CN103676023A - Optical fiber connector - Google Patents

Abstract

An optical fiber connector includes an optical fiber connector and a coupling piece connected with the optical fiber connector. The fiber optic connector is used to connect and optically align the optical fiber with the coupling. The coupling part is used for coupling the optical signal between the optical fiber and the photoelectric element. The optical fiber connector and the coupler are aligned with each other through the matching alignment plug and alignment jack. The alignment plug is formed on one of the fiber optic connector and the coupling piece, and the alignment jack is formed on the other of the fiber optic connector and the coupling piece. The alignment plug has a square shape. The side of the alignment plug forms a first reference plane, the shape and size of the alignment socket correspond to the alignment plug, and the inner side of the alignment socket forms a second reference surface that cooperates with the first reference surface.

Description

The optical fiber connector

technical field

The invention relates to a connector, in particular to an optical fiber connector.

Background technique

The optical fiber connector is used to connect the optical signal transmitting device and the optical fiber or between the optical fiber and the optical signal receiving device, so as to realize the coupling of the optical signal and the mutual conversion between the optical signal and the electrical signal. Existing optical fiber connectors generally include an optical fiber connector and a coupling piece connected to the optical fiber connector. The optical fiber connector is used to connect the optical fiber and optically align the optical fiber with the coupling member. Therefore, the connection accuracy between the optical fiber connector and the coupling element will directly affect the alignment accuracy between the optical fiber and the coupling element.

In the prior art, the optical fiber connector and the coupling piece are aligned with each other in the form of a cylindrical alignment column and an alignment hole, and the mutual matching surface of the alignment column and the alignment hole is a cone shape. The forming mold used for forming the above structure usually needs to be produced by electric discharge, which increases the difficulty of forming the optical fiber connector and the coupling piece.

Contents of the invention

In view of this, it is necessary to provide an optical fiber connector that can reduce manufacturing difficulty.

An optical fiber connector includes an optical fiber connector and a coupling piece connected with the optical fiber connector. The fiber optic connector connects the optical fiber and optically aligns the optical fiber with the coupling member. The coupling part is used for coupling the optical signal between the optical fiber and the photoelectric element. The optical fiber connector and the coupler are aligned with each other through the mating alignment plugs and alignment jacks. The alignment plug is formed on one of the fiber optic connector and the coupling piece, and the alignment jack is formed on the other of the fiber optic connector and the coupling piece. The alignment plug is square. The side of the alignment plug forms a first reference plane, the shape and size of the alignment jack correspond to the alignment plug, and the inner side of the alignment jack forms a second reference plane that cooperates with the first reference plane. Two reference planes.

Compared with the prior art, the optical fiber connector utilizes the structure of the alignment plug and the alignment jack for alignment, since the first reference plane and the second reference plane are surrounded by a square structure, so the alignment plug and the alignment jack can be processed by wire cutting or grinding, so it can reduce the difficulty of making the optical fiber connector and the coupling piece, and ensure that it is easier to control the alignment Bit plugs and the accuracy of the alignment jacks.

Description of drawings

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

FIG. 2 is an exploded view of the fiber optic connector of FIG. 1 .

FIG. 3 is another perspective view of the fiber optic connector of FIG. 2 .

FIG. 4 is yet another perspective view of the fiber optic connector of FIG. 2 .

Fig. 5 is a cross-sectional view along V-V of the optical fiber connector in Fig. 1 .

Description of main component symbols

The optical fiber connector 100 Fiber optic connector 10 bottom surface 11 top surface 12 first end face 13 second end face 14 first groove 101 first interface 15 fiber channel 151 second interface 16 Fixing hole 161 alignment plug 17 base 171 first datum 1711 light exit surface 1712 Bump 172 first cutting part 1721 Coupler 20 third end face twenty one alignment jack 211 upper surface twenty two second groove 221 lower surface twenty three third groove 231 first optical interface twenty four second datum 25 first coupling lens 26 Turning surface 27 second coupling lens 28

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

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

1 to 5 are structural diagrams of an optical fiber connector 100 according to an embodiment of the present invention. The optical fiber connector 100 includes an optical fiber connector 10 and a coupling member 20 connected to the optical fiber connector 10 .

The optical fiber connector 10 is substantially square and includes a bottom surface 11 , a top surface 12 opposite to the bottom surface 11 , a first end surface 13 and a second end surface 14 opposite to the first end surface 13 . The bottom surface 11 is approximately parallel to the top surface 12, the first end surface 13 is approximately parallel to the second end surface 14, and the first end surface 13 and the second end surface 14 are respectively connected to the bottom surface 11 and the second end surface 14. The top surfaces 12 are connected substantially vertically.

