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Bending insensitive optical fiber and preparing method thereof

An optical fiber preform, optical fiber technology, applied in glass manufacturing equipment, glass fiber products, optics, etc., can solve problems such as increasing equipment, increasing costs, and reducing fiber water peaks

Active Publication Date: 2005-06-29
FENGHUO COMM SCI & TECH CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

[0010] Plasma Chemical Vapor Deposition PCVD process is an in-tube process. Its advantage is that it can design and realize a very complex preform refractive index profile. However, it is difficult for PCVD process to achieve low attenuation of optical fiber, especially to reduce the water peak of optical fiber.
An effective way is to increase the purity of raw materials, but this method will greatly increase the cost and require additional equipment

Method used

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  • Bending insensitive optical fiber and preparing method thereof
  • Bending insensitive optical fiber and preparing method thereof
  • Bending insensitive optical fiber and preparing method thereof

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Embodiment Construction

[0044] According to the ratio of raw materials and process parameters shown in Table 1, under the control of computer program, adopt PCVD process to manufacture the optical fiber of the present invention, its waveguide structure of the prepared optical fiber is as follows figure 1 shown. Install the prepared reaction substrate tube on the deposition equipment, raise the temperature of the preheating furnace to 1150°C, and compile the computer program; turn on the microwave generator, and start to deposit according to the program customized by the formula. After polishing, transition, and Deposition of the quad cladding, third cladding, second cladding, first cladding and core layer followed by stopping the microwave and computer program. Lift the deposited optical fiber preform to the rod-forming equipment for melting and shrinking. During the rod-forming process, oxygen and Freon are introduced to corrode, and then burnt from the gas outlet. During the burn-in process, the in...

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Abstract

This invention relates to a bending-insensitive single module optics fiber and its process method. Its wave-guide structure comprises core layer and cover layer. Its process adopts PCVD work that the materials are burned solid without the oxygen and Freon with different proportions to get the fiber. The fiber bending consumption lies between 1310nm wavelength and 1550nm wavelength relative to regular 0.652 fibers and its fiber module field diameter is 7í‚0.8ª–m and its zero color diffusion wavelength is near 1310nm.

Description

technical field [0001] The invention relates to the design of optical fiber waveguide structure and optical fiber manufacturing, in particular to a single-mode optical fiber insensitive to bending and its preparation method. technical background [0002] In recent years, the rise of integrated miniaturized optical devices and optical fiber manufacturing technology requires that the additional loss of optical fiber is relatively small under small bending radius. Therefore, bending-resistant optical fibers with large mode field diameter, small bending loss, low attenuation and high strength can well meet this demand. [0003] Optical fiber preform waveguide structure design is the core technology of optical fiber manufacturing and the key to determining the performance of optical fiber. Therefore, optical fiber manufacturers attach great importance to the design of optical fiber waveguide structure. Conventional G.652 optical fiber meets the requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012
CPCC03B37/01807C03B37/0183C03B2201/31C03B2203/23C03B2207/86
Inventor 李诗愈成煜陆大方
Owner FENGHUO COMM SCI & TECH CO LTD
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