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Optical delay line based on arrayed waveguide gratings' spectral periodicity and dispersive media for antenna beamforming applications

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4 Author(s)
B. Vidal ; FRG/ITACA Res. Inst., Univ. Politecnica de Valencia, Spain ; J. L. Corral ; M. A. Piqueras ; J. Marti

An optical delay line (ODL) based on the free spectral range periodicity of arrayed waveguide gratings (AWGs) and dispersive media is analyzed with emphasis on the AWG physical features that limit its performance as a photonic antenna beamforming network. This ODL presents multiple simultaneous true-time delay, straightforward multibeam capability and a drastic cost reduction in comparison with previously reported schemes. Moreover, a simulation model of the ODL that takes into account the AWG frequency misalignment is presented. Finally, experimental results are also provided for 40-GHz electrical signals.

Published in:

IEEE Journal of Selected Topics in Quantum Electronics  (Volume:8 ,  Issue: 6 )