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 …

High-index contrast silicon waveguides exhibit strong birefringence that hinders the
development of polarization-insensitive devices, especially for sub-micrometer silicon layer …

Many applications, including optical multiplexing, switching, and detection, call for low-cost
and broadband photonic devices with polarization-independent operation. While the silicon …

We propose two designs of low-loss and temperature-insensitive single-mode waveguide
crossing on silicon-on-insulator (SOI) platform with 415-nm operation bandwidth covering all …

With the concept of metamaterials introduced into integrated photonics, subwavelength
structures have gained popularity for their ability to create devices with ultra-compact size …

Compact fiber-to-chip light coupling with low loss and large bandwidth, SMF-to-chip edge
coupler in particular, is extensively demanded in integrated photonics. The inescapable …

Efficient fiber-chip coupling interfaces are critically important for integrated photonics. Since
surface gratings diffract optical signals vertically out of the chip, these couplers can be …

Silicon nitride (Si3N4) is an ideal candidate for the development of low-loss photonic
integrated circuits. However, efficient light coupling between standard optical fibers and …

In this paper, a novel multimode waveguide implemented on a silicon‐on‐insulator (SOI)
platform that supports several transverse (TE)/transverse magnetic (TM) modes across a …

The polarization beam splitter (PBS) is an essential component in the polarization diversity
circuit to overcome the strong polarization dependence of silicon nanophotonic devices …