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.

中文翻译：

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基于非刚性折纸的光纤布拉格光栅的光谱整形

我们提出了一种基于非刚性折纸的独特压缩扭曲变形模式的光谱可调光纤布拉格光栅 (FBG)。通过在 FBG 粘合的 Kresling-ori 上施加轴向位移，会出现非均匀应变场。力学引起的非均匀应变可以改变切趾未啁啾FBG 的波长和/或将切趾未啁啾FBG 转换为啁啾FBG。对于频谱整形模式，FBG 的带宽从 0.32 nm 调谐到 2.9 nm，在${-}{6}\;{\rm dB}$级别测量。对于波长偏移模式，可以实现 0.6 nm 的最大波长偏移。