Structures for a phase shifter

A structure comprising:

• a phase shifter including a first section, a second section, and a plurality of strips laterally between the first section and the second section;
• a waveguide core including a portion laterally between the first section and the second section, the plurality of strips surrounding the portion of the waveguide core;
• and
• a dielectric layer between the waveguide core and the phase shifter,
• wherein the plurality of strips, the first section, and the second section comprise a semiconductor material, and the waveguide core comprises a dielectric material.

A method comprising:

• forming a phase shifter including a first section, a second section, and a strip laterally between the first section and the second section;
• forming a waveguide core including a portion laterally between the first section and the second section;
• and
• wherein the strip is laterally offset relative to the portion of the waveguide core toward the first section, a dielectric layer is positioned between the waveguide core and the phase shifter, the strip, the first section, and the second section comprise a semiconductor material, and the waveguide core comprises a dielectric material.