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Double-channel continuous adjustable frequency-sweep fiber laser

A fiber laser, dual-channel technology, applied in the field of swept-frequency lasers, can solve the problems of low output efficiency of single-channel swept-frequency lasers, and achieve the effects of intelligent control, cost saving and efficiency improvement

Pending Publication Date: 2020-01-10
SHENZHEN TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a dual-channel continuously adjustable frequency-sweeping fiber laser, aiming to solve the problem of low output efficiency of single-channel frequency-sweeping lasers

Method used

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  • Double-channel continuous adjustable frequency-sweep fiber laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The first laser processing module includes a second coupler 17, a first isolator 10, a first semiconductor optical amplifier 11, and a first polarization controller 13, and the first pin of the second coupler 17 is connected to the second The third pin of the circulator 16, the second pin of the second coupler 17 is connected to one end of the first isolator 10, and the other end of the first isolator 10 is connected to the first semiconductor optical amplifier 11 One end, the other end of the first semiconductor optical amplifier 11 is connected to one end of the first polarization controller 13, and the other end of the first polarization controller 13 is connected to the first pin of the first circulator 14, so The third pin of the second coupler 17 outputs a frequency-sweeping laser.

[0020] Therefore, the first polarization controller 13 is used to adjust the polarization of the optical signal in the ring cavity to ensure that the optical signals of different wave...

Embodiment 2

[0022] It also includes a second isolator 12 , one end of the second isolator 12 is connected to the first semiconductor optical amplifier 11 , and the other end of the second isolator 12 is connected to the first polarization controller 13 .

[0023] Therefore, the second isolator 12 is used to block other reflected light in the cavity, so as to ensure the unidirectional transmission of light in the annular cavity.

Embodiment 3

[0025] The second laser processing module includes a second polarization controller 18, a second semiconductor optical amplifier 20, a third isolator 21, and a first coupler 22, and one end of the second polarization controller 18 is connected to the second circulator 16 the first pin of the second polarization controller 18, the other end of the second polarization controller 18 is connected to one end of the second semiconductor optical amplifier 20, and the other end of the second semiconductor optical amplifier 20 is connected to one end of the third isolator 21, The other end of the third isolator is connected to the first pin of the first coupler 22, the second pin of the first coupler 22 is connected to the third pin of the first circulator 14, and the first The third pin of coupler 22 outputs frequency-swept laser.

[0026] Therefore, the second polarization controller 18 is used to adjust the polarization of the optical signal in the ring cavity to ensure that the opt...

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Abstract

The invention discloses a double-channel continuous adjustable frequency-sweep fiber laser. The double-channel continuous adjustable frequency-sweep fiber laser comprises a filter, a first laser processing module, a second laser processing module, a first circulator and a second circulator; one end of the filter is connected with the second pin of the first circulator; the other end of the filteris connected with the second pin of the second circulator; the first pin of the first circulator is connected with the first laser processing module; the third pin of the first circulator is connectedwith the second laser processing module; the third pin of the second circulator is connected with the first laser processing module; and the first pin of the second circulator is connected with the second laser processing module. According to the double-channel continuous adjustable frequency-sweep fiber laser, optical devices are repeatedly utilized; and therefore, the frequency-sweep fiber laser is innovatively enabled to have dual-channel output, and meanwhile, the instantaneous line width of the frequency-sweep fiber laser is narrowed, and the application efficiency of the frequency-sweepfiber laser is greatly improved.

Description

technical field [0001] The invention relates to a frequency-sweeping laser, in particular to a dual-channel continuously adjustable frequency-sweeping fiber laser. Background technique [0002] At present, frequency-sweeping lasers are mainly short-cavity frequency-sweeping lasers, long-cavity frequency-sweeping lasers, and grating polygon mirror frequency-sweeping lasers. Among them, the short-cavity frequency-sweeping laser has a single-channel output, and the frequency-sweeping speed is limited by the maximum tuning speed of the filter. The output speed of the frequency-sweeping laser is low; the single-channel output of the long-cavity frequency-sweeping laser improves the speed of the frequency-sweeping laser through the use of delay lines, but the frequency-sweeping speed cannot be adjusted, and an extremely long delay line is required, which makes the overall structure huge and the laser’s The loss increases, and miniaturization is difficult. The frequency-sweeping la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/13H01S3/131H01S3/23
CPCH01S3/067H01S3/06791H01S3/13H01S3/1317H01S3/2333
Inventor 吴旭杨志伟阮双琛欧阳德钦李春波刘敏秋陈业旺吕启涛
Owner SHENZHEN TECH UNIV