Waveguide crossings are an essential component for constructing complex and functional
on-chip photonic networks. Polarization-insensitive waveguide crossings are desired …

Silicon photonics is a rapidly maturing platform for optical communication and sensing. As
systems leveraging silicon photonics have grown in size and complexity, so too has the …

In the past decade, there has been tremendous progress in using subwavelength-scale
nanostructures with elaborately designed periodic and disordered photonic materials for …

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

In this paper, wide-bandwidth low cross-talk W1 photonic crystal waveguide intersections
are proposed based on self-collimation effect. The waveguides are realized using a 2D …

For terahertz (THz) integrated systems, an intersection between waveguides is inevitable
and is often accompanied by considerable crosstalk and loss. Here, we propose and …

A polarization beam splitter (PBS) is one of the key components for manipulating different
polarization states in the areas of optical interconnection and communication. In this paper …

Subwavelength grating metamaterial racetrack ring resonator (SGMRTR) increases the
coupling strength between the bus waveguide and the ring resonator and thus better …

We have numerically proposed a compact, broadband, and high-extinction-ratio (ER) TE-
pass polarizer for vertical slot waveguides using a subwavelength grating slot (SWGS) …

In this work, we demonstrate a metamaterial (MM)-based SiN_x–Si interlayer coupler. A
gradient index (GRIN) MM was employed to achieve refractive index matching, balancing …