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Spectral shaping of fiber Bragg gratings based on non-rigid origami

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Abstract

We present a spectrum-tunable fiber Bragg grating (FBG) based on a unique compress-twist deformation mode of non-rigid origami. By applying axial displacement on the FBG-bonded Kresling-ori, a non-uniform strain field emerges. The mechanics-induced non-uniform strain can shift the wavelength of an apodized unchirped FBG and/or transform an apodized unchirped FBG to a chirped one. For the spectrum-shaping mode, the bandwidth of the FBG was tuned from 0.32 nm up to 2.9 nm, measured at the ${-}{6}\;{\rm dB}$ level. For the wavelength-shift mode, a maximum wavelength shift of 0.6 nm can be achieved.

© 2021 Optical Society of America

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Supplementary Material (1)

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Supplement 1       fSupplementary material.

Data availability

Data underlying the results presented in this Letter are not publicly available at this time but may be obtained from the authors upon reasonable request.

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