We perform a detailed quantitative numerical analysis of a partially coherent quasi-cw fiber laser on the example of a high-Q normal dispersion cavity Raman fiber laser. The key role of precise spectral performances of fiber Bragg gratings forming the laser cavity is clarified. It is shown that cross-phase modulation between the pump and Stokes waves does not affect the generation. Amplitudes of different longitudinal modes strongly fluctuate, obeying the Gaussian distribution. As the intensity statistics is noticeably nonexponential, longitudinal modes should be correlated.
© 2010 Optical Society of America
Original Manuscript: July 27, 2010
Revised Manuscript: September 9, 2010
Manuscript Accepted: September 9, 2010
Published: September 30, 2010
Dmitriy V. Churkin, Sergey V. Smirnov, and Evgenii V. Podivilov, "Statistical properties of partially coherent cw fiber lasers," Opt. Lett. 35, 3288-3290 (2010)