Optical beam forming for large antenna arrays based on dispersive and non-dispersive true-time delays

Borja Vidal; Teresa Mengual; Cristina Ibáñez-López; Javier Marti; Iain McKenzie; Emilio Vez; Javier Santamaria; Francesc Dalmases; Lluis Jofre

doi:10.1117/12.2308043

21 November 2017 Optical beam forming for large antenna arrays based on dispersive and non-dispersive true-time delays

Borja Vidal, Teresa Mengual, Cristina Ibáñez-López, Javier Marti, Iain McKenzie, Emilio Vez, Javier Santamaria, Francesc Dalmases, Lluis Jofre

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Proceedings Volume 10567, International Conference on Space Optics — ICSO 2006; 105672C (2017) https://doi.org/10.1117/12.2308043
Event: International Conference on Space Optics 2006, 2006, Noordwijk, Netherlands

Abstract

In this contribution, it is shown how the number of optical sources in WDM-based optical beamforming networks can be reduced. In optical beamforming networks based on several optical carriers and a dispersive medium a correspondence is established between each optical carrier and each antenna element. However, it is feasible to reduce the number of optical sources of the architecture if the optical carriers are reused by means of the combination of dispersive and non-dispersive time delays.

To sum up, this contribution shows how WDM optical beamforming architectures can be simplified combining dispersive and non-dispersive time delays to allow the use of photonic beamforming techniques in large antenna arrays. The number of optical sources of the beamformer, as well as its total size and cost, can be highly reduced using this technique. Experimental results validating the feasibility of the technique are provided.

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Borja Vidal, Teresa Mengual, Cristina Ibáñez-López, Javier Marti, Iain McKenzie, Emilio Vez, Javier Santamaria, Francesc Dalmases, and Lluis Jofre "Optical beam forming for large antenna arrays based on dispersive and non-dispersive true-time delays", Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105672C (21 November 2017); https://doi.org/10.1117/12.2308043

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