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Solid anti-resonance optical fiber for realizing mid-infrared band cut-off-free single-mode transmission

An anti-resonance, non-cut-off technology, applied in cladding fibers, optical waveguides and light guides, etc., can solve the problems of difficult to achieve large-scale mass production, complex drawing process of hollow-core fiber structures, and lack of structural stability. Excellent laser single-mode transmission characteristics, good technology transformation foundation, and good market prospects

Inactive Publication Date: 2021-04-16
TIANJIN UNIV
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Problems solved by technology

However, due to the complex design and drawing process of the hollow-core optical fiber structure, and the design of the hollow-core structure is easy to collapse and does not have good structural stability, it is difficult to achieve real large-scale mass production

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  • Solid anti-resonance optical fiber for realizing mid-infrared band cut-off-free single-mode transmission
  • Solid anti-resonance optical fiber for realizing mid-infrared band cut-off-free single-mode transmission
  • Solid anti-resonance optical fiber for realizing mid-infrared band cut-off-free single-mode transmission

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be explained that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] figure 1 Schematic diagram of the structure of the solid-core anti-resonant optical fiber designed for the embodiment of the present invention to realize unlimited single-mode transmission. It consists of a tubular outer cladding 2, a solid core 1, six circular solid core tubes 3 embedded in the solid core 1, and a tubular inner cladding 4 wrapped outside the circular solid core tube 3. The six circular solid-core small tubes 3 described above are evenly distributed in the solid core 1 without contact with each other, forming a node-free structure. A laser with a wavelength of λ = 3 μm is passed through the structured fiber, and software simulation is used to prove the uncut s...

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Abstract

The invention provides a solid anti-resonance optical fiber for realizing mid-infrared band cut-off-free single-mode transmission, which is characterized by comprising a solid fiber core, a tubular outer cladding layer coated outside the solid fiber core, and six circular solid small tubes coated with tubular inner cladding layers outside the solid fiber core, wherein the circular solid small tubes are uniformly distributed in the solid fiber core in a surrounding manner without contact with each other to form a node-free structure; the solid fiber core and the round solid small tubes are made of materials with low refractive indexes, and the tubular outer cladding layers and the tubular inner cladding layers are made of materials with high refractive indexes, so that a completely solid fiber structure is formed.

Description

technical field [0001] The invention relates to a single-mode solid-core optical fiber based on anti-resonance characteristics, which belongs to the field of special optical fiber design and also belongs to the field of mid-infrared laser transmission design. Background technique [0002] Ordinary solid-core silica fiber, as a traditional medium for transmitting light waves, has many intrinsic defects in practical applications, such as nonlinear effects, dispersion effects, photo-induced damage effects, and opacity in the ultraviolet and mid-infrared bands. These inherent physical problems are difficult to be effectively solved within the framework of traditional optical fibers, thus becoming a fundamental obstacle that greatly restricts the development of optical fiber transmission technology. Therefore, it is necessary to design a new optical fiber with excellent transmission performance and stable material and structural properties. [0003] In the early 21st century, th...

Claims

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Application Information

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IPC IPC(8): G02B6/02
Inventor 史伟张帅孙帅盛泉姚建铨
Owner TIANJIN UNIV
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