WO2024160004A1

WO2024160004A1 - Optical splitting device and optical splitting assembly

Info

Publication number: WO2024160004A1
Application number: PCT/CN2024/070160
Authority: WO
Inventors: 王甫喜; 谢良文; 李三星
Original assignee: 华为技术有限公司
Priority date: 2023-02-03
Filing date: 2024-01-02
Publication date: 2024-08-08
Also published as: WO2024160004A9; CN219657915U

Abstract

Provided in the embodiments of the present application are an optical splitting device and an optical splitting assembly, which are used for alleviating the problem of time and labor consumption of assembly of an existing optical splitting box. The optical splitting device comprises a box body, an optical splitting portion, a first connecting portion, a second connecting portion and at least one third connecting portion. The optical splitting portion comprises an optical splitting waveguide. In the first connecting portion, one end of a first connecting fiber core is connected to an input end of the optical splitting waveguide, and the other end of the first connecting fiber core is connected to a first connecting interface. In the second connecting portion, one end of a second connecting fiber core is connected to a first output end of the optical splitting waveguide, and the other end of the second connecting fiber core is connected to a second connecting interface. In the third connecting portion, one end of a third connecting fiber core is connected to a second output end of the optical splitting waveguide, and the other end of the third connecting fiber core is connected to a third connecting interface. In the embodiments of the present application, the optical splitting portion is provided, so that the regularity of an optical splitting path is improved; and the first connecting portion, the second connecting portion and the at least one third connecting portion are provided, so that integrated manufacturing of the optical splitting device can be realized, thereby avoiding subsequent manual assembly, and saving on manpower.

Description

Spectral splitter and spectroscopic component

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office on February 3, 2023, with application number 202320252874.0 and application name “Spectral Spectrometer and Spectral Component”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of optical communication technology, and in particular to a light splitting device and a light splitting component.

Background Art

In the passive optical network (PON) system, it usually includes optical line terminal (OLT), optical distribution network (ODN) and optical network unit (ONU). ODN provides a physical channel for optical transmission between OLT and ONU.

ODN generally includes a splitter, which redistributes the received optical signals. The splitter is usually located in a box with a fiber optic adapter, and the interface of the splitter is plugged and connected with the corresponding fiber optic adapter to form a splitter box. However, the assembly process of the splitter box is time-consuming and labor-intensive.

Utility Model Content

The purpose of the embodiments of the present application is to provide a spectroscopic device and a spectroscopic assembly, which are used to improve the problem that the current spectroscopic box assembly process is time-consuming and labor-intensive.

In order to achieve the above purpose, the present application provides the following solutions:

On the one hand, a spectrometer is provided, which includes a box body, a spectrometer located in the box body, and a first connection part, a second connection part, and at least one third connection part installed on the box body. The spectrometer includes a substrate and a spectrometer waveguide, the spectrometer waveguide is located on the substrate, and the spectrometer waveguide includes an input end, a first output end, and at least one second output end. The first connection part includes a first connection interface and a first connection fiber core, one end of the first connection fiber core is connected to the input end, and the other end is connected to the first connection interface; at least part of the first connection interface is exposed outside the box body. The second connection part includes a second connection interface and a second connection fiber core, one end of the second connection fiber core is connected to the first output end, and the other end is connected to the second connection interface; at least part of the second connection interface is exposed outside the box body. The third connecting part includes a third connecting interface and a third connecting fiber core, one end of the third connecting fiber core is connected to the second output end, and the other end is connected to the third connecting interface; at least part of the third connecting interface is exposed outside the box body; the orthographic projections of any two connecting fiber cores among the first connecting fiber core, the second connecting fiber core and the third connecting fiber core on the reference plane have no overlap, and the reference plane is a plane parallel to the substrate.

Through the above-mentioned setting, the first connection interface can receive the optical signal, and transmit the received optical signal to the input end of the splitter waveguide. After the optical signal is distributed by the splitter waveguide, it is transmitted from the first output end of the splitter waveguide to the second connection interface, and from the second output end of the splitter waveguide to the third connection interface, thereby achieving the effect of redistributing the optical signal by the splitter device. Compared with the related art, the optical fiber is manually coiled to achieve the regular arrangement of the optical fibers in the sub-packaging box. The embodiment of the present application is conducive to improving the regularity of the splitter path in the splitter device and saving manpower by setting the splitter part; on this basis, the present application is able to realize the integrated production of the splitter device by setting the first connection part, the second connection part and at least one third connection part, avoiding the use of manual assembly of the splitter into the box body, which is conducive to further saving manpower and improving the assembly efficiency of the splitter device.

At the same time, through the above arrangement, there is no need to reserve space for winding and laying the optical fiber, thereby improving the utilization rate of the internal space of the box body, which is conducive to miniaturization of the spectrometer and expanding the use scenarios of the spectrometer.

In some embodiments, the substrate includes a core mounting groove, and at least one of the first connecting core, the second connecting core, and the third connecting core is located in the core mounting groove. For example, the light splitting part can be a PLC (Planar Lightwave Circuit) chip. Through the above arrangement, the connecting core is aligned with the light splitting waveguide, which facilitates the transmission of the optical signal between the connecting core and the light splitting waveguide.

In some embodiments, the core installation groove includes a first side surface and a second side surface opposite to each other, the first side surface is adjacent to the second side surface, and the first side surface intersects with the second side surface. At least one of the first connecting core, the second connecting core, and the third connecting core is connected to the first side surface and the second side surface at the same time. The above arrangement is conducive to reducing the difficulty of manufacturing the core installation groove and improving the manufacturing efficiency of the light splitting part.

In some embodiments, the light splitting waveguide includes a main section and a branch section. The main section includes at least two first sub-sections and at least one The second sub-segment; the first sub-segment and the second sub-segment are alternately connected, and the extension direction of at least two first sub-segments is the same; the head end of the first first sub-segment is the input end of the splitter waveguide, and the tail end of the last first sub-segment is the first output end of the splitter waveguide. Through the above arrangement, part of the optical signal received at the input end can be transmitted to the first output end through the alternately connected first sub-segments and second sub-segments. The branch segment is connected to the tail end of the first sub-segment, and the tail end of the branch segment is the second output end of the splitter waveguide. Through the above arrangement, the splitter waveguide can receive the optical signal at the input end, distribute the optical signal to the first output end and the second output end, and transmit it out through the first output end and the second output end.

