Progress in Photonic Sampled Analog-to-Digital Conversion

Dynamic range enhancement of photonic sampling based on chirp management in cavity-less optical pulse source

“…Thus, the photonic ADC is regarded as the most promising candidate to break through the electronic bottleneck and enhance the performance of electronic ADCs. Thereinto, photonic sampling ADCs can achieve direct digitization of a high-frequency radio-frequency (RF) signal and have been intensively researched in recent years [3][4][5][6][7] . In the photonic sampling ADCs, ultra-short optical pulse sources with high repetition frequencies are commonly used to sample the input analog signals in the optical domain, while the quantization and coding are still implemented by high-precision electronic ADCs with relatively low speed [8] .…”