Optical fiber connection structure

Abstract

To prevent a dust collection effect from occurring at the tip of an optical fiber brought into contact with each other, and moreover, to make it possible to easily splice the two pieces of optical fibers to each other without the need for a large-scale fusing machine. In an optical fiber splicing structure for splicing two pieces of optical fibers 11, 12 into the state in which each core tip is in contact with the other without being fused, the tip parts of the optical fibers 11, 12 including the core tips are enclosed in a hermetically sealed space such as the internal space of a connector 24 incorporating, for example, ferrules 13, 14, and this hermetically sealed space is filled with an inert gas or a liquid which is transparent to the light propagating in the optical fibers 11, 12 and is not decomposed by the light.

Description

technical field [0001] The present invention relates to a structure for connecting two optical fibers. Background technique [0002] As a structure for connecting two optical fibers, roughly two types of structures are conventionally known. One is a structure in which the ends of two optical fibers are fused in a state where the cores are coaxially aligned. The other is a structure in which two optical fibers are connected without fusion splicing, but in a state where the ends of the cores are in contact with each other. The more specific structure of the latter is as described in Patent Document 1. A well-known connector consists of two ferrules that respectively fix the front ends of two optical fibers, and when the core front ends of each optical fiber are matched, A common ferrule through which these ferrules are inserted, and a member (mechanism) that holds these ferrules in a state where the core tips of two optical fibers are in contact with each other are constitut...

AI Technical Summary

Problems solved by technology

In the case of single-mode fiber, it is difficult to cause a dust collection effect because the entire core contacts the fiber for connection by pressing

However, in the case of an optical fiber with a large core diameter such as a multimode optical fiber, it is difficult to make the core end faces come into contact with each other over the entire surface. Therefore, the state where a part of the core end faces are exposed to the outside air is likely to cause a dust collection effect.

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