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Multi-wavelength optical fiber laser adopting tungsten disulfide as stable wavelength output and preparation method thereof

A fiber laser and tungsten disulfide technology, which is applied in lasers, laser components, phonon exciters, etc., can solve problems such as difficult to effectively obtain multi-wavelength output, and achieve the effect of suppressing mode competition and good stability

Pending Publication Date: 2021-12-21
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the uniform broadening characteristics of erbium-doped fibers, it will lead to severe mode competition effects of light at various frequencies, and it is difficult to effectively obtain stable multi-wavelength output

Method used

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  • Multi-wavelength optical fiber laser adopting tungsten disulfide as stable wavelength output and preparation method thereof
  • Multi-wavelength optical fiber laser adopting tungsten disulfide as stable wavelength output and preparation method thereof
  • Multi-wavelength optical fiber laser adopting tungsten disulfide as stable wavelength output and preparation method thereof

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Embodiment

[0024] A multi-wavelength fiber laser using tungsten disulfide as a stable wavelength output, such as figure 1 As shown, a 980nm pump 1 is connected to a 10m-long erbium-doped optical fiber 3 through a wavelength division multiplexer 2 and connected to a ring cavity. An isolator 4 is added to protect the pump and ensure the unidirectional transmission of the laser light in the ring cavity. The Lyot filter in the ring cavity is composed of polarization controller PC15, 8m long polarization maintaining fiber 6 and polarization controller PC27. The tungsten disulfide film is adsorbed on the end face of the optical fiber jumper, and connected into the annular cavity by using the flange 8. A 10:90 1×2 coupler 9 is used, wherein 90% of the light continues to transmit in the laser ring cavity, and 10% of the light enters the spectrometer 10 for observation.

[0025] The 980nm laser is emitted by the 980nm pump 1, and the 10m-long erbium-doped fiber 3 is connected through the wavel...

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Abstract

The invention discloses a multi-wavelength optical fiber laser adopting tungsten disulfide as stable wavelength output and a preparation method thereof, and belongs to the field of multi-wavelength optical fiber lasers. The multi-wavelength optical fiber laser is an annular cavity, a 980nm pump is used, an erbium-doped optical fiber is used as a gain medium, a Lyot filter is used, and a two-dimensional material tungsten disulfide film is used as a saturable absorber. The multi-wavelength optical fiber laser has the advantages that the optical fiber laser is simple in structure and easy to construct, good nonlinear optical characteristics can be obtained only by optically depositing the two-dimensional tungsten disulfide nanosheet dispersion liquid on the end face of the optical fiber patch cord at the room temperature, and a power balancing effect on the output multi-wavelength frequency spectrum is achieved; different numbers of multi-wavelength lasing can be obtained by changing the length of the polarization maintaining optical fiber in the Lyot filter; and the multi-wavelength optical fiber laser has good stability, is expected to be applied to a wavelength division multiplexing optical fiber communication system as a carrier light source, and is applied to the fields of distributed sensing, laser ranging and the like as a light source.

Description

technical field [0001] The invention belongs to the field of multi-wavelength fiber lasers, in particular to the nonlinear application of a saturable absorber and its preparation and connection method. Background technique [0002] As one of the most promising light sources in the field of optical communication, multi-wavelength erbium-doped fiber lasers have abandoned the shortcomings of traditional semiconductor laser arrays such as complex operation, large structure, and high cost. They have high gain, wide bandwidth, low insertion loss, and simple structure. Its gain curve almost covers the working wavelength range of 1550nm of WDM system, and has broad application prospects in dense WDM, optical fiber sensing, optical measurement and other fields. However, due to the uniform broadening characteristics of Erbium-doped fiber, it will cause severe mode competition effect of light of each frequency, and it is difficult to effectively obtain stable multi-wavelength output. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/137
CPCH01S3/06791H01S3/137
Inventor 童峥嵘姜秋皓张卫华闫纲晓王雪
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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