Hybrid cavity type dual-wavelength narrow linewidth optical fiber laser

Abstract

The invention discloses a hybrid cavity type dual-wavelength narrow linewidth optical fiber laser, relates to the field of a laser and aims at solving the problem that in the prior part, dual-wavelengths or multi-wavelengths are generally generated in a fixing cavity or a random cavity independently and narrow linewidth traditional lasers and random lasers cannot be output at the same time. According to the hybrid cavity type dual-wavelength narrow linewidth optical fiber laser, a linear resonant cavity is driven through two lasers emitted by two pump lasers; two narrow linewidth lasers are symmetrically output through oscillation tuning of the linear resonant cavity; the random cavity is driven by the two narrow linewidth lasers output by the linear resonant cavity; two ultra-narrow linewidth Brillouin random lasers through oscillation tuning of the random cavity; two different cavity structures and two different gain mechanisms are realized in the same system; and the narrow linewidth traditional lasers and random lasers are output at the same time under the effect of the same pump source. The hybrid cavity type dual-wavelength narrow linewidth optical fiber laser applies to the field of a laser technology and the laser.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a mixed-cavity double-wavelength narrow-linewidth fiber laser. Background technique [0002] At present, multi-wavelength fiber lasers have potential applications in microwave generation, optical sensing, short optical pulses, optical frequency measurement, optical signal processing, frequency shifting, dense wavelength division multiplexing (DWDM) optical communication, and data transmission amplification, and Its implementation cost is low, and it is easy to produce narrow linewidth laser output, so it has attracted widespread attention. [0003] At room temperature, multi-wavelength fiber lasers can be realized by using nonlinear optical effects such as stimulated Brillouin scattering (SBS), four-wave mixing (FWM), and nonlinear polarization rotation (NPR); it is also possible to utilize rare-earth gain media , such as erbium-doped fiber (EDF), the integration of ytterbium-doped fiber i...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the generation of dual-wavelength and multi-wavelength in the prior art is generally realized separately in a fixed cavity or a random cavity, and cannot simultaneously output narrow-linewidth traditional lasers and random lasers. The present invention provides a fixed The combination of cavity and random cavity, the same system realizes two different gain mechanisms, and realizes the output of narrow linewidth traditional laser and random laser under the same pump source, a hybrid cavity dual-wavelength narrow linewidth fiber laser

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