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Tapered fiber-based tunable dual-wavelength mode-locked fiber laser

A fiber laser and tapered fiber technology, which is applied in lasers, laser components, phonon exciters, etc., can solve the problems of unable to solve the competition of the tapered fiber suppression mode, the inability to accurately control the wavelength, etc., and achieve superior performance and use Wide range and high light-to-light conversion efficiency

Inactive Publication Date: 2016-11-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0012] In order to solve the technical problems in the background technology, the present invention provides a tunable dual-wavelength mode-locked fiber laser based on a tapered fiber, which solves the problem that the birefringent fiber technology of lasers in the past cannot precisely control the wavelength and cannot solve the problem of using a tapered fiber. Technical issues arising from inhibiting mode competition

Method used

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  • Tapered fiber-based tunable dual-wavelength mode-locked fiber laser
  • Tapered fiber-based tunable dual-wavelength mode-locked fiber laser
  • Tapered fiber-based tunable dual-wavelength mode-locked fiber laser

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.

[0039] Such as Figure 3-Figure 7 As shown, the tunable dual-wavelength mode-locked fiber laser based on tapered fiber,

[0040] Including (2+1)×1 beam combiner 2, thulium-doped fiber 3), coupler 4, polarization controller 7, polarization-independent isolator 8, tapered fiber 9 and single-wall carbon nanotube 10 connected end to end in sequence , the (2+1)×1 beam combiner 2 is also connected to a pumping light source 1;

[0041] in,

[0042] The coupling ratio of the coupler 4 is 10:90, including two ports of a 10% output port and a 90% output port, the 10% output port is connected with an output optical fiber 5, and the 90% output port is connected to the polarized The controller 7 is connected;

[0043] The modulation period of the tapered fiber 9 is 7.0 nanometers, and...

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Abstract

The invention discloses a tapered fiber-based tunable dual-wavelength mode-locked fiber laser, which comprises a (2+1)*1 beam combiner, a thulium-doped fiber, a coupler, a polarization controller, a polarization independent isolator, a tapered fiber and a single-walled carbon nanotube which are sequentially connected end to end, wherein the (2+1)*1 beam combiner is also connected with a pump light source; the coupling ratio of the coupler is 10 to 90; the coupler comprises a 10% output port and a 90% output port in all; the 10% output port is connected to an output fiber; the 90% output port is connected to the polarization controller; the modulation period of the tapered fiber is 6.8-7.2nm; and the taper twist of the tapered fiber is 7.0-7.5microns. Through the tapered fiber with specific modulation period and modulation depth, the problem of laser mode competition is successfully solved by the tapered fiber; and output of tapered fiber-based tunable dual-wavelength mode-locked fiber laser light with a 2micron waveband is achieved.

Description

technical field [0001] The invention relates to a tunable dual-wavelength mode-locked fiber laser, which belongs to the field of fiber lasers, and more specifically relates to a tunable dual-wavelength mode-locked fiber laser based on a tapered fiber. Background technique [0002] Ultrashort pulse laser has a wide range of applications in optical fiber communication, biotechnology, medical treatment, laser spectroscopy, ultrafine processing, time-resolved spectroscopy and other fields. Mode-locking technique is a common method to obtain ultrashort optical pulses. Therefore, the research on mode-locked fiber lasers outputting femtosecond pulses has become a hot spot in the field of laser technology in recent years. Generally speaking, mode-locked fiber lasers can be divided into two categories according to different mode-locking methods: one is active mode-locked fiber lasers, and an intensity modulator or phase modulator driven by a microwave signal must be inserted into th...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/101H01S3/11H01S3/098
CPCH01S3/067H01S3/101H01S3/1106
Inventor 李剑峰翟波罗鸿禹王亚洲刘永
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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