Fig. 1. Schematic experimental configuration for the group-delay dispersion measurement of optical fibers via fingerprint-spectral wavelength-to-time mapping.

Fig. 2. (a) Wavelength spectrum of input pulses into the test fiber. (b) Time waveform of the input pulses corresponding to an impulsive time response of the measurement system. The inset figure shows autocorrelation traces of the input pulses. The blue curve is a measured trace, whereas the red curve is the squared magnitude of the inverse Fourier transformation of the input power spectrum shown in (a).

Fig. 3. (a) Wavelength spectrum of output pulses from the test fiber. (b) Time waveform of the output pulse. The black sticks indicate peak and nadir positions.

Fig. 4. Fitting result of the least-squares method. The blue curve is a deconvolved waveform of the output waveform in Fig. 3(b) and the system response function in Fig. 2(b). The red curve is a model function calculated from the output spectrum in Fig. 3(a) and a chromatic-dispersion model.

Table 1. Group-Delay Dispersion per Unit Length of SMF-28e+ at 1550 nm