A method forms a vertical output coupler for a waveguide that propagates light along a
horizontal propagation direction, through a waveguide material that overlies a buried oxide …

A method forms a vertical output coupler for a waveguide, formed of waveguide material and
disposed within a layer stack on a top surface of a wafer. The method includes etching …

BACKGROUND Silicon photonics is often considered one of the most popu lar and
Successful technology platforms based on planar pho tonics circuits for cost effective …

A waveguide mode expander couples a smaller optical mode in a semiconductor
waveguide to a larger optical mode in an optical fiber. The waveguide mode expander …

A method of fabricating a waveguide mode expander includes providing a substrate
including a waveguide, bonding a chiplet including multiple optical material layers in a …

An optical filter for attenuating higher-order modes in an optical waveguide includes a
shoulder slab formed of a first material having a first index of refraction and disposed on a …

An optical element device comprises an optical element and an optical path transforming
structure for changing a light proceeding direction in order to couple light with the optical …

Methods and systems are presented for heterogeneous inte gration of photonics and
electronics with atomic layer deposition (ALD) bonding. One method includes operations for …

A waveguide mode expander couples a smaller optical mode in a semiconductor
waveguide to a larger optical mode in an optical fiber. The waveguide mode expander …

A device is provided for optical mode spot size conversion to optically couple a
semiconductor waveguide with an optical fiber. The device includes a waveguide …