阅读说明：本技术 一种光纤束熔合封装装置及其封装方法 (Optical fiber bundle fusion packaging device and packaging method thereof ) 是由 周巧林 张恩隆 孙伟雄 马慧影 葛几凡 缪礼晔 张冬梅 曹兵 张尧宇 于 2020-12-30 设计创作，主要内容包括：本发明涉及一种光纤束熔合封装装置及其封装方法,属于光纤封装技术领域。包括侧向加压模具,所述侧向加压模具设于高频感应加热设备内腔,使得高频感应加热设备的感应线圈围绕侧向加压模具,所述侧向加压模具内活动穿设光纤束,所述光纤束能够沿着侧向加压模具竖向移动,所述高频感应加热设备对侧向加压模具加热,使得侧向加压模具内的光纤束裸纤段软化软化,后通过侧向加压模具对软化的光纤束裸纤段施加周向压力,实现光纤束熔合封装。本申请不仅操作便捷、缩短了光纤束封装时间,提高了光纤束封装效率,降低了生产成本。热熔之后,光纤束为同质整体,内部不存在异质结构,避免了热应力导致的光纤受损风险。(The invention relates to an optical fiber bundle fusion packaging device and a packaging method thereof, belonging to the technical field of optical fiber packaging. Including side direction pressurization mould, high frequency induction heating equipment inner chamber is located to side direction pressurization mould for high frequency induction heating equipment's induction coil centers on side direction pressurization mould, the fiber bundle is worn to establish in the side direction pressurization mould activity, the fiber bundle can be along the vertical removal of side direction pressurization mould, high frequency induction heating equipment heats side direction pressurization mould, makes the bare fiber section of fiber bundle in the side direction pressurization mould soften and soften, and the back exerts circumferential pressure to the bare fiber section of fiber bundle that softens through side direction pressurization mould, realizes that the fiber bundle fuses the encapsulation. The optical fiber bundle packaging device is convenient and fast to operate, shortens the optical fiber bundle packaging time, improves the optical fiber bundle packaging efficiency, and reduces the production cost. After hot melting, the optical fiber bundle is a homogeneous whole, and a heterostructure does not exist in the optical fiber bundle, so that the risk of optical fiber damage caused by thermal stress is avoided.)

1. An optical fiber bundle fusion-packaging device, characterized in that: including side direction pressurization mould (4), high frequency induction heating equipment inner chamber is located in side direction pressurization mould (4), makes high frequency induction heating equipment's induction coil (3) are around side direction pressurization mould (4), fiber bundle (1) is worn to establish in side direction pressurization mould (4) internalization, fiber bundle (1) can be along the vertical removal of side direction pressurization mould (4), high frequency induction heating equipment heats side direction pressurization mould (4) for fiber bundle (1) naked fiber section in side direction pressurization mould (4) is softened, exerts circumferential pressure through side direction pressurization mould (4) to the naked fine section of softened fiber bundle (1) afterwards, realizes that fiber bundle (1) fuses the encapsulation.

2. The fusion splice enclosure of claim 1, wherein: the lateral pressurizing mould (4) is a cylindrical structural member, a through fiber penetrating channel (4.1) is formed in the center of the lateral pressurizing mould (4), and the aperture of the inlet end of the fiber penetrating channel (4.1) is larger than that of the outlet end of the fiber penetrating channel (4.1), so that the longitudinal section of the fiber penetrating channel (4.1) is inverted trapezoid.

3. The fusion-splicing device for optical fiber bundles according to claim 2, wherein: the aperture of the outlet end of the fiber penetrating channel (4.1) corresponds to the diameter of the optical fiber bundle (1).

4. The fusion-splicing device for optical fiber bundles according to claim 2, wherein: the lateral pressurizing mould (4) is a high-temperature resistant material.

5. The fusion splice enclosure of claim 1, wherein: the optical fiber bundle (1) comprises a plurality of quartz optical fibers which are closely arranged and fixed through a clamp (2).

6. The fusion-splicing method for optical fiber bundles according to any one of claims 1 to 5, wherein: the packaging method comprises the following steps:

firstly, taking a plurality of optical fibers according to the packaging requirement to form an optical fiber bundle (1), and stripping a coating layer from one end of any optical fiber to obtain a bare optical fiber section;

aligning the front ends of the bare fiber sections of the optical fiber bundles (1), and fixing the optical fiber bundles (1) through a clamp (2);

and step three, vertically penetrating the bare fiber section of the optical fiber bundle (1) into a fiber penetrating channel (4.1) of a lateral pressurizing mold (4), enabling the front end of the bare fiber section of the optical fiber bundle (1) to be close to the outlet end of the fiber penetrating channel (4.1), opening a high-frequency induction heating device, heating the lateral pressurizing mold (4), enabling the lateral pressurizing mold (4) to reach an optical fiber softening point, further softening the bare fiber section of the optical fiber bundle (1), slowly pushing the optical fiber bundle (1) to move towards the outlet end of the fiber penetrating channel (4.1) until the bare fiber section of the optical fiber bundle (1) is exposed out of the outlet end of the fiber penetrating channel (4.1), enabling the outlet end of the fiber penetrating channel (4.1) to have circumferential pressure on the softened optical fiber bundle (1), and further completing fusion packaging of the optical fiber bundle.

7. The fusion-splicing method for optical fiber bundles according to claim 6, wherein: the stripping length of the coating layer in the first step is 3-7 cm.

8. The fusion-splicing method for optical fiber bundles according to claim 6, wherein: and the distance between the clamp (2) and the rear end of the bare fiber section of the optical fiber bundle (1) in the second step is 2-5 cm.

9. The fusion-splicing method for optical fiber bundles according to claim 6, wherein: and in the third step, the distance between the front end of the bare fiber section of the optical fiber bundle (1) and the outlet end of the fiber penetrating channel (4.1) is 4-8 cm.

10. The fusion-splicing method for optical fiber bundles according to claim 6, wherein: the temperature which can be borne by the lateral pressurizing mould (4) is higher than the melting point of the optical fiber.

Technical Field

The invention relates to an optical fiber bundle fusion packaging device and a packaging method thereof, belonging to the technical field of optical fiber packaging.

Background

With the continuous development of information technology, the application of optical fiber becomes more and more extensive. Optical devices made of optical fibers play an important role in the fields of optical fiber sensing, optical signal processing, medical instruments, illumination systems and the like. The optical device based on the optical fiber bundle can transmit multiple paths of different optical signals simultaneously or in a time-sharing manner in various application fields.

At present, the quartz optical fiber bundle is packaged by adopting an adhesive for bonding, and the compactness of the arrangement of the optical fiber bundle is influenced by the viscosity and the granularity of the adhesive. During curing, the difference in expansion coefficients of the adhesive and the optical fiber can generate thermal stress, which can cause the optical fiber to bear the risk of damage. The adhesive also has some effect on the finish when the end face is ground. In addition, the curing time of the adhesive is long, which reduces the encapsulation efficiency.

Chinese patent document CN110187446A discloses a method for manufacturing a multi-core multi-beam fiber connector, which comprises performing metallization pretreatment on an optical fiber, and then performing induction heating on the optical fiber bundle to fuse the optical fiber bundle into a whole to complete fusion packaging. The method takes the metal coating as a medium to thermally cure the optical fiber bundle into a whole, overcomes the defect of adhesive packaging, but has the defects of complex metallization process of the optical fiber, influence on the induction heating effect due to the uniformity of the thickness of the coating and higher metallization cost of the optical fiber.

Disclosure of Invention

The invention aims to solve the technical problem of providing an optical fiber bundle fusion packaging device and a packaging method thereof aiming at the prior art, which are convenient to operate, improve the packaging efficiency and effect of the optical fiber bundle and reduce the packaging cost of the optical fiber bundle.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides an optic fibre bundle fuses packaging hardware, includes side direction pressurization mould, the high frequency induction heating equipment inner chamber is located to side direction pressurization mould for the induction coil of high frequency induction heating equipment is around side direction pressurization mould, optic fibre bundle is worn to establish in the side direction pressurization mould activity, optic fibre bundle can be along the vertical removal of side direction pressurization mould, high frequency induction heating equipment is to side direction pressurization mould heating for the bare fiber section of optic fibre bundle in the side direction pressurization mould softens, and the later exerts circumferential pressure to the bare fiber section of optic fibre bundle that softens through side direction pressurization mould, realizes that optic fibre bundle fuses the encapsulation.

