WO2024021916A1

WO2024021916A1 - Visible light emitting apparatus, optical communication device, and optical communication system

Info

Publication number: WO2024021916A1
Application number: PCT/CN2023/100451
Authority: WO
Inventors: 刘霖瑜; 周恩宇; 徐爱民
Original assignee: 华为技术有限公司
Priority date: 2022-07-28
Filing date: 2023-06-15
Publication date: 2024-02-01
Also published as: CN218301392U

Abstract

Disclosed in the present application are a visible light emitting apparatus, an optical communication device, and an optical communication system. In practical application, visual management is achieved, thereby improving maintenance efficiency. Specifically, the optical communication device comprises: an optical transmission apparatus and the visible light emitting apparatus. The visible light emitting apparatus comprises a housing, a light inlet, and a light outlet, the light inlet and the light outlet being formed on the housing. The light inlet is connected to an optical interface of the optical transmission apparatus, and the light outlet is used for connecting to a first optical fiber. The optical transmission apparatus is used for outputting an optical signal to the visible light emitting apparatus by means of the optical interface. The visible light emitting apparatus is used for generating visible light and coupling the optical signal and the visible light to the first optical fiber. That is, a visible light emitting apparatus is externally connected to the optical transmission apparatus, the interior of the optical transmission apparatus does not need to be transformed, and a beam of visible light and an optical signal transmitted by the optical transmission apparatus are transmitted together in the optical fiber.

Description

Visible light emitting device, optical communication equipment and optical communication system

This application claims priority to the Chinese patent application submitted to the State Intellectual Property Office of China on July 28, 2022, with application number 202221971389.0 and the application title "A visible light emitting device, optical communication equipment and optical communication system", and its entire contents incorporated herein by reference.

Technical field

The present application relates to the field of optical communication, and in particular, to a visible light emitting device, optical communication equipment and an optical communication system.

Background technique

Passive optical network (PON) is an implementation technology of optical access network. PON is an optical access technology for point-to-multipoint transmission. The optical line terminal (optical line terminal, OLT) is connected to the upper network side equipment, and the lower layer is connected to one or more optical distribution networks (optical distribution network, ODN). ODN includes optical splitters for optical power distribution, backbone optical fibers connected between the optical splitters and OLTs, and branch optical fibers connected between the optical splitters and each optical network unit (ONU). When transmitting data downlink, the ODN transmits the downlink data from the OLT to each ONU through the optical splitter, and the ONU selectively receives the downlink data carrying its own identity. When transmitting data in the uplink, the ODN combines the optical signals sent by each ONU into one optical signal and transmits it to the OLT.

In practical applications, in order to better manage and maintain ODN, staff are usually required to use a red light pen to detect each branch fiber to determine whether there is fiber breakage. This method of operation requires staff to screen one by one, and the operation process is relatively cumbersome.

Contents of the invention

Embodiments of the present application provide a visible light emitting device, optical communication equipment and an optical communication system, which realize visual management and improve maintenance efficiency in practical applications.

In a first aspect, embodiments of the present application provide a visible light emitting device. The visible light emitting device includes: a casing, a light inlet and a light outlet, and the light inlet and the light outlet are arranged on the casing. The light inlet is used to connect the optical interface of the optical transmission device, and the light outlet is used to connect the first optical fiber. The optical signal output by the optical transmission device is input into the visible light emitting device through the light entrance port. The visible light emitting device is used to generate visible light and couple the optical signal and the visible light to the first optical fiber.

In this embodiment, it is equivalent to connecting an external visible light emitting device to the light transmission device, and there is no need to modify the interior of the light transmission device. The visible light emitting device can couple the visible light generated by itself and the optical signal from the light transmission device into the optical fiber. That is to say, a beam of visible light is provided to be transmitted together with the optical signal emitted by the optical transmission device in the optical fiber. Visual management has been realized in practical applications. As long as the staff can identify visible light from the optical fiber, they can judge that the optical fiber has not been broken. There is no need for staff to screen one by one through active detection, which improves maintenance efficiency. In addition, in addition to making it easy to determine whether the fiber is broken, workers can also determine whether the optical fiber is occupied by identifying visible light, so as to flexibly allocate idle optical fibers.

