Optical fiber connector

Abstract

The optical fiber connector includes a connector housing (21), having a splice assembly (13) therein, and an end cap (5) attached to one end of the connector housing (21), from which leads out a primary coating portion (3). A boundary (4c) between a portion of the primary coating portion (3), obtained by removing an outer coating (4b) of the inner cover (4) while leaving an inner coating (4a), and a portion obtained by leaving the outer coating (4b) of the inner cover (4), is located in the interior of the connector housing (21). The end cap (5) is provided in the interior thereof with a tubular portion and an extension extending from an end of the tubular portion, the tubular portion including an insert hole for an insertion of the primary coating portion (3) approximately coaxially with a guiding hole formed in the splice assembly accommodated in the connector housing (21) for guiding the primary coating portion (3) leading out from the splice assembly. The extension includes a strain-control hole, communicating with the insert hole, for receiving said boundary (4c) of the primary coating portion (3), and for controlling stress at the boundary (4c).

Description

technical field [0001] The present invention relates to an optical fiber connector having a splice assembly therein for optically joining together end faces of bare fiber optic portions, each end face of which has had a fiber optic cable cover removed, while the end faces abut each other. Background technique [0002] Generally, as disclosed in Japanese Patent No. 3445479, an optical fiber connector has a splice assembly for optically connecting the end faces of bare optical fiber portions while making the end faces abut each other. With the fiber optic cable cover removed, the fiber optic connectors have been routinely used in the workplace to easily interconnect fiber optic cables. [0003] Japanese Patent No. 3445479 discloses a so-called mechanical splice type fiber optic connector comprising a splice assembly for securing a ferrule having a main cladding portion and a splice extending from the rear end surface of the ferrule. An extension of the primary cladding portio...

AI Technical Summary

Problems solved by technology

[0008] However, since the boundary 32 of the optical fiber core 31 has a step in which the diameter changes, if the main cladding portion 31 is bent inside the connector 30, there is a risk of stress concentration at the boundary 32, resulting in bending loss of the optical signal or breakage of the main cladding portion.

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