Global Patent Index - EP 1060427 A1

EP 1060427 A1 2000-12-20 - COMPOSITE DIFFRACTION GRATINGS FOR SIGNAL PROCESSING AND OPTICAL CONTROL APPLICATIONS

Title (en)

COMPOSITE DIFFRACTION GRATINGS FOR SIGNAL PROCESSING AND OPTICAL CONTROL APPLICATIONS

Title (de)

Zusammengesetzte Beugungsgitter für anwendungen der Signalverarbeitung und optischer Regelung

Title (fr)

GRILLES DE DIFFRACTION COMPOSITES POUR TRAITEMENT DE SIGNAUX ET APPLICATIONS DE GUIDES OPTIQUES

Publication

EP 1060427 A1 (EN)

Application

EP 99901373 A

Priority

  • US 9900425 W
  • US 7068498 P

Abstract (en)

[origin: WO9935523A1] The present invention provides a composite grating structure that performs a programmed complex-valued, spectral filtering function on an input optical signal. The grating consists of a plurality of subgratings. Each subgrating controls the diffraction of a specific optical subbandwidth of light from an operative input direction to an operative output direction imparting a controllable amplitude and phase change onto the specific subbandwidth of light whose diffraction it controls within the overall operative bandwidth. The set of subgratings comprising the composite grating collectively controls the diffraction of an operative bandwidth of light from an operative input direction to an operative output direction. Each composite grating is programmed through their construction or through their dynamic modification to provide desired spectral filtering functions. While the composite gratings can be employed for general spectral filtering applications, they hold especially attractive potential in the area of optical waveform processing, generation, and detection.

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

G02B 6/34; G02B 27/46; H04J 14/00

IPC 8 full level (invention and additional information)

G02B 6/122 (2006.01); G02B 5/18 (2006.01); G02B 6/02 (2006.01); G02B 6/34 (2006.01); G06K 9/74 (2006.01); H04J 14/00 (2006.01); G02B 6/12 (2006.01)

CPC (invention and additional information)

G06K 9/745 (2013.01); G02B 5/1819 (2013.01); G02B 6/29311 (2013.01); H04J 14/005 (2013.01); G02B 2006/12107 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9935523 A1 19990715; WO 9935523 A8 19990916; CA 2317784 A1 19990715; EP 1060427 A1 20001220; EP 1060427 A4 20060125; JP 2002501213 A 20020115

INPADOC legal status


2008-01-23 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20070801

2006-01-25 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20051209

2006-01-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G02B 6/34 19850101AFI19990729BHEP

2006-01-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G02B 27/46 19800101ALI20051205BHEP

2006-01-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: H04J 14/00 19900101ALI20051205BHEP

2000-12-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000803

2000-12-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE