Method of establishing communication through free space...

Details Method of establishing communication through free space... Method of establishing communication through free space...

H - Electricity

04

B

H04B 10/105 (2006.01) G01S 3/782 (2006.01) G01S 17/74 (2006.01) G02F 1/35 (2006.01)

Patent

CA 2479201

A method is disclosed for establishing communication through free space between a pair of optical communication devices. A divergent beam is transmitted from each of the optical communication devices toward the other. A portion of the received divergent beam is used to create a phase conjugated beam that is returned to the other device. A diffraction grating is dynamically recorded at each devices so as to establish a bi-directional self- tracking optical link between the devices.

L'invention concerne un procédé permettant d'établir une communication par le biais de l'espace libre, entre une paire de dispositifs de communication par fibre optique. Un faisceau divergent est émis depuis chaque dispositif de communication par fibre optique en direction de l'autre. Une partie du faisceau divergent reçu est utilisée pour créer un faisceau à phase conjuguée qui est renvoyé à l'autre dispositif. Un réseau de diffraction est enregistré de manière dynamique au niveau de chaque dispositif, de manière à établir une liaison optique à poursuite directionnelle automatique entre lesdits dispositifs.

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