Pluggable optical fiber butt joint device and pluggable optical fiber frame

Abstract

The utility model relates to a pluggable optical fiber butting device, which comprises an output optical fiber and an input optical fiber, the output optical fiber and the input optical fiber are respectively arranged on an output light optical fiber seat and an input light optical fiber seat, the output light optical fiber seat is provided with an inner concave cavity, and a collimating lens is arranged in the inner concave cavity. The input optical fiber seat is provided with an inner hole, and a focusing lens is installed in the inner hole. The collimating lens, the focusing lens, the output optical fiber and the input optical fiber are located on the same optical axis, and the shape of a connector of the input optical fiber seat is matched with the shape of an interface of the output optical fiber seat. According to the utility model, the end face of the optical fiber is not exposed any more, after the butt joint end is pulled away, the collimating mirror surface or the focusing mirror surface with a larger area is exposed in space dust, the power density of beam-expanded light on the surface of the lens is greatly reduced, the end face of the interface optical fiber cannot be burnt, and the optical fiber connector is suitable for occasions where the energy of transmitted light beams is larger.

Description

Technical Field

[0001] The utility model relates to a pluggable optical fiber docking device and a pluggable optical fiber rack, belonging to the technical field of optical fiber docking. Background Art

[0002] Optical fiber is used for long-distance information transmission. When light propagates in a homogeneous medium, signal loss is very small, but when it encounters a connector, signal loss will occur due to the change in the properties of the medium. Figure 1 and Figure 2 Fiber optic docking is widely used in signal plugging and unplugging of fiber optic communication equipment. This docking is to bring the end faces of the docked fibers infinitely close to achieve light transmission. Figure 2 After the docked optical fiber end faces are pulled out, they will be exposed to atmospheric dust, and the accumulated end face contamination will affect the optical transmission efficiency after the next docking. The communication light energy is generally at the milliwatt level, and the energy loss caused by end face contamination is very small. However, in high-power occasions such as processing fields, the optical power is generally from a few watts to more than ten watts, or even higher. This kind of energy fiber plugging and unplugging is also required in many occasions to facilitate the separation of the light source and the back-end device. If the existing direct docking method of communication optical fiber is adopted, the power lost at the end face will directly burn the optical fiber. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a pluggable optical fiber docking device, which can effectively protect the optical fiber end face after the optical fiber transmitting energy is plugged in and out, and maintain the efficiency of the optical fiber transmitting energy.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0005] A pluggable optical fiber docking device comprises an output optical fiber and an input optical fiber, wherein the output optical fiber and the input optical fiber are respectively mounted on an output optical fiber seat and an input optical fiber seat.

[0006] The output optical fiber holder has an inner cavity, a collimating lens is installed in the inner cavity, and the collimating lens isolates the inner cavity into a closed area. The input optical fiber holder has an inner hole, a focusing lens is installed in the inner hole, and the focusing lens isolates the inner hole into a closed area. The collimating lens and the focusing lens are located on the same optical axis as the output and input optical fibers.

[0007] The connector shape of the input optical fiber seat matches the interface shape of the output optical fiber seat. When the connector of the input optical fiber seat is inserted into the interface of the output optical fiber seat, the output optical fiber and the input optical fiber are connected.

[0008] Furthermore, the connector circumference of the input optical fiber seat is composed of a guide inclined surface, a center positioning surface and a precise coupling positioning surface which are connected in sequence.

[0009] Furthermore, the guiding inclined surface is a conical surface, the center positioning surface is a cylindrical surface, the precise coupling positioning surface is an annular plane, and the axes of the guiding inclined surface, the center positioning surface and the precise coupling positioning surface coincide with the optical axes of the collimating lens and the focusing lens.

[0010] The utility model also provides a pluggable optical fiber rack, which includes two output optical fibers, two input optical fibers, an output optical fiber seat complex, an input optical fiber seat complex, an output optical fiber installation plate, and an input optical fiber installation plate;

[0011] Two output optical fibers are fixedly connected to the output optical fiber mounting plate side by side, and the output optical fiber mounting plate is fixedly connected to the output optical fiber seat combination body, and the output optical fiber seat combination body is installed on the output optical fiber seat mounting frame, and the output optical fiber seat combination body has two inner concave cavities arranged side by side, and each of the inner concave cavities is installed with a collimating lens.

[0012] Two input optical fibers are fixedly mounted side by side on the input optical fiber mounting plate, the connector is fixedly connected to the input optical fiber seat complex, the input optical fiber seat complex is mounted on the input optical fiber seat mounting frame, the input optical fiber seat complex has two joints corresponding to the positions of the inner concave cavity, each joint has an inner hole, and a focusing lens is installed in each inner hole.

[0013] The corresponding collimating lens, focusing lens and output and input optical fibers are located on the same optical axis. The connector shape of the input optical fiber seat combination body matches the shape of the inner concave cavity. The output optical fiber seat combination body and the input optical fiber seat combination body form an integral plug-in docking structure.

