Marie Guionie

Aurélien Thorette

Marco Romanelli

Anthony Carré

Hen Goulc'

Emmanuel Loas

Laurent Pinsard

Benoît Lablonde

Mehdi Cadier

Maxime Alouini

Vallet

Microwave-optical fiber lasers stabilized by frequency-shifted feedback

Microwave-optical fiber lasers stabilized by frequency-shifted feedback Funding DGA (ANR-16-ASTR-0016); Région Bretagne, FEDER, Rennes Metropole (CPER SOPHIE-Photonique).

Conclusions Perspectives References

[2] L. Kervevan et al., "Beat note jitter suppression in a dual-frequency laser using optical feedback", Opt. Lett. 32(9), 1099Lett. 32(9), -1101Lett. 32(9), (2007)).

Stabilization on an external reference using FSF Self-stabilization using FSF and a delay-line

Beat note at 1 GHz

[4] M. Vallet et al., "Self-stabilized optoelectronic oscillator using frequency-shifted feedback and a delay-line", IEEE Photon. Technol. Lett. 28(10), 1088-1091 (2016).

[1] W. H. Loh and R. I. Laming, "1.55 µm phase-shifted distributed feedback fibre laser", Electron. Lett. 31(17), 1440Lett. 31(17), -1442Lett. 31(17), (1995)).

One laser mode (x) is re-injected in the laser after frequency shift and polarization rotation

Proof-of-principle of both methods validated Methods are independent of the carrier (within limit of EOM bandwidth)

Reduction of linewidth (at least 100 times) and phase noise (better results on external reference than in the OPLL case)

Simulation of the laser dynamics with a rate-equation model Study on different fiber laser achitectures (DBR)

Increase the beat note for communication application (5G) Distributed-feedback (DFB) fiber lasers can sustain the oscillation of two orthogonal polarizations [1]. Such dual-frequency fiber lasers could be used as sensors or as a microwave optical source.

Optical spectrum

Output PBS

Output EOM

Frequency locked if

Beat note at 10 GHz

Dynamics governed by: 3483-3488 (2018).

Results

-Linewidth reduction (/100) -Few mode hops (40 kHz) -No RF filter needed (20 MHz resonances filtered by the laser)

ν x ν x ν x +f LO

M

  . Guionie 1 , A. Thorette 1 , M. Romanelli 1 , A. Carré 1 , G. Loas 1 , E. Pinsard 2 , L. Lablonde 2 , B. Cadier 2 , M. Alouini 1 , M. Vallet 1 and M. Brunel 1 Institut Foton, UMR 6082 CNRS, Université de Rennes 1, INSA Rennes, Lannion -France 1 Univ Rennes, CNRS, Institut FOTON -UMR 6082, Rennes 2 iXblue Photonics, Lannion

  Phase stabilization needed for microwave photonics applications. Solutions ? OPLL[2] but uses pump power as the actuator. Frequency-shifted feedback (FSF) as in bulk lasers[3]? Exp: Locking range 4 MHz when Γ= 3.0 10 -4 EO = 25 μs 40 kHz Hybrid opto-electronic (OEO) scheme[4] [3] M. Guionie et al., "Beat note stabilization in dual-polarization DFB fiber lasers by an optical phase-locked loop", Opt. Express 26(3),