A self-gain random distributed feedback fiber laser based on stimulated Rayleigh scattering

作者：Zhu Tao^*; Bao Xiaoyi; Chen Liang

来源：Optics Communications, 2012, 285(6): 1371-1374.

DOI：10.1016/j.optcom.2011.11.072

• Fiber laser
• Random laser
• Rayleigh
• Scattering

We reported a narrow linewidth (similar to 4 kHz) fiber laser with a mirror-less open cavity based on stimulated Rayleigh scattering (STRS) in a non-uniform fiber. Because of its variable core size and dispersion along the fiber, the threshold of the stimulated Brillouin scattering was increased by similar to 7 dB compared with that of conventional single mode fiber, which allows higher order Rayleigh scattering. The self-gain is initiated by the spontaneous Rayleigh scattering and amplified via STRS, and the distributed feedback mechanism is formed by different orders of Rayleigh scattering counter-propagating as the "random mirror reflection" in the nonuniform fiber.

• 出版日期2012-3-15
• 单位重庆大学