Tunable laser based on dual interference of dual-core optical fiber and Sagnac ring

A technology for tuning lasers and dual-core optical fibers. It is applied in the fields of instrumentation and optical fiber communications. It can solve the problems that fiber lasers do not have changes in the number of wavelengths and wavelength intervals, and achieve the effect of increasing the tunable range of output wavelengths and flexibly changing them.

Inactive Publication Date: 2020-09-25
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It should be pointed out that the fiber lasers built by the above methods do not have the performance to simultaneou

Method used

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  • Tunable laser based on dual interference of dual-core optical fiber and Sagnac ring
  • Tunable laser based on dual interference of dual-core optical fiber and Sagnac ring
  • Tunable laser based on dual interference of dual-core optical fiber and Sagnac ring

Examples

Experimental program
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Example Embodiment

[0020] Implementation mode one

[0021] Tunable laser based on dual-core fiber and Sagnac ring dual interference, such as figure 1 As shown, it includes pump light source 01, wavelength division multiplexer 02, gain fiber 03, fiber 04 with high nonlinear coefficient, fiber coupler 05, polarization controller 06, polarization maintaining fiber 07, dual-core fiber 08. Fiber coupler two 09, polarization controller two 10.

[0022] The pump light source 01 is connected to the input end of the wavelength division multiplexer 02, the left port one 022 of the wavelength division multiplexer is connected to one end of the gain fiber 03, and the left port two 031 of the gain fiber 03 has a high nonlinear coefficient. The left side port 03 041 of the optical fiber 04 with high nonlinear coefficient is connected to the port four 051 of the optical fiber coupler 05, and the port five 061 of the optical fiber coupler 05 and the port six 071 are connected in order Polarization controller 06 and...

Example Embodiment

[0023] Implementation mode two

[0024] Tunable laser based on dual-core fiber and Sagnac ring dual interference, such as figure 1 As shown, the pump light source 01 is connected to the input end of the wavelength division multiplexer 02, the left port one 022 of the wavelength division multiplexer is connected to one end of the gain fiber 03, and the left port two 031 of the gain fiber 03 is connected to the high The non-linear coefficient optical fiber 04 is connected. The left port three 041 of the optical fiber 04 with high non-linear coefficient is connected to the port four 051 of the optical fiber coupler 05. The optical fiber coupler 05 is connected between the port five 061 and the port six 071. Connect polarization controller 06 and polarization maintaining fiber 07 in sequence. The port seven 081 on the right side of the wavelength division multiplexer 02 is connected to the dual-core optical fiber 08, the right port of the dual-core optical fiber 08 is connected to th...

Example Embodiment

[0025] Implementation mode three

[0026] Tunable laser based on dual-core fiber and Sagnac ring dual interference, such as figure 1 As shown, the pump light source 01 is connected to the input end of the wavelength division multiplexer 02, the wavelength division multiplexer 02 is connected to one end of the gain fiber 03, and the left port two 031 of the gain fiber 03 is connected to the fiber with high nonlinear coefficient. 04 connected,

[0027] The port three 041 is connected to the port four 051 of the fiber coupler one 05, and the polarization controller one 06 and the polarization maintaining fiber 07 are connected in order between the port five 061 and the port six 071 of the fiber coupler one 05. The port seven 081 on the right side of the wavelength division multiplexer 02 is connected to the dual-core optical fiber 08, the right port of the dual-core optical fiber 08 is connected to the port eight 091 of the optical fiber coupler two 09, and the port nine 101 and port ...

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Abstract

The invention provides a tunable laser based on dual interference of a dual-core optical fiber and a Sagnac ring. Tuning of a wavelength range, change of the number of wavelengths and change of wavelength intervals can be achieved at the same time. In the optical fiber laser, a polarization controller I and a polarization maintaining optical fiber are connected between two ports of an optical fiber coupler I to form a Sagnac optical fiber filter, so that wavelength tuning in a gain range is realized. The wavelength interval can be changed by adjusting the optical fiber stress frame of the double-core optical fiber Mach-Zehnder filter. By using the optical fiber with a high nonlinear coefficient, a four-wave mixing effect can be formed, wavelength competition is inhibited, and stable wavelength output is facilitated. Meanwhile, the change of the number of wavelengths can be realized by changing the pumping power. The laser is simple in structure, flexible in output wavelength and beneficial to application in optical communication and optical wavelength division multiplexing systems.

Description

technical field [0001] The invention relates to a tunable laser based on dual-core optical fiber and Sagnac ring double interference, and belongs to the fields of optical fiber communication and instrumentation. Background technique [0002] With the advent of the information age, earth-shaking changes have taken place in human society. People's requirements for communication speed and communication capacity have been greatly improved. Optical fiber communication came into being and played an important role. Due to the development of high-capacity optical fiber communication networks, wavelength division multiplexing technology has been widely used, especially dense wavelength division multiplexing (DWDM) has become the most economical and effective way to upgrade and expand optical fiber communication systems. The multi-wavelength fiber laser with the advantages of simple structure, good compatibility, stable output laser, and low price provides an ideal light source for DW...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/10
CPCH01S3/06712H01S3/06737H01S3/1003
Inventor 赵琦裴丽王建帅宁提纲郑晶晶李晶解宇恒
Owner BEIJING JIAOTONG UNIV
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