Multi-wavelength fiber laser with miniature resonant cavity structures

A fiber laser, resonant cavity technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of discontinuous high-quality multi-wavelength laser output, unstable system, low output power, etc., and achieve a simple structure. , the effect of high optical power and narrow frequency band width

Inactive Publication Date: 2011-05-25
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the current problems existing in fiber lasers with high-quality multi-wavelength laser output: complex structure, discontinuous high-quality multi-wavelength laser output, insufficient stability of the system, low output power, and high cost

Method used

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  • Multi-wavelength fiber laser with miniature resonant cavity structures
  • Multi-wavelength fiber laser with miniature resonant cavity structures
  • Multi-wavelength fiber laser with miniature resonant cavity structures

Examples

Experimental program
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Effect test

Embodiment approach 1

[0019] Embodiment 1, a multi-wavelength fiber laser with a micro-resonator structure, such as figure 1 shown. The laser structure includes: an optical fiber composed of a core 1 and a cladding 2, the first and second fiber gratings 31 and 32 are respectively written at both ends of the core 1, and the fiber gratings between the first and second fiber gratings 31 and 32 are The first, second and third micro-resonant cavities 41 , 42 and 43 , and the pumping laser 5 .

[0020] The first, second, and third microresonators 41, 42, and 43 are all composed of a ring and two tangent lines, and are all located at the junction of the core and the cladding, and are exposed to the optical fiber by an ultraviolet laser. The left tangent parts of each resonant cavity pass through the first fiber grating 31 .

[0021] The parameters of each part are: the radius of the core 1 is 2 microns; the thickness of the cladding 2 is 60.5 microns; the first fiber grating 31 is totally reflective to ...

Embodiment approach 2

[0022] Embodiment 2, a multi-wavelength fiber laser with a micro-cavity structure, such as figure 2 shown. The laser structure includes an optical fiber composed of a core 1 and a cladding 2. First and second fiber gratings 31 and 32 are respectively written at both ends of the core 1, and the first and second fiber gratings 31 and 32 are located between the first and second fiber gratings. 1. Second, the micro-resonator bodies 41 and 42 and the pump laser 5 .

[0023] The first and second micro-resonant cavities 41, 42 are all made of a ring and two tangent lines. The first micro-resonant cavity 41 is located in the fiber core, and the second micro-resonant cavity 42 is located between the fiber core and the fiber core. The joints of the cladding are formed by exposing the optical fiber with a femtosecond laser, and the left tangent parts of each resonant cavity pass through the first fiber grating 31 .

[0024] The parameters of each part are: the radius of the core 1 is ...

Embodiment approach 3

[0025] Embodiment 3, a multi-wavelength fiber laser with a micro-cavity structure, such as image 3 shown. The laser structure includes an optical fiber composed of a core 1 and a cladding 2. First and second fiber gratings 31 and 32 are respectively written at both ends of the core 1, and the first and second fiber gratings 31 and 32 are located between the first and second fiber gratings. 1. The second, third, and fourth micro-resonant cavities 41 , 42 , 43 , and 44 , and the pump laser 5 .

[0026] The first, second, third, and fourth micro-resonators 41, 42, 43, and 44 are all composed of a ring and two tangent lines, and are all located in the fiber core. They are formed by the femtosecond laser through the pair The optical fiber is exposed to form, and the tangent part on the left side of each resonant cavity passes through the first fiber grating 31 .

[0027] The parameters of each part are: the radius of the fiber core 1 is 9 microns; the thickness of the cladding 2...

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Abstract

The invention disclose a multi-wavelength fiber laser with miniature resonant cavity structures and relates to the field with requirements for high quality of optical-frequency bandwidth and the requirement of ouputting multiple wave lengths. The multi-wavelength fiber laser is used for solving the following technical problems: the structure of a fiber laser with multi-wavelength laser output is complicated, the output of high-quality multi-wavelength laser is not continuous, and the system is unstable and has high cost. The multi-wavelength fiber laser strcuturaly comprises an optical fiber formed by a fiber core (1) and a cladding (2), fiber bragg gratings (3), a miniature resonant cavity (4) in the optical fiber and a pumping source (5), and is characterized in that for the manufacture of the miniature resonant cavities, an ultraviolet laser or a femtosecond laser are adopted for exposing the optical fiber, so that the refractive index of the exposed part is higher than that of a peripheral medium, thus a plurality of miniature resonant cavity structures are generated; and each miniature resonant cavity resonates with laser with a specific wave length, and the output of multiple wavelengths can be realized by dint of the synthetic function of the plurality of miniature resonant cavities. The multi-wavelength fiber laser provided by the invention is mainly applied in fiber-optical communication.

Description

technical field [0001] The invention relates to a multi-wavelength fiber laser. It is especially used in fields that require high-quality optical frequency bandwidth and output multiple wavelengths at the same time. Background technique [0002] Nowadays, optical communication has become the main means of long-distance and large-capacity transmission of information. The development of lasers for special communications is progressing rapidly, and various reports about lasers are coming frequently. First of all, the basic requirements for lasers used for communication are mostly single-frequency characteristics, power characteristics, and stability. [0003] In the environment of the rapid development of modern optical communication technology, various types of lasers emerge in endlessly, especially the current wavelength division multiplexing technology is becoming more and more mature, especially when dense wavelength division multiplexing technology is widely used in optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/082
Inventor 宁提纲温晓东裴丽李晶周倩郑晶晶冯素春
Owner BEIJING JIAOTONG UNIV
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