Core/sheath glass with good compatibility for rigid optical fiber

A compatible, core glass technology, applied in the field of optical fibers, which can solve the problems of decreasing the numerical aperture of optical fibers, reducing the contrast and image quality of transmitted images, etc.

Active Publication Date: 2012-06-27
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] ② Causes a significant decrease in the numerical aperture of the optical fiber
That is to say, on the new launch interface, n 2 It can be seen from the calcula

Method used

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  • Core/sheath glass with good compatibility for rigid optical fiber
  • Core/sheath glass with good compatibility for rigid optical fiber
  • Core/sheath glass with good compatibility for rigid optical fiber

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specific Embodiment approach

[0020] Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

[0021] Such as figure 1 As shown, the core and skin glass for hard optical fiber are formed by heat fusion of core glass skin glass and light-absorbing glass. Among them, ①②③ need to be heated to the softening temperature of the glass at high temperature. If the chemical compatibility of the core and skin glass is poor and the glass components penetrate each other, the refractive index at the interface between the core and the skin will change, which will affect the total reflection at the interface and reduce the The light-gathering ability of rigid optical fibers.

[0022] In addition, in order to meet the requirements of the process, the thermal properties of the three glass materials must also match each other. It is required that the softening point of the core glass is higher than that of the skin glass (about 30-100 ° C), so that the skin w...

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PUM

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Abstract

The invention relates to core/sheath glass with good compatibility for a rigid optical fiber, which comprises core glass and sheath glass. The core glass is optical glass with the refractive index (nd) of 1.850-1.865, the content of BaO is 20-45 percent, the content of La2O3 is 18-27 percent, the content of B2O3 is 12-20 percent, the content of Nb2O5, Y2O3 and Ta2O5 is 5-20 percent, the content of ZrO2 is 3-10 percent, the content of Al2O3 is 0-6 percent, the content of CaO is 0-5 percent, the content of K2O is 1-1.5 percent, and the content of Na2O is 0.5-0.8 percent. The sheath glass is optical glass with the refractive index (nd) of 1.495-1.515, the content of SiO2 is 63-69 percent, the content of B2O3 is 16-21 percent, the content of Na2O is 0.5-1 percent, the content of K2O is 7-12 percent, the content of Al2O3 is 0-6 percent, the content of CaO is 0-2.5 percent, the content of BaO is 0.2-1.8 percent, and the content of MgO is 0.5-1.5 percent. The invention has the beneficial effects that: the core glass and the sheath glass have good compatibility and are optical glass with matching thermal properties and compatible chemical properties. No neutralization reaction or harmful ion diffusion can be caused on interfaces after hot melting of the two kinds of glass.

Description

technical field [0001] The invention relates to the technical field of optical fibers, in particular to a core-skin glass for hard optical fibers with good compatibility. Background technique [0002] Hard optical fiber is a kind of glass component that can transmit images and move the image surface. Using it to make input screens or output screens of various electronic optical tubes has much better performance than using glass sheets or mica sheets as screens. It can compensate The inevitable field curvature produced by the electrostatic lens; it can avoid the dispersion of the optical image when it passes through the transparent material, and improve the resolution; it can collect and transmit most of the light energy from the dispersion of the phosphor, thereby enhancing the brightness of the screen, etc. . [0003] Numerical aperture (expressed in NA), transmittance and resolution are the main quality indicators of fiber optic components. The numerical aperture is a pa...

Claims

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Application Information

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IPC IPC(8): C03C3/155C03C3/091
Inventor 黄英贾金升
Owner CHINA BUILDING MATERIALS ACAD
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