Large delay tunable slow-light based on high-gain stimulated-Brillouin-scattering amplification in optical fibers

Abstract

Tunable stimulated-Brillouin-scattering (SBS)-based slow-light in optical fibers has potential applications in optical buffering in the future all-optical router commutation systems. However, due to the low SBS threshold and relatively high realistic signal power, the gain in the usual SBS systems is limited at ~30 dB. This paper presents a high-gain SBS scheme to realize large delay slow-light, which benefits from avoiding the depletion of the pump power in a short fiber as SBS media. The experiment demonstrates that, up to 50 dB non-saturated gain has been observed in the single-stage 591.8 m fiber SBS amplification. The slow-light delay can be obtained 52 ns, and the fractional delay can exceed 1. slow light, stimulated Brillouin scattering, SBS, fiber Brillouin amplifier, optical buffer, optical fiber

Study of stimulated Raman and Brillouin scattering in a finite interaction region under the convective instability condition

“…The backward scattering processes of SRS and SBS lead to energy loss when the incident laser propagates over underdense plasma, and play crucial roles in laser fusion [3]. SRS and SBS have been widely studied in theory over the past four decades [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Recently, relevant experiments and techniques have also developed rapidly [18][19][20][21].…”