Method for the optical transmission of polarization...

Details Method for the optical transmission of polarization... Method for the optical transmission of polarization...

H - Electricity

04

J

H04J 14/06 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2595628

In order to reduce mutual interferences between POLMUX (PMS1) and (PMS2) signals, the inventive method consists in transmitting said signals with differed to each other carrying signals (TS1x, TS1y; TS2x, TS2y), thereby making it possible to obtain the circular polarisation of each resulting POLMUX signal (PMS1, PMS2). Each second POLMUX (PMS2) signal is transmissible with an opposite circular polarisation. In order to reduce also interferences when only one modulated data signal (PS2x, PS2y) is transmitted through a POLMUX channel, a polarisation plane of modulated data signals (PS2x, PS2y) of each second POLMUX (K2) channel is turned at 45~. In a variant, polarisation multiplex signals (PMS1, PMS2, ...) are produces and the resulting polarisations thereof in adjacent channels are perpendicular to each other.

Afin de réduire les interférences mutuelles entre des signaux POLMUX (PMS1) et (PMS2), ceux-ci sont envoyés avec des signaux porteurs (TS1x, TS1y; TS2x, TS2y) décalés les uns par rapport aux autres. On obtient ainsi une polarisation circulaire de chaque signal POLMUX résultant (PMS1, PMS2). Chaque second signal POLMUX (PMS2) peut être transmis avec une polarisation circulaire opposée. Afin de réduire également les interférences lorsque seulement un signal de données modulé (PS1x) est transmis sur un canal POLMUX, le plan de polarisation des signaux de données modulés (PS2x, PS2y) de chaque second canal POLMUX (K2) est tourné de 45°. Dans une variante, des signaux multiplex de polarisation (PMS1, PMS2, ) sont produits et leurs polarisations résultantes dans des canaux voisins sont perpendiculaires les unes aux autres.

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