Silicon photonics has developed into a mainstream technology driven by advances in
optical communications. The current generation has led to a proliferation of integrated …

Numerous modern technologies are reliant on the low-phase noise and exquisite timing
stability of microwave signals. Substantial progress has been made in the field of microwave …

Optical frequency-comb sources, which emit perfectly periodic and coherent waveforms of
light, have recently rapidly progressed towards chip-scale integrated solutions. Among them …

The development of photonic integrated circuits has historically been driven by
communications. However, emerging markets and opportunities require platforms that can …

High-Q microresonators are indispensable components of photonic integrated circuits and
offer several useful operational modes. However, these modes cannot be reconfigured after …

Erbium-doped fibre lasers exhibit high coherence and low noise as required for fibre-optic
sensing, gyroscopes, LiDAR and optical frequency metrology. Endowing erbium-based gain …

Visible, high-coherence optical sources are important to a wide range of applications
spanning spectroscopy to precision timing. Integration of these sources on a semiconductor …

Optical resonators are indispensable tools in optical metrology that usually benefit from an
evacuated and highly-isolated environment to achieve peak performance. Even in the more …

Optical microcomb underpins a wide range of applications from communication, metrology,
to sensing. Although extensively explored in recent years, challenges remain in key aspects …

Controlling topological phases of light allows the observation of abundant topological
phenomena and the development of robust photonic devices. The prospect of more …