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1*N arc chute type optical fiber coupler

An optical fiber coupler and optical fiber technology, applied in the field of 1×N arc-groove fiber coupler, can solve the problems of difficult control of the splitting ratio, low coupling efficiency, complicated process, etc., and achieve easy control of the splitting ratio, high coupling efficiency, good stability

Inactive Publication Date: 2012-09-12
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the traditional mixing rod method makes N×N (1×N) optical fiber couplers, and the requirements for the types of optical fibers used are too strict, and the traditional fusion tapered method makes N×N (1×N) The process of fiber coupler is complex, coupling through the cladding, the coupling efficiency is not high, the splitting ratio is not easy to control, and it will cause additional loss and other problems

Method used

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  • 1*N arc chute type optical fiber coupler

Examples

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Embodiment approach 1

[0021] A 1×5 arc groove fiber optic coupler, see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , including the main fiber 1 and N branch fibers 2, N=2; the main fiber 1 is a common single-mode fiber, the core 11 has a diameter of 65 um, and the cladding 12 has a thickness of 30 um; the N branch fibers 2 are common single-mode fibers , the diameter of the core 21 is 65 um, the thickness of the cladding 22 is 30 um; the first groove surface 13, the second groove surface 14, the third groove surface 15 of each groove of the main fiber 1 and N branch fibers 2 for each branch fiber The first groove surface 23, the second groove surface 24, the third groove surface 25, and the fourth groove surface 26 are flat; the height of the first groove surface 13 and the third groove surface 15 of each groove of the main optical fiber 1 is 42.5 um; The second groove surface 14 of each groove of the main fiber 1 has a long side of...

Embodiment approach 2

[0023] A 1×5 arc groove fiber optic coupler, see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , including main optical fiber 1 and N branch optical fibers 2, N=2; main optical fiber 1 is plastic optical fiber, core 11 has a diameter of 65 um, and cladding 12 has a thickness of 30 um; N branch optical fibers 2 are plastic optical fibers with a core of 21 The diameter is 65 um, the thickness of the cladding 22 is 30 um; the first groove surface 13, the second groove surface 14, the third groove surface 15 of each groove of the main fiber 1 and the first groove of each branch fiber of N branch fibers 2 The surface 23, the second groove surface 24, the third groove surface 25, and the fourth groove surface 26 are flat; the heights of the first groove surface 13 and the third groove surface 15 of each groove of the main optical fiber 1 are 42.5 um; each of the main optical fiber 1 The second groove surface 14 of each...

Embodiment approach 3

[0025] A 1×5 arc groove fiber optic coupler, see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , including the main fiber 1 and N branch fibers 2, N=2; the main fiber 1 is an ordinary single-mode fiber, the core 11 has a diameter of 65 um, and the cladding 12 has a thickness of 30 um; the N branch fibers 2 are plastic optical fibers, and the fiber The diameter of the core 21 is 65 um, and the thickness of the cladding 22 is 30 um; the first groove surface 13, the second groove surface 14, the third groove surface 15 of each groove of the main optical fiber 1 and the first groove surface of each branch fiber of N branch fibers 2 The first groove surface 23, the second groove surface 24, the third groove surface 25, and the fourth groove surface 26 are flat; the height of the first groove surface 13 and the third groove surface 15 of each groove of the main optical fiber 1 is 42.5 um; the main optical fiber 1 The s...

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Abstract

The invention discloses a 1*N arc chute type optical fiber coupler, relates to a coupler, and solves the problems that the N*N*(1*N) optical fiber coupler manufactured by the conventional mixed rod method has a strict requirement on the type of optical fibers to be used, the N*N*(1*N) optical fiber coupler manufactured by the conventional fused tapering method is complicated in process and low in cladding coupling efficiency, beam splitting ratio is difficult to control, extra loss is formed and the like. The coupler comprises a main optical fiber (1) and N branch optical fibers (2), wherein N is a natural number which is more than 1; the main optical fiber (1) is connected with the N branch optical fibers (2) through corresponding chutes; and the types of the optical fibers to be used are not limited, so that the application range is relatively wide. The coupler couples fiber cores, so that the coupling efficiency is relatively high; fused tapering is not used, so that beam splitting ratio is easy to control, the loss is relatively low, and the stability is relatively high; and the 1*N arc chute type optical fiber coupler is suitable for the fields of optical fiber communication, optical fiber sensing, microwave photons and the like.

Description

Technical field: [0001] The invention relates to a 1×N arc groove type optical fiber coupler, which is especially suitable for the fields of optical fiber communication, optical fiber sensing, microwave photons and the like. technical background: [0002] With the rapid development of optical fiber communication technology, optical fiber subscriber network, optical fiber CATV, passive optical network, optical fiber sensing technology and other fields, the application of optical fiber coupler is becoming more and more extensive. Relevant experts believe that optical coupler and wavelength division multiplexing Device (WDM) will become a new growth point of passive devices. [0003] Recently, due to the continuous improvement of processing precision (which has reached the order of um), it has become possible to fine-process optical fibers, and it has been widely used in the research and development of optical fiber devices. [0004] At present, N×N (1×N) plastic optical fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26
Inventor 宁吉粤裴丽张婵
Owner BEIJING JIAOTONG UNIV