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Tunable multi-wavelength fiber laser with variable all-fiber wavelength interval

A fiber laser and wavelength spacing technology, which is applied in the fields of optical fiber communication and instrumentation, can solve problems such as changes, and achieve the effect of changing the number of wavelengths, increasing the number, and stabilizing laser output

Pending Publication Date: 2019-12-31
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to solve the problem that many fiber lasers cannot change the wavelength interval while realizing the tunable output wavelength range, and proposes a tunable multi-wavelength laser with variable output wavelength interval of all fibers fiber-optic laser

Method used

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  • Tunable multi-wavelength fiber laser with variable all-fiber wavelength interval
  • Tunable multi-wavelength fiber laser with variable all-fiber wavelength interval
  • Tunable multi-wavelength fiber laser with variable all-fiber wavelength interval

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Embodiment approach 1

[0018] A tunable multi-wavelength fiber laser with variable wavelength spacing, such as figure 1 As shown, it includes a pump light source (01), a wavelength division multiplexer (02), an erbium-doped fiber (03), a fiber circulator (04), a fiber 3dB coupler (05), a polarization controller (06 ), polarization-maintaining fiber one (07), polarization-maintaining fiber two (08), polarization-maintaining fiber two (09), polarization-dependent isolator (10), polarization-maintaining fiber three (11), polarization-maintaining fiber three (12), High nonlinear optical fiber (13), two optical fiber couplers (14).

[0019] The pump light source 01 is connected to the input end 021 of the wavelength division multiplexer 02, the left port 023 of the wavelength division multiplexer is connected to one end of the erbium-doped optical fiber 03, and the port 2 022 on the right side of the wavelength division multiplexer is connected to the optical fiber The port three 142 of the coupler two ...

Embodiment approach 2

[0020] The difference between the second embodiment and the first embodiment is that

[0021] The doped optical fiber 03 is an ytterbium-doped optical fiber, the length of the polarization-maintaining optical fiber 3 12 is less than 0.15 meters, and the length of the high nonlinear optical fiber 13 is greater than 100 meters.

Embodiment approach 3

[0022] Embodiment 3 differs from Embodiment 1 and Embodiment 2 in that

[0023] The doped fiber 03 is a thulium-doped fiber, the length of the polarization-maintaining fiber 3 12 is less than 2 meters, and the length of the highly nonlinear fiber 13 is more than 150 meters.

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Abstract

The invention relates to a tunable multi-wavelength fiber laser with a variable all-fiber wavelength interval, and belongs to the fields of optical fiber communication and instrumentation to simultaneously realize the tuning of a wavelength range and the change of the wavelength interval. In the fiber laser, a polarization controller 1, a polarization maintaining fiber 1, a polarization controller2, and a polarization maintaining fiber 2 are connected between a port 6 and a port 7 to form a two-stage Sagnac fiber filter. A port 9 is connected to a polarization controller 3. The port of the polarization controller 3 is connected to a polarization maintaining fiber 3 to form a Lyot filter. Adjusting the polarization controller 3 can realize the tuning of the wavelength range. Adjusting thepolarization controller 1 and the polarization controller 2 can realize the change of the wavelength interval. Highly nonlinear fibers can form a four-wave mixing effect, suppress wavelength competition, and can change the number of wavelengths. The laser is flexible in output wavelength, is beneficial to the application in optical wavelength division multiplexing systems.

Description

technical field [0001] The invention relates to a tunable multi-wavelength optical fiber laser with variable all-fiber wavelength interval, which belongs to the fields of optical fiber communication and instrumentation. Background technique [0002] Since the 21st century, human society has undergone earth-shaking changes, the field of science and technology has developed rapidly, and people's lives are changing with each passing day. The advent of the information age has greatly increased people's requirements for communication speed and communication capacity, and optical fiber communication has emerged as the times require and has played an important role. At present, the 100G optical fiber transmission network has been commercialized. With the exponential growth of network data volume, the related technologies of the 400G optical fiber transmission network are maturing day by day, and the standardization work is also steadily advancing. In optical networks, wavelength d...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S3/067H01S3/10
CPCH01S3/0092H01S3/06712H01S3/06716H01S3/10023H01S3/10061
Inventor 赵琦裴丽宁提纲郑晶晶解宇恒李晶
Owner BEIJING JIAOTONG UNIV
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