Patent · US Expired

Method and device for variable optical attenuator

US6897995B2 · kind B2 · utility

5Cited by

14References

14Claims

0Family size

Assignee

Photonyx AS · NO

Inventors

Anders Malthe-Sørenssen · Oslo, NO
Even Zimmer · Horten, NO
Trond Natestad · Nykirke, NO
Bengt Jacobson · Mölnlycke, SE

Key dates

Filing date	Sep 5, 2003
Grant date	May 24, 2005
Priority date	—
Expiry date	Sep 5, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/48
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A variable optical modulator for optical communication systems using a tunable dynamic grating comprises a gel or membrane layer attached adjacent to a prism communicating light to/from the optical communication system. A substrate has a plurality of individually addressable electrodes and drive means for providing regulated excitation voltage to each of the plurality of electrodes, thereby generating a wave pattern on a surface of the gel or membrane superimposed on an initial state of the gel or membrane layer.

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