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Novel plastic cladding optical fiber

A technology of plastic cladding and optical fiber, which is applied in the direction of cladding optical fiber, multi-layer core/clad optical fiber, optical waveguide and light guide, etc. It can solve the problems that the plastic cladding is easily damaged and the loss of optical fiber or connector increases.

Inactive Publication Date: 2009-02-11
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Studies have shown that the performance of plastic clad optical fiber is not only closely related to the performance of the quartz core, but also mainly depends on the comprehensive performance of the plastic cladding, especially the shear modulus. Once the plastic cladding is too low, the plastic cladding is easily damaged, resulting in fiber Or the increase in the loss of the connector will seriously affect the use

Method used

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  • Novel plastic cladding optical fiber
  • Novel plastic cladding optical fiber
  • Novel plastic cladding optical fiber

Examples

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Effect test

Embodiment 1

[0034] Embodiment 1: (the core layer is designed with pure quartz, the NA value is 0.37, the core layer diameter is 200 μm optical fiber, and the modulus of the plastic cladding is 230Mpa,)

[0035] In this example, using figure 1 The refractive index profile of the large-core-diameter hard plastic-clad optical fiber shown in the refractive index distribution is used to set the optical fiber process. The core layer of the optical fiber is designed with pure silica material, and the refractive index is 1.457, which reduces the content of defects in the optical fiber. , the diameter of the core layer is designed to be 200 μm; the refractive index of the plastic cladding used after curing is 1.41, and the material with a shear modulus of 230Mpa is selected. The NA value of the obtained optical fiber was 0.37.

[0036] By controlling the drawing parameters during the drawing process, the effect of reducing the stress on the fiber interface is achieved, and the absorption loss of ...

Embodiment 2

[0039] Embodiment 2: (the core layer adopts a gradient design, the NA value is 0.40, the core layer diameter is 200 μm optical fiber, and the modulus of the plastic cladding is 248Mpa,)

[0040] In this embodiment, the refractive index profile of the large-core-diameter hard plastic-clad optical fiber shown in Figure 3 is used to set the optical fiber process. The core layer of the optical fiber is designed with a gradient doped silica material. The diameter of the layer is designed to be 200 μm; the cured refractive index of the plastic cladding used is 1.41, and the shear modulus is selected to be 248 Mpa. The NA value of the obtained optical fiber was 0.40. After wire drawing, the optical fiber is tightly sheathed and wrapped with ETFE material, and the outer diameter of the tightly wrapped fiber reaches 500 μm. The 850nm transmission bandwidth was tested on the optical fiber prepared in this embodiment, and the test result is: the transmission bandwidth of the 200 / 230 / 500...

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Abstract

The invention relates to a novel plastic cladding optical fiber in the fields of optical fiber communication, industrial control and optical fiber sensing. The novel plastic cladding optical fiber comprising a quartz core layer and a plastic ultraviolet cured clad is characterized in that the shear modulus of the plastic clad is not smaller than 150 Mpa; the thickness of the plastic clad is 10 Mum-20 Mum; the relative difference value Delta of the refractive index between the plastic clad and a pure quartz material is 2.5 percent-7.5 percent; the value of the numerical aperture NA of the optical fiber is 0.35-0.5; and the optical fiber can be used in a 850 nm window. The optical fiber has the advantages that the large numerical aperture and the low transmission loss enable the optical fiber to be applied in the short-distance and medium-distance data communications, the industrial control and the medical photoelectric products.

Description

technical field [0001] The invention relates to an optical fiber in the fields of optical fiber communication, industrial control and optical fiber sensing, in particular to a novel plastic clad optical fiber. The optical fiber can be used in the 850nm window. The large numerical aperture and low transmission loss of the optical fiber enable this optical fiber to be used in short and medium distance data communication, industrial control and medical optoelectronic products. Background technique [0002] With the wide application of optical communication technology in access network and optical interconnection, the application and development of optical transmission technology in new fields will also be accelerated, such as: access network and user infrastructure network, factory automatic control, traffic control and display, and medical treatment image transfer, etc. In order to be able to adapt to the rapid growth of demand for high-speed optical LAN, optical free space t...

Claims

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Application Information

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IPC IPC(8): G02B6/02G02B6/036
Inventor 涂峰杨晨韩庆荣
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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