CN102023338A - Optical fiber assembly - Google Patents

Abstract

The invention relates to an optical fiber assembly which comprises an optical fiber and an optical fiber coupling connector, wherein the optical fiber coupling connector comprises a body, and the body has a first end part and a second end part which are opposite to each other; the body further comprises an optical lens arranged at the first end part and an accommodating hole which is arranged in the body, an opening of the accommodating hole is arranged at the second end part, and the accommodating hole extends to the first end part from the second end part towards the optical lens; and the optical fiber is accommodated in the accommodating hole, and the light-emitting end of the optical fiber is arranged towards the optical lens and is connected with the body in the accommodating hole through glue. The refractive index of the glue is similar to or the same as that of the body.

Description

Fiber optic components

technical field

The present invention relates to an optical fiber assembly.

Background technique

Personal computers (Personal Computer, PC), consumer electronics, and mobile products that are widely used at present usually use electrical signals for data transmission. This method of data transmission has the following problems: first, the transmission speed is slow, so it takes more time for transmission; second, the transmission is unstable, and the electrical signal is easily interfered by external signals such as electromagnetic waves during the transmission process. Sometimes it even causes partial data loss.

Optical fiber transmission is a method of transmission using optical signals. It has outstanding advantages such as fast transmission speed, wide frequency bandwidth, low loss, strong anti-interference ability, high fidelity and reliable working performance. With the continuous decline in the cost of optical fiber , Optical fiber has been more and more widely used in the field of communication.

However, when the optical signal is transmitted between media with different refractive index, the phenomenon of energy loss of the optical signal will occur, especially when the optical signal passes through more media with different refractive index between the output and input or the refractive index of different media is different When larger, the resulting energy loss will be greater. As a result, data transmission will be affected.

Contents of the invention

In view of this, it is necessary to provide an optical fiber component that is easy to implement and can effectively improve the problems existing in the existing signal transmission process.

An optical fiber component includes an optical fiber and an optical fiber coupling connector. The fiber coupling connector includes a body, the body has an opposite first end and a second end; the body further includes an optical lens disposed on the first end and an opening set in the body a receiving hole provided at the second end, the receiving hole extends from the second end to the first end and faces the optical lens; the optical fiber is stored in the receiving hole, and the The light emitting end of the optical fiber faces the optical lens; the light emitting end of the optical fiber is connected to the body in the receiving hole through glue; the refractive index of the glue is similar to or the same as that of the body.

Compared with the existing technical solutions, the optical fiber component of the present invention utilizes the advantages of high optical fiber transmission speed and strong anti-interference ability, which can save data transmission time and reduce the possibility of data loss. In addition, the optical fiber coupling connector in the optical fiber component of the present invention connects the optical fiber and the main body with glue whose refractive index is close to or the same as that of the main body, which can reduce the optical signal caused by the large difference in refractive index between different media during optical signal transmission. The phenomenon of energy loss, thus ensuring the transmission of data.

Description of drawings

FIG. 1 is a schematic perspective view of an optical fiber assembly according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the optical fiber assembly shown in Fig. 1 along the direction II-II.

Fig. 3 is a cross-sectional view of the optical fiber assembly shown in Fig. 1 along the direction III-III.

Fig. 4 is a schematic diagram of two optical fiber assemblies shown in Fig. 1 as an input assembly and an output assembly respectively.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 , a preferred embodiment of the present invention provides a fiber coupling connector 20 for coupling an optical fiber 24 , which includes a body 22 .

Please refer to FIG. 2 and FIG. 3 together, the body 22 has a first end portion 221 and a second end portion 222 opposite to the first end portion 221 . The first end portion 221 is provided with an optical lens 226, and the second end portion 222 is provided with a receiving hole 228, and the receiving hole 228 extends from the second end portion 222 to the first end portion 221 and faces The optical lens 226 .