In some embodiments, the number of branch segments is at least one; the branch segments include a third sub-segment and a fourth sub-segment; a third sub-segment corresponds to a second sub-segment; the third sub-segment and the corresponding second sub-segment are connected to the tail end of the same first sub-segment; the head end of the fourth sub-segment is connected to the third sub-segment; the tail end of the fourth sub-segment is the second output end of the splitter waveguide. Through the above settings, the optical signal received at the input end can be distributed after being transmitted through at least one first sub-segment: a part of the optical signal is distributed to the corresponding third sub-segment, and further transmitted to the fourth sub-segment, and then transmitted to the corresponding second output end; another part of the optical signal is distributed to the corresponding second sub-segment, and after continuing to be transmitted through the first sub-segment of the next level, it is distributed again... In summary, the splitter waveguide can receive the optical signal through the input end, distribute the optical signal to the first output end and the second output end, and transmit it through the first output end and the second output end.

In some embodiments, the number of branch segments is one; the branch segment includes at least one connecting segment and at least one branch sub-segment, the connecting segment includes a first connecting sub-segment and two second connecting sub-segments, the head end of the second connecting sub-segment is connected to the tail end of the first connecting sub-segment; in two adjacent connecting segments, the head end of the first connecting sub-segment of one connecting segment is connected to the tail end of the second connecting sub-segment of the other connecting segment, the head end of the first connecting sub-segment of the first connecting segment is connected to the tail end of the first sub-segment, and the tail end of the second connecting sub-segment of the last connecting segment is connected to the head end of the branch sub-segment; the tail end of the branch sub-segment is the second output end of the splitter waveguide. Through the above arrangement, the optical signal received at the input end can be distributed after being transmitted through a first sub-segment: a part of the optical signal is distributed to the connecting segment, and further transmitted to the corresponding branch sub-segment, and then transmitted to the corresponding second output end; another part of the optical signal is distributed to the second sub-segment, and continues to be transmitted to the first output end through the first sub-segment of the next level. In summary, the optical splitting waveguide can receive an optical signal through the input end, distribute the optical signal to the first output end and the second output end, and transmit the optical signal through the first output end and the second output end.

In some embodiments, at least one of the first connection part, the second connection part, and the third connection part is configured to: further include a protective sleeve; the protective sleeve is sleeved outside the connection fiber core of the connection part. Through the above configuration, the protective sleeve can play a protective effect, which is beneficial to avoid damage to the connection fiber core inside it, and is beneficial to extend the service life of the splitter device.

In some embodiments, the connecting fiber core in the protective sleeve includes a curved portion. The above arrangement can further improve the regularity of the optical fiber layout inside the box body; at the same time, it is also beneficial to improve the production consistency of the optical splitter device and further improve the assembly efficiency of the optical splitter device.

In some embodiments, the box body includes a first through hole, a second through hole, and at least one third through hole passing through the box body. The first connecting fiber core, the second connecting fiber core, and the third connecting fiber core are all mounted in the box body; the first connecting interface is provided in the first through hole; a third connecting portion is provided corresponding to a third through hole, and a third connecting interface is provided in a third through hole; the second connecting fiber core is provided in the second through hole. Through the above arrangement, the spectrometer can be connected to other devices outside the shell, and at the same time, it is beneficial to improve the protective effect of the shell on its internal structure and extend the service life of the spectrometer.

In some embodiments, at least one of the first connection interface, the second connection interface, and the third connection interface is a fiber optic adapter. Through the above configuration, the connection between the connecting fiber core and other optical fibers can be achieved to ensure the highest connection performance.

On the other hand, a spectrometer component is provided, including multiple spectrometers, the multiple spectrometers include a first spectrometer and a second spectrometer connected in series, the first spectrometer and the second spectrometer are any one of the spectrometers in the above-mentioned embodiments; the second connection interface or the third connection interface of the first spectrometer is connected to the first connection interface of the second spectrometer.

The spectroscopic component provided in the embodiment of the present application includes the spectroscopic device as described above, and therefore has all the beneficial effects described above, which will not be described in detail here.

In some embodiments, at least part of the multiple optical splitters are standard parts, and the standard parts are configured so that the number of the third connection interfaces is a positive integer greater than or equal to 1. For example, the number of the third connection interfaces in the standard part is 1. When the number of the third connection interfaces of the optical splitters connected in series is six, and the third connection interface of the standard part is connected to the first connection interface of the optical splitter, the standard part and the optical splitter can form a splitter with a splitting ratio of 1:7. Through the above settings, more combinations of splitting ratios can be formed to meet different application requirements.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural diagram of a passive optical network provided in an embodiment of the present application;

FIG2 is a structural diagram of another passive optical network provided in an embodiment of the present application;

FIG3 is a structural diagram of a spectrometer provided in an embodiment of the present application;

FIG4 is a structural diagram of an optical splitter in some embodiments of the related art;

FIG5 is a structural diagram of a light splitting box in some embodiments of the related art;

FIG6 is a structural diagram of another light splitting device provided in an embodiment of the present application;

FIG7 is a cross-sectional view of another light splitting device provided in an embodiment of the present application;

FIG8 is a structural diagram of a light splitting unit provided in an embodiment of the present application;

Fig. 9 is a cross-sectional view of the light splitting device in Fig. 7 along the A-A section line;

FIG10 is a structural diagram of another spectroscopic device provided in an embodiment of the present application;

FIG. 11 is a cross-sectional view of another spectroscopic device provided in an embodiment of the present application.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

In the following, the terms "first", "second", etc. are used only for convenience of description and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

When describing some embodiments, the term "connection" and its derivative expressions may be used. For example, when describing some embodiments, the term "connection" may be used to indicate that two or more components have direct physical or electrical contact with each other.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

In the embodiments of the present application, directional indications such as up, down, left, right, front, and back, etc., used to explain the structure and movement of different components in the present application are relative. These indications are appropriate when the components are in the positions shown in the figures. However, if the description of the component position changes, then these directional indications will also change accordingly.

Fig. 1 is a structural diagram of a passive optical network provided in an embodiment of the present application. As shown in Fig. 1, an embodiment of the present application provides a passive optical network including a splitter component 1000, and the splitter component 1000 includes a plurality of splitter devices 100. The splitter devices 100 in the embodiment of the present application can be used in scenarios where splitting is required.

The plurality of optical splitters 100 include a first optical splitter 220 and a second optical splitter 210 connected in series, and the first optical splitter 220 and the second optical splitter 210 are both optical splitters 100 in any of the following embodiments. Here, the first optical splitter 220 and the second optical splitter 210 can be any two optical splitters 100 connected in series in the optical splitter assembly 1000.

