The Maxwell's fisheye (MFE) lens, due to its focusing properties, is an interesting candidate
for implementing the crossing of multiple waveguides. The MFE lens is implemented by two …

On‐chip multimode transmission has drawn tremendous interest for its ability to expand the
link capacity with a single wavelength carrier. The waveguide crossing is a basic component …

Multimode waveguide crossings are crucial components for novel mode-division-
multiplexing systems. One of the challenges of multimode waveguide routing in MDM …

Mode-division multiplexing (MDM) is an emerging large-capacity data communication
technology utilizing orthogonal guiding modes as independent data streams. One of the …

The absolute instruments like the Maxwell's fisheye (MFE) lens with aberration-free imaging
properties have found interesting applications such as waveguide crossing. The flat …

The number of waveguides crossing an intersection increases with the development of
complex photonic integrated circuits. Numerical simulations are presented to demonstrate …

The imaging properties of the Maxwell's fisheye (MFE) lens makes it a viable candidate to
implement power coupling between different types of waveguides. A coupler based on the …

Different material platforms, each offering a set of unique advantages, have been introduced
for photonic integrated circuits. These platforms may be used in the same photonic chip to …

We investigate a multilayer vertical stacking scheme for use in the Silicon Nitride-based low-
loss waveguide platform. In this letter, we use common fabrication techniques to produce …

A novel optical waveguide, consisting of a thin high-index coating boxing a low-index inner
material, is presented. Details on waveguide design, fabrication and experimental results …