The light emitting end of the optical fiber 24 is inserted into the receiving hole 228 so that the optical fiber 24 is received in the receiving hole 228 , and the light emitting end of the optical fiber 24 faces the optical lens 226 . The light emitting end of the optical fiber 24 is connected to the main body 22 in the receiving hole 228 through the glue 26 . The refractive index of the glue 26 is similar to or the same as that of the body 22 , thereby reducing the difference in refractive index between the glue 26 and the body 22 .

Preferably, the refractive index of the glue 26 is the same as that of the body 22 . Therefore, when the optical signal transmitted by the optical fiber 24 is transmitted between two media with different refractive indices, the energy loss of the optical signal due to refraction can be avoided, especially when the refractive index difference between the media is large. Of course, it can be understood that when the refractive index of the glue 26 is close to that of the body 22 ie the difference is small, the energy loss of the optical signal due to the refraction can be reduced due to the small refraction. In this embodiment, the refractive index n of the body 22 and the refractive index of the glue range from 0.9n to 1.1n.

In this embodiment, the structure of the light output end of the optical fiber 24 is described by taking three stepped layers as an example. The innermost layer is a core with a cladding layer, the middle layer is a coating layer, and the outermost layer is a sheath.

Preferably, the accommodating hole 228 has a stepped structure, matching with the structure of the light emitting end of the optical fiber 24, and at the same time facilitates the overall molding of the body 22, especially facilitates the drafting of the mold core.

The material of the optical lens 226 is the same as that of the body 22 . The focal point of the optical lens 226 is located on the extension line of the receiving hole 228 , and the focal point of the optical lens 226 is located between the light emitting end of the optical fiber 24 and the optical lens 226 .

In this embodiment, the body 22 and the optical lens 226 are integrally formed. Of course, the body 22 can also be a separate structure, and the optical lens 226 and the body 22 can also be combined.

Preferably, the optical lens 226 is a convex lens whose convex surface faces the outer space of the body 22 . The optical lens 226 is used for collimating or converging optical signals. When the fiber coupling connector 20 is used as an output end, the optical lens 226 collimates the optical signal transmitted by the optical fiber 24 ; when the optical fiber coupling connector 20 is used as an input end, the optical lens 226 converges the input optical signal to the optical fiber 24 .

Further, the body 22 is provided with a glue-holding hole 225 , and the glue-holding hole 225 communicates with the receiving hole 228 . The glue 26 is injected from the glue holding hole 225 and flows to the bottom of the holding hole 228 . In this embodiment, the glue-holding holes 225 are respectively arranged on both sides of the body 22 , of course, the glue-holding holes 225 can also be arranged on the upper and lower surfaces of the body 22 .

In this embodiment, the receiving hole 228 is a blind hole with a stepped structure. Of course, the receiving hole 228 may also be a cylindrical structure, or may be a through hole. When the receiving hole 228 is set as a through hole, the light emitting end of the optical fiber 24 directly abuts against the optical lens 226 , at this time, the light emitting end of the optical fiber 24 and the optical lens 226 can be directly connected through the glue 26 .

Preferably, the number of optical fibers 24 is the same as the number of receiving holes 228 and the number of optical lenses 226 , and they are in a one-to-one correspondence, that is, one optical fiber 24 is correspondingly inserted into one receiving hole 228 and directed to one optical lens 226 . In this embodiment, there are two optical fibers 24 , two receiving holes 228 , and two optical lenses 226 .

When assembling and connecting the optical fiber 24 and the main body 22, the light emitting end of the optical fiber 24 is inserted into the main body 22 from the receiving hole 228, and contacts the bottom of the receiving hole 228 as far as possible; The holes 228 communicate with each other. Therefore, under a certain injection pressure, the glue 26 flows to the bottom of the receiving hole 228 , so that the light emitting end of the optical fiber 24 is connected with the body 22 .

In this embodiment, the glue-holding hole 225 is a through hole, which runs through both sides of the body 22 . Of course, the glue-holding hole 225 can also be a blind hole, one is opened on both sides or the upper and lower surfaces of the body 22 , and is respectively connected with an adjacent receiving hole 228 .