Among them, the optical splitter 100 includes a first connection interface 311, a second connection interface 321 and at least one third connection interface 331. Exemplarily, the optical splitter 100 can receive the optical signal of the previous level through the first connection interface 311, and distribute the received optical signal to the second connection interface 321 and the third connection interface 331. The second connection interface 321 and the third connection interface 331 can transmit the distributed optical signal so that the optical splitter 100 can redistribute the optical signal. For example, when the number of the third connection interface 331 is one, the optical splitter 100 is a splitter with a splitting ratio of 1:2; when the number of the third connection interface 331 is seven, the optical splitter 100 is a splitter with a splitting ratio of 1:8. The embodiment of the present application can set the number of the third connection interface 331 as needed.

The second connection interface 321 or the third connection interface 331 of the first optical splitter 220 is connected to the first connection interface 311 of the second optical splitter 210. Through the above configuration, the first optical splitter 220 and the second optical splitter 210 can be connected in series, and the optical signal can be redistributed by the first optical splitter 220 and the second optical splitter 210 connected in series.

At Q1 in FIG. 1 , when the second connection interface 321 of the first optical splitter 220 is connected to the first connection interface 311 of the second optical splitter 210, that is, the first optical splitter 220 and the second optical splitter 210 are connected in series. The first optical splitter 220 can receive the optical signal of the previous stage through the first connection interface 311, and distribute the received optical signal to the second connection interface 321 and the third connection interface 331; the optical signal distributed to the second connection interface 321 of the first optical splitter 220 is received by the first connection interface 311 of the second optical splitter 210, and can be transmitted through the second connection interface 321 and the third connection interface 331 of the second optical splitter 210. To transmit the distributed optical signal; the optical signal distributed to the third connection interface 331 of the first optical splitter 220 is transmitted by the third connection interface 331 of the first optical splitter 220.

At Q2 in FIG. 1 , when the third connection interface 331 of the first optical splitter 220 is connected to the first connection interface 311 of the second optical splitter 210. The first optical splitter 220 can receive the optical signal of the previous stage through the first connection interface 311, and distribute the received optical signal to the second connection interface 321 and the third connection interface 331; the optical signal distributed to the third connection interface 331 of the first optical splitter 220 is received by the first connection interface 311 of the second optical splitter 210, and the distributed optical signal can be transmitted through the second connection interface 321 and the third connection interface 331 of the second optical splitter 210; the optical signal distributed to the second connection interface 321 of the first optical splitter 220 is transmitted by the second connection interface 321 of the first optical splitter 220.

Exemplarily, the first connection interface 311 of the first optical splitter 220 can be connected to the PON port of the optical line terminal 2000 (optical Line Termination, OLT), which is the core component of the optical access network and is usually located in the central office (Central Office, CO). The second connection interface 321 and the third connection interface 331 of the second optical splitter 210 can be connected to the PON port of the optical network unit (optical network unit, ONU). Through the above settings, the OLT can communicate optically with each ONU.

Fig. 2 is a structural diagram of another passive optical network provided by an embodiment of the present application. As shown in Fig. 2, in some embodiments, at least part of the plurality of optical splitting devices 100 may be standard components 230, and the standard components 230 may be configured such that the number of the third connection interfaces 331 is a positive integer greater than or equal to 1.

For example, the number of the third connection interface 331 in the standard part 230 is 1. When the number of the third connection interface 331 of the optical splitter 100 connected in series with the standard part 230 is six, and the third connection interface 331 of the standard part 230 is connected to the first connection interface 311 of the optical splitter 100, the standard part 230 and the optical splitter 100 can form a splitter with a splitting ratio of 1:7; when the number of the third connection interface 331 of the optical splitter 100 connected in series with the standard part 230 is sixteen, and the third connection interface 331 of the optical splitter 100 is connected to the first connection interface 311 of the optical splitter 100, the standard part 230 and the optical splitter 100 can form a splitter with a splitting ratio of 1:17. Through the above settings, more combinations of splitting ratios can be formed to meet different application requirements.

In the actual application process, multiple standard parts 230 can be cascaded together. For example, in the two cascaded standard parts 230, the second connection interface 321 of one standard part 230 can be connected to the first connection interface 311 of another standard part 230. After the multiple standard parts 230 are cascaded together, the third connection interfaces 331 of the multiple standard parts 230 are vacant. According to the different needs of the user, the corresponding spectrometers 100 can be connected in series on the corresponding standard parts 230 step by step. For example, among the three standard parts 230 connected in series from left to right in the figure, the corresponding spectrometers 100 can be connected in series on the first standard part 230 and the third standard part 230, respectively, and the third connection interface 331 of the second standard part 230 is vacant. In the subsequent use process, according to actual needs, the third connection interface 331 of the second standard part 230 can be connected in series with the corresponding spectrometer 100. Through the above settings, distributed network construction and gradual capacity expansion are realized, which is conducive to reducing the initial network construction cost of customers.

FIG3 is a structural diagram of a spectroscopic device 100 provided in an embodiment of the present application. As shown in FIG3 , the spectroscopic device 100 includes a box body 10. The structure of the box body 10 can be set according to actual needs. For example, the box body 10 can be roughly a hexahedral structure. The present embodiment of the application does not specifically limit the structure and material of the box body 10.

In some embodiments, the box body 10 may include a bottom wall 101 and a side wall 102, the side wall 102 is arranged around the edge of the bottom wall 101, and the bottom wall 101 is connected to the side wall 102. For example, the bottom wall 101 may be substantially a rectangular flat plate, and the side wall 102 may include a first side wall 1021, a second side wall 1022, a third side wall 1023, and a fourth side wall 1024 respectively connected to the edges of different sides of the bottom wall 101, wherein the first side wall 1021 and the second side wall 1022 are arranged opposite to each other, and the third side wall 1023 and the fourth side wall 1024 are arranged opposite to each other; the second side wall 1022 is located between the first side wall 1021 and the third side wall 1023, and is respectively connected to the first side wall 1021 and the third side wall 1023; the fourth side wall 1024 is located between the first side wall 1021 and the third side wall 1023, and is respectively connected to the first side wall 1021 and the third side wall 1023.

The side wall 102 may further include a first through hole 1031, a second through hole 1032, and at least one third through hole 1033. For example, the first through hole 1031 may penetrate the second side wall 1022, the second through hole 1032 may penetrate the fourth side wall 1024, and the third through hole 1033 may penetrate the third side wall 1023. Of course, the positions and diameters of the first through hole 1031, the second through hole 1032, and the third through hole 1033, as well as the number of the third through holes 1033, may also be set according to actual needs, and the embodiment of the present application is not limited thereto.

