Patent · US Expired

Optical automatic gain control based on stable, non-absorbing optical hard limiters

US6674559B2 · kind B2 · utility

1Cited by

32References

5Claims

0Family size

Assignee

Nortel Networks Limited · CA

Inventors

Erik Johnson · Toronto, CA
Edward Hartley Sargent · Toronto, CA

Key dates

Filing date	Aug 20, 2001
Grant date	Jan 6, 2004
Priority date	—
Expiry date	Aug 20, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH04B10/2942
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Optical automatic gain control (AGC) is accomplished using stable, non-absorbing optical hard limiters and various optical logic gates derived therefrom. The AGC mechanism preserves the ratios between signal levels and provides an adjustable amount of gain.

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