It can be understood that when the glue-holding hole 225 is a through hole, when the glue 26 is injected from the glue-holding hole 225 on one side of the body 22, the glue 26 flowing to the other end can further discharge the air in the glue-holding hole 225, so that Get better connections.

Preferably, the glue 26 is injected from the glue hole 225 by dispensing.

It can be understood that when there is no glue hole 225 , the glue 26 can be directly injected into the hole 228 to connect the optical fiber 24 and the body 22 in the hole 228 .

Please refer to FIG. 4 , the input and output ends are composed of a pair of optical fiber coupling connectors 20 and 30 respectively corresponding to the signal output and input, which are symmetrical. There are 6 interfaces in the input and output process, which are respectively from the optical fiber 24 to the glue 26. Interface 1', interface 2' from glue 26 to optical lens 226, interface 3' from optical lens 226 to air, interface 4' from air to optical lens 226, interface 5' from optical lens 226 to glue 26, and interface 5' from glue 26 to optical fiber 24 interface 6'. Wherein, the material of the optical lens 226 is the same as the material of the body 22 and the refractive index of the glue 26 . Therefore, the process of the optical signal passing through the glue 26 from the optical fiber 24 to the optical lens 226 , or the process of the optical signal passing through the glue 26 from the optical lens 226 to the optical fiber 24 , the medium the optical signal passes through has the same refractive index. Thus, the energy loss caused by the refraction of the optical signal can be avoided. Certainly, when the refractive index of the glue 26 is close to that of the body 22 , the energy loss can be reduced due to the small refraction of the optical signal.

Compared with the existing technical solutions, the optical fiber component of the present invention utilizes the advantages of high optical fiber transmission speed and strong anti-interference ability, which can save data transmission time and reduce the possibility of data loss. In addition, the optical fiber coupling connector in the optical fiber component of the present invention connects the optical fiber and the main body with glue whose refractive index is close to or the same as that of the main body, which can reduce the optical signal caused by the large difference in refractive index between different media during optical signal transmission. The phenomenon of energy loss, thus ensuring the transmission of data.

In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims (9)

1. optical fiber component comprises: optical fiber and optical fiber coupled connector, and described optical fiber coupled connector comprises body, described body has relative first end and the second end; It is characterized in that: described body further comprises the optical lens that is arranged on described first end and is opened in the described body and opening is located at the accepting hole of place the second end, and described accepting hole extends and towards described optical lens to described first end from described the second end; Described optical fiber is contained in described accepting hole, and the light exit side of described optical fiber is towards described optical lens; The light exit side of described optical fiber is connected with described body in described accepting hole by glue; The refractive index of described glue is close with the refractive index of described body or identical.

2. optical fiber component as claimed in claim 1 is characterized in that, the refractive index of described body is n, and the ranges of indices of refraction of described glue is 0.9n～1.1n.

3. optical fiber component as claimed in claim 1 is characterized in that, described optical lens is convex lens, and its convex surface is towards the space outerpace of described body.

4. optical fiber component as claimed in claim 1 is characterized in that the focus of described optical lens is positioned on the extension line of described accepting hole.

5. optical fiber component as claimed in claim 1 is characterized in that, the material of described optical lens is identical with the material of described body.

6. optical fiber component as claimed in claim 1 is characterized in that, the quantity of described optical lens is identical with the quantity of the quantity of described accepting hole and described optical fiber, and described optical fiber is corresponding one by one with described accepting hole and described optical lens.

7. optical fiber component as claimed in claim 1 is characterized in that, described body is provided with the appearance glue hole that connects with described accepting hole.

8. optical fiber component as claimed in claim 7 is characterized in that, described glue injects from described appearance glue hole.

9. optical fiber component as claimed in claim 7 is characterized in that, described appearance glue hole is through hole or blind hole.

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