CN220820292U - Optical waveguide combiner - Google Patents

Abstract

The utility model relates to the technical field of optical waveguide wave combiners, in particular to an optical waveguide wave combiners, which comprises: the optical fiber connector comprises a box body, at least three optical fiber adapters fixedly arranged in the box body and a light splitting structure; the box body is of a hollow structure, and an optical fiber adapter port is arranged at the side surface of the box body corresponding to the position of the optical fiber adapter; the at least three optical fiber adapters are respectively connected with two ends of the light splitting structure through connecting optical fibers; the box body is provided with a groove, and the groove is used for limiting the fixing piece when the optical waveguide combiner is fixed with external equipment through the fixing piece. Through the mode, the optical waveguide combiner which is more efficient in packaging and more convenient to install is achieved.

Description

Optical waveguide combiner

Technical Field

The utility model relates to the technical field of optical waveguide wave combiners, in particular to an optical waveguide wave combiners.

Background

In the field of home broadband and wireless fronthaul in recent years, passive WDM (WAVELENGTH DIVISION MULTIPLEXING, optical waveguide combiner) devices have been widely used. With the development of the market, the main application scene is shaped gradually, and the packaging mode of the passive WDM equipment is basically solidified into a card box package. The WDM1r (WAVELENGTH DIVISION MULTIPLEXING FIRST REVISION, first-generation Optical waveguide combiner) device commonly used in a home broadband mainly has 2 application modes, namely, the device is built in an OLT (Optical LINE TERMINAL ) Combo PON board or packaged by adopting a single-layer card box.

The inventors found that: the existing insertion box has too large packaging size to be matched with the environment with narrow construction space. However, if a smaller package structure is adopted, the conventional process needs to fix glass tubes with several wavebands inside the box body at the same time during production, and enough fiber coiling space needs to be reserved for the optical fibers connected between each device, which is contradictory to pursuing smaller size space.

Disclosure of utility model

Aiming at the defects in the prior art, the main object of the utility model is to provide an optical waveguide combiner which is more convenient to install.

In order to solve the above technical problems, an embodiment of the present utility model provides an optical waveguide combiner, including: the optical fiber connector comprises a box body, at least three optical fiber adapters fixedly arranged in the box body and a light splitting structure; the box body is of a hollow structure, and an optical fiber adapter port is arranged at the side surface of the box body corresponding to the position of the optical fiber adapter; the at least three optical fiber adapters are respectively connected with two ends of the light splitting structure through connecting optical fibers; the box body is provided with a groove, and the groove is used for limiting the fixing piece when the optical waveguide combiner is fixed with external equipment through the fixing piece.

Optionally, the optical splitting structure includes a single-fiber multi-directional optical splitter; the at least three fiber optic adapters include an input fiber optic adapter and an output fiber optic adapter; the single-fiber multi-directional optical splitter splits or combines the signals input by the input optical fiber adapter and outputs the signals to the output optical fiber adapter.

Optionally, the at least three fiber optic adapters include one input fiber optic adapter and two output fiber optic adapters; the single-fiber multi-directional optical splitter splits an optical signal input by the input optical fiber adapter into a first passive optical network signal and a second passive optical network signal, and outputs the first passive optical network signal and the second passive optical network signal to the two output optical fiber adapters respectively; wherein the first passive optical network signal is a gigabit passive optical network signal or an ethernet-based passive optical network signal; the second passive fiber optic network signal is a 10 gigabit capable passive fiber optic network signal.

Optionally, the single-fiber multi-directional optical splitter is a filter; the filter is adhered and fixed in the box body.

Optionally, the connection optical fiber is a bending resistant optical fiber.

Optionally, the box body comprises a box body base and a box body cover plate; the groove is arranged on the box body base and/or the box body cover plate.

Optionally, the grooves are arranged at middle symmetrical positions on two sides of the base of the box body.

Optionally, a through hole penetrating through the box body is formed in the box body, and the through hole is used for fixing the optical waveguide combiner and the external device.

Optionally, the box body is provided with a protruding portion, and the through hole penetrates through the protruding portion.

