BACKGROUND The generation and control of coherent electromagnetic waves, such as
those provided by electronic oscillators in the radio frequency domain or lasers in the optical …

Optical frequency combs were developed nearly two decades ago to support the world's
most precise atomic clocks. Acting as precision optical synthesizers, frequency combs …

Integrated femtosecond pulse and frequency comb sources are critical components for a
wide range of applications, including optical atomic clocks, microwave photonics …

Modern advanced photonic integrated circuits require dense integration of high-speed
electro-optic functional elements on a compact chip that consumes only moderate power …

As a handicap for passive mode-locked lasers to operate stably for a long time, the
undesirable damage threshold of saturable absorption devices means that it is difficult to …

Frequency combs are optical spectra composed of a set of discrete equally spaced lines.
Such spectra can be generated by diverse sources such as mode-locked lasers, resonators …

The commercial success of radio-frequency acoustic filters in wireless communication
systems has launched aluminum nitride (AlN) as one of the most widely used …

Orbiting planets induce a weak radial velocity (RV) shift in the host star that provides a
powerful method of planet detection. Importantly, the RV technique provides information …

Current fibre optic communication systems owe their high-capacity abilities to the
wavelength-division multiplexing (WDM) technique, which combines data channels running …

Optical frequency combs (OFCs) are a unique kind of light source, which are represented as
a series of equally spaced coherent spectral lines in the frequency domain. OFCs can …