As described in the above embodiment, the optical splitting device 100 further includes a first connection interface 311, a second connection interface 321 and at least one third connection interface 331. Among them, at least part of the first connection interface 311, the second connection interface 321 and the third connection interface 331 are exposed outside the box body 10. In some embodiments, the first connection interface 311 can be inserted into the first through hole 1031; the second connection interface 321 can be inserted into the first through hole 1031; The connection interface 321 may be inserted into the second through hole 1032 ; the number of the third connection interfaces 331 is the same as the number of the third through holes 1033 , and one third connection interface 331 is inserted into one third through hole 1033 .

FIG4 is a structural diagram of a spectrometer 91 in some embodiments of the related art; FIG5 is a structural diagram of a spectrometer box 92 in some embodiments of the related art. As shown in FIG4 and FIG5, the spectrometer 91 may include a fiber body 911, and the fiber body 911 includes an input port 912 and two output ports 913. The spectrometer box 92 includes a box body 921, and three adapter interfaces 922 are provided on the box body 921. The spectrometer 91 is installed in the box body 921, so that the spectrometer 91 and the box body 921 together constitute the spectrometer box 92. Among them, an input port 912 and two output ports 913 of the spectrometer 91 are respectively connected to the corresponding adapter interfaces 922, and connected to other devices through the adapter interfaces 922. In the related art, when the splitter 91 is installed in the box body 10, due to the long length of the optical fiber body 911, it is necessary to manually coil the optical fiber body 911 in the box body 921, and it is also necessary to manually connect one input port 912 and two output ports 913 to the corresponding adapter interfaces 922 respectively. The assembly process is time-consuming and labor-intensive, and the assembly efficiency is reduced.

Fig. 6 is a structural diagram of another spectroscopic device 100 provided in an embodiment of the present application, and Fig. 7 is a cross-sectional view of another spectroscopic device 100 provided in an embodiment of the present application. Continuing to refer to Fig. 6 and Fig. 7, based on this, the spectroscopic device 100 provided in an embodiment of the present application further includes a spectroscopic unit 20, which is located in the box body 10.

The spectrometer 20 includes a substrate 21 and a spectroscopic waveguide 23. The spectroscopic waveguide 23 is located on the substrate 21, and the spectroscopic waveguide 23 includes an input end 221, a first output end 222, and at least one second output end 223. For example, four second output ends 223 may be provided in FIG. 3, and one second output end 223 may be provided in FIG. 7. The embodiment of the present application does not limit the number of second output ends 223. In some embodiments, the substrate 21 may be provided on the bottom wall 101 of the box body 10. The spectroscopic waveguide 23 may be roughly in the shape of a tree branch, and the spectroscopic waveguide 23 extends along the plane of the substrate 21. Among them, the spectroscopic waveguide 23 may be formed on the substrate 21 by an ion exchange process. Of course, the spectroscopic waveguide 23 may also be manufactured by other processes. The embodiment of the present application does not limit the manufacturing process of the spectroscopic waveguide 23. Through the above configuration, the input end 221 of the splitter waveguide 23 is used to receive the optical signal, and the optical signal is distributed to the first output end 222 and the second output end 223 through the splitter waveguide 23 and transmitted through the first output end 222 and the second output end 223 .

The optical splitter 100 further includes a first connection portion 31, wherein the first connection portion 31 includes a first connection interface 311 and a first connection core 312, one end of the first connection core 312 is connected to the input end 221, and the other end of the first connection core 312 is connected to the first connection interface 311. Through the above arrangement, the first connection interface 311 can be connected to the input end 221 of the optical splitter 20 through the first connection core 312, so that the optical signal received by the first connection interface 311 can be transmitted to the input end 221 of the optical splitter 20 through the first connection core 312. As described in the above embodiment, at least part of the first connection interface 311 is exposed outside the box body 10. For example, the first connection interface 311 can be penetrated in the first through hole 1031, and the first connection interface 311 can be sealed and connected to the first through hole 1031, so that the optical splitter 100 can be connected to other devices outside the shell through the first connection interface 311, and at the same time, it is beneficial to improve the protective effect of the box body 10 on its internal structure and extend the service life of the optical splitter 100.

The optical splitter 100 further includes a second connection part 32, wherein the second connection part 32 includes a second connection interface 321 and a second connection core 322, one end of the second connection core 322 is connected to the first output end 222, and the other end of the second connection core 322 is connected to the second connection interface 321. Through the above configuration, the second connection interface 321 can be connected to the first output end 222 of the optical splitter 20 through the second connection core 322, so that the optical signal received by the first output end 222 of the optical splitter 20 can be transmitted to the second connection interface 321 through the second connection core 322. As described in the above embodiments, since at least part of the second connection interface 321 is exposed outside the box body 10. In some embodiments, the second connection interface 321 can be penetrated in the second through hole 1032, and the second connection interface 321 can be sealed and connected to the second through hole 1032, so that the optical splitter 100 can be connected to other devices outside the shell through the second connection interface 321, and at the same time, it is beneficial to improve the protective effect of the box body 10 on its internal structure and extend the service life of the optical splitter 100.

The spectroscopic device 100 further includes a third connection portion 33, wherein one third connection portion 33 is disposed correspondingly to one second output terminal 223. Here, "correspondingly disposed" means that the number of the third connection portions 33 may be less than the number of the second output terminals 223, so that one third connection portion 33 is disposed correspondingly to one second output terminal 223; or the number of the third connection portions 33 is the same as the number of the second output terminals 223, so that the third connection portions 33 are disposed correspondingly to the second output terminals 223 one by one.

The third connection part 33 includes a third connection interface 331 and a third connection fiber core 332, one end of the third connection fiber core 332 is connected to the second output end 223, and the other end of the third connection fiber core 332 is connected to the third connection interface 331. Through the above configuration, the third connection interface 331 can be connected to the second output end 223 of the splitter 20 through the third connection fiber core 332, so that the optical signal received by the second output end 223 of the splitter 20 can be transmitted to the third connection interface 331 through the third connection fiber core 332. As described in the above embodiment, since at least part of the third connection interface 331 is exposed outside the box body 10. For example, the third connection interface 331 can be penetrated in the third through hole 1033, and the third connection interface 331 can be sealed and connected to the third through hole 1033, so that the splitter device 100 It can be connected to other devices outside the housing through the third connection interface 331 , which is beneficial to improving the protective effect of the box body 10 on its internal structure and extending the service life of the spectrometer 100 .

