High-efficiency single-frequency Brillouin fiber laser with a tunable coupling coefficient

Abstract

We theoretically analyze a high-efficiency single-frequency Brillouin all-fiber ring laser at 1.5 m wavelength, taking pump depletion into account. The output pump and Stokes intensities are calculated as functions of the cavity coupling coefficient and of the input pump intensity. Lasing threshold and pump-to-Stokes conversion efficiency are predicted. Furthermore, we demonstrate good agreement between model results and measurements. Applications to the improvement of optoelectronic links for radio-frequency signals by use of stimulated Brillouin scattering fiber lasers are also presented.

Single-longitudinal-mode Brillouin fiber laser incorporating an unpumped erbium-doped fiber loop

“…Hybrid SLM BFLs have also been demonstrated [14,15], where Brillouin gain incorporated with erbium or ytterbium doped fiber amplifier. To date, most SLM BFLs are operated in a short length ring configuration [1,16,17]. For short fibers (<10 meter), the ring laser with single longitude mode can operate stably.…”

Analysis of the design of a passive resonant miniature optical gyroscope based on integrated optics technologies

“…Assuming for instance a 5 cm diameter cavity and that the low confinement of the mode allows us to consider that it propagates in silica only, we end up with a threshold of 100 W, far above the considered powers. For this calculation, we considered a single pass geometry, because we can choose the cavity free spectral range to make the Brillouin scattered frequency non resonant when the laser beam is resonant, as opposed to a doubly resonant geometry [56].…”