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We measure the signal power penalty after a co-pumped Raman amplifier from increased pump relative intensity noise due to stimulated Brillouin scattering, and propose an alternate pump reflection ratio to characterize this effect.
High-power supercontinuum generation, based on a highly nonlinear fiber pumped by a continuous-wave Raman fiber laser, is reported. Output powers as high as 3.2 W and bandwidths greater than 544 nm are experimentally demonstrated.
Advanced 14xx-nm-pump-lasers are reviewed for next generation optical fiber amplifiers. Hybrid-pump with ultra high power and low-DOP, uncooled pump for submarine system, and inner-grating-multi-mode-laser (IGM-laser) with ultra low noise and reduced stimulated-Brillouin-scattering are described.
Novel wavelength conversion technique by four-wave mixing inside a fiber Raman laser is proposed. By adopting highly-nonlinear dispersion shifted fibers, a high conversion efficiency and a wide conversion bandwidth are realized without an optical amplifier.
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