Photonic true time delay beamforming technique with ultra-fast beam scanning | Zendy

Lihong Zhang | Zendy; Ming Li | Zendy; Nuannuan Shi | Zendy; Xinyi Zhu | Zendy; Shuqian Sun | Zendy; Jian Tang | Zendy; Wei Li | Zendy; Ninghua Zhu | Zendy

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Photonic true time delay beamforming technique with ultra-fast beam scanning

Author(s) -

Lihong Zhang,

Ming Li,

Nuannuan Shi,

Xinyi Zhu,

Shuqian Sun,

Jian Tang,

Wei Li,

Ninghua Zhu

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.014524

Subject(s) - optics , wavelength , materials science , laser , true time delay , beamforming , photonics , phased array , fiber laser , optoelectronics , antenna (radio) , physics , telecommunications , computer science

A photonic-based true time delay (TTD) phased array antenna (PAA) with ultra-fast angle scan is proposed and experimentally demonstrated. A tunable TTD is realized using a wavelength-swept laser and an array of dispersive elements. The key novelty of our work is the ultra-fast angle scan using an ultra-fast wavelength-swept laser source, which is constructed by a gated multi-wavelength laser (MWL) and a dispersion compensation fiber (DCF). In our experiments, a wavelength-sweep time between two adjacent wavelengths is only several nanoseconds for wavelength spacing of 2.4, and 3.2 nm. We successfully realized an ultra-fast angle scan from 0 to 43° with a step of 8.8° in 12.48 ns.

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