[0014] Furthermore, the input optical fiber seat mounting frame adopts a double-interface optical fiber frame, and the output optical fiber seat mounting frame adopts a double-interface optical fiber frame structure.

[0015] The principle of the utility model is to use the connector of the input optical fiber seat to insert into the interface of the output optical fiber seat to achieve the optical fiber docking of the output optical fiber and the input optical fiber. The collimating lens in the concave cavity of the output optical fiber seat collimates the light beam into a collimated light output with a larger diameter, and then the focusing lens in the inner hole of the input optical fiber seat focuses the incident collimated light with a larger diameter to the optical fiber end face for coupling transmission.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model uses the connector of the input optical fiber holder and the interface of the output optical fiber holder to achieve optical fiber docking or unplugging. The collimating lens and focusing lens are set so that the optical fiber end face is no longer exposed, which greatly reduces the pollution of the optical fiber end face. After the docking end is unplugged, it is no longer the tiny optical fiber end face that is exposed to the space dust, but the larger collimating mirror or focusing mirror. The power density of the light after beam expansion on the lens surface is greatly reduced, which will not cause the interface optical fiber end face to burn, and is suitable for occasions with large energy of the transmitted light beam.

[0018] 2. The utility model avoids contamination of the optical fiber end face, reduces energy loss, and can ensure the transmission efficiency of the butt-jointed optical fibers after plugging and unplugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the prior art when the input optical fiber and the output optical fiber are connected.

[0020] Figure 2 It is a schematic diagram of the structure when the input optical fiber and the output optical fiber are pulled out in the prior art.

[0021] In the figure, 1a is the output optical fiber end face, and 4a is the input optical fiber end face.

[0022] Figure 3 It is a schematic structural diagram of an embodiment of the utility model after docking.

[0023] Figure 4 It is a schematic diagram of the structure of an embodiment of the utility model after the docking interface is pulled out.

[0024] Figure 5 It is a structural schematic diagram of an embodiment of the pluggable optical fiber rack of the utility model. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the purpose, technical solution and advantages of the utility model will become clearer. It should be noted that the described embodiments are preferred embodiments of the utility model, but not all embodiments.

[0026] Combination Figure 3 and Figure 4 As shown, a pluggable optical fiber docking device comprises an output optical fiber 1 and an input optical fiber 4, wherein the output optical fiber 1 and the input optical fiber 4 are respectively mounted on an output optical fiber seat 2 and an input optical fiber seat 3.

[0027] The output optical fiber holder 2 has an inner cavity 20, in which a collimating lens 5 is installed, and the collimating lens isolates the inner cavity into a closed area. The output light of the output optical fiber 1 is coupled and transmitted to the collimating lens 5, and the light beam is collimated into a collimated light output with a relatively large diameter. The input optical fiber holder 3 is provided with an inner hole 30, in which a focusing lens 6 is installed, and the focusing lens 6 isolates the inner hole into a closed area. The distance between the focusing lens 6 and the end face of the input optical fiber is the length of the focal length, and the incident collimated light with a relatively large diameter is focused to the end face of the input optical fiber for coupling and transmission. The collimating lens 5 and the focusing lens 6 are located on the same optical axis as the output optical fiber 1 and the input optical fiber 4. The connector shape of the input optical fiber holder 3 matches the interface shape of the output optical fiber holder 2. When the connector of the input optical fiber holder 3 is inserted into the interface of the output optical fiber holder 2, the optical fiber docking of the output optical fiber 1 and the input optical fiber 4 is achieved.

[0028] In order to facilitate the plugging and unplugging of the connector in the interface, the connector circumference of the input optical fiber seat 3 is composed of a guide bevel 31, a center positioning surface 32 and a precise coupling positioning surface 33 connected in sequence. The guide bevel 31 is a conical surface, and the center positioning surface 32 is a cylindrical surface. The matching accuracy of the center positioning surface 32 and the interface of the output optical fiber seat 2 is relatively loose. The precise coupling positioning surface 33 is an annular plane, and the verticality accuracy of the positioning surface and the optical fiber axis is very high to ensure the coupling accuracy. The axes of the guide bevel 31, the center positioning surface 32 and the precise coupling positioning surface 33 coincide with the optical axes of the collimating lens 5 and the focusing lens 6.

[0029] Combination Figure 5 As shown, the utility model also provides a pluggable optical fiber rack, which includes two output optical fibers 1, two input optical fibers 4, an output optical fiber seat complex 2', an output optical fiber seat complex 3', an output optical fiber installation piece 11 and an input optical fiber installation piece 12.

[0030] Two output optical fibers 1 are fixedly connected side by side to an output optical fiber mounting plate 11, and the output optical fiber mounting plate 11 is fixedly connected to an output optical fiber seat complex 2', and the output optical fiber seat complex 2' is mounted on an output optical fiber seat mounting frame 7, and the output optical fiber seat complex 2' has two inner concave cavities 20' arranged side by side, and a collimating lens 5 is installed in each of the inner concave cavities.

