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Capillary for optical fibre, hoop for optical connector and capillary with optical fibre

一种毛细管、光纤的技术，应用在光学、光学元件、光波导的耦合等方向，能够解决不能调心作业、成本高、价格高等问题

Inactive Publication Date: 2003-05-28
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To meet such requirements, the Figure 13 The shown tolerance of the inner diameter 11a of the ferrule 11 for the optical connector, or the tolerance of the concentricity is set to be smaller than the standard tolerance, and there is no proposal other than that, because the ferrule for the optical connector manufactured from a plurality of In the ferrule 11, a method such as a ferrule with good dimensional accuracy is selected for manufacture, so the cost is very high
In addition, the same processing of capillary with optical fiber Figure 12 In the stubby optical fiber chuck 6 shown, the structure of the PC connection part is the same as that of the ferrule used for optical connectors. Similarly, when low connection loss is required, the alignment operation cannot be performed, and the dimensional accuracy is strict. , so has the problem of very high price

Method used

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  • Capillary for optical fibre, hoop for optical connector and capillary with optical fibre
  • Capillary for optical fibre, hoop for optical connector and capillary with optical fibre
  • Capillary for optical fibre, hoop for optical connector and capillary with optical fibre

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Embodiment Construction

[0052] The present inventors used, as an example of the capillary for optical fiber of the present invention, for example, a capillary for optical fiber made of crystallized glass having the composition given in Table 1.

[0053] Table 1

[0054] As shown in FIG. 1(A), a capillary 20 for an optical fiber made of crystallized glass is produced, wherein the Ra value of the surface roughness of the inner hole 20a is, for example, about 0.3 μm, Ry is about 2.0 μm, and the average The difference between the line and the apex line is about 1.0 μm, and the inner diameter of the inner hole 20 a is about 1.0 μm (0.95 to 1.05 μm) larger than that of the optical fiber.

[0055] Using the capillary 20 for an optical fiber, a ferrule 21 for an optical connector as shown in FIG. 1(B) is produced. That is, the manufactured ferrule 21 can be connected to other optical connector plugs according to the specified connection loss, for example, its outer diam...

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Abstract

The present invention provides a capillary for optical fiber, a ferrule for optical connector, and an optical-fiber-fixed capillary. The capillary for optical fiber has an inner hole allowing an optical fiber to be inserted and retained therein Ra value of the surface roughness of the inner hole is 0.1 mum to 0.5 mum. The ferrule for optical connector is provided with a chamfered part on one end of the capillary for optical fiber for guiding it into a sleeve and a flared part on the other end of the capillary for optical fiber for guiding the optical fiber into the inner hole.

Description

technical field [0001] The present invention relates to a capillary for an optical fiber used in the manufacture of an optical device, a ferrule for an optical connector, and a capillary with an optical fiber for inserting an optical fiber into an inner hole. Background technique [0002] In recent years, with the rapid development of optical communication networks, a large number of high-performance and low-cost optical devices have been required. In particular, a plug-type optical device and a receptacle-type optical device in which an optical fiber is provided inside use a cylindrical capillary with an optical fiber called an optical fiber stub, and an optical connector plug. An optical fiber is inserted into the capillary, and is fixed by an adhesive. [0003] For example, if Figure 12 As shown, one end of the capillary with optical fiber is machined according to a convex spherical surface, and the other end is machined according to an inclined polished surface, so tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/36G02B6/38G02B6/40G02B6/42
CPCG02B6/3822C03C10/00G02B6/3861G02B6/3837G02B6/3863G02B6/421
Inventor 和田正纪竹内宏和齐藤和也
Owner NIPPON ELECTRIC GLASS CO LTD
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