Journal
ELECTRONICS LETTERS
Volume 47, Issue 12, Pages 714-716Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el.2011.0867
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A report is presented on the interesting bending effect of cladding mode resonances in fibre Bragg gratings (FBGs). It is observed that a serial of new cladding mode resonances can arise under bending and the new and the original cladding mode resonances have opposite trends in amplitude change and wavelength shift when the curvature varies. The discovery provides an effective new way to discriminate between bend and strain or bend and temperature when using only a single uniform FBG.
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