In some possible implementations, the visible light emitting device includes a first connector located at the light entrance, and the first connector is used to connect an optical interface of the optical transmission device. Alternatively, the visible light emitting device includes a second optical fiber, and the light entrance is used to connect the optical interface of the light transmission device through the second optical fiber. In this embodiment, multiple implementation methods for connecting the visible light emitting device and the optical transmission device are provided, so that this solution can be adapted to more application scenarios.

In some possible implementations, the visible light emitting device includes a power supply device and an electrical output port. The power supply device is located in the housing, and the electrical output port is provided on the housing. The electrical output port is used to connect the electrical interface of the optical transmission device. The power supply device is used to power the visible light emitting device and power the light transmission device through the electrical output port. In this embodiment, the visible light emitting device and the light transmission device can share the same power supply device for power supply, and the actual application effect is better.

In some possible implementations, the electrical output port is used to connect the electrical interface of the optical transmission device through the power supply line. In this embodiment, a specific implementation of connecting the power supply device to the optical transmission device is provided, which enhances the practicability of this solution.

In some possible implementations, the visible light emitting device includes a second connector located at the electrical output port. The second connector is used to connect the electrical interface of the optical transmission device, and the light entrance is used to connect the optical interface of the optical transmission device through the second optical fiber. In this implementation, another specific implementation of connecting the power supply device to the optical transmission device is provided, which enhances the flexibility of the solution.

In some possible implementations, the visible light emitting device further includes an electrical input port, the electrical input port is provided on the housing, and the electrical input port is used to connect the power adapter. The voltage output by the power adapter is input to the power supply device through the electrical input port, and the power supply device is used to distribute the voltage to the visible light emitting device and the light transmission device.

In some possible implementations, the visible light emitting device further includes a battery, the battery is located in the housing, and the battery is used to power the visible light emitting device.

In some possible implementations, the visible light emitting device further includes an optical fiber connector, the optical fiber connector is located at the light outlet, and the optical fiber connector is used to connect the first optical fiber. In this embodiment, by arranging the optical fiber connector at the light outlet, it is more convenient to realize the connection with the first optical fiber.

In some possible implementations, the type of optical fiber connector is SC connector (subscriber connector), LC connector (lucent connector), FC connector (ferrule connector), ST (straight tip) connector, E2000 connector or MPO (multi-fiber pull off) connector.

In a second aspect, this application provides an optical communication device. The optical communication equipment includes: an optical transmission device and a visible light emitting device. The visible light emitting device includes a casing, a light inlet and a light outlet, and the light inlet and the light outlet are arranged on the casing. The light inlet is connected to the optical interface of the optical transmission device, and the light outlet is used to connect the first optical fiber. The optical transmission device is used to output optical signals to the visible light emitting device through the optical interface. The visible light emitting device is used to generate visible light and couple the optical signal and the visible light to the first optical fiber.

In some possible implementations, the visible light emitting device includes a first connector located at the light entrance, and the first connector is connected to the optical interface of the optical transmission device. Alternatively, the visible light emitting device includes a second optical fiber, and the light entrance is connected to the optical interface of the light transmission device through the second optical fiber.

In some possible implementations, the optical communication equipment further includes a power supply device. The power supply device is connected to the light transmission device and the visible light emitting device respectively. The power supply device is used to power the light transmission device and the visible light emitting device respectively.

In some possible implementations, the optical communication device further includes a power supply line, and the power supply device includes a second connector. The visible light emitting device also includes an electrical input port, which is provided on the housing. The second connector is connected to the electrical interface of the optical transmission device, and the power supply device is connected to the electrical input port through the power supply line.

In some possible implementations, the power supply device and the optical transmission device are detachably connected to facilitate flexible disassembly according to actual needs in applications.

In some possible implementations, the visible light emitting device includes a power supply device and an electrical output port. The power supply device is located in the housing. The electrical output port is provided on the housing. The electrical output port is connected to the electrical interface of the light transmission device. The power supply device is used to power the visible light emitting device and power the light transmission device through the electrical output port. Integrating the power supply device into the visible light emitting device is more conducive to miniaturization of optical communication equipment.

