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

Figure 6

The relationship between the reciprocal of spatial frequency and the modified standard deviation of the cross-correlation method. The noise levels are 0%, 10%, 20%, 30%, 40%, and 50%. The spectral wavelength ranges are 10 nm, 20 nm, and 40 nm. The red line shows the linear fitting results [45].