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Symmetrical MZ structure double-core optical fiber and manufacturing method thereof

A technology of dual-core optical fiber and production method, which is applied in the directions of multi-core optical fiber, cladding optical fiber, optical waveguide light guide, etc., can solve the problem that the refractive index of the core is not exactly the same, and achieve the effect of high reliability and stable performance.

Active Publication Date: 2020-06-12
北京空间科技信息研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a symmetrical MZ structure dual-core optical fiber and its manufacturing method, aiming to solve the problem that the refractive index of the two cores of the existing dual-core optical fiber is not exactly the same due to the manufacturing process and other problems

Method used

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  • Symmetrical MZ structure double-core optical fiber and manufacturing method thereof
  • Symmetrical MZ structure double-core optical fiber and manufacturing method thereof
  • Symmetrical MZ structure double-core optical fiber and manufacturing method thereof

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Embodiment 1

[0032] refer to figure 1 and figure 2 , shows an exemplary symmetrical MZ-structured dual-core fiber. When making a dual-core optical fiber with a symmetrical MZ structure, the dual-core optical fiber 5 comprising the first core 6 and the second core 7 is cut from the middle half to obtain the first half of the first core 6 1 and The second half section 2 and the first half section 3 and the second half section 4 of the second fiber core 7 . Reverse welding at the breakpoint, that is, the first half of the first core 6 1 is connected to the second half 4 of the second core 7, the first half 3 of the second core 7 is connected to the second half 2 of the first core 6, and finally will be reconnected Both ends of the fused double-core optical fiber are connected with single-mode optical fibers 8 and 9 .

[0033] The dual-core optical fiber described in this embodiment preferably has a core radius of 4.1 μm and a distance between cores of 33 μm.

Embodiment 2

[0035] refer to image 3 , shows an exemplary symmetrical MZ-structured dual-core fiber. When making a symmetrical MZ structure double-core fiber, the double-core fiber 5 comprising the first core 6 and the second core 7 is cut from the middle half 11, reversely fused at the break point, and then A quarter of 10 cuts and reverse fusion, and finally cut and reverse fusion at three quarters of 12, the obtained dual-core optical fiber is symmetrical in structure. Finally, the two ends of the re-spliced ​​double-core optical fiber are connected to single-mode optical fibers 8 and 9 .

[0036] The dual-core optical fiber described in this embodiment preferably has a core radius of 4.1 μm and a distance between cores of 33 μm.

Embodiment 3

[0038] refer to Figure 4, shows an exemplary symmetrical MZ-structured dual-core fiber. When making a symmetrical MZ structure double-core fiber, the double-core fiber 5 comprising the first core 6 and the second core 7 is cut from the middle half 16, reversely fused at the break point, and then respectively Cut and reverse fusion splicing at 1 / 8 13, 1 / 4 14, 3 / 8 15, 5 / 8 17, 3 / 4 18, 7 / 8 19, and the obtained double-core fiber is in the structure above is symmetrical. Finally, the two ends of the re-spliced ​​double-core optical fiber are connected to single-mode optical fibers 8 and 9 .

[0039] The dual-core optical fiber described in this embodiment preferably has a core radius of 4.1 μm and a distance between cores of 33 μm.

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Abstract

The embodiment of the invention provides a symmetrical MZ structure double-core optical fiber and a manufacturing method thereof, the manufacturing method comprises the following steps: cutting a to-be-processed double-core optical fiber into n parts of double-core optical fiber cutting sections M1, M2,... Mn, wherein n is an integer greater than 1; reversely welding the double-core optical fibercutting sections M1, M2,... Mn at each breakpoint of the double-core optical fiber cutting sections M1, M2,... Mn to form a processed double-core optical fiber; and respectively connecting two ends ofthe processed dual-core optical fiber with a single-mode optical fiber S1 and a single-mode optical fiber S2. The symmetrical MZ structure double-core optical fiber has the characteristics of electromagnetic interference resistance, stable performance, large transmission capacity and the like, and also has symmetry, complete coherence and higher reliability.

Description

technical field [0001] The invention relates to the fields of optical fiber filtering, optical fiber sensing, and all-optical information processing, and specifically relates to a symmetrical MZ-structured double-core optical fiber and a manufacturing method thereof. Background technique [0002] At present, with the rapid development of the information age, the development of optical fiber communication and optical fiber sensing technology is becoming more and more mature. Compared with traditional electrical sensors, fiber optic sensors have the advantages of anti-electromagnetic interference, high reliability, corrosion resistance, stable performance, low transmission loss, large transmission capacity, light weight, and a wide range of measurement parameters, and are widely used in the sensing field. Among them, the Mach-Zender interferometry technique is one of the important research directions and has great application value. [0003] The dual-core fiber Mach-Zehnder i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02B6/25
CPCG02B6/02042G02B6/25
Inventor 秦凡王晶
Owner 北京空间科技信息研究所
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