The optical fiber connector 10 defines a first groove 101 . The first groove 101 runs through the top surface 12 and the first end surface 13, and forms a first interface 15 and a second interface 16 at the junction with the optical fiber joint. The first interface 15 is roughly Parallel to the bottom surface 11 , the second interface 16 is substantially parallel to the second end surface 14 . A plurality of optical fiber channels 151 are opened on the first interface 15, and each optical fiber channel 151 is used for setting a corresponding optical fiber (not shown in the figure). The second interface 16 defines a plurality of fixing holes 161 corresponding to the fiber channels 151 one by one, and the fixing holes 161 are used for fixing the ends of the optical fibers corresponding to the fiber channels 151 therein.

The optical fiber connector 10 includes a alignment plug 17 formed on the second end surface 14 , and the alignment plug 17 includes a base 171 and two protrusions 172 respectively located at opposite ends of the base 171 . The base 171 is square and protrudes a certain distance perpendicular to the direction of the second end surface 14 . The base 171 includes a first reference surface 1711 on the side and a light exit surface 1712 that is far away from the second end surface 14 and parallel to the second end surface 14, and the fixing hole 161 penetrates to the light exit surface. 1712. The protrusions 172 extend vertically away from the base 171 for a certain distance from opposite ends of the base 171 , each of the protrusions 172 is roughly in the shape of a quadrangular prism, and a first cutting portion 1721 is formed at the end of each protrusion 172 , The cutting portion forms a cutting surface surrounding three sides of the protrusion 172 , and the cutting surface gradually shrinks away from the second end surface 14 .

The coupling member 20 is substantially square and includes a third end surface 21 facing the optical fiber connector 10 , an upper surface 22 and a lower surface 23 opposite to the upper surface 22 . The upper surface 22 and the lower surface 23 are parallel to each other and perpendicular to the third end surface 21 .

An alignment socket 211 corresponding to the alignment plug 17 is defined on the third end surface 21 , and the shape and size of the alignment socket 211 correspond to the shape and size of the alignment plug 17 respectively. A first optical interface 24 at the bottom and a second reference surface 25 at the side are formed at the junction of the alignment socket 211 and the coupling member 20 . A plurality of first coupling lenses 26 are disposed on the first optical interface 24 , each of the first coupling lenses 26 corresponds to one of the fixing holes 161 , and is optically aligned with the optical fiber corresponding to the fixing holes 161 . In this embodiment, the first coupling lens 26 is a convex lens and integrally formed on the first optical interface 24 . A second cutting portion 241 corresponding to the first cutting portion 1721 is formed at the junction of the second reference surface 25 and the third end surface 21 .

A second groove 221 is defined on the upper surface 22 . A turning surface 27 is formed at the junction of the second groove 221 and the coupling member 20, and the turning surface 27 is used to deflect the optical signal by a predetermined angle. In this embodiment, the included angle between the deflection surface 27 and the optical axis of the first coupling lens 26 is 45 degrees, which is used to deflect the optical signal by 90 degrees.

A third groove 231 is opened on the lower surface 23, and a plurality of second coupling lenses 28 corresponding to the first coupling lens 26 are arranged at the bottom of the third groove 231, and each of the second coupling lenses The lens 28 is arranged on the optical path after the optical signal of the corresponding optical fiber is deflected by the deflection surface 27 . In this embodiment, the included angles between the optical axis of each second coupling lens 28 and the turning surface 27 are 90 degrees. The second coupling lens 28 is a convex lens and integrally formed with the bottom of the third groove 231 .

When connecting, the alignment plug 17 of the optical fiber connector 10 is inserted into the alignment insertion hole 211 of the coupling member 20, so that the first reference surface 1711 and the second reference surface 25 are attached to each other, and the first reference surface 1711 is attached to the second reference surface 25. A cutting portion 1721 and the second cutting portion 241 prevent damage to the first reference plane 1711 and the second reference plane 25 during connection.

In optical communication equipment, the coupling member 20 is generally arranged on a circuit board (not shown), and the circuit board is provided with a plurality of photoelectric elements (not shown) corresponding to the second coupling lens, the The second coupling lenses 28 are respectively optically aligned with the corresponding photoelectric elements. The photoelectric element includes an optical signal emitting element and an optical signal receiving element, the optical signal emitting element may be a laser diode (laser diode), and the optical signal receiving element may be a photodiode (photodiode).

