A single-mode step-type polymer optical fiber and its preparation method

A polymer, step-type technology, used in cladding fibers, optical components, optical waveguides and light guides, etc., can solve problems such as increased propagation loss, unsatisfactory dispersion effect, etc., to achieve superior drawing performance, ensure interface bonding quality, Avoid the effect of increased loss

Active Publication Date: 2021-05-18
宏安集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, POF includes step optical fiber (SI-POF) whose refractive index does not change in the fiber radial direction. SI-POF increases the refractive index of the core layer relative to the cladding layer by adding dopants in the core layer polymer. However, due to The melting temperature of most dopants is lower than the glass transition temperature of the core polymer. During the melt mixing process, the dispersion effect of the dopant in the core polymer is inevitably unsatisfactory. Therefore, in SI- During the manufacturing process of POF preform, it is difficult to ensure that the core layer meets the requirements of uniform distribution of light refractive index, and in the process of use, the dopant introduced into the SI-POF core layer significantly increases the propagation loss of light

Method used

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  • A single-mode step-type polymer optical fiber and its preparation method
  • A single-mode step-type polymer optical fiber and its preparation method
  • A single-mode step-type polymer optical fiber and its preparation method

Examples

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Embodiment 1

[0031] The invention provides a method for preparing a single-mode step-type polymer optical fiber, which comprises the following steps:

[0032] (1) Melt and extrude Zeonex E48R granules into a round rod through a precision extruder, and cool to room temperature 25°C. The diameter of the made round rod is 4.9mm; the melting temperature is controlled at 140-180°C.

[0033] (2) Melt and extrude Zeonex 480R granules into a cylinder through a precision extruder, and cool it to room temperature 25°C. The outer diameter of the produced cylinder is 125.5mm, and the inner diameter is 4.7mm; the melting temperature is controlled at 140-180 ℃.

[0034] (3) Grinding and polishing the outer surface of the round rod made in step (1) and the inner and outer surfaces of the cylinder made in step (2) respectively, so that the inner surface of the cylinder and the outer surface of the round rod have a size between Interference fit H7 / s6.

[0035] (4) drawing one end of the round rod obtaine...

Embodiment 2

[0041] The invention provides a method for preparing a single-mode step-type polymer optical fiber, which comprises the following steps:

[0042] (1) Melt and extrude Zeonex E48R granules into a round rod through a precision extruder, and cool to room temperature 25°C. The diameter of the made round rod is 4.5mm; the melting temperature is controlled at 140-180°C.

[0043] (2) Melt and extrude Zeonex 480R granules into a cylinder through a precision extruder, and cool to room temperature 25°C. The outer diameter of the produced cylinder is 125.6mm, and the inner diameter is 4.3mm; the melting temperature is controlled at 140-180 ℃.

[0044] The contents of steps (3) to (7) are the same as the contents of steps (3) to (7) in Embodiment 1, and will not be repeated here.

[0045] (8) The optical fiber preform obtained in step (7) is finally drawn by an optical fiber drawing machine, and finally drawn into a single-mode optical fiber. The outer diameter of the single-mode optical...

Embodiment 3

[0047] The invention provides a method for preparing a single-mode step-type polymer optical fiber, which comprises the following steps:

[0048] (1) Melt and extrude Zeonex E48R granules into a round rod through a precision extruder, and cool to room temperature 25°C. The diameter of the made round rod is 4.6mm; the melting temperature is controlled at 140-180°C.

[0049] (2) Melt and extrude Zeonex 480R particles into a cylinder through a precision extruder, and cool to room temperature 25°C. The outer diameter of the produced cylinder is 125.8mm, and the inner diameter is 4.4mm; the melting temperature is controlled at 140-180 ℃.

[0050] The contents of steps (3) to (7) are the same as the contents of steps (3) to (7) in Embodiment 1, and will not be repeated here.

[0051] (8) The optical fiber preform obtained in step (7) is finally drawn by an optical fiber drawing machine, and finally drawn into a single-mode optical fiber. The outer diameter of the single-mode optica...

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Abstract

The invention relates to a single-mode step-type polymer optical fiber and a preparation method thereof, which solves the requirement that it is difficult to ensure that the core layer reaches a uniform distribution of light refractive index in the manufacturing process of the existing SI-POF preform, and the SI-POF core layer The dopant introduced in the technical problem of significantly increasing the light propagation loss, which consists of a core layer and a cladding layer, the cladding layer is wrapped around the core layer and connected to the core layer, the core layer The material is Zeonex E48R, the diameter of the core layer is 4.4-4.8 μm; the cladding material is Zeonex 480R, and the outer diameter of the cladding is 124-126 μm; the core layer and the cladding are concentric shaft structures; At the same time, the invention discloses a preparation method of a single-mode step-type polymer optical fiber; it can be widely used in the technical field of polymer optical fiber preparation.

Description

technical field [0001] The invention relates to the technical field of polymer optical fiber preparation, in particular to a single-mode step-type polymer optical fiber and a preparation method thereof. Background technique [0002] As we all know, Polymer Optical Fibers (POF) is an optical fiber composed of a core layer made of a polymer material with a high refractive index and a cladding layer with a low refractive index. The POF itself does not emit light, and must be given a certain amount of light irradiation. The light enters from one end of the POF, undergoes multiple total reflections along the core layer, and emits the brightness, brightness, and signal changes from the other end. Compared with glass optical fibers, POF has the advantages of good biocompatibility, lower processing temperature, larger elastic strain limit and lower Young's modulus, etc., and has wider applications in grating sensing applications prospect. [0003] At present, POF includes step opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02B29C69/00B29L11/00
CPCB29C69/00B29L2011/0075G02B6/02
Inventor 陈卫东王传杰张鹏张明立
Owner 宏安集团有限公司
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