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Ferrule structure, ferrule structure with fiber, and method for manufacturing ferrule structure with fiber

A structure and ferrule technology, applied in the coupling of optical waveguide, optics, light guide, etc., can solve the problems of grinding process and other problems, and achieve the effect of omitting the grinding process and simplifying the manufacturing process

Inactive Publication Date: 2019-06-21
THE FUJIKURA CABLE WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the ferrule manufacturing method described in Patent Document 2, the front surface of the ferrule main body and the end surface of the optical fiber need to be polished, so a polishing step is required.

Method used

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  • Ferrule structure, ferrule structure with fiber, and method for manufacturing ferrule structure with fiber
  • Ferrule structure, ferrule structure with fiber, and method for manufacturing ferrule structure with fiber
  • Ferrule structure, ferrule structure with fiber, and method for manufacturing ferrule structure with fiber

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Experimental program
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Effect test

no. 1 approach ＝

[0028] ===First Embodiment===

[0029]

[0030] figure 1 It is an overall perspective view of the ferrule structure 1 of the first embodiment. Figure 2A and Figure 2B It is an exploded perspective view of the ferrule structure 1 of the first embodiment.

[0031] In the following description, each direction is defined as shown in the figure. That is, assuming that the direction of the fiber hole 12 is referred to as the "front-back direction", the optical fiber 3 inserted into the fiber hole 12 (refer to Figure 4B and Figure 4C ) side of the end face (or the side of the lens plate 20 when viewed from the ferrule main body 10) is referred to as "front", and the opposite side is referred to as "rear". In addition, the direction in which the two guide holes 21 are arranged is referred to as "left-right direction", the right side when viewed from the rear side to the front side is referred to as "right", and the opposite side is referred to as "left". In addition, let t...

no. 2 approach ＝

[0070] === Second Embodiment ===

[0071] In the first embodiment described above, by forming the concave portion 23 in the lens plate 20 , the matching agent filling portion 1A is formed between the opening surface of the fiber hole 12 of the ferrule body 10 and the contact surface 231 of the lens plate 20 . Clearance. However, by forming the recess 15 in the ferrule body 10 , a gap as the mating agent filling portion 1A may be formed between the opening surface of the fiber hole 12 of the ferrule body 10 and the contact surface of the lens plate 20 .

[0072] Figure 7A It is an overall perspective view of the ferrule structure 1 of the second embodiment. Figure 7B It is an exploded perspective view of the ferrule structure 1 of the second embodiment.

[0073] Similar to the first embodiment, the ferrule body 10 has a guide hole 11 , an optical fiber hole 12 , an optical fiber insertion port 13 , and an adhesive filling portion 14 , and also has a concave portion 15 .

...

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PUM

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Abstract

To form a ferrule body and a lens array as separate bodies, make it possible to omit a polishing step, and simplify the manufacturing procedure. This ferrule structure is provided with: a ferrule bodyhaving a guide hole for inserting a guide pin, a fiber hole for inserting an optical fiber, and an opening surface on which the fiber hole opens; and a lens plate having a guide hole for inserting the guide pin, a lens unit, and an abutment surface for abutting the end surface of the optical fiber. A recess is formed on the ferrule body and / or the lens plate. The recess forms a gap, which servesas a matching agent filling part to be filled with a refractive index matching agent, between the opening surface of the ferrule body and the abutment surface of the lens plate.

Description

technical field [0001] The present invention relates to a ferrule structure, a ferrule structure with an optical fiber, and a method for manufacturing the ferrule structure with an optical fiber. Background technique [0002] As a ferrule for holding an end portion of an optical fiber, a ferrule having an adhesive filling portion provided with an opening for filling an adhesive is known, and the adhesive filling portion is filled with an adhesive to fix the optical fiber. Patent Document 1 discloses that the end surface of an optical fiber is brought into contact with the inner wall of an adhesive filling portion (recess) of a ferrule, and an adhesive is filled from an opening of the adhesive filling portion, and the optical fiber is fixed by curing the adhesive. [0003] In addition, it is known that a ferrule body holding an end portion of an optical fiber and a lens array are configured as separate bodies. Patent Document 2 discloses that a lens array is attached to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/32G02B6/38
CPCG02B6/327G02B6/382G02B6/3853G02B6/3885G02B6/3847
Inventor 中间章浩高桥茂雄朝田大贵
Owner THE FUJIKURA CABLE WORKS LTD
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