Many novel materials and device designs have been proposed as photonic analogs to
electrical diodes over the last four decades. This paper seeks to revisit these materials and …

Silicon waveguide optical non-reciprocal devices based on the magneto-optical effect are
reviewed. The non-reciprocal phase shift caused by the first-order magneto-optical effect is …

Non-reciprocal light propagation is essential to control optical crosstalk and back-scatter in
photonic systems. However, realizing high-fidelity non-reciprocity in low-loss integrated …

Integrated circulators and isolators are important for developing on-chip optical technologies
such as laser cavities, communication systems and quantum information processors. These …

Silicon waveguide optical nonreciprocal devices that use the magneto-optical phase shift
are reviewed. The phase shift caused by the first-order magneto-optical effect is effective in …

We demonstrate a synthetic Hall effect for light, using an acousto-optically modulated
nanophotonic resonator chain. To produce this effect, we simultaneously generate the …

Non-reciprocal optical components such as isolators and circulators are crucial for
preventing catastrophic backreflection and controlling optical cross talk in photonic systems …

Giant enhancement of the magneto-optical Kerr effect (MOKE) by surface plasmon
polaritons (SPPs) is theoretically shown in a trilayer structure consisting of double-layer …

We report on the experimental implementation of topological edge-state arrays with power
confinement in the edge state as high as 29 dB relative to its farthermost channel. Average …

Optical isolators play unique roles in photonic circuits. We have developed an optical
isolator with silicon waveguides, based on a Mach–Zehnder interferometer. The device …