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Wideband dynamic microwave frequency identification system using a low-power ultracompact silicon photonic chip

Photonic-based instantaneous frequency measurement systems are usually bulky or require high optical power. Here, Burla et al. demonstrate an integrated measurement system that can identify frequency-varying signals in a dynamic fashion, without the need for fast measurement instrumentation.

Maurizio Burla
Xu Wang
José Azaña
ResearchOpen Access30 Sept 2016
Nature Communications

Volume: 7, P: 1-8
Reconfigurable photonic generation of broadband chirped waveforms using a single CW laser and low-frequency electronics

Producing versatile radio-frequency chirped waveforms often requires complicated techniques. The authors use a fiber-optic frequency-shifting loop to create a low-complexity photonic chirp generator with high bandwidth and fully flexible properties for application in radar, spectroscopy, and imaging.

Hugues Guillet de Chatellus
Luis Romero Cortés
José Azaña
ResearchOpen Access22 Jun 2018
Nature Communications

Volume: 9, P: 1-12
Millimeter-wave to near-terahertz sensors based on reversible insulator-to-metal transition in VO₂

Vanadium dioxide is a strongly correlated material interesting for its ultra-fast resistive switching controlled by an electric-field-driven insulator-metal transition. Here, VO₂ stochastic oscillator power sensors for mm-wave to sub-THz radiation are demonstrated, displaying high responsivities, low noise, and a small scalable footprint.

Fatemeh Qaderi
Teodor Rosca
Adrian M. Ionescu
ResearchOpen Access22 May 2023
Communications Materials

Volume: 4, P: 1-12

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Wideband dynamic microwave frequency identification system using a low-power ultracompact silicon photonic chip

Reconfigurable photonic generation of broadband chirped waveforms using a single CW laser and low-frequency electronics

Millimeter-wave to near-terahertz sensors based on reversible insulator-to-metal transition in VO2

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Millimeter-wave to near-terahertz sensors based on reversible insulator-to-metal transition in VO₂