Optical frequency combs offer an unrivalled degree of frequency measurement precision
that underpins the advance of modern technology in both fundamental science and …

Lithium niobate (LN), an outstanding and versatile material, has influenced our daily life for
decades—from enabling high-speed optical communications that form the backbone of the …

Lithium niobate (LiNbO3 or LN) is a well-known multifunctional crystal that has been widely
applied in various areas of photonics, electronics, and optoelectronics. In the past …

Photonics on thin-film lithium niobate (TFLN) has emerged as one of the most pursued
disciplines within integrated optics. Ultracompact and low-loss optical waveguides and …

Crystalline lithium niobate (LN) is an important optical material because of its broad
transmission window that spans from ultraviolet to mid-infrared and its large nonlinear and …

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

Frequency microcombs, alternative to mode-locked laser and fiber combs, enable miniature
rulers of light for applications including precision metrology, molecular fingerprinting and …

Rare‐earth (RE) ion doped crystalline materials have a wide spectrum of applications in
lasers, amplifiers, sensors, as well as classical and quantum information processing. The …

Materials with strong second-order (χ^(2)) optical nonlinearity, especially lithium niobate,
play a critical role in building optical parametric oscillators (OPOs). However, chip-scale …

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