CN201917680U

CN201917680U - Three-core optical fiber sealing section

Info

Publication number: CN201917680U
Application number: CN2010206086357U
Authority: CN
Inventors: 关培
Original assignee: CHUXING OPTICAL FIBER APPLICATION TECHNOLOGIES Ltd
Current assignee: CHUXING OPTICAL FIBER APPLICATION TECHNOLOGIES Ltd
Priority date: 2010-11-16
Filing date: 2010-11-16
Publication date: 2011-08-03
Anticipated expiration: 2020-11-16

Abstract

The utility model relates to the technical field of optical fiber sealing, and particularly discloses a three-core optical fiber sealing section which is formed by connecting and combining a metalized optical fiber, a gold-plated Kovar tube, a stainless steel tube, an ausn solder (containing 80% Au and 20% Ni), Araldite 2011 glue, phi1, eight black PVC (polyvinyl chloride) tubes, phi0, nine white inflaming retarding sleeves and a phi3 shrinkable tube. The metalized optical fiber is formed by stripping a coating layer at the middle section of the optical fiber and plating a 3-4um nickel layer and a 0.1-0.2um gold layer on a bare optical fiber in a chemical or physical method; and a nickel layer and a gold layer are electrically plated on the outer surface of the Kovar tube. The three-core optical fiber sealing section is filled with the ausn solder, utilizes the stainless steel tube to transit and protect welding areas, and adopts the Araldite 2011 glue for filling so as to reduce the stress of the welding areas.

Description

Three core fibre sealing sections

Technical field

The utility model relates to the optical fiber seal technical field, relates in particular to a kind of optical fiber seal joint.

Background technology

The optical fiber seal joint is a kind of product that metallization optical fiber and metal sleeve combination back form.Be used for the level Hermetic Package between coupling, location welding and the optical fiber and the shell of all kinds of active, passive devices.Adopt 280 ℃ Au/Sn scolder seal welding between optical fiber and the sleeve pipe, overlap effective cut down or the pure nickel material is made, be convenient to laser bonding.Airtight portion can bear 180 ℃ secondary welding temperature, thereby has solved the metallization sealing problem between optical fiber, sleeve pipe and the shell.

The utility model content

The technical problems to be solved in the utility model is: guarantee to become yi word pattern closely to arrange after three optical fiber process welding technologys; Adopt a fixed structure to protect three optical fiber coatings; Also to protect bare fibre when being subjected to external impacts, can not fracture; Guarantee the sealing of total system.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is:

A kind of three core fibre sealing sections comprise:

Metallization optical fiber, after the coat of the stage casing part of optical fiber is peeled off, on bare fibre by the method for chemistry or physics plate the nickel dam of 3-4um, the gold layer of 0.1-0.2um forms; Three metallization optical fiber become the in-line arrangement bonding;

The metalwork part, by one gold-plated cut down the pipe and a stainless-steel tube form; The gold-plated endoporus that cuts down pipe is the flat hole of going the size by optical fiber arrangements to be cut into by the mode of line cutting; The gold-plated weld zone end that cuts down pipe has a step, and the endoporus of its external diameter and stainless-steel tube is little clearance fit; Metallization optical fiber and gold-plated cutting down between the pipe are welded to connect with golden soldering sheet (80%Au, 20%Ni);

Protective casing part: combine by Φ 1.8 black PVC pipes, Φ 0.9 white fire retardant sleeve, Φ 3 heat-shrink tubes, be used to protect optical fiber coating.

As optimized technical scheme, three optical fiber two ends all are coated with the colour code of different colours, so that difference.

The beneficial effects of the utility model are: golden tin solder is filled, and stainless-steel tube over current protection welding region adopts and likes that the jail reaches glue and fills the stress that reduces the weld zone.

Description of drawings

Fig. 1 the utility model structural representation.

The gold-plated pipe longitudinal section that cuts down of Fig. 2 A the utility model.

The gold-plated pipe longitudinal section that cuts down of Fig. 2 B the utility model.

The gold-plated pipe sectional elevation that cuts down of Fig. 2 C the utility model.

The critical piece explanation: 1 metallization optical fiber, 2 like that the jail reaches glue, 3 stainless-steel tubes, the 4 gold-plated pipes that cut down, 5 Φ, 1.8 black PVC pipes, 6 Φ, 3 heat-shrink tubes, 7 Φ, 0.9 white fire retardant sleeve.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to qualification of the present utility model.

