Fig. 1. Dispersion measurement system based on Michelson interferometer. (a) Schematic diagram of measurement system; (b) light source spectrum

Fig. 2. Data processing of Gaussian spectrum. (a) Simulated interferogram with its upper and lower envelopes; (b) normalized interference spectrum and unwrapped phase; (c) reference and calculated GDD values

Fig. 3. Variation of RMSE with time delay and bandwidth factor. (a) Gaussian spectrum; (b) ASE source spectrum

Fig. 4. Data processing of ASE spectrum. (a) Simulated interferogram with its upper and lower envelopes; (b) normalized interference spectrum and unwrapped phase; (c) reference and calculated GDD values

Fig. 5. RMSE varies with delay and bandwidth factor. (a) SF66 sample; (b) F2 sample

Fig. 6. Fourier transform images of interference spectra and Fourier transform images after removing background light. (a)(c) Fourier transform images of interference spectra; (b)(d) Fourier transform images after removing background light

Fig. 7. Measurement results of SF66 and F2 samples. (a)(c) Interference spectra with upper and lower envelopes; (b)(d) measured and reference GDD values