JPH0429105A - Ferrule for single optical fiber - Google Patents

Abstract

PURPOSE:To easily fix the optical fiber to the ferrule in a short time by placing the optical fiber in the V groove of a ferrule frame body and pressing a fiber pressure member fitted to a ferrule frame body. CONSTITUTION:A coated optical fiber centering hole 2 is formed atop of a ferrule main body 1 and a coated optical fiber 4 is passed through this hole 2 to easily align the optical fiber. The coated optical fiber 4 is inserted into this ferrule 1 and set along the V groove 6 and then the fiber pressure member 5 on the fiber ferrule body 3 is pressed in this state to fix the coated optical fiber 4 firmly. Consequently, the ferrule can easily be fixed to the optical fiber end in a short time without any troublesome operation nor setting time of an adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ferrule attached to a fiber end in an optical fiber connector connection.

;Summary of the Invention] The present invention places an optical fiber along the groove of the ferrule frame, and presses a fiber holding member also attached to the ferrule frame, thereby placing the optical fiber in the ferrule frame. ■It is characterized by being mechanically fixed in the groove.

[Conventional technology]

In optical connectors where a ferrule is attached to the end of an optical fiber, axial movement of the optical fiber relative to the ferrule end face does not damage the optical fiber itself or adversely affect optical performance, including long-term reliability, so the optical fiber and ferrule are strong. must be fixed to

-C used an adhesive to fix the optical fiber to the ferrule, and used the adhesive strength of the adhesive to fix the optical fiber.

[Problem to be solved by the invention]

Fixing methods using adhesives focus on the mechanical properties obtained through chemical changes in the adhesive, so in order to make it chemically stable, it is necessary to irradiate it with ultraviolet rays.
You have to do things like kashichi. Further, even if an adhesive that can be cured at room temperature is used, it is generally necessary to allow one or two days for curing time in order to obtain a stable state.

Considering the workability of these actions on-site, there are problems such as the need for long work periods and the need for tools such as heaters and ultraviolet irradiators in narrow spaces or where there is no power source near the work site. .

CII! Means for Solving the Problems] The present invention aims to solve the troublesome problems of the above-mentioned adhesive fixing method, and to mechanically fix the optical fiber firmly to the ferrule by simply pressing the optical fiber against the fiber holding member. There is.

〔Example〕

FIG. 1 is a perspective view showing the internal structure of a ferrule for a single-core optical fiber according to the present invention. The following will explain based on the drawings.

First, regarding the configuration, this single-core optical fiber ferrule consists of 1 ferrule body, 3 ferrule frame, and 6 vl.
, 5 fiber holding members.

Two strand centering holes are provided at the tip of the first ferrule body, and by passing the fiber strand through these holes, it is possible to easily center the optical fiber.

Next, fixing of the optical fiber will be explained. Insert the fiber wire No. 4 into this ferrule, and insert the fiber wire into the No. 6 groove. In this state, press the fiber holding member 5 on the ferrule frame 3 to firmly fix the fiber wire.

〔Effect of the invention〕

According to the present invention, by directly pressing and fixing the fiber wire with the fiber holding member, it is possible to fix the ferrule to the end of the optical fiber easily and quickly without the troublesome work of adhesive or curing time. Get the effect you can.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the internal structure of a ferrule for a single optical fiber according to the present invention. Ferrule body Fiber wire centering hole Ferrule frame V groove Fiber holding member Fiber wire

Claims (2)

[Claims] (1) A ferrule body with an optical fiber strand centering hole at the tip, and a B on the same axis as the strand centering hole of the ferrule body.
A ferrule for an optical fiber, comprising a ferrule frame body having a groove, and a fiber holding member located in a hole drilled in the ferrule frame body and located above the V-groove. (2) The ferrule for a single-core optical fiber according to claim 1, wherein the holding member uniformly presses and fixes the optical fiber onto the V-groove.