EP 1004954 A1 20000531 - Optical device for processing digital optical signals
Title (en)
Optical device for processing digital optical signals
Title (de)
Optisches Gerät zur Verarbeitung von digitalen optischen Signalen
Title (fr)
Dispositif optique de traîtement de signaux optiques numériques
Publication
Application
Priority
EP 98203978 A 19981125
Abstract (en)
An optical device (500) comprising a first element (100) capable of supplying a digital optical signal comprising at least one sequence (1000) of N bits modulated by a suitable phase modulation; a series-parallel converter (6) for converting the said at least one sequence (1000) of N bits into a spatial pattern (3000) of N bits in parallel, carrying the same information as the said sequence (1000) of N bits; and a second element (9) capable of carrying out an operation of comparison between the said spatial pattern (3000) of N bits and a predetermined spatial reference pattern of N bits, and of supplying at the output a signal (2000) having an intensity whose value depends on the result of the said comparison operation, in which the said suitable phase modulation is 0/ alpha pi , in which 0< alpha <1. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
G06E 1/00 (2013.01)
Citation (search report)
- [DA] US 5214534 A 19930525 - KALLMAN ROBERT R [US], et al
- [A] US 4976520 A 19901211 - BRANDSTETTER ROBERT W [US], et al
- [A] EP 0587020 A2 19940316 - TEXAS INSTRUMENTS INC [US]
- [A] WO 9634307 A1 19961031 - RISOE FORSKNINGSCENTER [DK], et al
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 1004954 A1 20000531; EP 1004954 B1 20040512; EP 1004954 B9 20041103; DE 69823839 D1 20040617; DE 69823839 T2 20050811
DOCDB simple family (application)
EP 98203978 A 19981125; DE 69823839 T 19981125