Forward Brillouin fiber laser based on stimulated Raman

Abstract

The invention discloses a forward Brillouin fiber laser based on stimulated Raman. The forward Brillouin fiber laser comprises a tunable single-frequency laser, an erbium-doped fiber amplifier, a polarization controller, an optical coupler, a single-mode fiber, a polarization beam combiner, a photodiode, a frequency spectrograph and a spectrograph. The forward Brillouin fiber laser based on stimulated Raman has the advantages and positive effects that compared with an existing Brillouin fiber laser, by utilizing the stimulated Raman R0m mode which is equal in frequency interval and related tothe fiber core diameter, the design flexibility of a resonant cavity is improved, and the Brillouin fiber laser with irrelevant cavity length is realized.

Description

technical field

[0001] The invention belongs to the field of laser research, in particular to a forward Brillouin fiber laser based on stimulated Raman. Background technique

[0002] Brillouin fiber laser has the characteristics of narrow linewidth and high signal-to-noise ratio. Because its signal lead is inversely proportional to the linewidth, it is widely used in optical communication systems, fiber radio, optical bistable, distributed / point fiber sensing and ultra- The speed of light transmission and other fields have a wide range of applications. The stimulated Brillouin scattering of optical fiber can be divided into forward Brillouin scattering and backward Brillouin scattering according to the direction. In recent years, with the continuous research and development of forward Brillouin scattering by domestic and foreign scholars, its self-phase matching The easy and spontaneous generation of high-order Stokes and anti-Stokes enables forward Brillouin scattering to ...

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