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A radiation-resistant polarization-maintaining optical fiber and its preparation method and application

A polarization-maintaining optical fiber and radiation-resistant technology, which is applied in the direction of polarized optical fiber, clad optical fiber, glass manufacturing equipment, etc., can solve the problems of not being resistant to radiation, achieve good full-temperature characteristics, ensure batch consistency, and yield high effect

Active Publication Date: 2022-03-11
FENGHUO COMM SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The embodiment of the present application provides a radiation-resistant polarization-maintaining optical fiber and its preparation method and application, so as to solve the problem that the germanium-doped optical fiber is not resistant to radiation in the prior art

Method used

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  • A radiation-resistant polarization-maintaining optical fiber and its preparation method and application
  • A radiation-resistant polarization-maintaining optical fiber and its preparation method and application
  • A radiation-resistant polarization-maintaining optical fiber and its preparation method and application

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Embodiment 1

[0053] Such as Figure 1 to Figure 6 As shown, in this embodiment, the PCVD process is first used to prepare a core rod of pure silica liner, first cladding inner layer, and pure silica core from the outside to the inside, and the doping composition is B 2 o 3 Stress rods, and the fluorine-doped tubes of the first cladding outer layer and the pure quartz liner from the inside to the outside, wherein the first cladding inner layer and the first cladding outer layer are completely consistent in composition, in order to make the second The inner layer of the first cladding is in contact with the outer layer of the first cladding, the pure quartz liner outside the core rod is removed by grinding, and the pure quartz liner outside the fluorine-doped tube is retained. Then insert the core rod into the fluorine-doped tube and melt at 2000°C to form a fluorine-doped solid rod. The diameter of the fluorine-doped solid rod is 25 mm. The inner layer of the first cladding and the outer l...

Embodiment 2

[0058] Such as Figure 1 to Figure 6 As shown, in this embodiment, the PCVD process is first used to prepare a core rod of pure silica liner, first cladding inner layer, and pure silica core from the outside to the inside, and the doping composition is B 2 o 3 Stress rods, and the fluorine-doped tubes of the first cladding outer layer and the pure quartz liner from the inside to the outside, wherein the first cladding inner layer and the first cladding outer layer are completely consistent in composition, in order to make the second The inner layer of the first cladding is in contact with the outer layer of the first cladding, the pure quartz liner outside the core rod is removed by grinding, and the pure quartz liner outside the fluorine-doped tube is retained. Then insert the mandrel into the fluorine-doped tube and melt at 2300°C to form a fluorine-doped solid rod. The diameter of the fluorine-doped solid rod is 30 mm. The inner layer of the first cladding and the outer la...

Embodiment 3

[0063] Such as Figure 1 to Figure 6 As shown, in this embodiment, the PCVD process is first used to prepare a core rod of pure silica liner, first cladding inner layer, and pure silica core from the outside to the inside, and the doping composition is B 2 o 3 Stress rods, and the fluorine-doped tubes of the first cladding outer layer and the pure quartz liner from the inside to the outside, wherein the first cladding inner layer and the first cladding outer layer are completely consistent in composition, in order to make the second The inner layer of the first cladding is in contact with the outer layer of the first cladding, the pure quartz liner outside the core rod is removed by grinding, and the pure quartz liner outside the fluorine-doped tube is retained. Then insert the mandrel into the fluorine-doped tube and melt at 2100°C to form a fluorine-doped solid rod. The diameter of the fluorine-doped solid rod is 35 mm. The inner layer of the first cladding and the outer la...

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Abstract

The application relates to a radiation-resistant polarization-maintaining optical fiber and a preparation method thereof, and relates to the field of optical fiber preparation. The radiation-resistant polarization-maintaining fiber includes a pure silica fiber core, a pair of stress parts and a cladding. The stress part is formed of boron-doped silica glass and is arranged on both sides of the pure silica fiber core. The cladding surrounds the pure silica fiber core and the stress part. , the cladding layer is composed of a first cladding layer and a second cladding layer, the second cladding layer is arranged on the outer periphery of the first cladding layer, wherein the first cladding layer is formed of fluorine-doped quartz glass, and the second cladding layer is formed of pure quartz glass . The radiation-resistant polarization-maintaining fiber prepared by this application has excellent radiation-resistant performance. The working wavelength of the polarization-maintaining fiber is 1310nm and 1550nm double windows, and its induced loss is below 2dB / km under the total irradiation dose of 200krad. The radiation-resistant polarization-maintaining fiber of the present application can realize low-loss information transmission of the polarization-maintaining fiber under harsh radiation conditions, and maintain good full-temperature crosstalk.

Description

technical field [0001] The present application relates to the technical field of optical fiber preparation, in particular to a radiation-resistant polarization-maintaining optical fiber and its preparation method and application. Background technique [0002] Polarization Maintaining Optical Fiber (PMF) is abbreviated as Polarization Maintaining Optical Fiber (PMF). Since birefringence is introduced into the fiber, the linearly polarized light can maintain its polarization state for transmission in the fiber, so it is widely used in polarization-related applications. [0003] At present, the most widely used polarization-maintaining fiber in the field of polarization is the panda-type polarization-maintaining fiber. The characteristic of this fiber is that a circular stress zone with a high thermal expansion coefficient is symmetrically introduced into the cladding of the fiber to squeeze the core to generate stress birefringence. . [0004] This conventional panda-type pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/024G02B6/036C03B37/027C03B37/018C03B37/012
CPCG02B6/024G02B6/03633C03B37/02709C03B37/01211C03B37/018C03B37/01853
Inventor 柯一礼罗文勇杜城张涛赵磊祝威
Owner FENGHUO COMM SCI & TECH CO LTD
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