A fiber optic jumper

Abstract

The present application provides a kind of optical fiber jumper, the optical fiber jumper includes optical fiber connector, light receiver, fixed cap, core, optical fiber coating and adhesive, the light receiver is placed in the optical fiber connector, the fixed cap is connected with the optical fiber connector, the core is inserted into the optical fiber connector and the light receiver, the adhesive is coated between the optical fiber connector and the optical fiber coating.Light receiver is not damaged by not absorbing laser, and the laser beam is uniformly transmitted for a distance therein, since the laser beam is divergent and the refractive index of the light receiver is gradually changed, the laser beam is irradiated to the optical fiber connector with a larger divergence angle, at this time, the laser power density is significantly reduced, so that the laser connector only generates heat, without damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical fiber technology, further relates to an optical fiber patch cord and an optical fiber comprising the same. BACKGROUND

[0002] In the optical fiber transmission of high-power laser, the optical fiber heating damage has always been an important problem. In recent years, QBH, QCS optical fiber and other better solutions have solved this problem. By immersing the optical fiber in the cooling liquid, the heat can be taken out through liquid circulation. However, in some special occasions such as medical treatment, there are requirements for the diameter of the optical fiber, which cannot be too thick, so the cooling liquid circulation technology cannot be introduced. At this time, the cooling of the optical fiber is not good.

[0003] In the optical fiber coupling, the misalignment of the optical fiber and the laser, the too large laser focal spot, the deformation in the optical fiber processing and other factors will all cause the laser to overflow the optical fiber, continuously heating the surrounding objects, leading to thermal damage. This situation especially occurs in the jumper structure of the optical fiber head. It causes the optical fiber head to burst, the operator to be scalded, and the laser internal to be damaged.

[0004] Therefore, an optical fiber jumper cable is needed to make the laser connector only heat without damage. SUMMARY

[0005] The present application provides an optical fiber jumper cable to at least solve the technical problem that the laser connector heats and is damaged at the same time in the prior art.

[0006] The present application provides an optical fiber jumper cable, which comprises an optical fiber connector, a light receiver, a fixing cap, a fiber core, an optical fiber coating layer and an adhesive. The light receiver is placed in the optical fiber connector. The fixing cap is connected with the optical fiber connector. The fiber core penetrates into the optical fiber connector and the light receiver. The adhesive is coated between the optical fiber connector and the optical fiber coating layer.

[0007] Optionally, the end face of the optical fiber connector is provided with a circular hole. The light receiver is placed in the circular hole of the optical fiber connector. The light receiver is not connected with the optical fiber connector. The fiber core is not connected between the optical fiber connector and the light receiver.

[0008] Optionally, the connection mode of the fixing cap and the optical fiber connector is compression or screw tightening.

[0009] Optionally, the optical fiber connector and the optical fiber coating layer are bonded.

[0010] Optionally, the adhesive is coated on the outside of the optical fiber connector.

[0011] Optionally, the absorption of the adhesive to the laser wavelength is less than 1%.

[0012] Optionally, the material of the light receiver includes quartz, glass or crystal which has high transmittance to laser wavelength.

[0013] Optionally, the refractive index of the light receiver is gradually changed.

[0014] Optionally, the inside of the fiber joint has no coating layer.

[0015] Optionally, the fiber jumper includes the fiber joint and the optical fiber.

[0016] The present application aims at the above-mentioned deficiencies in the prior art, and proposes a new type of fiber jumper. A light receiver is introduced into the fiber joint, which is composed of quartz, glass or crystal which has high transmittance to laser wavelength, and the refractive index of the light receiver is gradually changed. The closer to the optical fiber, the lower the refractive index, so that the light gradually moves away from the optical fiber during transmission. After the laser does not enter or overflow the optical fiber, it first enters the light receiver. Since the light receiver has high transmittance to laser, it will not be damaged by absorbing laser. The function of the light receiver is to allow the laser beam to uniformly transmit a distance in it. Since the laser beam is divergent and the refractive index of the light receiver is gradually changed, the laser beam is irradiated to the fiber joint with a larger divergence angle. At this time, the laser power density is significantly reduced, so that the laser joint only generates heat and is not damaged.

[0017] In addition, the optical fibers entering the inside of the fiber joint are all stripped of the coating layer, and the adhesive is coated between the outside of the fiber joint and the coating layer of the optical fiber. The adhesive will not be directly irradiated by the laser and will not be sharply heated. Similarly, there is no coating layer in the inside of the fiber joint, which avoids the damage of the optical fiber caused by the heating of the coating layer.

