Chinese Optics Letters, 2018, 16 (3): 030601, Published Online: Jul. 13, 2018
Wideband signal detection based on high-speed photonic analog-to-digital converter Download: 798次
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.
Guang Yang, Weiwen Zou, Ye Yuan, Jianping Chen. Wideband signal detection based on high-speed photonic analog-to-digital converter[J]. Chinese Optics Letters, 2018, 16(3): 030601.