Optionally, a clamping groove is disposed in the box body and corresponding to the position of the port of the optical fiber adapter, and the clamping groove is used for clamping the optical fiber adapter.

In an embodiment of the present utility model, the optical waveguide combiner includes: the optical fiber connector comprises a box body, at least three optical fiber adapters fixedly arranged in the box body and a light splitting structure; the box body is of a hollow structure, and an optical fiber adapter port is arranged at the side surface of the box body corresponding to the position of the optical fiber adapter; the at least three optical fiber adapters are respectively connected with two ends of the light splitting structure through connecting optical fibers; the box body is provided with a groove, and the groove is used for limiting the fixing piece when the optical waveguide combiner is fixed with external equipment 80 through the fixing piece, so that the optical waveguide combiner is more convenient and stable to install, and the installation efficiency and the usability of the optical waveguide combiner are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 shows a top view of a cassette base 102 of an optical waveguide combiner according to an embodiment of the present utility model;

FIG. 2 illustrates a bottom view of the cassette base 102 of the optical waveguide combiner provided in one embodiment of the utility model;

FIG. 3 is a schematic diagram showing connection of an optical waveguide combiner with external equipment according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an internal optical path of an optical waveguide combiner according to still another embodiment of the present utility model;

Fig. 5 is a schematic perspective view of an optical waveguide combiner according to still another embodiment of the present utility model when a box base 101 and a box cover 102 are closed;

Fig. 6 shows a top view of a box cover 101 of an optical waveguide combiner according to still another embodiment of the present utility model;

Fig. 7 is a schematic perspective view illustrating a clamping groove in an optical waveguide combiner according to another embodiment of the present utility model;

FIG. 8 is a top view showing a clamping groove in an optical waveguide combiner according to still another embodiment of the present utility model;

In the above figures:

The optical waveguide combiner 00, a box 10, a box base 101, a box cover 102, a through hole 103, a protruding portion 104, a first fixing hole 105a, a second fixing hole 105b, a third fixing hole 105c, a fourth fixing hole 105d, an optical fiber adapter 20, a spectroscopic structure 30, an optical fiber adapter port 40, a first optical fiber adapter port 40a, a second optical fiber adapter port 40b, a third optical fiber adapter port 40c, a first connection optical fiber 50a, a second connection optical fiber 50b, a third connection optical fiber 50c, a first groove 60a, a second groove 60b, a click slot 70, an external device 80, and a hook 801.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In one embodiment of the present utility model, fig. 1 shows a top view of a box base 102 of an optical waveguide combiner according to one embodiment of the present utility model. Fig. 2 illustrates a bottom view of the cassette base 102 of the optical waveguide combiner provided in one embodiment of the utility model. Referring to fig. 1 and 2, the optical waveguide combiner includes: the optical fiber connector comprises a box body 10, at least three optical fiber adapters 20 fixedly arranged in the box body 10 and a light splitting structure 30; wherein, the box body 10 is of a hollow structure, and an optical fiber adapter port 40 is arranged at a position corresponding to the optical fiber adapter 20 on the side surface of the box body 10; the at least three fiber adapters 20 are respectively connected with two ends of the light splitting structure 30 through connecting optical fibers; the box body 10 is provided with a groove, and the groove is used for limiting the fixing piece when the optical waveguide combiner is fixed with the external device 80 through the fixing piece. It will be appreciated that fig. 1 and 2 are only schematic illustrations of three fiber optic adapters 20. As shown in fig. 1, when the number of the optical fiber adapters 20 is three, the connection optical fibers correspondingly include a first connection optical fiber 50a, a second connection optical fiber 50b, and a third connection optical fiber 50c. As shown in fig. 2, the number of grooves is at least one, and may be, for example, a first groove 60a and a second groove 60b provided on both sides of the case bottom plate 102 of the case 10.

