An optoelectronic device and method of making the same. The device comprising: a
substrate; an epitaxial crystalline cladding layer, on top of the substrate; and an optically …

A Mach-Zehnder waveguide modulator. In some embodiments, the Mach-Zehnder
waveguide modulator includes a first arm including a first optical waveguide, and a second …

(57) ABSTRACT A waveguide optoelectronic device comprising a rib wave guide region,
and method of manufacturing a rib waveguide region, the rib waveguide region having: a …

A Mach-Zehnder waveguide modulator. In some embodiments, the Mach-Zehnder
waveguide modulator includes a first arm including a first optical waveguide, and a second …

An optoelectronic device. The optoelectronic device operable to provide a PAM-N
modulated output, the device comprising: M optical modulators, M being an integer greater …

G01) 1/04(2006.01)(52) US CI. CPC G02F 1/225 (2013.01); HOIL 21/78 (2013.01); GOIJ
1/0425 (2013.01)(58) Field of Classification Search CPC GO1J 1/0425; GO2B 6/131; GO2B …

Structures for a waveguide and methods of fabricating a structure for a waveguide. A first
layer and a second layer are positioned in a layer stack on a surface of a waveguide core …

A waveguide device and method of doping a waveguide device, the waveguide device
comprising a rib waveguide region, the rib waveguide region having: a base, and a ridge …