1[mu]m waveband column vector fiber laser based on mode selection coupler

A fiber laser, mode selection technology, applied in the direction of lasers, laser parts, phonon exciters, etc., can solve the problems of column vector laser structure complex, low mode purity, large loss, etc., to achieve compact structure, simple process, insertion low loss effect

Active Publication Date: 2018-03-23
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The solution of the present invention is to overcome the disadvantages of the prior art, such as complex structure, large loss, low efficiency, and low mode purity, and to provide a new method for generating continuous columnar vector lasers in the 1 μm band, that is, based on mode selective coupling The 1μm band cylindrical vector fiber laser of the laser, a...

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  • 1[mu]m waveband column vector fiber laser based on mode selection coupler
  • 1[mu]m waveband column vector fiber laser based on mode selection coupler
  • 1[mu]m waveband column vector fiber laser based on mode selection coupler

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Embodiment Construction

[0023] The technical solution of the present invention will now be further described in detail in conjunction with the accompanying drawings. The 1 μm band cylindrical vector fiber laser based on the mode selective coupler proposed by the present invention includes a pump source, a wavelength division multiplexer, a gain fiber, a circulator, a single-mode Bouguer grating, a first polarization controller, and a second polarization controller device, mode selective coupler and collimator; wherein, the output end of the pump source is connected to the short-wavelength input end of the wavelength division multiplexer, and the output end of the wavelength division multiplexer is connected to port 1 of the circulator through a gain fiber , the 2-port of the circulator is connected to the single-mode grating, the 3-port of the circulator is connected to the long wavelength of the first polarization controller, the mode selective coupler and the wavelength division multiplexer, and the...

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Abstract

The invention discloses a 1[mu]m waveband column vector fiber laser based on a mode selection coupler. The laser comprises a pumping source, a wavelength division multiplexer, a gain fiber, an annulardevice, a single-mode Bragg grating, a first polarization controller, a second polarization controller, a mode selection coupler and a collimator. The output end of the pumping source is connected with the short wavelength input end of the wavelength division multiplexer. The output end of the wavelength division multiplexer is connected with the port 1 of the annular device through the gain fiber. The port 2 of the annular device is connected with the single-mode Bragg grating. The port 3 of the annular device is connected with the long wavelength of the wavelength division multiplexer through the first polarization controller and the mode selection coupler. The second polarization controller and the collimator are connected to the few mode fiber output end of the mode selection coupler.The laser is advantaged by high slope efficiency, slight insertion loss and high column vector laser polarization purity.

Description

technical field [0001] The invention belongs to the field of fiber lasers, and in particular relates to a 1 μm band cylindrical vector fiber laser based on a mode selective coupler. Background technique [0002] Cylindrical vector lasers include radially polarized light and angularly polarized light. Because of their special symmetrical polarization and intensity characteristics, they are widely used in quantum physics, optical tweezers, fiber optic sensing, surface plasmon excitation, and fiber optic communications. In particular, radially polarized light has attracted more and more attention. [0003] Cylindrical vector lasers are mainly generated by free-space devices or all-fiber methods. The use of free-space devices is mainly through the precise adjustment of the polarization state of bulk free-space devices such as phase modulators, combined half-wave plates, birefringent crystals, and subwavelength gratings to obtain cylindrical vector lasers. However, the use of t...

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Application Information

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IPC IPC(8): H01S3/067
CPCH01S3/06716H01S3/0675H01S3/06754H01S3/06791
Inventor 万洪丹汪杰张祖兴张姝孙兵张琳
Owner NANJING UNIV OF POSTS & TELECOMM
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