In the embodiment of the present application, the number of the third connection parts 33 in the spectrometer 100 is not limited. Since one third connection part 33 is correspondingly arranged with one third connection interface 331, as described in the above embodiment, when the number of the third connection parts 33 is one, the spectrometer 100 is a spectrometer with a splitting ratio of 1:2; when the number of the third connection parts 33 is seven, the spectrometer 100 is a spectrometer with a splitting ratio of 1:7. In some examples, as shown in FIG2, when the spectrometer 100 is a standard part 230, the standard part 230 can be configured so that the number of the third connection parts 33 is N. Wherein, N can be a positive integer greater than or equal to 1 and less than or equal to 3. For example, the number of the third connection parts 33 in the standard part 230 is 1, that is, the number of the third connection parts 33 of the spectrometer 100 is 1, and the spectrometer 100 is a spectrometer with a splitting ratio of 1:2.

In summary, the spectrometer 100 provided in the embodiment of the present application includes a box body 10, a spectrometer 20, a first connection part 31, a second connection part 32 and at least one third connection part 33. The spectrometer 20 is located in the box body 10; the spectrometer 20 includes a substrate 21 and a spectrometer waveguide 23, the spectrometer waveguide 23 is located on the substrate 21, and the spectrometer waveguide 23 includes an input end 221, a first output end 222 and at least one second output end 223. Through the above arrangement, the input end 221 of the spectrometer waveguide 23 can receive an optical signal, and the optical signal is distributed to the first output end 222 and the second output end 223 through the spectrometer waveguide 23, and is transmitted through the first output end 222 and the second output end 223. On this basis, the first connection part 31 includes a first connection interface 311 and a first connection core 312, one end of the first connection core 312 is connected to the input end 221, and the other end of the first connection core 312 is connected to the first connection interface 311; at least part of the first connection interface 311 is exposed outside the box body 10. The second connection part 32 includes a second connection interface 321 and a second connection core 322, one end of the second connection core 322 is connected to the first output end 222, and the other end of the second connection core 322 is connected to the second connection interface 321; at least part of the second connection interface 321 is exposed outside the box body 10. A third connection part 33 is arranged corresponding to a second output end 223, and the third connection part 33 includes a third connection interface 331 and a third connection core 332, one end of the third connection core 332 is connected to the second output end 223, and the other end of the third connection core 332 is connected to the third connection interface 331; at least part of the third connection interface 331 is exposed outside the box body 10.

Through the above arrangement, the first connection interface 311 can receive the optical signal and transmit the received optical signal to the input end 221 of the splitting waveguide 23. After the optical signal is distributed by the splitting waveguide 23, it is transmitted from the first output end 222 of the splitting waveguide 23 to the second connection interface 321, and from the second output end 223 of the splitting waveguide 23 to the third connection interface 331, thereby realizing the effect of redistributing the optical signal of the splitting device 100. Compared with the related art, in which the optical fiber is manually coiled to realize the regular arrangement of the optical fiber in the box body 10, the embodiment of the present application is conducive to improving the regularity of the splitting path in the splitting device 100 by setting the splitting part 20, saving manpower; on this basis, the present application can realize the integrated production of the splitting device 100 by setting the first connection part 31, the second connection part 32 and at least one third connection part 33, avoiding the use of manual assembly of the splitter into the box body 10, which is conducive to further saving manpower and improving the assembly efficiency of the splitting device 100.

At the same time, through the above configuration, there is no need to reserve space for winding and laying optical fibers, thereby improving the utilization rate of the internal space of the box body 10, which is conducive to miniaturization of the optical splitter 100 and expanding the use scenarios of the optical splitter 100. For example, the miniaturized optical splitter 100 can be used in scenarios where a micro optical splitter is required, such as fiber to the room (FTTR) and fiber to the mobile (FTTM).

7 , the structure of the light splitting unit 20 is briefly described below. For example, the light splitting unit 20 may be a PLC (Planar Lightwave Circuit) chip.

The light splitting waveguide 23 may include a main section 231 and a branch section 232. The main section 231 may include at least two first sub-sections 2311 and at least one second sub-section 2312; the first sub-sections 2311 and the second sub-sections 2312 are alternately connected, and the extension direction of at least two first sub-sections 2311 is the same; the head end of the first first sub-section 2311 is the input end 221 of the light splitting waveguide 23, and the tail end of the last first sub-section 2311 is the first output end 222 of the light splitting waveguide 23. Exemplarily, the left end of the first sub-segment 2311 in the illustrated position may be the head end of the first sub-segment 2311, and the right end of the first sub-segment 2311 in the illustrated position may be the tail end of the first sub-segment 2311; among the multiple first sub-segments 2311, the first first sub-segment 2311 may be the leftmost first sub-segment 2311 in the illustrated position, and the last first sub-segment 2311 may be the rightmost first sub-segment 2311 in the illustrated position; the angle between the first sub-segment 2311 and the second sub-segment 2312 connected to the tail end thereof may be an obtuse angle. Through the above arrangement, part of the optical signal received by the input end 221 may be transmitted to the first output end 222 through the alternately connected first sub-segments 2311 and the second sub-segments 2312.

The branch section 232 can be connected to the tail end of the first sub-section 2311, and the tail end of the branch section 232 is the second output end 223 of the splitter waveguide 23. Through the above configuration, the splitter waveguide 23 can receive the optical signal through the input end 221 and distribute the optical signal to the first output end 223. The first output terminal 222 and the second output terminal 223 are transmitted through the first output terminal 222 and the second output terminal 223.

Continuing to refer to FIG. 7 and in combination with FIG. 3 , in some examples, the number of branch segments 232 may be at least one, and one branch segment 232 may be provided corresponding to one second output terminal 223. The branch segment 232 may further include a third sub-segment 2321 and a fourth sub-segment 2322. One third sub-segment 2321 corresponds to one second sub-segment 2312; the third sub-segment 2321 and the corresponding second sub-segment 2312 are connected to the tail end of the same first sub-segment 2311. Here, the corresponding one third sub-segment 2321 and one second sub-segment 2312 means that the third sub-segment 2321 and the second sub-segment 2312 connected to the tail end of the same first sub-segment 2311 are corresponding. Exemplarily, the angle between the first sub-segment 2311 and the third sub-segment 2321 connected to the tail end thereof may be an obtuse angle, and the angle between the third sub-segment 2321 and the corresponding second sub-segment 2312 may be an acute angle. The head end of the fourth sub-segment 2322 is connected to the third sub-segment 2321; the tail end of the fourth sub-segment 2322 is the second output end 223 of the light splitting waveguide 23. Exemplarily, the extension direction of the fourth sub-segment 2322 may be perpendicular to the extension direction of the first sub-segment 2311, the upper end of the fourth sub-segment 2322 in the illustrated position may be the head end of the fourth sub-segment 2322, and the lower end of the fourth sub-segment 2322 in the illustrated position may be the tail end of the fourth sub-segment 2322.

