Metasurfaces are subwavelength structured thin films consisting of arrays of units that allow
the control of polarization, phase, and amplitude of light over a subwavelength thickness …

dB couplers, which are commonly used in photonic integrated circuits for on-chip information
processing, precision measurement, and quantum computing, face challenges in achieving …

On-chip generation of optical frequency combs using nonlinear ring resonators has enabled
numerous applications of combs that were otherwise limited to mode-locked lasers …

We present an on-chip filter with a broad tailorable working wavelength and a single-mode
operation. This is realized through the application of topological photonic crystal nanobeam …

Chiral quantum optics and Topological photonics are both emerging field of research, which
have attracted great attention in recent years. Chiral quantum optics provides a new …

The valley contrasting physics in photonic systems gives rise to many interesting
phenomena such as photonic valley Hall effect and robust valley transport. However, most …

A fundamental requirement for photonic technologies is the ability to control the confinement
and propagation of light. Widely utilized platforms include two-dimensional (2D) optical …

Mode tapering, or the gradual manipulation of the size of some mode, is a requirement for
any system that aims to efficiently interface two or more subsystems of different mode sizes …

The integration of topology into photonics has generated a new design framework for
constructing robust and unidirectional waveguides, which are not feasible with traditional …

We design germanium-based higher-order topological cavities for terahertz applications by
breaking the symmetry of a two-dimensional photonic crystal following the Su-Schrieffer …