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Double-cladding hollow-core anti-resonance optical fiber with heterostructure

A heterogeneous structure, anti-resonance technology, applied in cladding fiber, optical waveguide light guide, surgery, etc., can solve the problems of delay and time-consuming follow-up treatment, and achieve the effect of reducing limit loss and avoiding leakage

Active Publication Date: 2022-04-12
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To address the time-consuming nature of biopsy and histology, which can lead to delays in subsequent treatment, in vivo imaging tools need to be developed to provide immediate cancer diagnosis

Method used

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  • Double-cladding hollow-core anti-resonance optical fiber with heterostructure
  • Double-cladding hollow-core anti-resonance optical fiber with heterostructure
  • Double-cladding hollow-core anti-resonance optical fiber with heterostructure

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Embodiment

[0043] Such as figure 1 As shown, the relevant parameters of a hollow-core anti-resonant optical fiber with a heterogeneous double cladding are as follows: the diameter of the air core 2 is 26.3-29.5 μm; the cladding tube 3 in the hollow-core anti-resonant optical fiber unit 1 The diameter is 17.945-19.258 μm; the long axis of the elliptical anti-resonant tube 4 nested in the cladding tube 3 in the hollow-core anti-resonant fiber unit 1 is 8.459-9.523 μm, the short axis is 4.9985-5.2465 μm, and the short The scale factor of the axis and the major axis is 0.6; the wall thickness of the cladding circular tube 3 in the hollow-core anti-resonance fiber unit 1 and the elliptical anti-resonance tube 4 nested therein is 0.17-0.19 μm; the hollow-core anti-resonance fiber The cladding tube 3 in the unit, the elliptical anti-resonance tube 4 nested in it, and the inner cladding 5 are made of pure quartz glass with a refractive index of 1.458; the outer cladding 7 is composed of 33 clos...

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Abstract

The invention discloses a double-cladding hollow-core anti-resonance optical fiber with a heterostructure, and relates to the technical field of special optical equipment. Comprising a hollow-core anti-resonance optical fiber unit, an inner cladding sleeving the outer layer of the hollow-core anti-resonance optical fiber unit, an outer cladding sleeving the outer layer of the inner cladding, a quartz glass supporting tube sleeving the outer layer of the outer cladding, and a polymer coating sleeving the outer layer of the quartz glass supporting tube. Each hollow-core anti-resonance optical fiber unit comprises an air fiber core and six cladding round tubes with the same size, elliptical anti-resonance tubes are nested in the cladding round tubes, the spacing distances among the cladding round tubes are the same, and the space in the air fiber core area and the space in other hollow-core anti-resonance optical fiber units are all air; the outer cladding layer is composed of 33 circular tubes with the same size, and the thickness and the material of the circular tubes are consistent with those of the cladding layer circular tubes. According to the invention, the low-loss transmission of the pump light is realized, the energy leakage is avoided, the limiting loss of the pump light is reduced, and the transmission efficiency of the inner cladding is improved.

Description

technical field [0001] The invention relates to the technical field of special optical equipment, in particular to a hollow-core anti-resonant optical fiber with a heterogeneous double-clad layer. Background technique [0002] A major problem in early cancer diagnosis is the identification of potential tumors, which requires examination of ex vivo tissues. To address the time-consuming biopsy and histological examination that may lead to delays in subsequent treatment, in vivo imaging tools need to be developed to provide immediate cancer diagnosis. Based on this demand, a nonlinear microendoscope was developed, which combines the high sensitivity and real-time performance of nonlinear imaging and spectroscopy technology with the advantages of high compactness and penetrability of flexible endoscopes. Usually in order to collect more information, such an endoscope must be able to perform two-photon excitation (TPEF), second harmonic (SHG) and third harmonic (THG) generation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02A61B1/00
Inventor 韩颖云伟隋艳茹郭晓洁管景昭
Owner YANSHAN UNIV
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