Through the above configuration, the optical signal received by the input end 221 can be distributed after being transmitted through at least one first sub-segment 2311: a part of the optical signal is distributed to the corresponding third sub-segment 2321, and further transmitted to the fourth sub-segment 2322, and then transmitted to the corresponding second output end 223; another part of the optical signal is distributed to the corresponding second sub-segment 2312, and continues to be transmitted through the first sub-segment 2311 of the next level, and is distributed again... In summary, the optical splitting waveguide 23 can receive the optical signal through the input end 221, distribute the optical signal to the first output end 222 and the second output end 223, and transmit it out through the first output end 222 and the second output end 223.

FIG8 is a structural diagram of a light splitting unit provided in an embodiment of the present application. Continuing to refer to FIG8, in some other examples, the branch segment 232 includes at least one connecting segment 2324 and at least one branch sub-segment 2323. The connecting segment 2324 includes a first connecting sub-segment 2324a and two second connecting sub-segments 2324b, and the head end of the second connecting sub-segment 2324b is connected to the tail end of the first connecting sub-segment 2324a. Exemplarily, the left end of the first connecting sub-segment 2324a in the illustrated position is the head end of the first connecting sub-segment 2324a, and the right end of the first connecting sub-segment 2324a in the illustrated position is the tail end of the first connecting sub-segment 2324a; the left end of the second connecting sub-segment 2324b in the illustrated position is the head end of the second connecting sub-segment 2324b, and the right end of the second connecting sub-segment 2324b in the illustrated position is the tail end of the second connecting sub-segment 2324b.

In two adjacent connecting segments 2324, the head end of the first connecting sub-segment 2324a of one connecting segment 2324 is connected to the tail end of the second connecting sub-segment 2324b of the other connecting segment 2324, the head end of the first connecting sub-segment 2324a of the first connecting segment 2324 is connected to the tail end of the first sub-segment 2311, and the tail end of the second connecting sub-segment 2324b of the last connecting segment 2324 is connected to the head end of the branch sub-segment 2323, and the tail end of the branch sub-segment 2323 is the second output end 223 of the splitter waveguide 23.

Exemplarily, the branch sub-segment 2323 may include a first branch segment 2323a and a second branch segment 2323b, wherein the head end of the second branch segment 2323b is connected to the tail end of the first branch segment 2323a; the head end of the first branch segment 2323a is the head end of the branch sub-segment 2323, and the tail end of the second branch segment 2323b is the second output end 223 of the splitting waveguide 23. Exemplarily, the left end of the first branch segment 2323a in the illustrated position may be the head end of the first branch segment 2323a, and the right end of the first branch segment 2323a in the illustrated position may be the tail end of the first branch segment 2323a; the left end of the second branch segment 2323b in the illustrated position may be the head end of the second branch segment 2323b, and the right end of the second branch segment 2323b in the illustrated position may be the tail end of the second branch segment 2323b.

Through the above configuration, the optical signal received by the input end 221 can be distributed after being transmitted through a first sub-segment 2311: a part of the optical signal is distributed to the connecting segment 2324, and further transmitted to the corresponding branch sub-segment 2323, and then transmitted to the corresponding second output end 223; another part of the optical signal is distributed to the second sub-segment 2312, and continues to be transmitted to the first output end 222 through the first sub-segment 2311 of the next level. In summary, the optical splitting waveguide 23 can receive the optical signal through the input end 221, distribute the optical signal to the first output end 222 and the second output end 223, and transmit it out through the first output end 222 and the second output end 223.

In the embodiment of the present application, the arrangement shape of the light splitting waveguide 23 in the light splitting unit 20 may not be limited to the two types shown in FIG. 7 and FIG. 8 , and the embodiment of the present application does not limit this.

For ease of description, the first connecting fiber core 312 , the second connecting fiber core 322 , and the third connecting fiber core 332 are all referred to as connecting fiber cores hereinafter.

7, the substrate 21 may further include a core installation groove 24, and at least one of the first connecting fiber core 312, the second connecting fiber core 322, and the third connecting fiber core 332 is located in the core installation groove 24. Exemplarily, the number of the core installation grooves 24 may be multiple, and the core installation grooves 24 may include a first installation groove 241, a second installation groove 242, and at least one third installation groove 243. The end of the first installation groove 241 in the plurality of first sub-segments 2311 is directly opposite to the head end of the first first sub-segment 2311, and the first connecting fiber core 312 can be located in the first installation groove 241, so that the first connecting fiber core 312 contacts the head end of the first first sub-segment 2311; the end of the second installation groove 242 is directly opposite to the tail end of the last first sub-segment 2311, and the second connecting fiber core 322 can be located in the second installation groove 242, so that the second connecting fiber core 322 contacts the tail end of the last first sub-segment 2311; the end of the third installation groove 243 is directly opposite to the tail end of the fourth sub-segment 2322, and the third connecting fiber core 332 can be located in the third installation groove 243, so that the third connecting fiber core 332 contacts the tail end of the fourth sub-segment 2322. Through the above arrangement, the connecting fiber core is aligned with the splitting waveguide 23, so that the optical signal is transmitted between the connecting fiber core and the splitting waveguide 23.

FIG9 is a cross-sectional view of the spectrometer 100 along the A-A section line in FIG7 . As shown in FIG9 , in some embodiments, the core installation groove 24 may include a first side surface 2411 and a second side surface 2413 opposite to each other, and the first side surface 2411 and the second side surface 2413 are adjacent to each other and intersect each other. For example, the first side surface 2411 may be adjacent to the surface of the substrate 21, and the second side surface 2413 may also be adjacent to the surface of the substrate 21. Since the first side surface 2411 and the second side surface 2413 are adjacent to each other and the first side surface 2411 and the second side surface 2413 intersect each other, the groove formed by the first side surface 2411 and the second side surface 2413 is the core installation groove 24. The size of the angle between the first side surface 2411 and the second side surface 2413 in the embodiment of the present application is not limited and can be set according to actual needs. The above arrangement is helpful to reduce the difficulty of manufacturing the core installation groove 24 and improve the manufacturing efficiency of the light splitter 20 ; meanwhile, it is helpful to form the light splitter waveguide 23 in the core installation groove 24 later, further reducing the manufacturing efficiency of the light splitter 20 .

