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Broadband tunable multi-wavelength Brillouin fiber laser

A fiber laser, multi-wavelength technology, used in lasers, laser parts, phonon exciters, etc., can solve the problems of inability to flexibly adjust the number of output wavelengths, lack of adjustment structures, etc. Widely tunable effects

Active Publication Date: 2013-08-14
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the Brillouin multi-wavelength fiber laser in the prior art lacks an effective adjustment structure, the output multi-wavelength range can only be tuned by a tunable wavelength pump source, and the number of output wavelengths cannot be flexibly adjusted. A broadband tunable multi-wavelength Brillouin fiber laser with an erbium-doped fiber amplifier and a polarization adjustment structure embedded in a Sagnac ring is proposed to achieve broadband tuning in multiple wavelength ranges and flexible adjustment of the number of output wavelengths

Method used

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  • Broadband tunable multi-wavelength Brillouin fiber laser
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  • Broadband tunable multi-wavelength Brillouin fiber laser

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Embodiment 1

[0023] Embodiment one: if figure 1 As shown, a broadband tunable multi-wavelength Brillouin fiber laser includes a tunable Brillouin pump 1, an input / output circulator 2, a coupler 3, a polarization controller 4, a wavelength division multiplexer 5, and an erbium-doped fiber 6. 980nm pump laser 7 , single-mode optical fiber 8 , reflection circulator 9 , isolator 10 .

[0024] The tunable Brillouin pump 1 enters the fiber laser through the port a of the input / output circulator 2, the port b of the input / output circulator 2 is connected to the port d of the coupler 3, and the port c of the input / output circulator 2 passes through isolator 10 output.

[0025] The port f of the coupler 3 is connected to one end of the polarization controller 4, and the other end of the polarization controller 4 is connected to the port h of the wavelength division multiplexer 5. The polarization controller 4 can tune the polarization loss of the signal in the cavity to realize the output signal ...

Embodiment 2

[0036]Embodiment two: the broadband tunable multi-wavelength Brillouin fiber laser of the present invention, the light that 980nm pump laser 7 sends passes through 980 / 1550nm wavelength division multiplexer 5 and pumps 8m erbium-doped fiber 6, produces optical gain; Tunable distribution The Lieuin pump 1 enters the coupler 3 through the input / output circulator 2, a part of the light passes through the port g of the coupler 3 and is amplified by the 8m erbium-doped fiber 6, and then passes through the port h of the wavelength division multiplexer 5 and the polarization controller 4 Enter the coupler 3, and split the light at the port e and port g of the coupler 3; another part of the light of the tunable Brillouin pump 1 enters the 10km single-mode fiber 8 through the port e of the coupler 3, and generates a reversely transmitted Si Stokes light, the reverse Stokes light enters through the port e of the coupler 3, a part of the light is output through the port d of the coupler 3...

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Abstract

A broadband tunable multi-wavelength Brillouin fiber laser belongs to the field of fiber lasers and aims to solve the problem that the present multi-wavelength Brillouin fiber laser can not adjust the output wave constant. The technical scheme is as follows: a tunable Brillouin pumping is connected with an input / output circulator; the input / output circulator is connected with a coupler and an isolator; all output light is output via the isolator; the coupler is connected with a polarization controller; the polarization controller is connected with a wavelength division multiplexer, and the polarization controller can tune polarization loss of signals in a cavity to realize tuning of the wave constant of output signals; the wavelength division multiplexer is connected with an Er-doped fiber; a 980 nm pump laser enters into the Er-doped fiber to produce gain and amplify light signals in the cavity through the wavelength division multiplexer; the Er-doped fiber is connected with the coupler; the coupler is connected with a monomode optical fiber; the monomode optical fiber is connected with a reflective circulator; and two ports of the reflective circulator are connected for reflecting transmission light in the monomode optical fiber.

Description

technical field [0001] The invention belongs to the technical field of fiber lasers, in particular to a broadband tunable multi-wavelength Brillouin fiber laser. Background technique [0002] The application of multi-wavelength fiber lasers in wavelength division multiplexing systems (WDM) reduces the large demand for semiconductor lasers in network communication systems, further simplifies the complexity of existing WDM fiber optic communication networks, expands the application range, and reduces system costs. application cost and improve system reliability. It also has broad application prospects in distributed optical fiber sensing systems. [0003] The Brillouin erbium-doped fiber laser uses the stimulated Brillouin scattering effect in the fiber to generate multi-order Stokes light, and has the advantages of multiple output wavelengths, narrow linewidth, tunability, and simple structure. [0004] In order to generate more output wavelengths, it is necessary to meet t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/08H01S3/10
Inventor 王天枢张鹏贾青松
Owner CHANGCHUN UNIV OF SCI & TECH
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