Radio-frequency (RF) waveform synthesis has broad applications in ultrawide-bandwidth
wireless communications, radar systems, and electronic testing. Photonic-based …

The synthesis of ultralow-noise microwaves is of both scientific and technological relevance
for timing, metrology, communications and radio-astronomy. Today, the lowest reported …

Microwave photonic technologies, which upshift the carrier into the optical domain, have
facilitated the generation and processing of ultra-wideband electronic signals at vastly …

We report a photonic-based radio frequency (RF) arbitrary waveform generator (AWG) using
a soliton crystal micro-comb source with a free spectral range (FSR) of 48.9 GHz. The comb …

Supercontinuum generation and soliton microcomb formation both represent key techniques
for the formation of coherent, ultrabroad optical frequency combs, enabling the RF-to-optical …

Ultrabroad-bandwidth radiofrequency pulses offer significant applications potential, such as
increased data transmission rate and multipath tolerance in wireless communications. Such …

Soliton microcombs are a promising new approach for photonic-based microwave signal
synthesis. To date, however, the tuning rate has been limited in microcombs. Here, we …

Microresonator soliton frequency combs offer unique flexibility in synthesizing microwaves
over a wide range of frequencies, while their phase noise is currently limited by thermal …

Self-referencing turns pulsed laser systems into self-referenced frequency combs. Such
frequency combs allow counting of optical frequencies and have a wide range of …

With optical spectral marks equally spaced by a frequency in the microwave or the radio
frequency domain, optical frequency combs have been used not only to synthesize optical …