The lateral pressurizing mould is a cylindrical structural member, a through fiber penetrating channel is formed in the center of the lateral pressurizing mould, and the aperture of the inlet end of the fiber penetrating channel is larger than that of the outlet end of the fiber penetrating channel, so that the longitudinal section of the fiber penetrating channel is inverted trapezoid.

The aperture of the outlet end of the fiber penetrating channel corresponds to the diameter of the optical fiber bundle.

The lateral pressurizing mould is a high-temperature resistant material part.

The optical fiber bundle comprises a plurality of quartz optical fibers, the quartz optical fibers are closely arranged, and the quartz optical fibers are fixed through a clamp.

A fusion-splicing method for packaging optical fiber bundles, comprising the steps of:

firstly, taking a plurality of optical fibers according to the packaging requirement to form an optical fiber bundle, and stripping a coating layer from one end of any optical fiber to obtain a bare optical fiber section;

aligning the front ends of the bare fiber sections of the optical fiber bundles, and fixing the optical fiber bundles through a clamp;

and step three, vertically penetrating the bare fiber section of the optical fiber bundle into a fiber penetrating channel of a lateral pressurizing mold, enabling the front end of the bare fiber section of the optical fiber bundle to be close to the outlet end of the fiber penetrating channel, opening a high-frequency induction heating device, heating the lateral pressurizing mold, enabling the lateral pressurizing mold to reach the optical fiber softening point, further softening the bare fiber section of the optical fiber bundle, slowly pushing the optical fiber bundle to move towards the outlet end of the fiber penetrating channel until the bare fiber section of the optical fiber bundle is exposed out of the outlet end of the fiber penetrating channel, and enabling the outlet end of the fiber penetrating channel to have circumferential pressure on the softened optical fiber bundle, thereby completing fusion packaging.

The stripping length of the coating layer in the first step is 3-7 cm.

And the distance between the clamp in the second step and the rear end of the bare fiber section of the optical fiber bundle is 2-5 cm.

And in the third step, the distance between the front end of the bare fiber section of the optical fiber bundle and the outlet end of the fiber penetrating channel is 4-8 cm.

The lateral pressure die can withstand a temperature higher than the melting point of the optical fiber.

Compared with the prior art, the invention has the advantages that: the fiber bundle fusion packaging device and the packaging method thereof have the advantages that the whole packaging process does not need to use an adhesive, the fiber bundle is directly molded after being heated, and the operation is convenient; the optical fiber bundle is formed quickly, and compared with an adhesive mode, the long-time adhesive curing process does not need to be waited, so that the optical fiber bundle packaging time is shortened, the optical fiber bundle packaging efficiency is improved, and the production cost is reduced. After hot melting, the optical fiber bundle is a homogeneous whole, a heterostructure does not exist in the optical fiber bundle, the risk of optical fiber damage caused by thermal stress can be eliminated, and the optical fiber bundle is beneficial to subsequent grinding and polishing as a whole.

Drawings

FIG. 1 is a schematic view of an optical fiber bundle fusion-packaging apparatus according to an embodiment of the present invention;