In order to facilitate the installation and use of the internal devices of the optical waveguide combiner, the box body 10 may be divided into a box body base 101 and a box body cover plate 102, specifically, fixing holes are correspondingly provided on the box body base 101 and the box body cover plate 102, and the box body base 101 and the box body cover plate 102 are fixedly connected by installing fixing pieces such as screws in the fixing holes. Specifically, as shown in fig. 1, the fixing holes may be provided at four corners of the case, respectively, that is, the fixing holes include a first fixing hole 105a, a second fixing hole 105b, a third fixing hole 105c, and a fourth fixing hole 105d.

The optical fiber adapters 20 are configured to input external signals or output signals to the outside, and the optical splitting structure 30 is configured to split or combine signals input by at least three optical fiber adapters 20 and output the signals to other optical fiber adapters 20.

Specifically, the fiber optic adapter 20, i.e., flange, coupler, is a butt-joint component for the movable connection of optical fibers, and specifically, the optical fibers are connected by the adapter through an open sleeve therein. The embodiments of the present utility model are not limited to a particular type of fiber optic adapter 20, and may be, for example, plate-type flat-welded flanges, necked butt-welded flanges, integral flanges, socket-welded flanges, threaded flanges, butt-welded ring-loose flanges, and the like. The connection of the external signal input/output device to the fiber optic adapter 20 may be through optical fibers. It will be appreciated that the fiber optic adapter port 40 should at least be capable of receiving the fiber optic adapter 20 such that external signal input/output devices can be connected to the fiber optic adapter 20 through the fiber optic adapter port 40.

As shown in fig. 1, in order to improve the packaging efficiency of the optical waveguide combiner and the compactness of the internal structure, each of the optical fiber adapters 20 may be connected to the optical splitting structure 30 by connecting optical fibers inside the case 10.

Considering that the services such as wide home, wireless, video monitoring and the like experience explosive construction period, the network time of corridor fiber splitting boxes and house entering boxes of most residential buildings and commercial buildings exceeds 10 years, the internal tray, the optical splitter and the fiber jumping are basically in a heavy-load state, and the deployment space of the existing optical waveguide combiner is very tense. Meanwhile, the package size of the plug-in box of the existing WDM equipment is too large to match the environment with a narrow construction space, so in order to make the installation of the optical waveguide combiner in the narrow space more convenient and stable, in the embodiment of the present utility model, fig. 3 shows a schematic diagram of the connection between the optical waveguide combiner and an external device according to still another embodiment of the present utility model. As shown in fig. 2 and 3, a groove is provided on the case 10, so that when the optical waveguide combiner is fixed to the external device 80 by the fixing member, the optical waveguide combiner is more firmly fixed to the external device 80 by restraining the fixing member in the groove. Wherein the securing member may be a strap, tie, or the like for binding a plurality of objects together, and the external device 80 may be an environment in which the optical waveguide splitter is located, such as a fiber drop box or other installed element in a drop box.

Further, in view of the fact that the smaller the volume of the optical waveguide combiner is, the more flexible and convenient it is to install in a limited space, and thus, in order to further simplify the internal optical path of the optical waveguide combiner, the number of internal devices is reduced, thereby improving the compactness of the internal structure of the optical waveguide combiner, in still another embodiment of the present utility model, the optical splitting structure 30 includes a single-fiber multi-directional optical splitter; the at least three fiber optic adapters 20 include an input fiber optic adapter and an output fiber optic adapter; the single-fiber multi-directional optical splitter splits or combines the signals input by the input optical fiber adapter and outputs the signals to the output optical fiber adapter.

In order to simplify the internal optical path of the optical waveguide multiplexer and reduce the number of components, the size of the optical waveguide multiplexer is further reduced. The single-fiber multi-directional optical splitter can be a single-fiber multi-directional filter or a glass tube with single-fiber multi-directional function.

