Abstract

We propose a novel nonlinear-optical fiber modulator for high-power (>1-W) single-mode fiber lasers. The device is based on transferring the amplitude modulation from a low-power signal at the Stokes frequency onto a high-power beam through stimulated Raman scattering. The efficiency and limitations of the Raman modulator when highly Ge-doped fiber is used is considered. An insertion loss of less than 0.4  dB and an extinction ratio of 20  dB are predicted for modulation of a 10-W single-mode Nd-doped fiber laser.

© 1997 Optical Society of America

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