[0018] Finally, the adhesive is not absorbed to the laser wavelength, so that the laser occasionally irradiated to the structural adhesive will not cause it to absorb heat. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 An optional new type of fiber jumper explosion schematic diagram provided for an embodiment of the present application;

[0021] Figure 2 A cross-sectional schematic diagram of an optional new type of fiber jumper provided for an embodiment of the present application. DETAILED DESCRIPTION

[0022] The principles and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, and are not intended to limit the scope of the present application in any way. Rather, these embodiments are provided to make the present application disclosure more thorough and complete, and to convey the scope of the present application to those skilled in the art completely.

[0023] The present embodiment is shown in Figure 1 and Figure 2 .

[0024] The present embodiment provides an optical fiber jumper, which comprises a fiber joint 1, a light receiver 2, a fixing cap 3, a fiber core 41, a fiber coating 42, and an adhesive 5. The light receiver 2 is placed in the fiber joint 1, the fixing cap 3 is connected to the fiber joint 1, the fiber core 41 penetrates into the fiber joint 1 and the light receiver 2, and the adhesive 5 is coated between the fiber joint 1 and the fiber coating 42.

[0025] Further, the end face of the fiber joint 1 is provided with a circular hole, the light receiver 2 is placed in the circular hole of the fiber joint 1, the light receiver 2 is not connected to the fiber joint 1, and the fiber core 41 is not connected between the fiber joint 1 and the light receiver 2.

[0026] Further, the fixing cap 3 is connected to the fiber joint 1 by pressing or screwing.

[0027] Further, the fiber joint 1 and the fiber coating 42 are bonded.

[0028] Further, the adhesive 5 is coated on the outside of the fiber joint 1.

[0029] Further, the absorption of the adhesive 5 to the laser wavelength is less than 1%.

[0030] Further, the material of the light receiver 2 comprises quartz, glass or crystal with high transparency to the laser wavelength.

[0031] Further, the refractive index of the light receiver 2 is gradually changed.

[0032] Further, the inside of the fiber joint 1 is not coated.

[0033] Further, the optical fiber jumper comprises the fiber joint 1 and an optical fiber.

[0034] A new structure of fiber jumper includes fiber joint 1, light receiver 2, fixed cap 3, fiber core 41, fiber coating 42 and adhesive 5. By inserting the light receiver into the fiber joint, the stray laser light that does not enter the fiber can be evenly dissipated in the fiber joint, avoiding the damage caused by the concentration of the stray laser light at a certain point. There is no adhesive in the interior of the fiber joint, and all the adhesive is coated on the exterior and bonded with the fiber coating. The adhesive is prevented from being damaged by the excessive temperature rise caused by the absorption of stray laser light.

[0035] First, a circular hole is enlarged in the interior of the fiber joint 1, and the diameter of the circular hole matches the diameter of the light receiver 2. The light receiver 2 is placed in the circular hole, and the fixed cap 3 is fixed from the end. The fixed mode can be screwing, mechanical clamping or the like, but the fixed glue cannot be introduced. The fiber is stripped of the coating, the length of the fiber core 41 is slightly larger than the length of the fiber joint 1, the fiber core 41 is inserted into the combination of the fiber joint 1 and the light receiver 2, and the adhesive 5 is applied to the exterior of the fiber joint 1 to bond with the fiber coating 42.

[0036] Example 1: 20 fiber jumpers made by the method are coupled with 532 nm 150 W laser light, each for 1 hour, the average temperature rise of the joints of the 20 fibers is 5°C, and no damage to the fiber joint occurs. As a comparison, the average temperature rise of 20 fiber jumpers with a traditional structure is 19°C.

[0037] Example 2: 10 fiber jumpers made by the method are coupled with 1940 nm 60 W laser light, each for 1 hour, the average temperature rise of the joints of the 10 fibers is 3°C, and no damage to the fiber joint occurs. As a comparison, the average temperature rise of 10 fiber jumpers with a traditional structure is 17°C.

