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High-performance integrated Fresnel lenses on oxidised silicon substrate

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3 Author(s)
Valette, S. ; LETI, Commissariat à l'Energie Atomique, Grenoble, France ; Morque, A. ; Mottier, P.

We report, to our knowledge for the first time, the achievement of analogue integrated Fresnel lenses having very high performances, and the association of two such lenses. Focusing efficiencies higher than 60% have been measured on that component with a background noise lower than ¿27 dB at 1° off-axis in the focal line.

Published in:

Electronics Letters  (Volume:18 ,  Issue: 1 )