CN102169212A - Quick pre-buried optical fiber connection device - Google Patents

Abstract

The invention relates to a pre-embedded optical fiber quick connection device, which comprises a wheel handle (1), a pre-embedded optical fiber (2), a nominal aperture ferrule (5) and a sleeve (6). There is an opening (3) on the ferrule (5), one end of which is provided with a conical guide port (4); one end of the pre-embedded optical fiber (2) is at the opening (3) of the ferrule (5), It is used for docking with the optical fiber to be connected, and the other end is on the end face of the ferrule (5) for polishing and grinding; there is a space in the inner hole of the sleeve (6) to keep the optical fiber to be connected in a slightly bent state, and has a locking function at the same time The function of the optical fiber to be connected. The matching liquid (8) is prepared at the opening (3). When in use, the optical fiber (7) to be connected enters the ferrule (5) through the sleeve (6) and is joined with the pre-embedded optical fiber (2) at the opening (3) of the ferrule (5). The connection device has the advantages of simple structure, low cost, simple and fast operation, ensures the butt joint accuracy of the optical fibers to be connected, effectively reduces the insertion loss of the connector, and improves the return loss.

Description

A pre-embedded optical fiber quick connection device

technical field

The invention relates to a pre-embedded optical fiber quick connection device, which can simply and quickly realize the alignment and connection of optical fibers at the scene where optical fiber active links are required, and belongs to the technical field of optical fiber communication device manufacturing.

Background technique

In the optical access network, active connectors need to be used extensively. Therefore, a fast and effective optical fiber connection device is needed to realize the connection of optical fibers. The non-embedded optical fiber connection device is inconvenient to operate and has poor flexibility in use. Most of the existing pre-embedded optical fiber connection devices require an additional alignment device with a complex structure, which increases the cost. Therefore, there is a need for an optical fiber quick connection device with simple structure, low cost, simple and fast operation, and suitable for various optical fiber flexible connection sites.

Contents of the invention

Technical problem: The object of the present invention is to provide an optical fiber alignment and connection device suitable for optical fiber connection engineering sites, with low device cost, simple and fast operation, and low insertion loss.

Technical solution: The pre-embedded optical fiber quick connection device of the present invention includes a wheel handle, a pre-embedded optical fiber, a nominal aperture ferrule and a sleeve; the pre-embedded optical fiber is located in the nominal aperture ferrule, and one end of the nominal aperture ferrule passes through the The wheel handle is located in the bushing; the bushing is connected to the wheel handle, and there is an opening in the middle of the ferrule with a nominal aperture to the inner hole, and the optical fiber to be connected is connected to the pre-embedded optical fiber through the bushing in the opening.

In the opening, a matching liquid is filled at the joint between the pre-embedded optical fiber and the optical fiber to be connected.

A conical guide port is provided in the sleeve for guiding the optical fiber to be connected into the nominal aperture ferrule; the optical fiber to be connected is slightly bent in the tube to lock and protect the optical fiber to be connected.

Beneficial effects: Compared with the prior art, the present invention has the remarkable advantages that: the ferrule with a nominal aperture reduces the requirements for machining accuracy of parts, and the manufacturing cost is low; The operation can be observed and completed through the opening, which improves the accuracy of the operation; the opening is convenient for matching liquid injection and exhaust when the optical fiber to be connected is inserted. Therefore, the present invention has the advantages of simple structure, low cost and easy and fast operation. It is suitable for various optical fiber active connection sites, improves the matching degree of the optical fiber to be connected, effectively reduces the insertion loss of the connector, and improves the return loss.

Description of drawings

Figure 1 is a schematic diagram of a pre-embedded optical fiber fast connection.

Detailed ways

The pre-embedded optical fiber quick connection device of the present invention comprises a wheel handle and pre-embedded optical fiber. The wheel shank is mainly a ferrule with a nominal aperture. There is an opening on the ferrule, and a conical guide port is provided at one end to facilitate the insertion of the optical fiber to be connected. When it is practical, there is a matching liquid at the opening; the joint point between the optical fiber to be connected and the pre-embedded optical fiber is located at the opening of the wheel handle; the sleeve keeps the optical fiber in the tube slightly bent when locking the optical fiber to be connected, so as to ensure that the pre-embedded optical fiber and the pre-embedded optical fiber The fiber end faces remain in contact.

