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A single-mode single-polarization hollow-core negative-curvature optical fiber

A single-polarization, negative curvature technology, applied in cladding fibers, light guides, optics, etc., to achieve the effects of enhanced energy exchange capability, simple structure, and obvious leakage effect

Active Publication Date: 2021-07-30
四川天府江东科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, although a variety of hollow-core negative-curvature fibers have been produced, few people have studied single-mode single-polarization hollow-core negative-curvature fibers.

Method used

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  • A single-mode single-polarization hollow-core negative-curvature optical fiber
  • A single-mode single-polarization hollow-core negative-curvature optical fiber
  • A single-mode single-polarization hollow-core negative-curvature optical fiber

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Embodiment

[0034] Taking the working wavelength of 2940nm as an example, the inventive principle is also applicable to each wavelength.

[0035] like figure 1 As shown, the relevant parameters of the single-mode single-polarization hollow-core negative-curvature fiber are as follows: the diameter of the core 5: 85.86 μm; the outer diameter of the cladding tube 2: 91.14 μm; the thickness of the quartz glass capillary of the nesting tube 4 and the cladding tube 2 in the X direction : 0.743 μm; Y-direction cladding tube 2 quartz glass capillary thickness: 1.60 μm; the maximum distance between the outer wall of each nested tube 4 and the cladding tube 2 inner wall: 11.76 μm; the effective mode field area is greater than 3000 [μm^2]; X polarization mode loss: 2.8×10-2dB / m; Y polarization mode loss: 57.5dB / m; High-order mode minimum loss: 3.7dB / m; Single polarization suppression ratio: 2037; High-order mode suppression ratio: 129; Birefringence difference: 1.4 ×10 -5 .

[0036] like figur...

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Abstract

The invention discloses a single-mode single-polarization hollow-core negative-curvature optical fiber, which belongs to the technical field of hollow-core negative-curvature optical fibers. The core area, the nested tubes with the same wall thickness that are respectively arranged in the cladding tubes and evenly arranged around the center of the outer cladding, and the core located in the center; the outer diameters of the four cladding tubes are equal, and the two claddings in the Y direction are The wall thickness of the tube is the same, the wall thickness of the two cladding tubes in the X direction is the same, the wall thickness of the cladding tube in the Y direction is greater than the wall thickness of the cladding tube in the X direction, and the gap between the adjacent cladding tubes in the circumferential direction is equal; The sticker is arranged in the cladding tube and corresponds to the position where the outer cladding and the cladding tube are closely arranged; the core area and other internal spaces are filled with air. At the working wavelength, the invention has good single-mode performance, the material is pure quartz, the structure is simple, the effective mode field area is large, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of hollow-core negative-curvature optical fibers, in particular to a single-mode single-polarization hollow-core negative-curvature optical fiber, which belongs to the single-mode single-polarization microstructure optical fiber. Background technique [0002] When the optical energy or optical signal propagates in the optical fiber, due to the incompleteness of the optical fiber structure or the surface unevenness, it is easy to cause the dispersion of the polarization mode and affect the stability of the optical device function. Therefore, someone proposed a single-mode single-polarization fiber. The principle is that the polarization mode loss on one axis is very high and cannot propagate in the fiber; the polarization mode loss on the other axis is very low and can normally propagate in the fiber, ensuring optical fiber The energy or optical signal is output stably under the conditions of fiber bending or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/032G02B6/02
CPCG02B6/02G02B6/032
Inventor 韩颖李正然朱维震周凡迪杨骐豪龚琳王彦杨慢王伟
Owner 四川天府江东科技有限公司
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