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Bending resistant optical fiber

A bending-resistant, optical fiber technology, applied in the direction of glass optical fiber, clad optical fiber, optical waveguide light guide, etc., can solve the problems of optical fiber breakage and unsatisfactory optical fiber bending resistance, and achieve lower use requirements, high curing and ductility , a wide range of effects

Active Publication Date: 2016-06-15
江苏华脉光电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, the bending radius of the optical fiber by the user or construction personnel is often smaller than the recommended value, so the optical fiber often breaks, that is to say, the bending resistance of the optical fiber is not ideal

Method used

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Examples

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Effect test

Embodiment 1

[0036] A bend-resistant optical fiber comprising a core 1, a cladding 2 outside the core, a coating 3 outside the cladding, and a colored layer 5 outside the coating, characterized in that: There is an anti-bending outer layer 4 between the coating layer and the colored layer; the cladding diameter is 123-127 μm, the core / cladding concentricity error is ≤0.6 μm, and the cladding out-of-roundness is ≤1.0%. The diameter of the layer is 210-230 μm, the diameter of the anti-bending outer layer is 225-245 μm, and the diameter of the colored layer is 240-260 μm; after the bending-resistant optical fiber is loosely wound 100 times with a bending radius of 30 mm, the additional attenuation of 1310 nm wavelength is ≤0.05 dB / Km, the additional attenuation of 1383nm wavelength≤0.05dB / Km, the additional attenuation of 1550nm wavelength≤0.1dB / Km, the additional attenuation of 1625nm wavelength≤0.1dB / Km; take any bending-resistant optical fiber with a length of not less than 10cm, and the b...

Embodiment 2

[0053] A bend-resistant optical fiber comprising a core 1, a cladding 2 outside the core, a coating 3 outside the cladding, and a colored layer 5 outside the coating, characterized in that: There is also a bending-resistant inner layer 10 between the core and the cladding; the diameter of the cladding is 123-127 μm, the concentricity error of the core / cladding is ≤0.6 μm, the out-of-roundness of the cladding is ≤1.0%, and the coating layer The diameter is 235-250 μm, the diameter of the anti-bending inner layer is 8.5-20 μm, and the diameter of the colored layer is 240-260 μm; after the bending-resistant optical fiber is loosely wound 100 times with a bending radius of 30 mm, the additional attenuation of 1310nm wavelength is ≤0.05dB / Km, 1383nm wavelength additional attenuation ≤ 0.05dB / Km, 1550nm wavelength additional attenuation ≤ 0.1dB / Km, 1625nm wavelength additional attenuation ≤ 0.1dB / Km; any bend-resistant fiber with a length of not less than 10cm is taken, and the bend...

Embodiment 3

[0070] A bend-resistant optical fiber comprising a core 1, a cladding 2 outside the core, a coating 3 outside the cladding, and a colored layer 5 outside the coating, characterized in that: There is an anti-bending outer layer 4 between the coating layer and the colored layer, and an anti-bending inner layer 10 between the core and the cladding; the diameter of the cladding is 123-127 μm, and the core / cladding concentricity Error ≤ 0.6 μm, cladding out of roundness ≤ 1.0%, coating layer diameter is 210-230 μm; anti-bending inner layer diameter is 8.5-20 μm; anti-bending outer layer diameter is 225-245 μm; coloring layer diameter is 240 ~260μm; after the bend-resistant optical fiber is loosely wound 100 times with a bending radius of 30mm, the additional attenuation of 1310nm wavelength is ≤0.05dB / Km, the additional attenuation of 1383nm wavelength is ≤0.05dB / Km, and the additional attenuation of 1550nm wavelength is ≤0.1dB / Km, 1625nm wavelength additional attenuation ≤ 0.1dB / K...

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Abstract

The invention belongs to the technical field of optical fibers, and particularly relates to a bending resistant optical fiber. The bending resistant optical fiber comprises a fiber core, a covering layer located outside the fiber core, a coating layer located outside the covering layer and a coloring layer located outside the coating layer, and is characterized in that an outer bending resistant layer is further arranged between the coating layer and the coloring layer. A section of bending resistant optical fiber greater than or equivalent to 10 cm in length is taken at will, and after the two ends of the bending resistant optical fiber penetrate through a cylindrical hole of the internal diameter of 2 mm in the same direction at the same time, the bending resistant optical fiber is not fractured. In the bending resistant optical fiber, the refractive index of the fiber core is larger than the refractive index of the covering layer, the refractive index of the covering layer is larger than the refractive index of the coating layer, and the refractive index of the coating layer is larger than the refractive index of the outer bending resistant layer. The bending resistant optical fiber has the main advantages of being simple in structure and easy to implement, having the excellent bending resistance, and being wide in use range and low in bending requirement during construction.

Description

[0001] The present invention is a divisional application for an invention patent named: A Bending-Resistant Optical Fiber, with the filing date: July 09, 2014, and the application number: 201410323728.8. technical field [0002] The invention belongs to the field of optical fiber technology, in particular to a bending-resistant optical fiber. Background technique [0003] With the rapid development of fiber-to-the-home and fiber-to-the-desktop technologies, the construction of optical networks is accelerating. At present, the most widely used in the optical fiber access network is the low water peak optical fiber, and its bending radius is generally recommended to be about 30mm. However, in actual use, the bending radius of the optical fiber by users or construction personnel is often smaller than the recommended value, so the optical fiber often breaks, that is to say, the bending resistance of the optical fiber is not ideal. Contents of the invention [0004] In order t...

Claims

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Application Information

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IPC IPC(8): G02B6/02
CPCG02B6/02G02B6/02395
Inventor 沈群华
Owner 江苏华脉光电科技有限公司
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