In some possible implementations, the optical communication equipment further includes a power supply line, and the electrical output port is connected to the electrical interface of the optical transmission device through the power supply line.

In some possible implementations, the visible light emitting device includes a second connector and a second optical fiber. The second connector is located at the electrical output port. The second connector is connected to the electrical interface of the optical transmission device. The light input port is connected through the second optical fiber. Optical interface of optical transmission device.

In some possible implementations, the optical communication device further includes a power adapter, and the power adapter is connected to the power supply device. The power adapter is used to output voltage to the power supply device, and the power supply device is used to distribute the voltage to the light transmission device and the visible light emitting device.

In some possible implementations, the visible light emitting device further includes an optical fiber connector, the optical fiber connector is located at the light outlet, and the optical fiber connector is used to connect the first optical fiber.

In some possible implementations, the type of fiber optic connector is SC connector, LC connector, FC connector, ST connector, E2000 connector or MPO connector.

In some possible implementations, the visible light emitting device and the light transmission device are detachably connected to facilitate flexible disassembly according to actual needs in applications.

In some possible implementations, the type of optical transmission device is an optical line terminal (optical line terminal, OLT) or an optical network unit (optical network unit, ONU).

In a third aspect, embodiments of the present application provide an optical communication system. The optical communication system includes: a first optical communication device and a second optical communication device, and the first optical communication device and the second optical communication device are connected through optical fibers. The first optical communication device and/or the second optical communication device are optical communication devices as described in any embodiment of the second aspect.

In some possible implementations, the optical transmission device in the first optical communication device is an OLT, and the optical transmission device in the second optical communication device is an ONU. The optical communication system includes N second optical communication devices. The optical communication system also includes an optical splitter, and N is an integer greater than 1. The optical splitter is used to split the downlink optical signals from the first optical communication equipment, and transmit the split N downlink optical signals to N second optical channels respectively. letter equipment. The optical splitter is used to combine N uplink optical signals respectively from N second optical communication devices, and transmit the combined uplink optical signals to the first optical communication device.

In the embodiment of the present application, a visible light emitting device for generating visible light is provided, and the light entrance of the light emitting device is connected to the optical interface of the light transmission device. It is equivalent to connecting an external visible light emitting device to the light transmission device, and there is no need to modify the interior of the light transmission device. The light emitting device can couple the visible light generated by itself and the optical signal from the light transmission device into the optical fiber. That is to say, a beam of visible light is provided to be transmitted together with the optical signal emitted by the optical transmission device in the optical fiber. Visual management has been realized in practical applications. As long as the staff can identify visible light from the optical fiber, they can judge that the optical fiber has not been broken. There is no need for staff to screen one by one through active detection, which improves maintenance efficiency. In addition, in addition to making it easy to determine whether the fiber is broken, workers can also determine whether the optical fiber is occupied by identifying visible light, so as to flexibly allocate idle optical fibers.

Description of drawings

Figure 1 is a schematic diagram of the system architecture of PON;

Figure 2 is a schematic structural diagram of the first optical communication device in the embodiment of the present application;

Figure 3 is a first structural schematic diagram of a visible light emitting device in an embodiment of the present application;

Figure 4(a) is a schematic structural diagram of the second visible light emitting device in the embodiment of the present application;

Figure 4(b) is a third structural schematic diagram of the visible light emitting device in the embodiment of the present application;

Figure 4(c) is a fourth structural schematic diagram of a visible light emitting device in an embodiment of the present application;

Figure 4(d) is a fifth structural schematic diagram of a visible light emitting device in an embodiment of the present application;

Figure 5 is a schematic structural diagram of the second optical communication device in the embodiment of the present application;

Figure 6 is a third structural schematic diagram of optical communication equipment in an embodiment of the present application;

Figure 7 is a fourth structural schematic diagram of optical communication equipment in an embodiment of the present application;

Figure 8 is a fifth structural schematic diagram of optical communication equipment in an embodiment of the present application;

Figure 9 is a schematic structural diagram of an optical communication system in an embodiment of the present application.