Further, fig. 4 is a schematic view illustrating an internal optical path of an optical waveguide combiner according to still another embodiment of the present utility model. As shown in fig. 3 and 4, the at least three fiber optic adapters 20 include one input fiber optic adapter and two output fiber optic adapters; the single-fiber multi-directional optical splitter outputs the optical signals input by the input optical fiber adapter to the two output optical fiber adapters as a first passive optical network signal and a second passive optical network signal respectively; wherein the first passive optical network signal is a gigabit passive optical network signal or an ethernet-based passive optical network signal; the second passive fiber optic network signal is a 10 gigabit capable passive fiber optic network signal. As shown in fig. 3, the fiber optic adapter ports 40 include a first fiber optic adapter port 40a, a second fiber optic adapter port 40b, and a third fiber optic adapter port 40c.

The gigabit passive optical network signal based on the ethernet is ETHERNET PASSIVE optical network, EPON for short, the gigabit passive optical network signal is gigabit-capable PON for short, the GPON signal for short, and the passive optical network signal with 10gigabit capability is 10Gigabit Passive Optical Network, XG-PON for short. As shown in fig. 4, the optical path of the input signal inputted from the input fiber adapter can be divided into G-PON signals having wavelengths ranging from 1290nm to 1500nm and XG-PON signals having wavelengths ranging from 1260nm to 1280nm and 1575nm to 1580nm by the optical dividing element 30. The input signal is split into the XG-PON signal and the EPON/GPON signal by the single-fiber multi-directional optical splitter, so that the optical waveguide combiner which is more convenient to install, more efficient and compact in packaging and capable of simultaneously providing network signals with various performances is realized.

Further, the single-fiber multi-directional beam splitter is a filter; the filter is adhesively secured within the case 10.

In particular, considering that the conventional process requires glass tubes of several wavelength bands to be simultaneously fixed inside the case 10 at the time of production if a smaller package structure is adopted, the optical fiber connected between each device needs to reserve a sufficient space for coiling, which is contradictory to pursuing a smaller size space. And the structure of the glass tube is fixed by glue, so that the performance of other channels can be influenced and the device is more likely to be poor when the packaging and single-channel maintenance are performed subsequently. Therefore, in still another embodiment of the present utility model, a filter having a smaller size and more convenient installation is selected as the single-fiber multi-directional beam splitter. Further, in order to improve usability of the optical path, the inside of the optical waveguide combiner is made more compact, and the filter may be fixed inside the case 10 in an adhesive fixing manner. Wherein the adhesive fixing may comprise fixing the filter by glue or other adhesive. It should be noted that, the fixing position of the filter is not limited in the embodiment of the present utility model, and the number of the filter may be at least one.

Further, considering that the internal space of the optical waveguide combiner is limited, the connection optical fiber may need to be bent and/or folded inside the optical waveguide combiner, and in order to avoid that the bending and/or folding has an influence on the performance of the connection optical fiber, thereby affecting the usability of the optical waveguide combiner, in still another embodiment of the present utility model, the connection optical fiber is a bending resistant optical fiber. So that the insertion loss of equipment is not increased when the fiber is produced.

Further, in order to protect the internal components of the optical waveguide combiner, improve the tightness of the optical waveguide combiner, and at the same time facilitate the fixing of the optical waveguide combiner with the external device 80 in a more flexible manner, in yet another embodiment of the present utility model, fig. 5 is a schematic perspective view of the optical waveguide combiner provided in yet another embodiment of the present utility model when the box base 101 and the box cover 102 are closed. As shown in fig. 5, the case 10 includes a case base 101 and a case base 102; the grooves are provided on the cassette base 101 and/or the cassette base 102.

Specifically, the case base 101 and the case base 102 may be tightly fixed by fasteners to form a closed space except for the adapter port, and a groove may be provided on an edge of at least one side of the case base 101 and/or the case base 102. It will be appreciated that the width, depth, and placement of the grooves on the edges of the cassette base 101 and/or the cassette base 102 may be as desired. Preferably, in order to enhance the fixing stability of the optical waveguide combiner, the grooves are disposed at the middle symmetrical positions at both sides of the case base 101 in still another embodiment of the present utility model, considering that the fixing member is generally a surrounding type to bind the optical waveguide combiner with the external device 80. The first groove 60a and the second groove 60b are respectively arranged at the middle symmetrical positions of the two sides of the box body base 101, so that the fixing piece can more uniformly fix the optical waveguide combiner with the external equipment 80 through stress on the two sides of the base, and the loosening probability of the optical waveguide combiner is reduced.

