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Optical fiber image transmission element with low stray light crosstalk and preparation method thereof

An astigmatism crosstalk type, optical fiber image transmission technology, which is applied in the direction of bundled optical fibers, can solve the problems of low absorption efficiency of stray light, failure to meet the application requirements of optical fiber image transmission components, and unclear imaging, so as to reduce stray light crosstalk and improve Imaging clarity, the effect of high imaging clarity

Active Publication Date: 2019-04-19
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the light-absorbing glass commonly used at home and abroad has a circular structure, and its thermal performance is similar to that of the core-skin composite optical fiber. Due to the small contact area between the light-absorbing glass filament and the core-skin composite optical fiber, it can only ensure that the incident light Only stray light on the glass can be absorbed, and stray light beyond this range cannot be absorbed and form crosstalk
Therefore, at present, traditional optical fiber image transmission components generally have the problems of low absorption efficiency of stray light and unclear imaging, which cannot meet the application requirements of optical fiber image transmission components with higher definition requirements.

Method used

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  • Optical fiber image transmission element with low stray light crosstalk and preparation method thereof

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preparation example Construction

[0037] Another embodiment of the present invention proposes a method for preparing a low stray light crosstalk optical fiber image transmission element, which includes the following steps:

[0038] (1) Process high-refractive-index fiber core glass, low-refraction-index skin glass, and light-absorbing glass into cylindrical core glass rods, skin glass tubes, and light-absorbing glass rods respectively; insert the core glass rods into Inside the leather glass tube, heated and drawn into a cylindrical single optical fiber; wherein the core glass rod and the leather glass tube are closely attached; the light-absorbing glass rod is heated and drawn into a light-absorbing glass filament;

[0039] (2) Arrange the single optical fibers in parallel, and tightly stack them into multiple layers and place them in a row of rod moulds, insert the light-absorbing glass filaments into the gaps between the single optical fibers to obtain optical fiber bundles, and place the Bundle the optical...

Embodiment 1

[0050] (1) The refractive index is 1.65, the softening temperature is 700°C, and the expansion coefficient is 70×10 -7 High-refractive-index core glass at / °C, with a refractive index of 1.45, a softening temperature of 670°C, and an expansion coefficient of 60×10 -7 / ℃ low refractive index leather glass and softening temperature is 550℃, expansion coefficient is 85×10 -7 The light-absorbing glass at / ℃ is processed into cylindrical core glass rods, leather glass tubes, and light-absorbing glass rods; the core glass rods are inserted into the skin glass tubes, heated and drawn into cylindrical single optical fibers; Wherein the core glass rod and the skin glass tube are closely attached; the light-absorbing glass rod is heated and drawn into a light-absorbing glass filament; wherein, the light-absorbing glass component is (by weight percentage): SiO 2 :60%, B 2 o 3 : 5%, ∑(Na 2 O+K 2 O): 15%, ∑(MgO+CaO+BaO): 10%, Fe 2 o 3 : 1%, Co 2 o 3 : 3%, Ni 2 o 3 : 5%, MnO 2 :...

Embodiment 2

[0056] (1) The refractive index is 1.95, the softening temperature is 750°C, and the expansion coefficient is 80×10 -7 / ℃ high refractive index core glass, the refractive index is 1.65, the softening temperature is 700℃, and the expansion coefficient is 80×10 -7 / ℃ low refractive index skin glass and softening temperature is 600℃, expansion coefficient is 100×10 -7 The light-absorbing glass at / ℃ is processed into cylindrical core glass rods, leather glass tubes, and light-absorbing glass rods; the core glass rods are inserted into the skin glass tubes, heated and drawn into cylindrical single optical fibers; Wherein the core glass rod and the skin glass tube are closely attached; the light-absorbing glass rod is heated and drawn into a light-absorbing glass filament; wherein, the light-absorbing glass component is (by weight percentage): SiO 2 :70%, B 2 o 3 : 2%, ∑(Na 2 O+K 2 O): 10%, ∑(MgO+CaO+BaO): 5%, Fe 2 o 3 : 2%, Co 2 o 3 : 3%, Ni 2 o 3 : 4%, MnO 2 : 3%, Al ...

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Abstract

The invention relates to a low stray light crosstalk type optical fiber image transmission component and a manufacturing method thereof. The optical fiber image transmission component comprises at least three cylindrical single optical fibers which are tightly stacked in parallel, wherein a space encircled by position at which any two of the three single optical fibers are tangent forms a light absorption glass jack; each light absorption glass jack is filled with light absorption glass; and the single optical fibers are composed of cylindrical fiber core glass rods with high refractive index and channel glass pipes with low refractive index coated outside the cylindrical fiber core glass with high refractive index. According to the low stray light crosstalk type optical fiber image transmission component disclosed by the invention, the stacking space is completely filled with the absorption glass, the stray light crosstalk of the optical fiber image transmission component is reduced, and the imaging definition is improved.

Description

technical field [0001] The invention relates to an optical fiber image transmission element, in particular to an optical fiber image transmission element with low stray light crosstalk and a preparation method thereof. Background technique [0002] Optical fiber image transmission components are optical components formed by regular arrangements of millions of micron-scale optical fibers, including fiber optic panels, fiber optic image inverters, fiber optic cones, and fiber optic image transmission bundles. Optical fiber image transmission components have the characteristics of large numerical aperture and zero optical thickness, and have important applications in the fields of optical image transmission and optical coupling. [0003] The optical fiber in the optical fiber imaging component is composed of a high refractive index core and a low refractive index skin. The input light that meets the total reflection condition can be transmitted from one end to the other inside ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/06
CPCG02B6/06
Inventor 张洋贾金升张兵强孙勇王云刘娟侯伟杰
Owner CHINA BUILDING MATERIALS ACAD
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