| Abstract: | This Letter demonstrates the effectiveness of a high-speed high-resolution photonic analog-to-digital converter(PADC) for wideband signal detection. The PADC system is seeded by a high-speed actively mode locked laser,and the sampling rate is multiplied via a time-wavelength interleaving scheme. According to the laboratory test,an X-band linear frequency modulation signal is detected and digitized by the PADC system. The channel mismatch effect in wideband signal detection is compensated via an algorithm based on a short-time Fourier transform. Consequently, the signal-to-distortion ratio(SDR) of the wideband signal detection is enhanced to the comparable SDR of the single-tone signal detection. |