Detailed ways

Embodiments of the present application provide a visible light emitting device, optical communication equipment and an optical communication system, which realize visual management and improve maintenance efficiency in practical applications. It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, but do not limit a specific order or sequence. It is to be understood that the above terms are interchangeable under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those described herein. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units need not be limited to those steps or units that are expressly listed, but may include steps or units that are not expressly listed or that are not specific to the process, method, product, or device. Other steps or units inherent to the equipment.

This application is mainly used in optical communication scenarios, where optical communication scenarios include but are not limited to optical access and optical transmission scenarios. The following takes the passive optical network (PON) system as an example to introduce a possible optical communication scenario.

Figure 1 is a schematic diagram of the system architecture of PON. As shown in Figure 1, the optical line terminal (OLT) is connected to the upper network side equipment (such as switches, routers, etc.), and the lower layer is connected to one or more optical distribution networks (ODN). ODN includes passive optical splitters for optical power distribution, backbone optical fibers connected between passive optical splitters and OLTs, and optical fibers connected between passive optical splitters and optical network units (ONUs). Branch fiber. When transmitting data downlink, the ODN transmits the downlink data from the OLT to each ONU through the optical splitter, and the ONU selectively receives the downlink data carrying its own identity. When transmitting data in the uplink, the ODN combines the optical signals sent by N ONUs into one optical signal and transmits it to the OLT. If the ONU also provides user port functions, such as an ONU providing an Ethernet user port or a traditional telephone service (plain old telephone service, POTS) user port, it is called an optical network termination (ONT).

It should be noted that optical communication scenarios usually use optical signals in the invisible band for communication. To this end, this application provides a visible light emitting device, which can be externally connected to optical transmission devices such as OLT and ONU. The visible light generated by the visible light emitting device and the optical signal emitted by the optical transmission device can be coupled into the optical fiber and transmitted to the opposite end. On the basis of ensuring normal optical communication, visual management is also implemented. It should be understood that the optical communication equipment provided by this application includes the above-mentioned visible light emitting device and light transmission device, and the visible light emitting device and the light transmission device are detachably connected. The visible light emitting device and optical communication equipment provided by this application will be introduced in detail below.

Figure 2 is a schematic structural diagram of a first optical communication device in an embodiment of the present application. As shown in FIG. 2 , the optical communication equipment includes a visible light emitting device 10 and an optical transmission device 20 . One end of the visible light emitting device 10 is connected to the optical interface 201 of the optical transmission device 20 , and the other end of the visible light emitting device 10 is connected to the optical fiber 30 . Specifically, the optical transmission device 20 outputs an optical signal to the visible light emitting device 10 through the optical interface 201 . The visible light emitting device 10 is used to generate visible light and couple the optical signal and the visible light to the optical fiber 30 .

It should be noted that the optical transmission device 20 in this application represents a communication device integrated with an optical module. In addition to transmitting optical signals, the optical transmission device 20 is also used to receive optical signals. The types of the optical transmission device 20 include but are not Limited to OLT and ONU, etc. The optical signal in this application represents communication light that carries business information. For example, the wavelength band of the optical signal may be 1260nm-1600nm. The visible light in this application may be an unmodulated optical carrier or a modulated optical signal. For example, the wavelength band of visible light can be 360nm-800nm, and for example, the near-infrared light in the band 780nm-1100nm can also be used as visible light in this application. The coupling method by which the visible light emitting device 10 couples visible light and optical signals to the optical fiber 30 includes but is not limited to power division, wavelength division, polarization multiplexing, and other methods. The visible light emitting device 10 and the optical transmission device 20 are detachably connected. If the visible light emitting device 10 is detached, the optical interface 201 of the optical transmission device 20 can also be directly connected to the optical fiber 30 .