Further, considering that the deployment environment where the optical waveguide combiner is located is small in space, components and parts are complicated, and the controllability is low, for example, the possibility that a certain loosening or breaking exists in a fastener limited by a groove, in order to further improve the installation efficiency and stability of the optical waveguide combiner, a through hole 103 may be provided on the box body 10 itself, and the fixed relationship between the optical waveguide combiner and the external device 80 may be further stabilized through the through hole 103. Specifically, in still another embodiment of the present utility model, a through hole 103 penetrating through the case 10 is provided on the case 10, and the through hole 103 is used for fixing the optical waveguide combiner to the external device 80.

The fixing manner of the optical waveguide combiner through the through hole 103 may be that a fixing auxiliary material such as a ribbon passes through the through hole 103 and then is bound to the external device 80, or may be that the optical waveguide combiner is directly suspended on the external device 80 through the through hole 103. Alternatively, the suspension connection of the optical waveguide combiner with the external device 80 may also be achieved by suspending the through-hole 103 to a hook 801 provided externally on the external device 80. Wherein the hook 801 may be magnetically attracted to the external device 80.

Further, considering that if the through hole 103 is provided in the closed space between the box base 101 and the box base 102 of the optical waveguide combiner, the stability and safety of the internal devices of the optical waveguide combiner are affected to some extent, and usability of the optical waveguide combiner is reduced, in still another embodiment of the present utility model, fig. 6 is a top view of the box cover 101 of the optical waveguide combiner according to still another embodiment of the present utility model. As shown in fig. 5 and 6, the case 10 is provided with a protruding portion 104, and the through hole 103 is disposed through the protruding portion 104.

In view of the convenience of opening and closing between the case base 101 and the case base 102, and the fact that the case base 101 is a surface to which the external device 80 is fixedly connected generally when the optical waveguide combiner is mounted, the protruding portion 104 may be provided at one end of the case base 101, thereby facilitating the suspension connection of the optical waveguide combiner to the external device 80 through the through hole 103 in the protruding portion 104.

Further, in order to further effectively utilize the internal space of the optical waveguide combiner box 10 and further reduce the size thereof, in still another embodiment of the present utility model, as shown in fig. 7 and 8, a positioning slot 70 is disposed in the box 10 at a position corresponding to the optical fiber adapter port 40, and the positioning slot 70 is used for clamping the optical fiber adapter 20. Fig. 7 is a schematic perspective view illustrating a clamping groove in an optical waveguide combiner according to another embodiment of the present utility model. Fig. 8 is a top view showing a clamping groove in an optical waveguide combiner according to still another embodiment of the present utility model.

The optical fiber adapter 20 at the corresponding position can be internally clamped and not loosened through the clamping groove 70, so that the usability is improved, and meanwhile, the size of the optical waveguide combiner can be reduced, and the optical waveguide combiner can be installed in a narrow space. It should be noted that, the clamping groove 70 in the embodiment of the present utility model may be detachably disposed inside the box 10, and the clamping depth and the clamping width of the clamping groove 70 may be adjustable, so that the clamping groove 70 may be adapted to various types of optical fiber adapters 20, and the optical waveguide combiner has a wider application scenario.

The optical waveguide combiner provided by the embodiment of the utility model comprises a box body 10, at least three optical fiber adapters 20 fixedly arranged in the box body 10 and a light splitting structure 30; wherein, the box body 10 is of a hollow structure, and an optical fiber adapter port 40 is arranged at a position corresponding to the optical fiber adapter 20 on the side surface of the box body 10; the at least three fiber adapters 20 are respectively connected with two ends of the light splitting structure 30 through connecting optical fibers; the box body 10 is provided with a groove, and the groove is used for limiting the fixing piece when the optical waveguide combiner is fixed with the external equipment 80 through the fixing piece, so that the optical waveguide combiner is more convenient and stable to install, and the installation efficiency and the usability of the optical waveguide combiner are improved.

