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

Optics Letters, ISSN: 1539-4794, Vol: 46, Issue: 19, Page: 4825-4827
2021
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Article Description

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 dB level. For the wavelength-shift mode, a maximum wavelength shift of 0.6 nm can be achieved.

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