High-precision broadband silicon photonics beamformer

Romero, Pablo Martinez-Carrasco; López, Daniel Pérez; Pérez‐Galacho, Diego; Ho, Tan; Wessel, David; Francoy, Jose Capmany

doi:10.1109/mwp54208.2022.9997698

Cited by 1 publication

(1 citation statement)

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“…A number of approaches have been proposed to achieve programmable RF photonic circuits. Functionalities including filtering [6][7][8][9][10], phase shifting [11][12][13][14][15], and beamforming [16][17][18] have been realized in application-specific photonic integrated circuits (PIC) that can achieve high performance. Another approach is to create general-purpose integrated MWP circuits that can be configured for a high number of functionalities.…”

Section: Introductionmentioning

confidence: 99%

Linearized Integrated Microwave Photonic Circuit for Filtering and Phase Shifting

Liu¹,

Ye²,

Daulay³

et al. 2023

Preprint

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Photonic integration, advanced functionality, reconfigurability, and high RF performance are key features in integrated microwave photonic systems that are still difficult to achieve simultaneously. In this work, we demonstrate an integrated microwave photonic circuit that can be reconfigured for two distinct RF functions, namely, a tunable notch filter and a phase shifter. We achieved >50 dB high-extinction notch filtering over 6-16 GHz and 2π continuously tunable phase shifting over 12-20 GHz frequencies. At the same time, we implemented an on-chip linearization technique to achieve a spurious-free dynamic range of more than 120 dB • Hz 4/5 for both functions. Our work combines multi-functionality and linearization in one photonic integrated circuit, and paves the way to reconfigurable RF photonic front-ends with very high performance.

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