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Optical fiber beam combiner and preparation method thereof

An optical fiber combiner and optical fiber technology, applied in the field of optical fiber, can solve the problems of poor reverse isolation performance of lasers, etc., and achieve the effects of light weight, simple manufacturing process, and good stability

Inactive Publication Date: 2013-11-27
西安中科汇纤光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide an optical fiber combiner and its preparation method, which is used to solve the technical problem of poor reverse isolation performance of lasers in the background technology

Method used

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  • Optical fiber beam combiner and preparation method thereof
  • Optical fiber beam combiner and preparation method thereof
  • Optical fiber beam combiner and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1a-Figure 1g As shown, the (6+1)×1 end-pumped fiber combiner is taken as an example to illustrate the structure and method of the present invention, and the following is also applicable to various end faces such as (N+1)×1 (1≤N≤18) , Side-pumped fiber combiner, specific input and output fibers can be configured according to needs.

[0040]The fiber combiner includes an input multimode fiber 11, an input signal fiber and an output double-clad fiber 23, a small cladding is arranged between the core of the input signal fiber and the cladding closest to the core, and a built-in small cladding The bare fiber 16 of the input signal fiber and the bare fiber 15 of the input multimode fiber are fused and tapered, and then fused with the bare fiber 22 of the output double-clad fiber.

[0041] The parameters of the input multimode fiber 11 are: core / cladding / coating diameters are 105 / 125 / 250um respectively, and the numerical aperture is 0.22; the parameters of the...

Embodiment 2

[0045] Such as Figure 2a-Figure 2h As shown, the fiber combiner includes an input multimode fiber 11, an input signal fiber and an output double-clad fiber 23, and the input signal fiber is composed of the bare fiber 13 of the conventional input signal fiber 17 fused with the bare fiber of the transition fiber, A small cladding is provided between the core of the transition fiber and the cladding closest to the core, and the bare fiber of the transition fiber is fused with the bare fiber of the input multimode fiber and then fused with the bare fiber of the output double-clad fiber.

[0046] The parameters of the input multimode fiber 11 are: core / cladding / coating diameters are 105 / 125 / 250um respectively, and the numerical aperture is 0.22; the parameters of the conventional input signal fiber 17 are: core / cladding / coating The diameters are 20 / 125 / 250um respectively, and the numerical aperture is 0.06; the parameters of the transition fiber 13 are: the diameters of the core / s...

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Abstract

The invention relates to an optical fiber beam combiner and a preparation method thereof, and the technical problem that reverse isolation performance for protection of a pump laser is poor is solved. The optical fiber beam combiner is composed of an input multimode fiber, an input signal optical fiber and an output optical fiber. After fused biconical tapering is carried out on a bare fiber of the input multimode fiber and a bare fiber of the input signal optical fiber to some extent, the bare fiber of the input multimode fiber and the bare fiber of the input signal optical fiber are perpendicularly cut from the middle to be connected with a bare fiber of the output optical fiber in a fused mode. The input signal optical fiber is an optical fiber having a cladding is formed by random optical fibers with claddings in a fused connection mode. The optical fiber beam combiner of the structure has excellent reverse isolation performance, well protects the pump laser, is especially applied to a high-power fiber laser and an optical fiber amplifier, and has the advantages of being simple in manufacturing process, high in coupling efficiency, stable in performance and the like.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, and in particular relates to an optical fiber combiner and a preparation method thereof, in particular to an optical fiber combiner applied to high-power optical fiber lasers and optical fiber amplifiers and a preparation method thereof. Background technique [0002] The emergence of double-clad fibers has made the production of high-power fiber lasers and fiber amplifiers a reality. Since E Snitzer first described cladding-pumped fiber lasers using double-clad fibers in 1988, cladding pumping technology has been widely used in the fields of fiber lasers and fiber amplifiers, and has become the preferred way to manufacture high-power fiber lasers. Compared with the ordinary single-mode fiber, the double-clad doped fiber not only satisfies the single-mode condition between the core and the inner cladding, but also has an outer cladding with a low refractive index, so that a multi-mode fiber...

Claims

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Application Information

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IPC IPC(8): G02B6/255G02B6/24
Inventor 孟祥宇付万翊
Owner 西安中科汇纤光电科技有限公司
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