temperature pressure sensing
- Publication Type:
- Journal Article
- Citation:
- Optics Letters, 2011, 36 (18), pp. 3542 - 3544
- Issue Date:
- 2011-09-15
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We present thermally regenerated fiber Bragg gratings in air-hole microstructured fibers for high-temperature, hydrostatic pressure measurements. High-temperature stable gratings were regenerated during an 800 °C annealing process from hydrogen-loaded Type I seed gratings. The wavelength shifts and separation of grating peaks were studied as functions of external hydrostatic pressure from 15 to 2400 psi, and temperature from 24 °C to 800 °C. This Letter demonstrates a multiplexible pressure and temperature sensor technology for high-temperature environments using a single optical fiber feedthrough. © 2011 Optical Society of America.
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