The device includes a wheel handle 1, pre-embedded optical fiber 2, nominal aperture ferrule 5 and sleeve 6. There is an opening 3 on the ferrule 5, which is convenient for the matching liquid 8 to be prepared. One end is provided with a conical guide port 4; the pre-embedded optical fiber 2 is prepared in the ferrule 5, and one end of the pre-embedded optical fiber 2 is placed at the opening 3 of the ferrule 5 for docking with the optical fiber 7 to be connected. The other end is placed at the outer end face of the ferrule 5, and the end face is polished and ready for use; the inner diameter of the sleeve 6 is slightly larger than the diameter of the optical fiber 7 to be connected, leaving space to ensure that the optical fiber 7 to be connected is slightly bent in the sleeve 6 state, one end of the sleeve 6 locks the optical fiber 7 to be connected by means of an external fastening component.

One end of the optical fiber 7 to be connected is guided to the opening 3 of the ferrule 5 through the ferrule 6 through the tapered guide port 4 of the ferrule 5 , and the operator can observe the fiber docking process through the opening 3 of the ferrule 5 and the ferrule 6 . In addition, the opening 3 can also be used for exhaust when the optical fiber is inserted; the accuracy of the inner diameter of the ferrule 5 ensures the precise alignment of the embedded optical fiber 2 and the optical fiber 7 to be connected, and plays a role in positioning and alignment during the connection process. At the same time, it cooperates with matching liquid 8 to ensure low connection loss and high reflection loss of optical fiber docking; the sleeve 6 is used to guide the optical fiber 7 to be connected, ensure the micro-bend of the optical fiber 7 to be connected and fasten and protect the optical fiber 7 to be connected; standard ferrule 5 is used It is convenient for optical fiber to connect, and the flexibility of optical fiber connection is improved.

Take the connection of ordinary single-mode optical fiber as an example: the ferrule 5 used in this device is a ferrule product with a standard aperture. One end has a structure with a conical guide port 4 and an opening 3. A section of single-mode optical fiber is pre-placed in the ferrule 5 as a pre-embedded optical fiber 2. One end face of the optical fiber is located at the opening 3, and the other end is connected to the outer end face of the ferrule 5. This end face is ground for external connection as required. The matching liquid 8 is prepared in the ferrule 5 . Push the optical fiber 7 to be connected from the ferrule 6 through the guide port 4 of the ferrule 5 to the opening 3 by external force, and keep the pushing force so that the optical fiber 7 to be connected forms a slight bend in the ferrule 6 and passes through the lock at the same time. The tightening mechanism locks the optical fiber 7 to be connected, so as to ensure that the optical fiber 7 to be connected is in contact with the end face of the pre-embedded optical fiber 2 . Finally, a standard active connector plug is formed on the device plus a package such as a sheath.

Claims (3)

1. a built-in type optical fiber Quick Connect Kit is characterized in that this device comprises wheel shank (1), pre-buried optical fiber (2), normal pore size lock pin (5) and sleeve pipe (6); Pre-buried optical fiber (2) is arranged in normal pore size lock pin (5), and an end of normal pore size lock pin (5) passes wheel shank (1) and is arranged in sleeve pipe (6); Sleeve pipe (6) joins with wheel shank (1), and there is an opening (3) at normal pore size lock pin (5) middle part to endoporus, and optical fiber to be connected (7) joins in opening (3) by sleeve pipe (6) and pre-buried optical fiber (2).

2. built-in type optical fiber Quick Connect Kit according to claim 1 is characterized in that in described opening (3), is filled with matching fluid (8) in the junction of pre-buried optical fiber (2) and optical fiber to be connected (7).

3. built-in type optical fiber Quick Connect Kit according to claim 1 is characterized in that being provided with conical targeting port (4) in described sleeve pipe (6), is used to guide optical fiber to be connected (7) to enter normal pore size lock pin (5); Make optical fiber to be connected (7) in pipe, be little curved state, lock and protect optical fiber to be connected (7).

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