Patent · US Active

Photodetector including multiple waveguides

US7851782B2 · kind B2 · utility

3Cited by

7References

19Claims

0Family size

Assignee

UCL BUSINESS PLC · GB

Inventors

Alwyn John Seeds · London, GB
Cyril Renaud · London, GB
Michael Robertson · Ipswich, GB

Key dates

Filing date	Mar 30, 2007
Grant date	Dec 14, 2010
Priority date	—
Expiry date	Mar 30, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/544
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An example photodetector includes a waveguide structure having an active waveguide comprising an absorber for converting photons conveying an optical signal into charge carriers conveying a corresponding electrical signal; a carrier collection layer for transporting the charge carriers conveying the electrical signal; and a secondary waveguide immediately adjacent to the carrier collection layer, for receiving the photons to be detected, and which is evanescently coupled to the active waveguide.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.