Wideband signal detection based on high-speed photonic analog-to-digital converter

作者：Guang Yang , Weiwen Zou *, Ye Yuan, And Jianping Chen
摘要：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.
出版源：Chinese Optics Letters, vol. 16, no. 3, 030601, Mar. 2018.