Abstract

Waveguide bends may be employed on a photonics chip to change the propagation direction of optical signals propagating in a waveguide core. Bending losses from inter-modal mixing and interference are an ubiquitous problem in multimode waveguide bends and may perturb the fundamental mode of the optical signal. Bending losses may be minimized by fabricating a waveguide bend with a large bending radius ranging from hundreds of microns to a millimeter or larger. However, the large size of such waveguide bends reduces the available space on the photonics chip for other optical and electronic components.
a structure in an embodiment of the invention, includes a waveguide core having a first section, a second section, and a waveguide bend connecting the first section with the second section.

Date

March 15, 2022

Authors

Y Bian, AP Jacob

Inventors

Yusheng Bian, Ajey Poovannummoottil Jacob

Patent_office

US

Patent_number

11275207

Application_number

16989214