In this embodiment, the alignment plug 17 is formed on the optical fiber connector 10 , and the alignment jack 211 is formed on the coupling member 20 . It can be understood that a similar alignment plug can also be formed on the coupling member 20, and a similar alignment insertion hole can be formed on the optical fiber connector 10. In this case, the fixing hole 161 runs through to the alignment insertion hole. The bottom surface, the first coupling lens 26 is disposed on the end surface of the alignment plug.

The optical fiber connector utilizes the structure of the alignment plug and the alignment jack for alignment. Since the first reference plane and the second reference plane both form a square structure, the alignment The alignment plug and the alignment jack can be processed by wire cutting or grinding, so the difficulty of making the optical fiber connector and the coupling can be reduced, and it is easier to control the alignment plug and the alignment hole. bit jack precision.

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 (10)

1. An optical fiber connector, comprising an optical fiber connector and a coupling part connected with the optical fiber connector, the optical fiber connector is used to connect the optical fiber and optically align the optical fiber with the coupling part, the coupling part It is used to couple the optical signal between the optical fiber and the photoelectric element. The optical fiber connector and the coupling member are aligned with each other through the matching alignment plug and the alignment jack. The alignment plug is formed on the optical fiber connector And on one of the coupling parts, the alignment jack is formed on the optical fiber connector and the other of the coupling parts, the improvement is: the alignment plug is square, and the alignment plug The side surface of the alignment socket forms a first reference plane, the shape and size of the alignment socket correspond to the alignment plug, and the inner side of the alignment socket forms a second reference surface that cooperates with the first reference surface. 2. The optical fiber connector according to claim 1, wherein the alignment plug comprises a base and two protrusions respectively located at opposite ends of the base, and the end of each protrusion forms a first cutting portion, The cutting portion forms a cutting surface on three sides of the protruding block, the cutting surface gradually shrinks from the direction away from the base, and the inner surface of the alignment insertion hole forms a cutting surface corresponding to the first cutting surface. Part of the second cutting part. 3. The optical fiber connector according to claim 1, wherein the optical fiber connector comprises a bottom surface, a top surface opposite to the bottom surface, a first end surface, and a top surface opposite to the first end surface. the second end surface, the bottom surface is parallel to the top surface, the first end surface is approximately parallel to the second end surface, and the first end surface and the second end surface are respectively connected to the bottom surface and the top surface connected vertically. 4. The optical fiber connector according to claim 3, characterized in that: the optical fiber connector is provided with a first groove, the first groove runs through the top surface and the first end surface, and The junction of the optical fiber connector forms a first interface parallel to the bottom surface and a second interface parallel to the second end surface. 5. The optical fiber connector according to claim 4, wherein a plurality of optical fiber channels are provided on the first interface, and each optical fiber channel is used to set a corresponding optical fiber, and the second interface is provided with a plurality of optical fiber channels. A plurality of fixing holes respectively corresponding to the optical fiber channels are opened, and the fixing holes are used for fixing the fiber ends corresponding to the optical fiber channels therein. 6. The optical fiber connector according to claim 5, wherein the optical fiber connector is formed on the second end face of the optical fiber connector, and the fixing hole penetrates to the surface of the optical fiber connector away from the second end face . 7. The optical fiber connector according to claim 1, wherein the coupling member comprises a third end surface facing the optical fiber connector, an upper surface and a lower surface opposite to the upper surface, the The upper surface and the lower surface are parallel to each other and vertically connected to the third end surface. 8. The optical fiber connector according to claim 7, characterized in that: the alignment insertion hole is opened on the third end surface, and the alignment insertion hole forms a junction with the coupling piece The first optical interface at the bottom is provided with a plurality of first coupling lenses, and each first coupling lens corresponds to an optical fiber. 9. The optical fiber connector according to claim 8, wherein a second groove is formed on the upper surface, and a turning surface is formed at the junction of the second groove and the coupling member, and the The deflection surface is used to deflect the optical signal by a predetermined angle. 10. The optical fiber connector according to claim 9, characterized in that: a third groove is opened on the lower surface, and a plurality of corresponding to the first coupling lens are arranged at the bottom of the third groove. The second coupling lens, each of the second coupling lenses is arranged on the optical path after the optical signal of the corresponding optical fiber is deflected by the deflection surface.

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