As shown in FIGS. 7 and 9 , at least one of the first connecting fiber core 312, the second connecting fiber core 322, and the third connecting fiber core 332 can be connected to the first side surface 2411 and the second side surface 2413 at the same time. Exemplarily, one end of the connecting fiber core facing the light splitting portion 20 can be located in the fiber core installation groove 24 and contact the light splitting waveguide 23, so that the connecting fiber core and the light splitting waveguide 23 are connected. Exemplarily, the connecting fiber core can be connected to the first side surface 2411 and the second side surface 2413 at the same time. For example, the connecting fiber core can be bonded to the first side surface 2411 and the second side surface 2413 at the same time by adhesive 26, so as to fix the connecting fiber core in the fiber core installation groove 24. Through the above arrangement, the connecting fiber core in the fiber core installation groove 24 is aligned with the light splitting waveguide 23, so as to facilitate the transmission of optical signals between the connecting fiber core in the fiber core installation groove 24 and the light splitting waveguide 23.

Of course, the fiber core installation groove 24 may also include other structures, which will not be described in detail in the embodiment of the present application.

The structures of the first connection portion 31 , the second connection portion 32 and the third connection portion 33 are briefly described below.

In some embodiments, the first connecting fiber core 312, the second connecting fiber core 322 and the third connecting fiber core 332 may be mounted on the bottom wall 101 and the substrate 21. The extending direction of the first connecting fiber core 312 and the second connecting fiber core 322 may be the same as the extending direction of the first sub-segment 2311, and the extending direction of the third connecting fiber core 332 may be the same as the extending direction of the fourth sub-segment 2322. In some embodiments, adhesive 26 can be printed at corresponding positions (for example, a screen can be placed on the substrate 21 and the box body 10, and an opening is opened on the screen, and the opening exposes part of the substrate 21 and the box body 10. By applying hot melt adhesive on the screen, part of the hot melt adhesive can be bonded to the substrate 21 and the box body 10 through the opening on the screen), and then the first connecting fiber core 312, the second connecting fiber core 322 and the third connecting fiber core 332 are mounted on the adhesive 26 through corresponding automated equipment, so that the first connecting fiber core 312, the second connecting fiber core 322 and the third connecting fiber core 332 are mounted at corresponding positions. Through the above-mentioned arrangement, compared with the related art that requires manual winding and laying of optical fibers, the embodiment of the present application can reduce manpower by mounting the first connecting fiber core 312, the second connecting fiber core 322 and the third connecting fiber core 332 on the bottom wall 101, which is beneficial to improve the degree of automation in the assembly process of the spectrometer 100 and improve the assembly efficiency of the spectrometer 100.

At the same time, the embodiment of the present application, by mounting the first connecting fiber core 312, the second connecting fiber core 322 and the third connecting fiber core 332 on the bottom wall 101, is also beneficial to improving the production consistency of the spectrometer 100, further improving the assembly efficiency of the spectrometer 100, and reducing production costs.

Fig. 10 is a structural diagram of another spectroscopic device 100 provided in an embodiment of the present application; Fig. 11 is a cross-sectional view of another spectroscopic device 100 provided in an embodiment of the present application. Referring to Figs. 10 and 11 , for ease of description, the first connecting portion 31, the second connecting portion 32, and the third connecting portion 33 are all referred to as connecting portions 30 hereinafter.

Exemplarily, at least one of the first connection part 31, the second connection part 32 and the third connection part 33 is configured to: also include a protective cover 34. The protective cover 34 can be mounted on the outside of the connecting fiber core of the connection part 30. In some embodiments, the protective cover 34 can include a first protective cover 313, and the first protective cover 313 can be mounted on the outside of the first connecting fiber core 312; in some embodiments, the protective cover 34 can also include a second protective cover 323, and the second protective cover 323 can be mounted on the outside of the second connecting fiber core 322; in some embodiments, the protective cover 34 can also include at least one third protective cover 343, and a third protective cover 343 can be mounted on the outside of a third connecting fiber core 332. Through the above-mentioned configuration, the protective cover 34 can play a protective role, which is beneficial to avoid the connection inside it. The fiber core is damaged, which is beneficial to prolonging the service life of the light splitting device 100.

Continuing to refer to FIG. 10 and FIG. 11 , the protective cover 34 includes a second protective cover 323, and the second connecting fiber core 322 can be inserted into the second through hole 1032, the second protective cover 323 can be inserted into the second through hole 1032, and the second protective cover 323 can be sealed and connected to the second through hole 1032, which is beneficial to improve the protective effect of the housing on its internal structure and extend the service life of the spectrometer 100. As described in the above embodiment, the second connection interface 321 can be used for cascading with other devices. Through the above setting, it is beneficial to expand the range of activities of the second connection interface 321, facilitate the connection of the second connection interface 321 with other devices, and improve the practicality of the device.

In some embodiments, the connecting fiber core in the protective cover 34 may include a bend 36. Exemplarily, there may be a gap between the protective cover 34 and the connecting fiber core, and the connecting fiber core may be bent in the protective cover 34, so that the connecting fiber core exposed outside the protective cover 34 has a suitable length, and the connecting fiber core exposed outside the protective cover 34 is arranged in the fiber core installation groove 24. In this embodiment, the number of bends 36 of the connecting fiber core is not limited, and the connecting fiber core may include one bend 36 or multiple bends 36. Through the above arrangement, the regularity of the optical fiber layout inside the box body 10 can be further improved; at the same time, it is also beneficial to improve the production consistency of the spectrometer 100 and further improve the assembly efficiency of the spectrometer 100.

In some embodiments, at least one of the first connection interface 311, the second connection interface 321, and the third connection interface 331 may be a fiber optic adapter. The fiber optic adapter is a centering connection component of a fiber optic active connector. Exemplarily, the adapter may include an adapter body, the adapter body is provided with a ferrule 35, the ferrule 35 may be, for example, a ceramic ferrule 35, and the end of the connecting fiber core away from the light splitting part 20 may be inserted into the ferrule 35 to connect the connecting fiber core to the adapter. Through the above arrangement, the connection between the connecting fiber core and other optical fibers can be achieved to ensure the highest connection performance. For example, the fiber optic adapter may include an SC fiber optic adapter, an FC fiber optic adapter, an LC fiber optic adapter, and the like, and the embodiment of the present application does not specifically limit the type of the fiber optic adapter.

