US 2025/0147235 A1 · PHOTODETECTORS WITH A NOTCHED LIGHT-ABSORBING LAYER

Abstract

Structures for a photonics chip that include a photodetector and methods of forming such structures. The structure comprises a photodetector that is disposed on a substrate and that includes a light-absorbing layer. The light-absorbing layer includes a sidewall and a notch in the sidewall. The structure further comprises a waveguide core including a section adjacent to the notch in the sidewall of the light-absorbing layer.

Claims20

Dependent claims

A structure for a photonics chip, the structure comprising:

a substrate;
a photodetector on the substrate, the photodetector including a light-absorbing layer, and the light-absorbing layer including a first sidewall and a first notch in the first sidewall;
and
a first waveguide core including a section adjacent to the first notch in the first sidewall of the light-absorbing layer.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

18/501,602Filed 3 Nov 2023

Published

8 May 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02B 6/12004
Of the integrated circuit kind: combinations of two or more optical elements
G02B 6/1228
Basic optical elements, e.g. light-guiding paths: tapered waveguides, e.g. integrated spot-size transformers
G02B 6/13
Of the integrated circuit kind: integrated optical circuits characterised by the manufacturing method
G02B
Optical elements, systems or apparatus

Photodetectors with a notched light-absorbing layer

Life of this patent

Photodetectors with a notched light-absorbing layer

Life of this patent

Abstract

Claims20