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 rea

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

Examples

Experimental program
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Example Embodiment

[0017] Implementation mode one

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

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

Example Embodiment

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

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

Example Embodiment

[0022] The difference between the third embodiment and the first and second embodiments is

[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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