Improved KLT Algorithm for High-Precision Wavelength Tracking of Optical Fiber Bragg Grating Sensors

Figure 7

Wavelength detection accuracy (99% interval of confidence) as a function of SNR. Data are reported for different values of coefficients: 0.3, 1, 3, and 5 (corresponding to peak reflectivity 8.4%, 58.0%, 99.0%, and 99.98%).