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 …

Achieving monolithic integration of nonreciprocal photonic devices on semiconductor
substrates has been long sought by the photonics research society. One way to achieve this …

We demonstrate electrically driven nonreciprocity on a silicon chip. By achieving an indirect
interband photonic transition, we show that the transmission coefficients between two single …

We report on the design and performance of an on-chip microwave circulator with a widely
(GHz) tunable operation frequency. Nonreciprocity is created with a combination of …

A ring isolator is demonstrated for the first time by directly bonding a cerium-substituted
yttrium iron garnet (Ce: YIG) onto a silicon ring resonator using oxygen plasma enhanced …

In magnonics, a fast-growing branch of wave physics characterized by low energy
consumption, it is highly desirable to create circuit elements useful for wave computing …

Materials with magneto-optic (MO) properties have enabled critical fiber-optic applications
and highly sensitive magnetic field sensors. While traditional MO materials are inorganic in …

We experimentally realize a one-way waveguide made from a gyromagnetic photonic crystal
(GPC) and a normal dielectric photonic crystal in their common photonic band gap. Due to …

Originally discovered in condensed matter systems, topological insulators (TIs) have been
ubiquitously extended to various fields of classical wave physics including photonics …

The nonreciprocal properties of spin waves in metallized one-dimensional bi-component
magnonic crystal composed of two materials with different magnetizations are investigated …