[0031] Two input optical fibers 4 are fixedly mounted side by side on an input optical fiber mounting plate 12, and the input optical fiber mounting plate 12 is fixedly connected to an input optical fiber seat complex 3', and the input optical fiber seat complex 3' is mounted on an input optical fiber seat mounting frame 8, and the input optical fiber seat complex 3' has two joints corresponding to the positions of the inner concave cavity 20', and each joint has an inner hole 30', and a focusing lens 6 is installed in each of the inner holes 30'.

[0032] The corresponding collimating lens 5, focusing lens 6 and output and input optical fibers are located on the same optical axis. The connector shape of the input optical fiber seat complex 3' matches the shape of the inner cavity 20'. The output optical fiber seat complex 2' and the input optical fiber seat complex 3' form an integral plug-in docking structure.

[0033] The input optical fiber seat mounting frame 8 adopts a double SC interface optical fiber frame, and the output optical fiber seat mounting frame 7 adopts a double FC interface optical fiber frame structure. The number of the output optical fiber seat and the input optical fiber seat are both two.

[0034] Example

[0035] The utility model is applied to a solution of a 50-pair plug-in fiber rack. The output and input optical fibers involved utilize FC interface optical fibers and SC interface optical fibers, and cooperate with the structure of the output optical fiber seat and the input optical fiber seat of the utility model. And using the double SC interface optical fiber rack structure, it is designed into a double-line input optical fiber seat, and under the action of the conical spring 9 and the sliding top rod 10, a floating body with a clamping function is formed. Five small floating bodies form a ten-way plug-in interface. Five plug-in interfaces are assembled on the entire plug-in fiber rack. Accordingly, using SC interface optical fibers, five groups of input optical fiber seats are designed to form a fifty-way pneumatic plug-in interface.

[0036] The above is only a description of the preferred embodiment of the utility model, and is not a limitation of the protection scope of the utility model. Obviously, any technician familiar with the field can easily think of replacement or change to obtain other embodiments based on the above embodiments, which should all be included in the protection scope of the utility model.

Claims

1. A pluggable optical fiber docking device, comprising an output optical fiber and an input optical fiber, wherein the output optical fiber and the input optical fiber are respectively mounted on an output optical fiber seat and an input optical fiber seat, wherein: The output optical fiber holder has an inner cavity, a collimating lens is installed in the inner cavity, and the collimating lens isolates the inner cavity into a closed area; the input optical fiber holder has an inner hole, a focusing lens is installed in the inner hole, and the focusing lens isolates the inner hole into a closed area; the collimating lens and the focusing lens are located on the same optical axis as the output and input optical fibers; The connector shape of the input optical fiber seat matches the interface shape of the output optical fiber seat. When the connector of the input optical fiber seat is inserted into the interface of the output optical fiber seat, the output optical fiber and the input optical fiber are connected.

2. The pluggable optical fiber docking device according to claim 1, characterized in that: The connector circumference of the input optical fiber seat is composed of a guide inclined surface, a center positioning surface and a precise coupling positioning surface which are connected in sequence.

3. The pluggable optical fiber docking device according to claim 2, characterized in that: The guiding inclined surface is a conical surface, the center positioning surface is a cylindrical surface, the precise coupling positioning surface is a plane, and the axes of the guiding inclined surface, the center positioning surface and the precise coupling positioning surface coincide with the optical axes of the collimating lens and the focusing lens.

4. A pluggable optical fiber rack, characterized in that: It includes two output optical fibers, two input optical fibers, an output optical fiber seat combination, an input optical fiber seat combination, an output optical fiber installation plate and an input optical fiber installation plate; Two output optical fibers are fixedly connected to the output optical fiber mounting plate side by side, the output optical fiber mounting plate is fixedly connected to the output optical fiber seat combination, the output optical fiber seat combination is installed on the output optical fiber seat mounting frame, the output optical fiber seat combination has two inner concave cavities arranged side by side, and each of the inner concave cavities is installed with a collimating lens; Two input optical fibers are fixedly mounted side by side on an input optical fiber mounting plate, the input optical fiber mounting plate is fixedly connected to an input optical fiber seat complex, the input optical fiber seat complex is mounted on an input optical fiber seat mounting frame, the input optical fiber seat complex has two joints corresponding to the positions of the inner concave cavity, each joint is provided with an inner hole, and a focusing lens is installed in each of the inner holes; The corresponding collimating lens, focusing lens and output and input optical fibers are located on the same optical axis. The connector shape of the input optical fiber seat combination body matches the shape of the inner concave cavity. The output optical fiber seat combination body and the input optical fiber seat combination body form an integral plug-in docking structure.

5. The pluggable optical fiber rack according to claim 4, characterized in that: The output optical fiber seat mounting frame adopts a double-interface optical fiber frame, and the input optical fiber seat mounting frame adopts a double-interface optical fiber frame structure.

Images