CN216696767U

CN216696767U - Optical fiber jumper wire

Info

Publication number: CN216696767U
Application number: CN202123450832.8U
Authority: CN
Inventors: 刘腾; 丁鹏; 黄银波
Original assignee: Realton Suzhou Medical Technology Co ltd
Current assignee: Realton Suzhou Medical Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-07
Anticipated expiration: 2031-12-31

Abstract

The utility model provides an optical fiber jumper which comprises an optical fiber joint, a light receptor, a fixing cap, a fiber core, an optical fiber coating layer and adhesive glue. The laser beam is diffused and the refractive index of the light receptor is gradually changed, so that the laser beam irradiates the optical fiber connector at a larger divergence angle, the laser power density is obviously reduced, and the laser connector only generates heat and is not damaged.

Description

Optical fiber jumper wire

Technical Field

The utility model relates to the technical field of optical fibers, and further relates to an optical fiber jumper and an optical fiber comprising the same.

Background

In the optical fiber transmission of high-power laser, the heating damage of the optical fiber is always an important problem, the QBH optical fiber, the QCS optical fiber and the like which appear in recent years better solve the problem, and the heat can be brought out through liquid circulation by immersing the optical fiber into cooling liquid. However, in some special occasions such as medical use, the diameter of the optical fiber is required and cannot be too thick, so that a cooling liquid circulation technology cannot be introduced. At this point, cooling of the fiber is not a good process.

In optical fiber coupling, various factors such as misalignment between optical fibers and laser, overlarge laser focal spot, deformation in optical fiber processing and the like can cause laser to overflow the optical fibers, continuously heat surrounding objects and cause thermal damage, and the condition is particularly generated in a jumper structure at the head of the optical fiber. The optical fiber head is burst, an operator is scalded, the inside of the laser is damaged, and the like.

Therefore, an optical fiber jumper wire is to be provided, so that the laser connector only generates heat and is not damaged.

SUMMERY OF THE UTILITY MODEL

The utility model provides an optical fiber jumper wire, which at least solves the technical problem that a laser connector in the prior art is damaged while generating heat.

The utility model provides an optical fiber jumper which comprises an optical fiber joint, a light receptor, a fixing cap, a fiber core, an optical fiber coating layer and adhesive glue.

Optionally, a circular hole is formed in an end face of the optical fiber connector, the photoreceptor is disposed in the circular hole of the optical fiber connector, the photoreceptor is not connected to the optical fiber connector, and the fiber core is not connected to the optical fiber connector and the photoreceptor.

Optionally, the fixing cap and the optical fiber connector are connected by pressing or screwing.

Optionally, the optical fiber connector and the optical fiber coating layer are bonded.

Optionally, the adhesive is applied to the outside of the optical fiber connector.

Optionally, the absorption of the bonding glue to the laser wavelength is less than 1%.

Optionally, the material of the photoreceptor includes quartz, glass or crystal highly transparent to laser wavelength.

Optionally, the refractive index of the photoreceptor is graded.

Optionally, the optical fiber connector has no coating layer inside.

Optionally, the optical fiber patch cord includes the optical fiber connector and an optical fiber.

Aiming at the defects in the prior art, the utility model provides the optical fiber jumper wire with the novel structure, the photoreceptor is introduced into the optical fiber joint and is made of quartz, glass or crystal and other materials which are highly transparent to the laser wavelength, the refractive index of the photoreceptor is gradually changed, and the refractive index is lower when the photoreceptor is closer to the optical fiber, so that the light is gradually far away from the optical fiber in transmission. The laser does not enter or overflow the optical fiber, and then enters the light receptor, because of high transmittance to the laser, the light receptor does not absorb the laser and can not be damaged, the function of the light receptor is to enable the laser beam to be uniformly transmitted for a certain distance, because the laser beam is divergent and the refractive index of the light receptor is gradually changed, the laser beam irradiates the optical fiber joint with a larger divergence angle, at the moment, the laser power density is obviously reduced, and the laser joint only heats and is not damaged.

In addition, all the optical fibers entering the optical fiber connector are stripped of the coating layer, the adhesive glue is coated between the outer part of the optical fiber connector and the optical fiber coating layer, and the adhesive glue is not subjected to direct irradiation of laser to be rapidly heated. And the coating layer does not exist in the optical fiber connector, so that the optical fiber is prevented from being damaged due to the heating of the coating layer.

