EP 1099319 A1 20010516 - 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
Application
Priority
- US 0007685 W 20000322
- US 13440799 P 19990517
- US 37147699 A 19990810
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
IPC 8 full level
H04B 1/69 (2011.01); H04B 1/707 (2011.01); H04B 10/04 (2006.01); H04B 10/06 (2006.01); H04B 10/10 (2006.01); H04B 10/105 (2006.01); H04B 10/11 (2013.01); H04B 10/118 (2013.01); H04B 10/142 (2006.01); H04B 10/152 (2006.01); H04B 10/22 (2006.01); H04B 10/516 (2013.01); H04B 10/61 (2013.01); H04J 13/00 (2011.01); H04J 14/00 (2006.01)
CPC (source: EP KR)
H04B 10/00 (2013.01 - KR); H04B 10/25 (2013.01 - KR); H04J 14/005 (2013.01 - EP)
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
DOCDB simple family (publication)
WO 0070804 A1 20001123; AU 3912100 A 20001205; CA 2338042 A1 20001123; EP 1099319 A1 20010516; JP 2003500894 A 20030107; KR 20010074726 A 20010809
DOCDB simple family (application)
US 0007685 W 20000322; AU 3912100 A 20000322; CA 2338042 A 20000322; EP 00918287 A 20000322; JP 2000619142 A 20000322; KR 20017000760 A 20010117