Global Patent Index - EP 1099319 A1

EP 1099319 A1 2001-05-16 - PHOTONIC INTEGRATED CIRCUIT FOR OPTICAL CDMA

Title (en)

PHOTONIC INTEGRATED CIRCUIT FOR OPTICAL CDMA

Title (de)

PHOTONISCHE INTEGRIERTE SCHALTUNG FÜR OPTISCHES CDMA

Title (fr)

CIRCUIT PHOTONIQUE INTEGRE POUR AMRC OPTIQUE

Publication

EP 1099319 A1 (EN)

Application

EP 00918287 A

Priority

  • US 0007685 W
  • US 13440799 P
  • US 37147699 A

Abstract (en)

[origin: WO0070804A1] An optical CDMA system is implemented at least partially within a photonic integrated circuit. A broad-spectrum light source is modulated with data to be transmitted. The light source is spatially dispersed, for example using a diffraction grating, and passed through a spatial spectrum-coding mask embodied within the photonic integrated circuit. The dispersed frequencies of the encoded modulated light beam are then recombined to provide a modulated, encoded spread spectrum optical signal for injection into an optical fiber or another optical communication system. Received light is split into two components and provided to a pair of complementary decoders. Within each of the complementary encoders, the received portion of the light beam is spatially dispersed and passed through a spatial decoding mask. Both the dispersion element and the mask are embodied within the photonic integrated circuit. One of the decoders includes a spatial decoding mask that embodies the spatial encoding function U of the original transmitting mask and the other, complementary decoder includes a complementary function U*. Within each of the complementary decoders the spatially spread light signals are recombined after passing through the decoding masks. The signals passing through the complementary decoding masks are then provided to different inputs of a differential detector and the data originally modulated within the light is recovered.

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

H04J 13/00

IPC 8 full level (invention and additional information)

H04B 10/04 (2006.01); H04B 1/707 (2006.01); H04B 10/06 (2006.01); H04B 10/10 (2006.01); H04B 10/105 (2006.01); H04B 10/142 (2006.01); H04B 10/152 (2006.01); H04B 10/22 (2006.01); H04J 14/00 (2006.01)

CPC (invention and additional information)

H04J 14/005 (2013.01)

Citation (search report)

See references of WO 0070804A1

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 0070804 A1 20001123; AU 3912100 A 20001205; CA 2338042 A1 20001123; EP 1099319 A1 20010516; JP 2003500894 A 20030107

INPADOC legal status


2003-04-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021001

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010209

2001-05-16 [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

2001-05-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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