Figure 3 is a first structural schematic diagram of a visible light emitting device in an embodiment of the present application. As shown in FIG. 3 , the visible light emitting device 10 includes a housing 101 , a light entrance 102 and a light exit 103 . The light inlet 102 and the light outlet 103 are provided on the housing 101 . The light inlet 102 is used to connect to the optical interface 201 of the optical transmission device 20 , and the light outlet 103 is used to connect the optical fiber 30 . Specifically, the light inlet 102 represents an interface for light input, and the light outlet 103 represents an interface for light output. This application does not limit the specific design methods of the light inlet 102 and the light outlet 103 . It should be understood that this application does not limit the specific shape of the housing 101. For example, the housing 101 adopts a rectangular parallelepiped structure. It should also be understood that there are many ways to connect the light inlet 102 to the optical interface 201, and there are also many ways to connect the light outlet 103 to the optical fiber 30. Several possible implementations are introduced below.

Figure 4(a) is a schematic structural diagram of the second visible light emitting device in the embodiment of the present application. As shown in FIG. 4(a) , the visible light emitting device 10 includes a connector 104 and an optical fiber connector 105 . Among them, the connector 104 is located at the light inlet 102, and the optical fiber connector 105 is located at the light outlet 103. The connector 104 is used to connect the optical interface 201 of the optical transmission device 20 . The optical fiber connector 105 is used to connect the optical fiber 30 . In a possible implementation, the optical interface 201 of the optical transmission device 20 is provided with an optical fiber connector, and the connector 104 can be designed in the form of an optical fiber connector to adapt to the optical fiber connector provided in the optical interface 201 . It should be understood that the types of fiber optic connectors include but are not limited to SC connector (subscriber connector), LC connector (lucent connector), FC connector (ferrule connector), ST (straight tip) connector, E2000 connector, MPO (multi-fiber pull off) connectors, etc.

Figure 4(b) is a third structural schematic diagram of a visible light emitting device in an embodiment of the present application. As shown in FIG. 4(b) , the visible light emitting device 10 includes an optical fiber 106 , and the light entrance 102 is connected to the optical interface 201 of the optical transmission device 20 through the optical fiber 106 . The light outlet 103 can also be directly connected to the optical fiber 30 without providing an optical fiber connector. For example, the visible light emitting device 10 can have a section of its own optical fiber connected to the optical fiber 30 through the light outlet 103 .

Figure 4(c) is a fourth structural schematic diagram of a visible light emitting device in an embodiment of the present application. As shown in FIG. 4(c) , the light entrance 102 of the visible light emitting device 10 is provided with a connector 104 , and the connector 104 is used to connect to the optical interface 201 of the optical transmission device 20 . The light outlet 103 of the visible light emitting device 10 is directly connected to the optical fiber 30 .

Figure 4(d) is a fifth structural schematic diagram of a visible light emitting device in an embodiment of the present application. As shown in FIG. 4(d) , the light entrance 102 of the visible light emitting device 10 is connected to the optical interface 201 of the optical transmission device 20 through the optical fiber 106 . The light outlet 103 of the visible light emitting device 10 is provided with an optical fiber connector 105 , and the optical fiber connector 105 is used to connect the optical fiber 30 .

It should be noted that in order to ensure the normal operation of the visible light emitting device 10 and the light transmission device 20, the visible light emitting device 10 and the light transmission device 20 also need to be powered. The power supply method is introduced below with reference to specific embodiments.

FIG. 5 is a schematic structural diagram of the second optical communication device in the embodiment of the present application. As shown in FIG. 5 , the optical communication equipment also includes a power supply device 40 and a power supply line 50 . Among them, the power supply device 40 includes a connector 401, the optical transmission device 20 includes an electrical interface 202, and the connector 401 is connected to the electrical interface 202. The visible light emitting device 107 includes an electric input port 107. The electric input port 107 is provided on the housing 101. The power supply device 40 is connected to the electric input port 107 through a power supply line. This application does not limit the design method of the power input port 107. Specifically, the power supply device 40 is used to power the visible light emitting device 10 and the light transmission device 20 respectively. It should be understood that the power supply device 40 and the optical transmission device 20 are detachably connected. In a possible implementation, the power supply device 40 is provided with a voltage dividing module, and the voltage is distributed to the light emitting device 10 and the optical transmission device 20 through the voltage dividing module. It should be noted that in practical applications, the power supply device 40 can also be connected to the electrical interface 202 of the optical transmission device 20 through a power supply line.

