Mode-division multiplexing (MDM) can greatly improve the capacity of information
transmission. The multimode waveguide bend (MWB) with small size and high performance …

An ultra-compact multimode wavelength demultiplexer (MWD) with a footprint of 3.6× 2.4 μm
2 was designed. Its size is approximately two orders of magnitude smaller than the size of …

Multi-mode converters, which can achieve spatial mode conversion in multimode
waveguide, play a key role in multi-mode photonics and mode-division multiplexing (MDM) …

Mode-division-multiplexing technology is highly attractive to increase the capacity of optical
interconnects. Various multimode operations have been investigated, among which optical …

Lithium niobate on insulator (LNOI) is a promising platform for realizing high‐performance
photonic integrated circuits (PICs) for communication applications due to LN's excellent …

Waveguide bend is an indispensable component in the on-chip compact photonic integrated
circuits (PICs) and the minimum bend size greatly limits the increase of integration density of …

Mode-division multiplexing (MDM) is an effective solution to extend the capacity of optical
communication system. Multimode waveguide bend (MWB), one of the key components, is …

In this work, an ultra-sharp multimode waveguide bend (MWB) based on gradient shallowly
etched grooves is proposed and demonstrated. With a bending radius of only 5.6 μm, our …

Optical power splitters are fundamental devices in on-chip optical systems, enabling
coherent optical modulation through beam splitting and combining. Despite many mature …

Ultra-longitudinal-compact S-bends with flexible latitudinal distances (d) are proposed and
experimentally demonstrated with ultralow loss and fabrication-friendly structures by three …