Global Patent Index - EP 1047974 A1

EP 1047974 A1 2000-11-02 - TUNABLE OPTICAL DEVICE

Title (en)

TUNABLE OPTICAL DEVICE

Title (de)

ABSTIMMBARE OPTISCHE VORRICHTUNG

Title (fr)

DISPOSITIF OPTIQUE ACCORDABLE

Publication

EP 1047974 A1 (EN)

Application

EP 98959051 A

Priority

  • EP 98959051 A
  • EP 97310543 A
  • GB 9803713 W

Abstract (en)

[origin: EP0926536A1] A method of fabricating a tunable optical device, and a device fabricated according to the method, where the tuning means include a liquid crystal material (5) in an enclosed cavity (3) fabricated over an optical element (1), typically a waveguide, and the cavity is created by the removal, through selective etching, of a layer of quaternary indium gallium arsenide phosphide (18) through a slot (8) etched in a layer of indium phosphide (4) formed over the quaternary layer.

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

G02F 1/1333; G02F 1/1339

IPC 8 full level (invention and additional information)

G02F 1/1333 (2006.01); G02F 1/1339 (2006.01); G02F 1/1337 (2006.01)

CPC (invention and additional information)

G02F 1/1326 (2013.01); G02F 1/1339 (2013.01); G02F 1/1337 (2013.01)

Citation (search report)

See references of WO 9934249A1

Designated contracting state (EPC)

DE FR GB IE IT

EPO simple patent family

EP 0926536 A1 19990630; CA 2310811 A1 19990708; EP 1047974 A1 20001102; WO 9934249 A1 19990708; WO 9934249 A8 19990916

INPADOC legal status


2002-10-16 [18R] REFUSED

- Effective date: 20020527

2002-01-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20011204

2001-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000522

2001-01-31 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB IE IT

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IE IT