Figure 6 is a third structural schematic diagram of optical communication equipment in an embodiment of the present application. As shown in FIG. 6 , the power supply device 40 is integrated in the visible light emitting device 10 , and the visible light emitting device 10 further includes an electrical output port 108 . The power supply device 40 is located in the housing 101, and the electrical output port 108 is provided on the housing 101. The optical communication equipment includes a power supply line 50. The electrical output port 108 is connected to the electrical interface 202 of the optical transmission device 20 through the power supply line 50. The voltage output by the power supply device 40 can be transmitted to the optical transmission device 20 through the power supply line 50. This application does not limit the design method of the electrical output port 108.

Figure 7 is a fourth structural schematic diagram of an optical communication device in an embodiment of the present application. As shown in FIG. 7 , the power supply device 40 is integrated in the visible light emitting device 10 . The visible light emitting device 10 includes an optical fiber 106 , an electrical output port 108 and a connector 109 . Among them, the power supply device 40 is located in the housing 101, the electrical output port 108 is provided on the housing 101, and the connector 109 is located in the electrical output port 108. The connector 109 is connected to the electrical interface 202 of the optical transmission device 20 . The light entrance 102 of the visible light emitting device 10 is connected to the optical interface 201 of the optical transmission device 20 through the optical fiber 106 .

It should be noted that in the above-mentioned embodiments shown in FIGS. 5 to 7 , the design method of the light entrance 102 and the light outlet 103 of the visible light emitting device 10 is also not limited. For details, please refer to the above-mentioned FIG. 4(a) - FIG. The relevant introduction to the embodiment shown in 4(d) will not be described again here.

FIG. 8 is a schematic structural diagram of the fifth optical communication device in the embodiment of the present application. As shown in FIG. 8 , based on the structure shown in FIG. 5 , the optical communication equipment further includes a power adapter 60 , and the power adapter 60 is connected to the power supply device 40 . Specifically, the power adapter 60 is used to output voltage to the power supply device 40 , and the power supply device 40 distributes the voltage to the visible light emitting device 10 and the light transmission device 20 . It should be noted that a power adapter 60 connected to the power supply device 40 can also be provided based on the structure shown in FIGS. 6 and 7 , and the drawings will not be shown one by one here.

In some possible implementations, the visible light emitting device 10 can also have a built-in battery and power itself through the battery, without sharing a power supply device with the light transmission device 20 . The optical transmission device 20 can be powered by a power supply system adapted thereto, and the specific method is not limited here.

In the embodiment of the present application, a visible light emitting device for generating visible light is provided, and the light entrance of the light emitting device is connected to the optical interface of the light transmission device. It is equivalent to connecting an external visible light emitting device to the light transmission device, and there is no need to modify the interior of the light transmission device. The light emitting device can couple the visible light generated by itself and the optical signal from the light transmission device into the optical fiber. That is to say, a beam of visible light is provided to be transmitted together with the optical signal emitted by the optical transmission device in the optical fiber. Visualized management is realized in practical applications. As long as the staff can identify visible light from the optical fiber, they can determine that the optical fiber has not been broken, without the need for staff to screen one by one through active detection, which improves maintenance efficiency. In addition, in addition to making it easy to determine whether the fiber is broken, workers can also determine whether the optical fiber is occupied by identifying visible light, so as to flexibly allocate idle optical fibers.

The visible light emitting device and optical communication equipment provided by the embodiments of the present application are introduced above, and the optical communication system provided by the present application is introduced below.

Figure 9 is a schematic structural diagram of an optical communication system in an embodiment of the present application. As shown in Figure 9, the optical communication system includes an optical communication device 901 and an optical communication device 902. The optical communication device 901 and the optical communication device 902 are connected through optical fibers. The optical communication device 901 and/or the optical communication device 902 may adopt the optical communication device introduced in any of the above embodiments.

