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Communication Dans Un Congrès Année : 2019

Single-sideband hybrid opto-electronic oscillator

Résumé

Opto-electronic oscillators (OEO) are important building blocks in microwave photonics systems, allowing to obtain low-phase noise optically-carried radiofrequency signals. We have recently demonstrated an OEO scheme based on a monolithic dual-frequency source, whose beatnote is self-stabilized using frequency-shifted optical feedback, and a delay line [2]. The main interest of such a setup is that it allows the generation of single-sideband signals, which are thus insensitive to dispersion fading when propagating in optical fibers. The scheme presented offered good short-term performances. However, it could be affected by mode-hopping due to both the resonant modes of the optical feedback loop, and to those of the optoelectronic loop including the delay line. In the present work, we present significant improvements, namely the complete suppression of mode-hopping, and a significant reduction of the spurs in the phase noise spectrum. This has been obtained by (i) the introduction of a RF interferometer thanks to the use of two delay lines, and (ii) a significant shortening of the optical feedback loop (see Fig. 1(a)).
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Dates et versions

hal-02474747 , version 1 (11-02-2020)

Identifiants

Citer

Aurélien Thorette, Marco Romanelli, Steve Bouhier, Frederic van Dijk, Mehdi Alouini, et al.. Single-sideband hybrid opto-electronic oscillator. Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference 2019 (CLEO-Europe/EQEC 2019), Jun 2019, Munich, Germany. pp.1-1, ⟨10.1109/CLEOE-EQEC.2019.8871553⟩. ⟨hal-02474747⟩
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