2023
DOI: 10.1088/1612-202x/ace9cb
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Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Huinan Li,
Feng Yang,
Xiaolin Sui
et al.

Abstract: In this paper, we proposed a narrow linewidth single-longitudinal-mode (SLM) fiber laser, which was realized by employing a triple-cascaded unpumped erbium doped fiber (EDF) Sagnac loops structure with Rayleigh backscattering (RBS) feedback. Narrow linewidth SLM laser output can be achieved by using the unpumped EDF loops. However, it is generally difficult to achieve laser emission with a linewidth below 1 kHz and a power of tens of milliwatts. In this paper, we propose a fiber laser with multiple unpumped Er… Show more

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