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Helical-structure sampled Bragg grating fabricated by femtosecond laser

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Abstract

We demonstrate the fabrication of a novel helical-structure sampled fiber Bragg grating (HSFBG) by using femtosecond laser. The fabricated HSFBGs show comb-like spectra over 200 nm wavelength range. It is much wider than traditional sampled fiber Bragg gratings.

© 2021 The Author(s)

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