Specifically, the embodiment of the utility model has the advantages that through the small, compact and firm structure, the protruding part 104 at the bottom of the upper cover of the box body 10 is provided with the through holes, and the through holes are designed to be convenient for fastening with fixing auxiliary materials such as a binding belt and the like when in construction and installation, and can also be used for hanging after being adsorbed on the inner wall of the iron box body by the magnetic hook 801. The construction and installation method is particularly suitable for construction and installation in the environments of light traffic boxes, corridor fiber distribution boxes, weak electric wells, house-entry boxes and the like which are in service for years on the existing network, and the side edges of the light traffic boxes, corridor fiber distribution boxes, weak electric wells, house-entry boxes and the like are provided with residual spaces. The box body 10 is at the bottom of the box inside and sets up fiber adapter 20 screens groove 70, can make the built-in chucking of fiber adapter 20 not become flexible, need not to use screw flange, and convenient production improves assembly efficiency, can reduce manufacturing cost, has simplified the light path part, can reduce the number of times during production, can change whole single two-way filter disc at any time to bad product, does not need the investigation device one by one, has improved the efficiency that production detected. In sum, the embodiment of the utility model has the characteristics of economical and efficient packaging, firmness, compact structure, low insertion loss, small space volume and convenient installation, effectively solves the problems that the insertion sheet type packaging is large in size, cannot be constructed in a narrow space and is inconvenient to fix, and is more beneficial to batch production and maintenance.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. An optical waveguide combiner, the optical waveguide combiner comprising: the optical fiber connector comprises a box body, at least three optical fiber adapters fixedly arranged in the box body and a light splitting structure; the box body is of a hollow structure, and an optical fiber adapter port is arranged at the side surface of the box body corresponding to the position of the optical fiber adapter; the at least three optical fiber adapters are respectively connected with two ends of the light splitting structure through connecting optical fibers; the box body is provided with a groove, and the groove is used for limiting the fixing piece when the optical waveguide combiner is fixed with external equipment through the fixing piece.

2. The optical waveguide combiner of claim 1, wherein the optical splitting structure comprises a single-fiber multi-directional optical splitter; the at least three fiber optic adapters include an input fiber optic adapter and an output fiber optic adapter; the single-fiber multi-directional optical splitter splits or combines the signals input by the input optical fiber adapter and outputs the signals to the output optical fiber adapter.

3. The optical waveguide combiner of claim 2, wherein the at least three fiber optic adapters comprise one input fiber optic adapter and two output fiber optic adapters; the single-fiber multi-directional optical splitter splits an optical signal input by the input optical fiber adapter into a first passive optical network signal and a second passive optical network signal, and outputs the first passive optical network signal and the second passive optical network signal to the two output optical fiber adapters respectively; wherein the first passive optical network signal is a gigabit passive optical network signal or an ethernet-based passive optical network signal; the second passive fiber optic network signal is a 10 gigabit capable passive fiber optic network signal.

4. The optical waveguide combiner of claim 2, wherein the single-fiber multi-directional optical splitter is a filter; the filter is adhered and fixed in the box body.

5. The optical waveguide combiner of claim 2, wherein the connecting fiber is a bending resistant fiber.

6. The optical waveguide combiner of claim 1, wherein the box comprises a box base and a box cover; the groove is arranged on the box body base and/or the box body cover plate.

7. The optical waveguide combiner of claim 6, wherein the grooves are disposed in a central symmetrical position on both sides of the cassette base.

8. The optical waveguide combiner according to claim 1, wherein a through hole penetrating through the case is provided in the case, and the through hole is used for fixing the optical waveguide combiner to the external device.

9. The optical waveguide combiner of claim 8, wherein the case is provided with a protruding portion, and the through hole is formed through the protruding portion.

10. The optical waveguide combiner according to claim 1, wherein a clamping groove is provided in the box body at a position corresponding to the port of the optical fiber adapter, and the clamping groove is used for clamping the optical fiber adapter.