A flexible optical fiber image transmission bundle with high resolution and low broken wire rate and its acid-soluble preparation method

An optical fiber image beam, high-resolution technology, applied in the direction of beam optical fiber, glass manufacturing equipment, manufacturing tools, etc., can solve the problem of monofilament uniformity and light transmittance discount, light transmittance performance influence, cladding bonding, etc. The problem is to shorten the acid dissolution time, increase the effective light-passing area, and increase the cross-section effect.

Active Publication Date: 2017-11-14
南京迈通光电科技有限公司
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  • Description
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  • Application Information

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Problems solved by technology

However, the two layers of coaxial optical fiber bundles arranged in close packing will inevitably cause bonding of the cladding after being drawn, and the light transmission performance will be affected. Great discount; re-arrangement and filling of acid-dissolved multifilaments is likely to cause a high rate of broken filaments, and the minimum bending radius of the optical fiber image transmission bundle with a diameter of 0.2mm is also debatable as low as 15mm

Method used

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  • A flexible optical fiber image transmission bundle with high resolution and low broken wire rate and its acid-soluble preparation method
  • A flexible optical fiber image transmission bundle with high resolution and low broken wire rate and its acid-soluble preparation method
  • A flexible optical fiber image transmission bundle with high resolution and low broken wire rate and its acid-soluble preparation method

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preparation example Construction

[0024] (1) Preparation of optical fiber monofilament

[0025] Optical fiber monofilaments are drawn by the tube rod method, and there are two types. One is a double-clad optical fiber monofilament with an acid-soluble glass outer cladding (acid-soluble glass-clad optical fiber monofilament), and the other is a single-clad optical fiber monofilament. The cross-section and core cross-section of optical fiber monofilament are generally circular or regular hexagonal (such as figure 2 ), it can also be a square or other regular polygons, and the diameter of the monofilament is generally 0.1-1mm.

[0026] The acid-soluble glass layer in the acid-soluble glass-clad fiber monofilament is a transition medium, which is dissolved in the acid-dissolving process, and the monofilament is separated, so that the image-transmitting bundle is transformed from rigid to flexible, and finally only in the image-transmitting bundle. The ends of the bundles retain the acid soluble layer, the purpo...

Embodiment 1

[0039] (1) Using the tube rod method, the 32mm (inscribed circle diameter) mandrel, 2mm thick cladding glass casing and 2mm thick acid-soluble glass layer casing with regular hexagonal cross-sections are drawn into an inscribed circle with a diameter of 100μm (core diameter 80μm, cladding diameter 5μm, acid soluble cladding diameter 5μm) acid-soluble glass-clad fiber monofilament.

[0040] (2) Using the tube-and-rod method, a core rod with a diameter of 36 mm (inscribed circle) and a 2 mm thick cladding glass sleeve are drawn into a diameter of an inscribed circle of 100 μm (the core diameter is 90 μm, and the cladding Single-clad optical fiber monofilament with a thickness of 5 μm).

[0041] (3) Take 145,000 optical fiber monofilaments with a regular hexagonal cross-section with a length of 600 mm, including 43,000 acid-soluble glass-clad optical fiber monofilaments. Use acid-soluble glass-clad optical fiber monofilaments to separate the regular hexagonal array units formed ...

Embodiment 2

[0045] (1) Using the tube rod method, the 32mm (inscribed circle) diameter core rod, 2mm thick cladding glass casing and 2mm thick acid-soluble glass layer casing with regular hexagonal cross-sections are drawn into an inscribed circle with a diameter of 900μm (core diameter 720μm, cladding diameter 45μm, acid soluble cladding diameter 45μm) acid soluble glass cladding fiber monofilament.

[0046] (2) Using the tube-and-rod method, a core rod with a diameter of 36 mm (inscribed circle) with a regular hexagonal cross-section and a 2 mm thick cladding glass sleeve are drawn into an inscribed circle with a diameter of 900 μm (core diameter 810 μm, cladding thickness 45μm) single-clad fiber monofilament.

[0047] (3) Take 721 optical fiber monofilaments with a regular hexagonal cross-section and a length of 600 mm, including 216 acid-soluble glass-clad optical fiber monofilaments. A regular hexagonal array unit formed by densely packing 19 single-clad optical fiber monofilaments ...

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Abstract

The invention discloses a flexible fiber image transmission beam with high resolution and low break rate and an acid solution preparing method. The method includes arranging fiber array units and acid-soluble glass cladding fiber filaments in the fiber image transmission beam structure, performing the one-step or two-step fusion drawing process to obtain fiber multifilament rods, adopting mixed acid to conduct acid solution under 35-40 DEG C, wherein the mixed acid is formed by mixing hydrochloric acid and acetic acid according to the molar ratio of 1:10-1:20, the fiber image transmission beam is composed of a plurality of fiber array units which are separated by the acid-soluble glass cladding fiber filaments, and each fiber array unit is of a regular polygonal structure formed by arranging the plurality of single-cladding fiber filaments in a close packing mode. The section of the flexible fiber image transmission beam is 1-5mm, the effective light passing area is larger than 50%, hundreds of thousands even millions of pixels can be achieved, and the resolution is 100-200 lp / mm. Compared with the traditional fiber filament acid solution method, the fiber mechanical strength is obviously improved, and the break rate is reduced by one order of magnitude.

Description

technical field [0001] The invention relates to a structural design of a high-resolution flexible optical fiber image transmission bundle and a manufacturing method with a low broken wire rate, belonging to the field of flexible optical fiber image transmission bundle manufacturing. Background technique [0002] The optical fiber image transmission bundle is made of glass or transparent plastic, consisting of thousands or even tens of thousands of single filaments (single optical fibers) with a certain length and a diameter of about 10um, which are closely arranged and bundled according to the one-to-one correspondence between the two ends. It is an optical fiber bundle that can be used for light transmission and image transmission. Compared with the traditional optical imaging system, the optical fiber image transmission bundle has the advantages of bendability, small size, light weight, radiation resistance and high temperature resistance, which makes it have a wide range ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/06C03B37/02B29C55/00
CPCC03B37/02G02B6/06
Inventor 韦玮王中跃
Owner 南京迈通光电科技有限公司
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