Les plans de symŽtrie sont souvent identifiŽs par lÕexistence dÕune polarisation pure perpendiculaire ˆ ces plans. Cependant, ce type de polarisation peut appara”tre sans que le plan soit un plan de symŽtrie. Les plans qui prŽsentent une polarisation pure suivant leurs normales sont appelŽs Ç plans de dŽcouplage È, car le systme de trois Žquations linŽaires couplŽes par les cosinus directeurs ...

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In this study, we investigate the potential of sea ice segmentation by Cand X-band multi-polarisation synthetic aperture radar (SAR) features during late summer. Five highresolution satellite SAR scenes were recorded in the Fram Strait covering iceberg-fast first-year and old sea ice during a week with air temperatures varying around 0 C. Sea ice thickness, surface roughness and aerial photogra...

Circular type’ interferometric system for quantum key distribution is proposed. The system has naturally self-alignment and compensation of birefringence and also has enough efficiency against polarisation dependence. Moreover it is easily applicable to multi-party. Key creation with 0.1 photon per pulse at a rate of 1.2KHz with a 5.4% QBER over a 200m fiber was realized. Quantum key distributi...