Long-period fiber gratings with variable coupling for real-time sensing applications
- 15 February 2000
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 25 (4) , 203-205
- https://doi.org/10.1364/ol.25.000203
Abstract
We demonstrate a long-period grating whose resonance varies in strength but remains fixed in wavelength with either temperature or strain. Using this fiber-grating sensor, we resolved a change of of strain or 0.04 °C in temperature. Such sensors require no spectrometer or other frequency-selective components and can operate in real time.
Keywords
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