FIG. 2 is a three-dimensional schematic view of the lateral compression mold of FIG. 1;

in the figure, 1 an optical fiber bundle, 2 clamps, 3 an induction coil, 4 a lateral pressurizing mould and 4.1 a fiber penetrating channel.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 and 2, the optical fiber bundle fusion-splicing and packaging apparatus in this embodiment includes a cylindrical lateral pressurizing mold 4, and the lateral pressurizing mold 4 is provided in an inner cavity of a high-frequency induction heating apparatus such that an induction coil 3 of the high-frequency induction heating apparatus surrounds the lateral pressurizing mold 4. The center of the lateral pressurizing mould 4 is provided with a through fiber penetrating channel 4.1, and the aperture of the inlet end of the fiber penetrating channel 4.1 is larger than that of the outlet end of the fiber penetrating channel 4.1, so that the longitudinal section of the fiber penetrating channel 4.1 is in an inverted trapezoid shape. The bare fiber section of the optical fiber bundle 1 is arranged in the fiber passing channel 4.1, and the aperture of the outlet end of the fiber passing channel 4.1 corresponds to the diameter of the optical fiber bundle 1, so that the optical fiber bundle 1 can vertically move along the fiber passing channel 4.1. The high-frequency induction heating equipment heats the lateral pressurizing mould 4, softens the bare fiber section of the optical fiber bundle 1 in the fiber passing channel 4.1, and moves the softened bare fiber section of the optical fiber bundle 1 to the outlet end of the fiber passing channel 4.1, so that the outlet end of the lateral pressurizing mould 4 applies circumferential pressure to the softened optical fiber bundle 1, and fusion and packaging of the end part of the optical fiber bundle are realized.

The optical fiber bundle 1 comprises a plurality of quartz optical fibers which are closely arranged and fixed through a clamp 2.

The lateral pressurizing mould 4 is made of high-temperature-resistant materials, the lateral pressurizing mould 4 is made of tungsten steel, and the temperature which can be borne by the lateral pressurizing mould 4 is higher than the melting point of the quartz optical fiber.

A fusion packaging method for an optical fiber bundle comprises the following steps:

firstly, taking a plurality of quartz optical fibers according to the packaging requirement to form an optical fiber bundle 1, stripping a coating layer at one end of any quartz optical fiber, wherein the stripping length of the coating layer is related to the number of packaging cores and the specification of the quartz optical fiber, and is generally 3-7 cm, and preparing an optical fiber bare section;

aligning the front ends of the bare fiber sections of the optical fiber bundle 1, fixing the optical fiber bundle 1 by a silica gel clamp with a hole in the center, wherein the distance between the clamp 2 and the rear end of the bare fiber section of the optical fiber bundle 1 is 3 cm;

and step three, vertically penetrating the bare fiber section of the optical fiber bundle 1 into a fiber penetrating channel 4.1 of a lateral pressurizing mold 4, so that the distance between the front end of the bare fiber section of the optical fiber bundle 1 and the outlet end of the fiber penetrating channel 4.1 is about 5mm, and the distance is obtained through visual inspection. Opening the high-frequency induction heating equipment, wherein the heating capacity of the high-frequency induction heating equipment reaches more than 2000 ℃, heating the lateral pressurizing mold 4 to ensure that the lateral pressurizing mold 4 reaches the softening point (about 1700 ℃) of the quartz optical fiber, softening the bare fiber section of the optical fiber bundle, slowly pushing the optical fiber bundle 1 to move towards the outlet end of the fiber penetrating channel 4.1 until the bare fiber section of the optical fiber bundle 1 is exposed out of the outlet end of the fiber penetrating channel 4.1, and extruding the optical fiber bundle when the outlet end of the fiber penetrating channel 4.1 has circumferential pressure on the softened optical fiber bundle 1, thereby completing the fusion packaging of the optical fiber bundle 1.

The whole packaging process does not need to use an adhesive, and the optical fiber bundle is heated and directly molded by the circumferential pressure of the outlet end of the fiber penetrating channel to the optical fiber bundle. The optical fiber bundle packaging device is convenient to operate and fast in optical fiber bundle molding, shortens the optical fiber bundle packaging time, improves the optical fiber bundle packaging efficiency, and reduces the production cost. After hot melting, the optical fiber bundle is a homogeneous whole, a heterostructure does not exist in the optical fiber bundle, the risk of optical fiber damage caused by thermal stress is avoided, and meanwhile, the optical fiber bundle is taken as a whole and is also beneficial to subsequent grinding and polishing.

In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.