[0038] A new fiber jumper structure includes a hole punched on the end face of the fiber joint 1, the size of the hole is just enough to put the light receiver 2, the light receiver 2 is put into the fiber joint 1, there is no connection between the light receiver 2 and the fiber joint 1, the fixed cap 3 is connected with the fiber joint 1, the connection mode is compression or screw tightening, the fiber core 41 stripped of the fiber coating 42 is inserted into the fiber joint 1 and the light receiver 2, there is no connection between the fiber core 41 and the fiber joint 1 and the light receiver 2, the adhesive 5 is coated between the fiber joint 1 and the fiber coating 42, and the fiber joint 1 and the fiber coating 42 are bonded.

[0039] Working principle: when the laser enters the optical fiber, a small amount of energy fails to enter the optical fiber or fails to be transmitted after entering the optical fiber and immediately leaks out of the optical fiber into the light receiver 2. The material of the light receiver 2 is quartz or some kind of glass, which is basically transparent and does not absorb the laser wavelength. Since the focused spot is located on the end face of the fiber core 41 when the laser enters, the laser beam begins to be divergent from the end face of the optical fiber to the inside of the optical fiber. The light receiver 2 has two effects: it does not heat up after being irradiated by the laser and it expands the divergent state. After the laser irradiates the optical fiber joint 1, the power density is smaller and the local temperature extreme value is smaller.

[0040] Advantages:

[0041] 1. In the optical fiber joint 1, a too high local temperature extreme value will cause damage to the optical fiber joint 1 itself, such as deformation, spatter, fragmentation, etc. Reducing the local temperature extreme value improves the service life and reliability of the optical fiber jumper.

[0042] 2. The adhesive 5 may be directly irradiated by the laser and may be on fire. The adhesive 5 is applied to the outside of the optical fiber jumper 1 from the inside, reducing the risk of fire caused by direct irradiation of the adhesive by the laser. Moreover, the adhesive 5 is made of a material that has a small absorption of the laser wavelength, which also reduces the risk of fire.

[0043] Innovative points:

[0044] 1. The light receiver 2 is introduced into the optical fiber joint 1.

[0045] 2. The light receiver 2 is made of a material with a gradually changing refractive index, which makes the passing laser beam more divergent.

[0046] 3. The adhesive 5 is applied to the outside of the optical fiber jumper 1.

[0047] 4. The material of the adhesive 5 has a small absorption of the laser wavelength.

[0048] It should be noted that although several units / modules or sub-units / modules of the device are mentioned in the foregoing detailed description, such division is merely exemplary and not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into several units / modules for embodiment.

[0049] Although the spirit and principles of the present application have been described with reference to several specific embodiments, it should be understood that the present application is not limited to the disclosed specific embodiments, and the division of aspects does not mean that the features in these aspects cannot be combined for benefit, but only for the convenience of expression. The present application is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the appended claims.

Claims

1. A fiber optic jumper cable, comprising: The optical fiber jumper includes a fiber joint (1), a light receiver (2), a fixing cap (3), a fiber core (41), a fiber coating layer (42) and an adhesive (5), the light receiver (2) is arranged in the fiber joint (1), the fixing cap (3) is connected with the fiber joint (1), the fiber core (41) penetrates into the fiber joint (1) and the light receiver (2), and the adhesive (5) is coated between the fiber joint (1) and the fiber coating layer (42); The light receiver (2) does not generate heat after being irradiated by laser; the focused light spot is located on the end face of the fiber core (41) when laser is incident, the laser beam is in a divergent state from the end face to the inside of the optical fiber, and the light receiver (2) is used for expanding the divergent state, so that the power density is smaller after laser irradiation on the fiber joint (1), and the local temperature extreme value is smaller; The adhesive (5) is coated on the outside of the fiber joint (1), and the inside of the fiber joint (1) is not coated; The adhesive (5) has an absorption of less than 1% to the wavelength of laser; The material of the light receiver (2) includes glass or crystal which is highly transparent to the wavelength of laser; The refractive index of the light receiver (2) is gradually changed.

2. The fiber optic jumper of claim 1, wherein, The end face of the fiber joint (1) is provided with a circular hole, the light receiver (2) is arranged in the circular hole of the fiber joint (1), the light receiver (2) is not connected with the fiber joint (1), and the fiber core (41) is not connected between the fiber joint (1) and the light receiver (2).

3. The fiber optic jumper of claim 1, wherein, The fixing cap (3) is connected with the fiber joint (1) in a pressing or screwing manner.

4. The fiber optic jumper of claim 1, wherein, The fiber joint (1) and the fiber coating layer (42) are bonded.

5. The fiber optic jumper of claim 1, wherein, The optical fiber jumper includes the fiber joint (1) and an optical fiber.

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