As shown in Figure 1, a kind of three core fibre sealing sections of the utility model comprise:

The metalwork part is made up of the gold-plated 4 and stainless-steel tubes 3 of pipe (seeing Fig. 2 A, 2B, 2C) that cut down; The gold-plated endoporus that cuts down pipe is the flat hole of going the size by optical fiber arrangements to be cut into by the mode of line cutting; The gold-plated weld zone end that cuts down pipe has a step, and the endoporus of its external diameter and stainless-steel tube is little clearance fit; Metallization optical fiber 1 and gold-plated cutting down between the pipe are welded to connect with golden soldering sheet (80%Au, 20%Ni);

Protective casing part: combine by Φ 1.8 black PVC pipes 5, Φ 0.9 white fire retardant sleeve 7, Φ 3 heat-shrink tubes 6, be used to protect optical fiber coating.

Can't distinguish owing to can cut down the optical fiber on both sides, pipe welding back, therefore three optical fiber two ends all can be distinguished with different colors (such as red, blue, black), and it is convenient to allow the user use like this.

Operating process:

(1) bonding: under 45 times of stereomicroscopes, 3 gold-plated optical fiber in stage casing are arranged into " one " font on the microslide anchor clamps, 3 optical fiber are alignd with root on one side, with the blue high temperature gummed tape of 3M optical fiber is fixed, like that in the optical fiber root points jail reaches 2011 glue, then whole anchor clamps were placed on 100 ℃ the temperature control heating furnace baking 20 minutes.(annotating: should be controlled in the root 2mm during point glue) as far as possible

(2) welding

1. bonding optical fiber is penetrated stainless-steel tube, can cut down pipe, ф 1.8 black sleeve pipes and the black fever draw.

2. with the ready pipe that cuts down, press from both sides the appropriate location of the graphite electrode to the micropositioning stage carefully with tweezers.

3. optical fiber is positioned on the micropositioning stage.In the air-breathing groove, open aspiration pump, hold optical fiber, transfer micropositioning stage.

4. through suitably adjusting, on display, observe and expose the fiber section that can cut down pipe, and it is transferred to claimed range, and (the gold layer exposes can cut down pipe≤1mm), put golden soldering sheet with tweezers, and an amount of scaling powder on the point is heated to weld tabs is melted.

(3) assembling

1. put a small amount of 353ND glue and can cut down pipe and bond together with stainless-steel tube, baking temperature is 120 ℃, and the time is 5 minutes.

2. Φ 1.8 black sleeve pipes are pierced into and to cut down pipe, click and enter an amount of love jail and reach glue, be placed on 60 ℃ the heating furnace baking 1 hour.

3. three optical fiber are penetrated white sleeve pipe respectively, the love jail an amount of at Φ 1.8 black sleeve pipes and white sleeve pipe junction point reaches glue.

4. the Φ 3 black fever draws are baked to fully with two kinds of sleeve pipe parcels by the temperature about 125 ℃.

5. heat-shrink tube partly was placed on 60 ℃ the temperature controlling stove baking 1 hour.

The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection domain of the present utility model is not limited thereto.Being equal to that those skilled in the art are done on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.

Claims

1. a core fibre sealing section is characterized in that, comprising:

Metallization optical fiber after the coat of the stage casing part of optical fiber is peeled off, forms the nickel dam of 3-4um, the gold layer of 0.1-0.2um on bare fibre; Three metallization optical fiber become the in-line arrangement bonding;

The metalwork part, by one gold-plated cut down the pipe and a stainless-steel tube form; The gold-plated endoporus that cuts down pipe is the flat hole of going the size by optical fiber arrangements to be cut into by the mode of line cutting; The gold-plated weld zone end that cuts down pipe has a step, and the endoporus of its external diameter and stainless-steel tube is little clearance fit; Metallization optical fiber and gold-plated cutting down between the pipe are welded to connect;

Protective casing part: combine by Φ 1.8mm black PVC pipe, Φ 0.9mm white fire retardant sleeve, Φ 3mm heat-shrink tube.

2. three core fibre sealing sections as claimed in claim 1 is characterized in that three optical fiber two ends all are coated with the colour code of different colours, so that difference.