Real-time tracking of a waveform frequency content is essential for detection and analysis of
fast rare events in communications, radar, radio astronomy, spectroscopy, sensing etc. This …

Real-time Fourier transformation (RTFT) of signals is a fundamental concept that enables
Fourier analysis at speeds beyond the limitations of conventional digital signal processing …

Interferometers are highly sensitive to phase differences and are utilized in numerous
schemes. Of special interest is the quantum SU (1, 1) interferometer which is able to improve …

The use of stimulated Brillouin scattering (SBS) for microwave photonics frequency
measurement is widely studied because of its unique advantage of high accuracy. However …

Conventional tools for measurement of laser spectra (eg optical spectrum analysers) capture
data averaged over a considerable time period. However, the generation spectrum of many …

Time-frequency duality, which enables the control of optical waveforms by manipulating the
amplitudes and phases of electromagnetic fields, plays a pivotal role in a wide range of …

We demonstrate a novel real-time Fourier transformation scheme with megahertz-level
resolution realized by bandwidth magnification of radio frequency (RF) signals. Before the …

Traditional photonics-assisted real-time Fourier transform (RTFT) usually suffers from limited
chromatic dispersion, huge volume, or large time delay and attendant loss. In this paper we …

Modern networks implement multilayer encryption architecture to increase network security,
stability, and robustness. Encryption on the lower layers is essential for the safety of the …

The whole family of the parametric spectro-temporal analyzer (PASTA) system has enriched
the capability of our tool box in ultrafast spectrum measurements. The advent of the …