Enhanced Strain Measurement Sensitivity with Gold Nanoparticle-Doped Distributed Optical Fibre Sensing

Figure 3

A case of the spectra of the random distribution of NPs in the optical fibre with a gauge length of 0.3207 cm for strain at −1200 . (a) The original spectrum and spectrum under strain. (b) The results of the spectra with Fourier transform. The black arrows show the spectral shift directions under −1200 . (c) The spectra modulated by the proposed method. (d) The results of the modulated spectra with Fourier transform. The black arrows show the spectral shift directions under −1200  [45].

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