In the late nineteenth century, Heinrich Hertz demonstrated that the electromagnetic
properties of materials are intimately related to their structure at the subwavelength scale by …

Silicon photonics is an enabling technology that provides integrated photonic devices and
systems with low-cost mass manufacturing capability. It has attracted increasing attention in …

Segmenting silicon waveguides at the subwavelength scale produce an equivalent
homogenous material. The geometry of the waveguide segments provides precise control …

Waves that are perfectly confined in the continuous spectrum of radiating waves without
interaction with them are known as bound states in the continuum (BICs). Despite recent …

Nanophotonic devices have enabled microscopic control of light with an unprecedented
spatial resolution by employing subwavelength optical elements that can strongly interact …

We propose and experimentally demonstrate a novel multimode ultra-compact mode (de)
multiplexer for highly integrated on-chip mode-division multiplexing systems. This device is …

On-chip mode-manipulation is one of the most important physical fundamentals for many
photonic integrated devices and circuits. In the past years, great progresses have been …

This paper presents a comprehensive review of the literature and trends on the design of
periodic microstructural composite materials including photonic crystals (PtCs), phononic …

Photonic bound states in the continuum (BICs) have recently been studied in various
systems and have found wide applications in sensors, lasers, and filters. Applying BICs in …

A high-efficiency inverse design of “digital” subwavelength nanophotonic devices using the
adjoint method is proposed. We design a single-mode 3 dB power divider and a dual-mode …