The installation process of the connection part 30 is briefly described below: the installation process of the first connection part 31 includes: connecting the first connection fiber core 312 with the first connection interface 311 to form the first connection part 31; after the first connection part 31 is formed, the first connection part 31 is mounted at a corresponding position using a mounting device: for example, the first connection fiber core 312 can be located in the first mounting groove 241; and the first connection interface 311 is located in the first through hole 1031. The installation process of the second connection part 32 includes: connecting the second connection fiber core 322 with the second connection interface 321 to form the second connection part 32; after the second connection part 32 is formed, the second connection part 32 is mounted at a corresponding position using a mounting device: for example, the second connection fiber core 322 can be located in the second mounting groove 242; and the second protective cover 323 is located in the second through hole 1032. The installation process of the third connection part 33 includes: connecting the third connection fiber core 332 with the third connection interface 331 to form the third connection part 33; after the third connection part 33 is formed, using a mounting device to mount the third connection part 33 at a corresponding position: for example, the third connection fiber core 332 can be located in the corresponding third mounting groove 243; and the third connection interface 331 is located in the third through hole 1033.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A spectroscopic device (100), characterized by comprising:

Box body (10);

a light splitting unit (20) located in the box body (10); and

A first connecting portion (31), a second connecting portion (32) and at least one third connecting portion (33) mounted on the box body (10);

The light splitting unit (20) comprises a substrate (21) and a light splitting waveguide (23), wherein the light splitting waveguide (23) is located on the substrate (21), and the light splitting waveguide (23) comprises an input end (221), a first output end (222), and at least one second output end (223);

The first connection portion (31) comprises a first connection interface (311) and a first connection fiber core (312); one end of the first connection fiber core (312) is connected to the input end (221), and the other end is connected to the first connection interface (311); at least part of the first connection interface (311) is exposed outside the box body (10);

The second connection portion (32) comprises a second connection interface (321) and a second connection fiber core (322); one end of the second connection fiber core (322) is connected to the first output end (222), and the other end is connected to the second connection interface (321); at least part of the second connection interface (321) is exposed outside the box body (10);

The third connection portion (33) comprises a third connection interface (331) and a third connection fiber core (332); one end of the third connection fiber core (332) is connected to the second output end (223), and the other end is connected to the third connection interface (331); at least part of the third connection interface (331) is exposed outside the box body (10).
The spectrometer (100) according to claim 1 is characterized in that the substrate (21) includes a core mounting groove (24), and at least one of the first connecting fiber core (312), the second connecting fiber core (322) and the third connecting fiber core (332) is located in the core mounting groove (24).
The optical splitter (100) according to claim 2, characterized in that the fiber core installation groove (24) comprises a first side surface (2411) and a second side surface (2413) opposite to each other, the first side surface (2411) and the second side surface (2413) are adjacent to each other, and the first side surface (2411) and the second side surface (2413) intersect each other;

At least one of the first connecting fiber core (312), the second connecting fiber core (322), and the third connecting fiber core (332) is connected to the first side surface (2411) and the second side surface (2413) at the same time.
The light splitting device (100) according to any one of claims 1 to 3, characterized in that the light splitting waveguide (23) comprises a main section (231) and a branch section (232);

The main body segment (231) comprises at least two first sub-segments (2311) and at least one second sub-segment (2312); the first sub-segments (2311) and the second sub-segments (2312) are alternately connected, and the at least two first sub-segments (2311) extend in the same direction; the head end of the first of the first sub-segments (2311) is the input end (221) of the splitting waveguide (23), and the tail end of the last of the first sub-segments (2311) is the first output end (222) of the splitting waveguide (23);

The branch segment (232) is connected to the tail end of the first sub-segment (2311), and the tail end of the branch segment (232) is the second output end (223) of the light splitting waveguide (23).
The light splitting device (100) according to claim 4, characterized in that the number of the branch segments (232) is at least one;

The branch segment (232) comprises a third sub-segment (2321) and a fourth sub-segment (2322); one of the third sub-segments (2321) corresponds to one of the second sub-segments (2312); the third sub-segment (2321) and the corresponding second sub-segment (2312) are connected to the tail end of the same first sub-segment (2311); the head end of the fourth sub-segment (2322) is connected to the head end of the third sub-segment (2321); the tail end of the fourth sub-segment (2322) is the second output end (223) of the optical splitting waveguide (23).
The light splitting device (100) according to claim 4, characterized in that the number of the branch segment (232) is one;

The branch segment (232) includes at least one connecting segment (2324) and at least one branch sub-segment (2323), the connecting segment (2324) includes a first connecting sub-segment (2324a) and two second connecting sub-segments (2324b), the head end of the second connecting sub-segment (2324b) is connected to the tail end of the first connecting sub-segment (2324a); in two adjacent connecting segments (2324), the head end of the first connecting sub-segment (2324a) of one of the connecting segments (2324) is connected to the tail end of the first connecting sub-segment (2324a). The tail end of the second connecting sub-segment (2324b) is connected to another connecting segment (2324), the head end of the first connecting sub-segment (2324a) of the first connecting segment (2324) is connected to the tail end of the first sub-segment (2311), and the tail end of the second connecting sub-segment (2324b) of the last connecting segment (2324) is connected to the head end of the branch sub-segment (2323); the tail end of the branch sub-segment (2323) is the second output end (223) of the splitter waveguide (23).
The spectroscopic device (100) according to any one of claims 1 to 6, characterized in that the first connecting portion (31), At least one of the second connecting portion (32) and the third connecting portion (33) is configured to: further include a protective cover (34);

The protective sleeve (34) is sleeved outside the connecting fiber core of the connecting portion (30).
The optical splitter (100) according to claim 7, characterized in that the connecting fiber core in the protective sleeve (34) includes a bent portion (36).
The spectroscopic device (100) according to any one of claims 1 to 8, characterized in that the box body (10) comprises a first through hole (1031), a second through hole (1032) and at least one third through hole (1033) penetrating therethrough;

The first connecting fiber core (312), the second connecting fiber core (322) and the third connecting fiber core (332) are all mounted on the box body (10) and the substrate (21); the first connecting interface (311) is penetrated in the first through hole (1031); one of the third connecting parts (33) is correspondingly arranged with one of the third through holes (1033), and one of the third connecting interfaces (331) is penetrated in one of the third through holes (1033); the second connecting fiber core (322) is penetrated in the second through hole (1032).
The optical splitting device (100) according to any one of claims 1 to 9, characterized in that at least one of the first connection interface (311), the second connection interface (321), and the third connection interface (331) is a fiber optic adapter.
A light splitting component (1000), characterized in that it comprises a plurality of light splitting devices (100), wherein the plurality of light splitting devices (100) comprise a first light splitting device (220) and a second light splitting device (210) connected in series, and both the first light splitting device (220) and the second light splitting device (210) are the light splitting devices (100) according to any one of claims 1 to 10;

The second connection interface (321) or the third connection interface (331) of the first light splitting device (220) is connected to the first connection interface (311) of the second light splitting device (210).
The optical splitter component (1000) according to claim 11 is characterized in that at least part of the multiple optical splitter devices (100) are standard parts (230), and the standard parts (230) are configured so that the number of the third connection interfaces (331) is a positive integer greater than or equal to 1.