Patent · US Active

Low-cost fast variable optical attenuator for optical wavelength tracking

US8326109B2 · kind B2 · utility

0Cited by

2References

23Claims

0Family size

Assignee

Alcatel Lucent · FR

Inventors

Mark P. Earnshaw · Morristown, US
Mahmoud Rasras · Berkeley Heights, US

Key dates

Filing date	Dec 16, 2009
Grant date	Dec 4, 2012
Priority date	—
Expiry date	Oct 2, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/3596
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Variable optical attenuator (VOA) formed by disposing upon a substrate a waveguide, a p-type region and an n-type region about the waveguide, and an epi-silicon region disposed upon the waveguide, the VOA responsive to a bias current to controllably inject carriers into the waveguide to attenuate thereby optical signal propagating through the waveguide.

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