Frequency-modulated continuous-wave light detection and ranging (FMCW lidar) is a powerful high-precision ranging and three-dimensional (3D) imaging technology with inherent immunity to ambient light and the ability to simultaneou

Recording and identifying faint objects through atmospheric scattering media by an optical system are fundamentally interesting and technologically important. We introduce a comprehensive model that incorporates contributions from

Integrated electro-optic tuning devices are essential parts of optical communication, sensors, and optical machine learning. Among the available materials, silicon is the most promising for on-chip signal processing and networks.

Optical reservoir computing (ORC) offers advantages, such as high computational speed, low power consumption, and high training speed, so it has become a competitive candidate for time series analysis in recent years. The current

Distributed fiber-optic sensing (DFOS) can turn the worldwide fiber network into a sensing array, which may immensely extend the sensing range and approaches for hazard assessment, earth observation, and human activity measurement

Unidirectional imagers form images of input objects only in one direction, e.g., from field-of-view (FOV) A to FOV B, while blocking the image formation in the reverse direction, from FOV B to FOV A. Here, we report unidirectional

Thin-film lithium niobate (LN) has emerged as an ideal platform for efficient nonlinear wave-mixing processes due to its strong quadratic nonlinearity and high optical confinement. We demonstrate unprecedentedly efficient second-h

Efficiently tracking and imaging interested moving targets is crucial across various applications, from autonomous systems to surveillance. However, persistent challenges remain in various fields, including environmental intricaci

The microring resonator (MRR) plays an important role in signal processing because high-quality bandpass filtering can be obtained at its drop port. To promote the signal-to-noise ratio, a high rejection ratio is significantly dem

The mode sorter is the crucial component of the communication systems based on orbital angular momentum (OAM). However, schemes proposed so far can only effectively sort integer OAM (IOAM) modes. Here, we demonstrate the effective

Many technologies, including dot projectors and lidar systems, benefit greatly from using polarized illumination. However, conventional polarizers and polarizing beam splitters have a fundamental limit of 50% efficiency when conve

The physical mechanism of gain motivation is the main theoretical bottleneck that restricts the signal-to-noise ratio (SNR) and results in a mono-merit implementation for the existing stimulated Brillouin scattering-based fiber se

In the field of short-range optical interconnects, the development of low-power-consumption, ultrawideband on-chip optical waveguide amplifiers is of critical importance. Central to this advancement is the creation of host materia

Spectroscopy, especially for plasma spectroscopy, provides a powerful platform for biological and material analysis with its elemental and molecular fingerprinting capability. Artificial intelligence (AI) has the tremendous potent