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Improved tail fiber

An improved, pigtailed technology applied to pigtails. It can solve the problems of uncertain shape, large bending loss, affecting the quality of optical devices, and achieve the effect of ensuring quality

Inactive Publication Date: 2006-05-03
张泳翔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the bending exceeds the allowable bending radius of the optical fiber, a large bending loss will be generated, which will affect the quality of the optical device
[0003] For ordinary pigtails, the opening length of the bell mouth (tapered cup mouth) of the glass capillary is only 1 to 2.5 mm long, the opening angle varies from large to small, and the shape is uncertain, so it can only meet the fixing requirements of a single optical fiber. Obviously The anti-bending requirements of more than two optical fibers cannot be guaranteed

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] An improved pigtail has a glass capillary, the glass capillary has a tube body 1, and a bell mouth 2, and two identical optical fibers 3 and 4 are installed in the glass capillary, and the bare core of the fiber is from the opening of the bell mouth to the tube body. The offset value of the center h=r 1 -r 2 , the length of the bell mouth L≥2(R×h) 1 / 2 +0.5mm, and the inner diameter of the bell mouth at the length L-0.5mm≤4r 1 , where r 1 Be the radius of optical fiber (that is, the radius of optical fiber protective layer 5), r 2 is the radius of the bare fiber 6. Where R is the allowable bending radius of the fiber.

Embodiment 2

[0023] An improved pigtail has a glass capillary. The glass capillary has a tube body 9 and a bell mouth 10. Four identical optical fibers 11, 12, 13, and 14 are installed in the glass capillary. The bare core of the optical fiber is from the opening of the bell mouth to the tube body. The offset value of the center of the fiber core h=2 1 / 2 (r 1 -r 2 ), the length of the bell mouth L≥2(R×h) 1 / 2 +0.5mm, and the inner diameter of the bell mouth at the length L-0.5mm≤2 1 / 2 ×2r 1 +2r 1 , where r 1 is the radius of the optical fiber (that is, the radius of the optical fiber protective layer 7), r 2 is the radius of the bare fiber 8.

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Abstract

The invention discloses an improved tail fiber which comprises: a glass capillary, at least two fiber optics, a pipe, a belling inside the glass capillary, wherein the length of the belling is Lí¦2(Rí

Description

Technical field: [0001] The invention relates to a pigtail. Background technique: [0002] When the optical fiber is cemented and fixed in a precision glass capillary, a single optical fiber can be glued and fixed in the glass capillary flatly and naturally without bending, but when two or more optical fibers are glued and fixed together, due to the head stripping The optical fiber cladding of the protective coating is much smaller than the original diameter of the optical fiber, so it is bound to produce a bend at the bell mouth (conical cup mouth) of the glass capillary. Once the bending exceeds the allowable bending radius of the optical fiber, a large bending loss will be generated, thereby affecting the quality of the optical device. [0003] For ordinary pigtails, the opening length of the bell mouth (tapered cup mouth) of the glass capillary is only 1 to 2.5mm long, the opening angle varies from large to small, and the shape is uncertain, so it can only meet the fixi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036
Inventor 张泳翔
Owner 张泳翔
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