Single-frequency ultranarrow linewidth on-chip microlasers with a fast wavelength tunability
play a game-changing role in a broad spectrum of applications ranging from coherent …

High-speed actuation of laser frequency is critical in applications using lasers and frequency
combs,, and is a prerequisite for phase locking, frequency stabilization and stability transfer …

Fibre and bulk optical isolators are widely used to stabilize laser cavities by preventing
unwanted feedback. However, their integrated counterparts have been slow to be adopted …

Thin-film lithium niobate (LN) photonic integrated circuits (PICs) could enable ultrahigh
performance in electro-optic and nonlinear optical devices. To date, realizations have been …

Photonic integrated circuits (PICs) based on lithographically patterned waveguides provide
a scalable approach for manipulating photonic bits, enabling seminal demonstrations of a …

Microwave signal filtering is a fundamental and central functionality in radio-frequency (RF)
systems. Underpinned by advanced integrated photonics technologies, emerging integrated …

Lithium niobate (LN) thin film has received much attention as an integrated photonic
platform, due to its rich and great photoelectric characteristics, based on which various …

Integrated circuits (ICs) and optoelectronic chips are the foundation stones of the modern
information society. The IC industry has been driven by the so-called “Moore's law” in the …

Soliton microcombs constitute chip-scale optical frequency combs, and have the potential to
impact a myriad of applications from frequency synthesis and telecommunications to …

Boosting second-order optical nonlinear frequency conversion over subwavelength
thickness has long been pursued through optical resonance in micro-and nanophotonics …