Efficient single-mode Brillouin fiber laser for low-noise optical carrier reduction of microwave signals

S. Norcia, S. Tonda-Goldstein, D. Dolfi, J.-P. Huignard, R. Frey
2003 Optics Letters  
We experimentally demonstrate efficient optical carrier reduction of microwave signals with a single-mode 1.5-mm wavelength Brillouin all-fiber ring laser. Because of the tunable optical coupling, the lasing threshold of the short-length (20-m) fiber cavity is lower than 5 mW, and high conversion efficiencies (up to 60%) are obtained at any pump power up to ϳ200 mW. Using the single-mode Stokes beam as a seed for the stimulated Brillouin scattering process allows up to 40-dB optical carrier
more » ... etion with almost no added noise for an optically carried microwave signal at 6 GHz. In addition, using this resonator, we provide evidence of generation of high-spectral-purity beatnotes.
doi:10.1364/ol.28.001888 pmid:14587765 fatcat:s4dnlisjyfejhmhcfi25y3niqa