Global Patent Index - EP 1240547 A2

EP 1240547 A2 2002-09-18 - OPTICAL SWITCHING DEVICE

Title (en)

OPTICAL SWITCHING DEVICE

Title (de)

OPTISCHE SCHALTVORRICHTUNG

Title (fr)

DISPOSITIF DE COMMUTATION OPTIQUE

Publication

EP 1240547 A2 (EN)

Application

EP 00989852 A

Priority

  • EP 00989852 A
  • EP 0011129 W
  • EP 99123328 A
  • US 16791299 P

Abstract (en)

[origin: WO0138934A2] A digital optical switching device (1) has a longitudinal axis (9) and comprises a substrate (2); a first, a second and a third waveguide (3-5), connected by a connecting waveguide (10), the second and third waveguides (4, 5) having a first and second refractive index respectively, and forming two alternative branches for carrying the light from and/or towards the connecting waveguide; electrodes (6-8) associated with at least one of the second and third waveguides (4, 5) and capable of forming an electrical field region in which at least one of the first and second refractive indices can be varied as a function of a potential difference applied to the electrodes; and in which there is a first longitudinal region (I) in which the connecting waveguide (10) forms a first angle ( theta 1), a second longitudinal region (II) consisting of a first longitudinal area (II-A), in which the second and third waveguides (4, 5) comprise respective first sections (4a, 5a) forming between them a second angle ( theta 2) which is different from the first angle ( theta 1), and a second longitudinal area (II-B) in which the second and third waveguides (4, 5) comprise respective second sections (4b, 5b) forming between them a third angle ( theta 3) which is different from the second angle ( theta 2).

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

G02F 1/313

IPC 8 full level (invention and additional information)

G02F 1/313 (2006.01)

CPC (invention and additional information)

G02F 1/3137 (2013.01)

Citation (search report)

See references of WO 0138934A3

Designated contracting state (EPC)

AT BE CH CY DE FR GB IT LI

EPO simple patent family

WO 0138934 A2 20010531; WO 0138934 A3 20011108; AU 2666401 A 20010604; EP 1240547 A2 20020918

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT BE CH CY DE FR GB IT LI

2003-09-10 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030204

2002-12-11 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021024

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020621

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI