CN215449686U

CN215449686U - High-speed optical fiber coupling device of laser diode

Info

Publication number: CN215449686U
Application number: CN202121961860.3U
Authority: CN
Inventors: 黄海; 张岩; 崔瑞民; 佘友连
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-07
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a high-speed optical fiber coupling device for a laser diode, which comprises a coupler body, a mounting groove, an optical path focusing space, a standard connector and a first limiting groove which are sequentially distributed from left to right in the coupler body and are communicated with each other, an optical focusing lens is arranged in the mounting groove, one end of a ferrule is fixedly connected with a connector, the ferrule and the connector are respectively and slidably connected with the standard connector and the interior of the first limiting groove, a positioning groove is arranged at the top end of the right side of the coupler body, a fixing block is slidably connected with the interior of the positioning groove, the top end of the fixing block is fixedly connected with a sliding column externally sleeved with a first spring, a second limiting groove is arranged at the top end of the connector, a second spring is fixedly connected in the second limiting groove, and a positioning column is fixedly connected at the top end of the second spring. The utility model aims to provide a laser diode high-speed optical fiber coupling device which is simple in structure, not easy to displace a core insert and convenient to disassemble and assemble.

Description

High-speed optical fiber coupling device of laser diode

Technical Field

The utility model relates to the field of optical fiber equipment, in particular to a high-speed optical fiber coupling device for a laser diode.

Background

The optical fiber coupler, also called splitter, connector, adapter, optical fiber flange, is an element for realizing optical signal splitting/combining or for extending optical fiber link, belongs to the field of optical passive element, and can be applied to telecommunication network, cable television network, user loop system and local area network.

Chinese utility model patent document No. CN 205941978U discloses an optical fiber coupler, in which a fixed gap for placing an optical focusing lens is provided inside the optical fiber coupler, so that the optical focusing lens can be conveniently placed at the front end of the optical fiber coupler for focusing optical signals; a light path focusing space is reserved behind the optical focusing lens to ensure that optical signals can be directly and completely gathered in the optical fibers in the ferrule; and a standard connecting port is further arranged at the rear end of the optical fiber coupler.

The optical fiber coupler disclosed by the patent has a simple structure, simplifies the system structure, but still has the defects that the installation of the connector is unstable, so that the insertion core is displaced, and the focus of an optical signal cannot accurately fall on the end face of the insertion core after focusing, so that the coupling between the optical signal and the optical fiber cannot be realized.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, the utility model provides the laser diode high-speed optical fiber coupling device which is simple in structure, not easy to displace a core insert and convenient to disassemble and assemble.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a high-speed fiber coupling device of laser diode, includes the coupler body, mounting groove, light path focus space, standard connector and first spacing groove distribute in proper order and link up each other from a left side to the right side in the inside of coupler body, the inside of mounting groove is provided with the optical focusing lens, lock pin one end fixedly connected with connector, lock pin, connector sliding connection respectively are in the inside of standard connector, first spacing groove, the right side top of coupler body is provided with the constant head tank, the inside sliding connection of constant head tank has the fixed block, the slip post of first spring is established to the outside cover of top fixedly connected with of fixed block, the top of connector is provided with the second spacing groove, spacing inslot fixedly connected with second spring of second, the top fixedly connected with reference column of second spring.

Further, the inside lower extreme of first spacing groove is provided with the spout, the lower extreme fixedly connected with slider of connector, slider sliding connection is in the spout.

Further, the top fixed connection stopper of second spring, stopper sliding connection is at second spacing inslot and top fixedly connected with reference column, the top sliding connection of reference column just outwards extends to the constant head tank inside in the top through-hole of connector.

Further, the top end of the sliding column penetrates through the top end of the coupler body and extends to the outside of the coupler body, and two ends of the first spring are fixed to the top of the sliding column and the top end of the coupler body respectively.

Further, the lengths of the standard connecting port and the inserting core are equal.