Finally, the adhesive paste is non-absorbing to the laser wavelength, so that the laser light impinging on the structured glue occasionally does not cause it to absorb heat.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

fig. 1 is an exploded schematic view of an alternative novel optical fiber patch cord according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an optional novel optical fiber patch cord according to an embodiment of the present invention.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments. It is understood that these embodiments are given solely for the purpose of enabling those skilled in the art to better understand and to practice the utility model, and are not intended to limit the scope of the utility model in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The present embodiment is shown in fig. 1 and 2.

The embodiment of the utility model provides an optical fiber jumper, which comprises an optical fiber connector 1, a photoreceptor 2, a fixing cap 3, a fiber core 41, an optical fiber coating layer 42 and an adhesive 5, wherein the photoreceptor 2 is arranged in the optical fiber connector 1, the fixing cap 3 is connected with the optical fiber connector 1, the fiber core 41 penetrates into the optical fiber connector 1 and the photoreceptor 2, and the adhesive 5 is coated between the optical fiber connector 1 and the optical fiber coating layer 42.

Furthermore, a circular hole is formed in an end surface of the optical fiber connector 1, the light receptor 2 is disposed in the circular hole of the optical fiber connector 1, the light receptor 2 is not connected to the optical fiber connector 1, and the core 41 is not connected to the optical fiber connector 1 and the light receptor 2.

Further, the fixing cap 3 and the optical fiber connector 1 are connected by pressing or screwing.

Further, the optical fiber connector 1 and the optical fiber coating layer 42 are bonded to each other.

Further, the adhesive 5 is applied to the outside of the optical fiber connector 1.

Further, the absorption of the bonding paste 5 to the laser wavelength is less than 1%.

Further, the material of the photoreceptor 2 includes quartz, glass or crystal highly transparent to the laser wavelength.

Further, the refractive index of the photoreceptor 2 is graded.

Further, the optical fiber connector 1 has no coating layer inside.

Further, the optical fiber patch cord comprises the optical fiber connector 1 and an optical fiber.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

An optical fiber jumper wire with a novel structure comprises an optical fiber connector 1, a photoreceptor 2, a fixing cap 3, a fiber core 41, an optical fiber coating layer 42 and adhesive 5. By inserting the photoreceptor into the optical fiber connector, stray laser which does not enter the optical fiber can be uniformly dissipated in the optical fiber connector, and the optical fiber connector is prevented from being damaged by being concentrated at a certain point. The optical fiber connector has no adhesive glue inside, and all the adhesive glue is coated outside and adhered to the optical fiber coating layer. The damage caused by too high temperature rise of stray laser absorbed by the adhesive is avoided.

First, a circular hole is enlarged inside the optical fiber connector 1, and the diameter of the circular hole is matched with that of the photoreceptor 2. The photoreceptor 2 is put into the round hole and fixed from the end by the fixing cap 3, the fixing mode can be screw thread, mechanical holding and the like, but the fixing glue can not be introduced. Stripping a coating layer from the optical fiber, wherein the length of the fiber core 41 is slightly larger than that of the optical fiber connector 1, penetrating the fiber core 41 into a combination body of the optical fiber connector 1 and the light receptor 2, and coating the adhesive 5 outside the optical fiber connector 1 to adhere the optical fiber coating layer 42.

Example 1: the 532nm150W laser is coupled into the 20 optical fiber patch cords manufactured by the method, the joint temperature of the 20 optical fibers rises by 5 ℃ on average after the light is transmitted for 1 hour, and the phenomenon that the optical fiber joints are damaged does not occur. For comparison, the average temperature rise of 20 optical fiber jumpers adopting the conventional structure is 19 ℃.

Example 2: the 10 optical fiber jumpers manufactured by the method couple 1940nm60W laser into the jumper, the joint of 10 optical fibers is heated up to 3 ℃ averagely after light is transmitted for 1 hour, and the phenomenon that the optical fiber joints are damaged does not occur. For comparison, the average temperature rise of 10 optical fiber jumpers adopting the conventional structure is 17 ℃.

