Global patent index - EP 1000478 A1

EP 1000478 A1 2000-05-17 - OPTICAL DATA PROCESSING USING ELECTROABSORPTION MODULATORS

Title (en)

OPTICAL DATA PROCESSING USING ELECTROABSORPTION MODULATORS

Title (de)

OPTISCHE DATENVERARBEITUNG MIT ELEKTROABSORPTION-MODULATOREN

Title (fr)

TRAITEMENT DE DONNEES OPTIQUES A L'AIDE DE MODULATEURS D'ABSORPTION

Publication

EP 1000478 A1 (EN)

Application

EP 98935210 A

Priority

  • GB 9802212 W
  • GB 9715936 A

Abstract (en)

[origin: WO9905812A1] A method of processing an optical data stream modulated with a return to zero formatis described which comprises splitting the optical data stream into first and second data streams; coupling the first data stream into a first input port of an electroabsorption modulator (EAM); processing the first data stream in the EAM; coupling the processed first data stream out of a first output port of the EAM; coupling the second data stream into a second input port of the EAM; and processing the second data stream in the EAM. OTDM transmission systems and nodes for such systems are described in which an electroabsorption modulator is used as a gating element for optical data passing in opposite directions through the modulator. Demultiplexing, Drop and Insert, clock extraction/synchronization are all suggested as options for the process accomplished by the modulator.

IPC 1-7 (main, further and additional classification)

H04J 14/08

IPC 8 full level (invention and additional information)

H04J 14/08 (2006.01)

CPC (invention and additional information)

H04J 14/08 (2013.01); H04J 14/083 (2013.01)

Citation (search report)

See references of WO 9905812A1

Designated contracting state (EPC)

CH DE ES FR GB IT LI

EPO simple patent family

WO 9905812 A1 19990204; AU 8455898 A 19990216; CA 2295825 A1 19990204; EP 1000478 A1 20000517; GB 9715936 D0 19971001

INPADOC legal status

2004-05-19 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20031112

2003-08-13 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030701

2000-05-17 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000106

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE ES FR GB IT LI