Vector soliton laser

Abstract

The invention provides a vector soliton laser, and relates to the field of lasers. The vector soliton laser comprises a pumping source, an optical fiber annular resonant cavity, a second optical fiber coupler, a second polarization controller, a third polarization controller and a polarization beam combiner; the optical fiber annular resonant cavity is formed by sequentially connecting a saturable absorber, a first polarization controller, a first optical fiber coupler, an optical isolator, a wavelength division multiplexer and an erbium-doped optical fiber, and is used for outputting scalar solitons; the pumping source is connected with the wavelength division multiplexer; the second optical fiber coupler is respectively connected with the first optical fiber coupler, the second polarization controller and the third polarization controller; the second polarization controller and the third polarization controller are respectively connected with the polarization beam combiner through polarization-maintaining single-mode optical fibers; the second optical fiber coupler, the second polarization controller, the third polarization controller and the polarization beam combiner are matched for converting scalar solitons into vector solitons; vector solitons can be generated outside the optical fiber annular resonant cavity.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a vector soliton laser. Background technique [0002] Single-mode fiber supports two orthogonal polarization modes. If there is no polarization-sensitive device in the mode-locked fiber resonator, the two modes can be transmitted relatively independently to generate vector solitons. If the pulse exists only in a single polarization direction, it is called a scalar soliton. Scalar and vector solitons have their own characteristics: scalar solitons have a single polarization state, are easy to manipulate, and have stable polarization splitting properties. The manipulation of vector solitons is relatively complicated, but with its polarization diversity and multiplexing, it plays an irreplaceable role in 3D imaging and dual-comb measurement systems. So far, there have been many reports on the direct generation of vector solitons based on mode-locked fiber lasers, but no reports on the synthe...

AI Technical Summary

Problems solved by technology

So far, there have been many reports on the direct generation of vector solitons based on the mode-locked fiber laser cavity, but the vector solitons based on the synthesis of scalar solitons outside the cavity have not been reported.

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