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Controllable double wavelength optical fiber laser

A fiber laser, dual-wavelength technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of complex preparation process and cumbersome implementation, and achieve the effect of convenient implementation and simple structure

Active Publication Date: 2012-04-04
NANJING ZHONGKE SHENGUANG TECH
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  • Abstract
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Problems solved by technology

Someone proposed to use a pair of tapered fiber gratings (referred to as TFGs) to adjust the polarization state of the intracavity laser to control the output state of the dual-wavelength laser, see [“Single-and dual-wavelength switchable erbium-doped fiber ring laser based on intracavity polarization selective tilted fiber gratings”, Applied Optics, Vol.48(18), 2009: 3455~3459], but due to the complex preparation process of TFG and the strict requirements on the taper of TFG in the whole system, the specific implementation is relatively cumbersome

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  • Controllable double wavelength optical fiber laser
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereto.

[0020] see figure 1 , figure 1 It is a schematic structural diagram of the controllable dual-wavelength fiber laser of the present invention. As can be seen from the figure, the controllable dual-wavelength fiber laser of the present invention is composed of a master laser 1, a slave laser 2 and an optical isolator 3. The master laser 1 includes a pumping source 11, which is sequentially wavelength-division multiplexed A device 12, an active optical fiber 13, and an isolator 14 are connected to one port of a 2×2 coupler 15, and the second port of the 2×2 coupler 15 is respectively connected to one end of a fiber grating 16, and the 2×2 coupler 15 The third port of the said wavelength division multiplexer 12 is connected to the second input port, the fourth port of the 2×2...

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Abstract

The invention relates to a controllable double wavelength optical fiber laser, which comprises a main laser, a passive laser and a light isolator. The output laser from a laser device is injected in the main laser after passing through the light isolator, and different single-wavelength outputs and double-wavelength output with adjustable power ratio can be realized by adjusting injection power of the passive laser. The controllable double wavelength optical fiber laser solves the problem on controllable conversion of the output laser among different wavelengths and power ratio adjustment in double-wavelength output, has the characteristics of simple structure, convenient implement and the like, and can be applied to various fields.

Description

technical field [0001] The invention relates to a fiber laser, in particular to a controllable dual-wavelength fiber laser. Background technique [0002] Dual-wavelength fiber lasers are widely used in fiber optic sensing, optical device testing, optical wavelength division multiplexing systems, and terahertz generation. In some applications, it is required to be able to control the dual-wavelength fiber laser to switch between single-wavelength output and dual-wavelength output and to realize dual-wavelength laser output with adjustable power ratio. Someone proposed to use a pair of tapered fiber gratings (referred to as TFGs) to adjust the polarization state of the intracavity laser to control the output state of the dual-wavelength laser, see [“Single-and dual-wavelength switchable erbium-doped fiber ring laser based on intracavity polarization selective tilted fiber gratings", Applied Optics, Vol.48(18), 2009: 3455-3459], but because the preparation process of TFG is co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/094H01S3/10H01S3/16
Inventor 周军李震何兵魏运荣楼祺洪
Owner NANJING ZHONGKE SHENGUANG TECH