Sub-threshold optoelectronic oscillator for selective amplification of RF signals

Brenden R. Glover; Michael O. Osisanya; Gautam Vemuri; Joseph S. Suelzer

doi:10.1117/12.3026890

2 October 2024 Sub-threshold optoelectronic oscillator for selective amplification of RF signals

Brenden R. Glover, Michael O. Osisanya, Gautam Vemuri, Joseph S. Suelzer

Proceedings Volume 13110, Active Photonic Platforms (APP) 2024; 131100I (2024) https://doi.org/10.1117/12.3026890
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

We present an experimental and numerical investigation of a sub-threshold optoelectronic oscillator (OEO) subject to injection from an external RF signal. A time-delayed numerical model is introduced and the agreement with experiments is discussed. The sub-threshold OEO exhibits frequency selective RF amplification. The OEO sensitivity is investigated for different subthreshold internal gain values. As the internal gain of the system increases and the oscillation threshold is approached, the OEO exhibits larger amplification of an injected RF signal. When the injected RF signal is on resonance, the OEO exhibits a maximum RF gain of approximately 28 dB near 0.5% below threshold. Furthermore, the injected RF signal frequency is scanned, and the amplified response is measured. Finally, we highlight the role of the intrinsic time-delay within the OEO’s temporal response to a pulsed, injected RF signal.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Brenden R. Glover, Michael O. Osisanya, Gautam Vemuri, and Joseph S. Suelzer "Sub-threshold optoelectronic oscillator for selective amplification of RF signals", Proc. SPIE 13110, Active Photonic Platforms (APP) 2024, 131100I (2 October 2024); https://doi.org/10.1117/12.3026890

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