Bandwidth-efficient phase modulation techniques for Stimulated Brillouin Scattering suppression in fiber optic parametric amplifiers

Suppression of Stimulated Brillouin Scattering

Thermal Effects Study on Stimulated Brillouin Light Scattering in Photonic Crystal Fiber

we investigate the temperature-dependences of the Brillouin frequency shift in three different kind of single-mode fibers using a heterodyne method for sensing temperature. Positive dependences coefficients of 0.77, 0.56 and 1.45MHz/0C are demonstrated for 25 km long single-mode fiber, 10 km long non-zero dispersion shifted fiber and 100 m photonic crystal fiber, respectively. The results indic...

Suppressing the stimulated Brillouin scattering in high power fiber amplifiers by dual-single- frequency amplification

We demonstrate the suppression of stimulated Brillouin scattering (SBS) in high power fiber amplifiers by a dual-single-frequency amplification. The output power of dualsingle-frequency fiber amplifiers in all-fiber configuration is boosted to 275 W with seeds central wavelength of 1063.7 and 1064.4 nm, respectively. The power conversion efficiency is 76.6%. The maximum output power is limited ...

Broadband optical chaos for stimulated Brillouin scattering suppression in power over fiber

Broadband chaos generated in an optically injected semiconductor laser is applied for power-over-fiber transmission. By varying the injection power, period-one oscillation, period-two oscillation, and chaotic oscillation are observed in the injected slave laser, indicating a period-doubling route to chaos. Compared to the free-running output of the laser, its chaotic output has a drastically in...

1.6  kW Yb fiber amplifier using chirped seed amplification for stimulated Brillouin scattering suppression.

In a high power fiber amplifier, a frequency-chirped seed interrupts the coherent interaction between the laser and Stokes waves, raising the threshold for stimulated Brillouin scattering (SBS). Moving the external mirror of a vertical cavity surface-emitting diode laser 0.2 μm in 10 μs can yield a frequency chirp of 5×1017  Hz/s at a nearly constant output power. Opto-electronic fee...