The performance of multimode interference (MMI) couplers in silicon waveguides is limited
by the high lateral refractive index contrast. Here we propose the use of subwavelength …

We report multimode-interference (MMI)-based crossings in high-index-contrast silicon wire
waveguides. Our experiments show an MMI crossing of~ 0.4-dB insertion loss, which …

We investigate the loss mechanism in three-moded multimode-interference couplers that are
the building blocks of a compact and low-loss waveguide crossing structure. Broadband …

In this work, we proposed and experimentally demonstrated a compact and low polarization-
dependent silicon waveguide crossing based on subwavelength grating multimode …

Single mode silicon-on-insulator rib waveguides offer a weak lateral confinement, which
makes it difficult to design high-performance multimode interference couplers (MMIs) based …

We propose a multimode interference coupler (MMI) design for high-index-contrast
technologies based on a shallowly etched multimode region, which is, for the first time to our …

Multimode interference couplers (MMIs) are fundamental building blocks in photonic
integrated circuits. Here it is experimentally demonstrated, for the first time, a two‐fold length …

A waveguide crossing based on multi-mode interference is designed and experimentally
characterized on the silicon platform. The insertion loss of the device is measured as 43±4 …

We present the design, fabrication, and measurement of a compact and low-loss multimode
interference (MMI) coupler based on the silicon nanowire waveguide. The device is carefully …

A polarization-insensitive waveguide crossing based on multimode interference (MMI)
couplers is proposed and demonstrated on a silicon-on-insulator (SOI) platform. By utilizing …