Dispositif optique de récupération du rythme d'un signal code

The invention relates to an optical device for recovering the clock rate of a signal coded (Si) by a digital code such as the NRZ, CMI, biphase, etc. code. This device includes . a signal (1) for shaping the coded signal which converts the coded signal to the form of a series of pulses with duration...

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Bibliographische Detailangaben
Hauptverfasser:	PATRICE POTTIER, GEORGES CLAVEAU, RENE AUFFRET
Format:	Patent
Sprache:	fre
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	The invention relates to an optical device for recovering the clock rate of a signal coded (Si) by a digital code such as the NRZ, CMI, biphase, etc. code. This device includes . a signal (1) for shaping the coded signal which converts the coded signal to the form of a series of pulses with duration equal to N x T/2 and with recurrence equal to N x T, . a circuit (19) for recovering the clock rate, able to determine the clock signal sought. Application to digital transmission by optical fibres.