Brush block copolymers are a class of comb polymers that feature polymeric side chains
densely grafted to a linear backbone. These polymers display interesting properties due to …

The field of photonic crystals has, over the past few years, received dramatically increased
attention. Photonic crystals are artificially engineered structures that exhibit a periodic …

Photonic Crystals Page 1 Gong | Hu Photonic Crystals Qihuang Gong **aoyong Hu Page 2
PHOTONIC CRYSTALS Page 3 Page 4 Qihuang Gong | **aoyong Hu PHOTONIC …

We demonstrate, in both theory and experiment, 4-port, electrically tunable photonic filters
using silicon contra-directional couplers (contra-DCs) with uniform and phase-shifted …

Many optical systems require broadband filters with sharp roll-offs for efficiently splitting or
combining light across wide spectra. While free space dichroic filters can provide broadband …

The ultrafast absorption dynamics of photonic modes and enhanced features of electronic
states have been demonstrated in a barium titanate (BaTiO3, BTO)-embedded one …

Topological and non‐Hermitian physics provide powerful tools for manipulating light in
different ways. Recently, intense studies have converged on the interplay between topology …

In this paper, we present an overview of milestone achievements in the research and
development of photonic crystal structures and their perspective applications. We highlight …

The optical properties of slab-like photonic crystals are often discussed on the basis of
effective index (EI) approximations, where a 2-D effective refractive index profile replaces …

We present an on-chip filter that is based on the grating-assisted contra-directional coupler
(GACDC) implemented on a silicon nitride rib waveguide platform. This filter enjoys the …