The high-speed optical fiber coupling device of the laser diode has the following beneficial effects:

the optical fiber coupling device is simple in overall structure, the ferrule is inserted into the standard connecting port and is in sliding connection with the standard connecting port, the through hole at the top end of the connector is aligned and communicated with the positioning groove, the positioning column automatically enters the positioning groove under the reset action of the second spring to stably connect the connector with the coupler body, and meanwhile, the sliding block at the bottom of the connector slides into the sliding groove, so that the connector is positioned, the positioning of the ferrule is realized, the ferrule is prevented from shifting in the standard connecting port, the focus can accurately fall on the end face of the ferrule after the optical signal is focused, and the coupling between the optical signal and the optical fiber is realized. In addition, when the ferrule needs to be moved out of the standard connecting port, the positioning column can be moved out of the positioning groove by pressing the sliding column downwards, then the connector is pulled to move the positioning column out of the first limiting groove, and the ferrule is moved out of the standard connecting port along with the positioning column.

Drawings

FIG. 1 is a partial sectional view of a laser diode high-speed fiber coupling device in a front view (an optical focusing lens, a connector, and a ferrule are all separated from a coupler body);

FIG. 2 is a partial sectional view of the laser diode high-speed fiber coupling device in a front view (the optical focusing lens, the connector and the ferrule are all installed in the coupler body);

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Description of reference numerals:

1. a coupler body; 2. a positioning column; 3. an optical path focusing space; 4. mounting grooves; 5. an optical focusing lens; 6. a standard connector; 7. a first limit groove; 8. a chute; 9. inserting a core; 10. a connector; 11. a slider; 12. positioning a groove; 13. a sliding post; 14. a fixed block; 15. a first spring; 16. a second limit groove; 17. a second spring; 18. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the high-speed fiber coupling device for a laser diode according to the present invention includes a coupler body 1, wherein a mounting groove 4 is disposed on a left side of the coupler body 1, a light path focusing space 3 is disposed on a right side of the mounting groove 4, a standard connection port 6 is disposed inside the coupler body 1, and a first limit groove 7 is disposed on a right side of the coupler body 1. An optical focusing lens 5 is arranged in the mounting groove 4, and the length of the optical path focusing space 3 is at least twice the focal length of the optical focusing lens 5, so that the focal point of an optical signal focused by the optical focusing lens 5 is ensured to fall on the end face of the ferrule 9 in the standard connecting port 6, and the coupling between the optical signal and the optical fiber is realized.

The inside sliding connection of standard connector 6 has lock pin 9, and standard connector 6 and lock pin 9 mutual adaptation, the inside lower extreme of first spacing groove 7 are provided with spout 8, the lower extreme fixedly connected with of connector 10 and the slider 11 of spout 8 adaptation, and slider 11 sliding connection is in spout 8, from this with connector 10 sliding connection in the inside of first spacing groove 7. The right end of the ferrule 9 is fixedly connected with the connector 10, the length of the standard connecting port 6 is equal to that of the ferrule 9, and the connector 10 is matched with the first limiting groove 7.

The right side top of coupler body 1 is provided with constant head tank 12, the inside sliding connection of constant head tank 12 has fixed block 14, the top fixedly connected with slip post 13 of fixed block 14, the outside cover of slip post 13 is equipped with first spring 15, the top of connector 10 is provided with second spacing groove 16, fixedly connected with second spring 17 in the second spacing groove 16, the bottom mounting of second spring 17 is in second spacing groove 16 bottom, top fixedly connected with stopper 18, the top fixedly connected with reference column 2 of stopper 18. The limiting block 18 is connected in the second limiting groove 16 in a sliding mode, the limiting block 18 limits the positioning column 2, and the positioning column 2 is prevented from sliding out of the second limiting groove 16. The top end of the sliding column 13 penetrates the top end of the coupler body 1 and extends to the outside of the coupler body 1. The top end of the first spring 15 is fixedly connected with the lower end face of the top of the sliding column 13, and the lower end of the first spring is fixedly connected with the top end of the coupler body 1, so that the elastic reset effect is achieved. The top end of the positioning post 2 is slidably connected in the top end through hole of the connector 10 and can extend to the outside of the connector 10 to the inside of the positioning groove 12.

The mounting groove 4, the optical path focusing space 3, the standard connecting port 6 and the first limit groove 7 are sequentially distributed from left to right in the coupler body 1, coaxially arranged and communicated with each other, so that the focus of an optical signal focused by the optical focusing lens 5 can accurately reach the left end face of the ferrule 9.

The working principle of the high-speed optical fiber coupling device of the laser diode is as follows:

the positioning column 2 is pressed by hand to be immersed into the through hole at the top end of the connector 10, the ferrule 9 is inserted into the standard connector 6 through the first limiting groove 7 leftwards, the connector 10 moves along with the ferrule 9 and enters the first limiting groove 7, the connector 10 moves leftwards until the through hole at the top end is communicated with the positioning groove 12, the positioning column 2 moves upwards under the action of the reset elastic force of the second spring 17 and automatically enters the positioning groove 12, the sliding block 11 slides into the sliding groove 8, so that the connector 10 is stably connected with the coupler body 1, the ferrule 9 is installed, the ferrule 9 is prevented from moving in the standard connector 6, the focus can accurately fall on the end face of the ferrule 9 after optical signals are focused, and the coupling between the optical signals and optical fibers is realized. When the ferrule 9 needs to be removed from the standard connector 6, the sliding column 13 is pressed downwards by hand, the sliding column 13 drives the fixing block 14 at the lower end to press the positioning column 2 downwards in the downward moving process, so that the positioning column 2 is removed from the positioning groove 12, and at the moment, the connector 10 is pulled by hand to be removed from the first limiting groove 7, so that the ferrule 9 is driven to be removed from the standard connector 6, and thus, the disassembly and maintenance of the high-speed fiber coupling device of the laser diode are greatly facilitated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A high-speed optical fiber coupling device of laser diode, including coupler body (1), its characterized in that: the optical path focusing device comprises a mounting groove (4), an optical path focusing space (3), a standard connector (6) and a first limiting groove (7), wherein the mounting groove (4), the optical path focusing space (3), the standard connector (6) and the first limiting groove (7) are sequentially distributed from left to right and are mutually communicated, an optical focusing lens (5) is arranged in the mounting groove (4), one end of a ferrule (9) is fixedly connected with a connector (10), the ferrule (9) and the connector (10) are respectively and slidably connected in the standard connector (6) and the first limiting groove (7), a positioning groove (12) is arranged at the top end of the right side of the coupler body (1), a fixing block (14) is slidably connected in the positioning groove (12), a sliding column (13) externally sleeved with a first spring (15) is fixedly connected at the top end of the fixing block (14), a second limiting groove (16) is arranged at the top end of the connector (10), and a second spring (17) is fixedly connected in the second limiting groove (16), the top end of the second spring (17) is fixedly connected with a positioning column (2).

2. A laser diode high speed fiber coupling device according to claim 1, wherein: the inside lower extreme of first spacing groove (7) is provided with spout (8), the lower extreme fixedly connected with slider (11) of connector (10), slider (11) sliding connection is in spout (8).

3. A laser diode high speed fiber coupling device according to claim 2, wherein: the top end of the second spring (17) is fixedly connected with a limiting block (18), the limiting block (18) is connected in the second limiting groove (16) in a sliding mode, and the top end of the limiting block (18) is fixedly connected with a positioning column (2).

4. A laser diode high speed fiber coupling device according to claim 3, wherein: the top end of the sliding column (13) penetrates through the top end of the coupler body (1) and extends to the outside of the coupler body (1).

5. A laser diode high-speed optical fiber coupling device according to claim 3 or 4, wherein: and two ends of the first spring (15) are respectively fixed at the top of the sliding column (13) and the top end of the coupler body (1).

6. A laser diode high-speed optical fiber coupling device according to claim 5, wherein: the top end of the positioning column (2) is connected in a top end through hole of the connector (10) in a sliding mode and extends outwards to the inside of the positioning groove (12).

7. A laser diode high-speed optical fiber coupling device according to any one of claims 1-6, wherein: the standard connecting port (6) and the inserting core (9) are equal in length.