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Double-layer weak-coupling few-mode hollow anti-resonance optical fiber

An anti-resonance, weak coupling technology, applied in the direction of cladding fiber, microstructure fiber, light guide, etc., can solve the problems of large transmission mode limitation loss, lack of flexible optimization ability, not supporting few-mode weak coupling transmission, etc., to increase adjustment Flexibility, increase the effective refractive index difference, and limit the effect of small loss

Pending Publication Date: 2022-01-14
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the prior art lacks flexible optimization capability, does not support few-mode weak-coupling transmission, and the transmission mode has relatively large limiting loss, the present invention provides a double-layer weak-coupling few-mode hollow-core anti-resonant fiber, which has flexible optimization , can support few-mode weak-coupling transmission, the limiting loss of the transmission mode is small, and can be applied to large transmission bandwidth and high mode extinction ratio

Method used

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  • Double-layer weak-coupling few-mode hollow anti-resonance optical fiber

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Embodiment 1

[0029] Such as figure 1 with figure 2 As shown, a double-layer weakly coupled few-mode hollow-core antiresonant fiber includes an outer cladding area 1 and a core area 2; the core area 2 is inside the outer cladding area 1, and the core area 2 and the outer cladding area 1 are concentric Circle, the said outsourcing area 1 includes an outer cladding layer 3, 6 second-layer nested tubes 4, and 6 first-layer anti-resonance tubes 5; said second-layer nested tubes 4 are inscribed in said outsourcing Layer 3; the first layer of anti-resonance tube 5 is located between the second layer of nested tube 4 and the core area 2, and is connected to the second layer of nested tube 4 and the fiber core area 2 respectively Tangent; several of the second-layer nested tubes 4 have the same spacing, all of which are 1.78 μm, and are uniformly distributed in the circumferential direction, surrounding the core area 2; several of the first-layer anti-resonant tubes 5 are spaced at the same dist...

Embodiment 2

[0046] A double-layer weakly coupled few-mode hollow-core antiresonant fiber, comprising an outer cladding area 1 and a core area 2; the core area 2 is inside the outer cladding area 1, and the core area 2 and the outer cladding area 1 are concentric circles, so The outer cladding area 1 includes an outer cladding 3, 6 second-layer nested tubes 4, and 6 first-layer anti-resonance tubes 5; the second layer of nested tubes 4 is inscribed in the outer cladding 3; The first layer of anti-resonance tubes 5 is located between the second layer of nested tubes 4 and the core region 2, and are respectively tangent to the second layer of nested tubes 4 and the fiber core region 2; The intervals between several of the second layer of nested tubes 4 are the same, all of which are 1.65 μm, uniformly distributed in the circumferential direction, and surround the described fiber core area 2; between the several of the first layer of anti-resonance tubes The intervals are the same, evenly dis...

Embodiment 3

[0063] A double-layer weakly coupled few-mode hollow-core antiresonant fiber, comprising an outer cladding area 1 and a core area 2; the core area 2 is inside the outer cladding area 1, and the core area 2 and the outer cladding area 1 are concentric circles, so The outer cladding area 1 includes an outer cladding layer 3, seven second-layer nested tubes 4, and seven first-layer anti-resonant tubes 5; the second layer nested tubes 4 are inscribed in the outer cladding layer 3; The first layer of anti-resonance tubes 5 is located between the second layer of nested tubes 4 and the core region 2, and are respectively tangent to the second layer of nested tubes 4 and the fiber core region 2; The intervals between several of the second layer of nested tubes 4 are the same, all of which are 1.65 μm, uniformly distributed in the circumferential direction, and surround the described fiber core area 2; between the several of the first layer of anti-resonance tubes The intervals are the...

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Abstract

The invention relates to the technical field of optical fiber communication, and discloses a double-layer weak-coupling few-mode hollow anti-resonance optical fiber which comprises an outer wrapping area and a fiber core area. The fiber core area is arranged in the outer wrapping area, and the fiber core area and the outer wrapping area are concentric circles; the outer wrapping area comprises an outer wrapping layer, a plurality of second-layer nested tubes and a plurality of first-layer anti-resonance tubes; the second-layer nested tubes are internally tangent to the outer wrapping layer; the first-layer anti-resonance tubes are located between the second-layer nested tubes and the fiber core area and are tangent to the second-layer nested tubes and the fiber core area respectively; the plurality of second-layer nested tubes are uniformly and circumferentially distributed at equal intervals and surround the fiber core area; and the plurality of first-layer anti-resonance tubes are arranged at equal intervals, are uniformly and circumferentially distributed and surround the fiber core area. The problems that an existing optical fiber lacks flexible optimization capacity and does not support few-mode weak coupling transmission, and the limited loss of a transmission mode is large are solved.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, and more specifically, to a double-layer weakly coupled few-mode hollow-core antiresonant optical fiber. Background technique [0002] At present, with the rapid development of cloud computing, 5G, big data and other technologies, the global information field is more prosperous, and people are increasingly using data communication, which means that the amount of data circulating on the world's optical fiber network is increasing rapidly every year . In order to cope with the ever-increasing amount of data, the existing cutting-edge technology has designed a negative curvature hollow-core antiresonant fiber (ARF); as a typical hollow-core fiber, it is based on the anti-resonant reflective waveguide (ARROW) theory. A certain thickness of glass is introduced to realize the coherence and cancellation of light waves, thereby confining the mode field in the fiber core and effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
CPCG02B6/02295G02B6/02314
Inventor 李建平欧杰秦玉文付松年许鸥彭迪向梦
Owner GUANGDONG UNIV OF TECH
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