A novel optical fiber jumper wire structure comprises: punch on optical fiber splice 1 terminal surface, the size in hole just can put into the photic body 2, put into optical fiber splice 1 with the photic body 2, do not have between photic body 2 and the optical fiber splice 1 to be connected, be connected locking cap 3 and optical fiber splice 1, the connected mode is for compressing tightly or the spiral shell is buckled and is screwed up, the fibre core 41 that will peel off optical fiber coating 42 penetrates optical fiber splice 1 and photic body 2, no connection between fibre core 41 and optical fiber splice 1 and the photic body 2, scribble adhesive 5 between optical fiber splice 1 and optical fiber coating 42, be the bonding between optical fiber splice 1 and the optical fiber coating 42.

The working principle is as follows: when laser is incident on the optical fiber, a small amount of energy cannot enter the optical fiber due to some reason, or cannot be transmitted after entering the optical fiber, and leaks out of the optical fiber at once and enters the optical receptor 2, the optical receptor 2 is made of quartz or glass and is basically transparent and non-absorbent to the laser wavelength, as the focusing light spot is positioned on the end surface of the fiber core 41 when the laser is incident, the laser beam is in a divergent state starting from the end surface of the optical fiber to the inside of the optical fiber, the optical receptor 2 has 2 functions, and the non-heating state after the laser is irradiated is used for expanding the divergent state, the power density is smaller after the laser is irradiated on the optical fiber joint 1, and the local temperature extreme value is smaller.

The advantages are that:

1. in the optical fiber connector 1, the too high local temperature extreme value can cause the damage of the optical fiber connector 1, such as deformation, splashing, fragmentation and the like, the local temperature extreme value is reduced, and the service life and the reliability of the optical fiber jumper wire are improved.

2. The adhesive absorbs laser, so that burning is possible during direct irradiation, the coating position of the adhesive 5 is changed from the inside of the optical fiber jumper wire 1 to the outside, and the burning danger caused by the direct irradiation of the laser on the adhesive is reduced. Moreover, the adhesive 5 is made of a material with low absorption to the laser wavelength, which also reduces the risk of burning.

The innovation points are as follows:

1. introducing a photoreceptor 2 in the optical fiber joint 1;

2. the light receptor 2 adopts a graded refractive index material, so that the passing laser beam is more divergent;

3. coating the adhesive 5 on the outer surface of the optical fiber jumper wire 1;

4. the material of the adhesive 5 is selected to have small absorption to laser wavelength.

It should be noted that although in the above detailed description several units/modules or sub-units/modules of the apparatus are mentioned, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module according to embodiments of the utility model. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.

While the spirit and principles of the utility model have been described with reference to several particular embodiments, it is to be understood that the utility model is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The utility model is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. The optical fiber jumper comprises an optical fiber connector (1), a photoreceptor (2), a fixing cap (3), a fiber core (41), an optical fiber coating layer (42) and adhesive glue (5), wherein the photoreceptor (2) is arranged in the optical fiber connector (1), the fixing cap (3) is connected with the optical fiber connector (1), the fiber core (41) penetrates into the optical fiber connector (1) and the photoreceptor (2), and the adhesive glue (5) is coated between the optical fiber connector (1) and the optical fiber coating layer (42).

2. The optical fiber patch cord according to claim 1, wherein the end face of the optical fiber connector (1) is provided with a circular hole, the photoreceptor (2) is disposed in the circular hole of the optical fiber connector (1), the photoreceptor (2) is not connected with the optical fiber connector (1), and the fiber core (41) is not connected with the optical fiber connector (1) and the photoreceptor (2).

3. The optical fiber jumper according to claim 1, wherein the fixing cap (3) is connected to the optical fiber connector (1) by pressing or screwing.

4. The optical fiber jumper according to claim 1, characterized in that there is an adhesive bond between the optical fiber connector (1) and the optical fiber coating (42).

5. The optical fiber jumper according to claim 1, characterized in that the adhesive glue (5) is applied on the outside of the optical fiber stub (1).

6. The optical fiber jumper according to claim 1, characterized in that the adhesive glue (5) has an absorption of less than 1% at the laser wavelength.

7. The optical fiber jumper according to claim 1, characterized in that the material of the photoreceptor (2) comprises quartz, glass or crystal highly transparent to laser wavelengths.

8. The optical fiber jumper according to claim 1, characterized in that the refractive index of the photoreceptor (2) is graded.

9. The optical fiber jumper according to claim 5, characterized in that the interior of the optical fiber joint (1) is free of coating.

10. The optical fiber jumper according to claim 1, characterized in that it comprises the optical fiber connector (1) and an optical fiber.