In a possible implementation, the optical communication system provided by this application may be a PON system as shown in Figure 1 . For example, the ONU is used as the optical transmission device in the optical communication equipment provided by this application, thereby replacing the traditional ONU in the PON system with the optical communication equipment provided by this application. For another example, the OLT is used as the optical transmission device in the optical communication equipment provided by this application, thereby replacing the traditional OLT in the PON system with the optical communication equipment provided by this application. In one possible scenario, the optical splitter is connected to multiple optical communication devices including ONUs through multiple branch optical fibers. Each branch optical fiber transmits visible light in addition to uplink optical signals. The port connecting the branch fiber on the optical splitter can be illuminated by visible light to facilitate visual management.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, and all of them should be covered. within the protection scope of this application.

Claims

A visible light emitting device, characterized in that it includes: a casing, a light inlet and a light outlet, the light inlet and the light outlet are arranged on the casing, the light inlet is used to connect light transmission The optical interface of the device, the light outlet is used to connect the first optical fiber, and the optical signal output by the optical transmission device is input to the visible light emitting device through the light inlet;

The visible light emitting device is used to generate visible light and couple the optical signal and the visible light to the first optical fiber.
The visible light emitting device according to claim 1, characterized in that the visible light emitting device includes a first connector located at the light entrance, and the first connector is used to connect the Optical interface of optical transmission device;

or,

The visible light emitting device includes a second optical fiber, and the light entrance is used to connect an optical interface of the light transmission device through the second optical fiber.
The visible light emitting device according to claim 1 or 2, characterized in that the visible light emitting device includes a power supply device and an electrical output port, the power supply device is located in the housing, and the electrical output port is provided in the housing. On the body, the electrical output port is used to connect the electrical interface of the optical transmission device;

The power supply device is used to power the visible light emitting device and power the light transmission device through the electrical output port.
The visible light emitting device according to claim 3, wherein the electrical output port is used to connect an electrical interface of the light transmission device through a power supply line.
The visible light emitting device according to claim 3, wherein the visible light emitting device includes a second connector located at the electrical output port, and the second connector is used to connect the The electrical interface of the optical transmission device, the light inlet is used to connect the optical interface of the optical transmission device through the second optical fiber.
The visible light emitting device according to any one of claims 3 to 5, characterized in that the visible light emitting device further includes an electrical input port, the electrical input port is provided on the housing, the electrical input port It is used to connect a power adapter, the voltage output by the power adapter is input to the power supply device through the electrical input port, and the power supply device is used to distribute the voltage to the visible light emitting device and the light transmission device.
The visible light emitting device according to claim 1 or 2, characterized in that the visible light emitting device further includes a battery, the battery is located in the housing, and the battery is used to power the visible light emitting device.
The visible light emitting device according to any one of claims 1 to 7, characterized in that the visible light emitting device further includes an optical fiber connector, the optical fiber connector is located at the light outlet, and the optical fiber connector is used to connect the first optical fiber.
The visible light emitting device according to claim 8, characterized in that the type of optical fiber connector is SC connector, LC connector, FC connector, ST connector, E2000 connector or MPO connector.
An optical communication device, characterized in that it includes: an optical transmission device and a visible light emitting device, the visible light emitting device includes a housing, a light inlet and a light outlet, the light inlet and the light outlet are arranged on the On the housing, the light inlet is connected to the optical interface of the optical transmission device, and the light outlet is used to connect the first optical fiber;

The optical transmission device is used to output an optical signal to the visible light emitting device through the optical interface;

The visible light emitting device is used to generate visible light and couple the optical signal and the visible light to the first optical fiber.
The optical communication device according to claim 10, wherein the visible light emitting device includes a first connector located at the light entrance, and the first connector is connected to the optical transmission The optical interface of the device;

or,

The visible light emitting device includes a second optical fiber, and the light entrance is connected to the optical interface of the light transmission device through the second optical fiber.
The optical communication equipment according to claim 10 or 11, characterized in that the optical communication equipment further includes a power supply device, the power supply device is connected to the optical transmission device and the visible light emitting device respectively, and the power supply device respectively used to power the light transmission device and the visible light emitting device.
The optical communication equipment according to claim 12, wherein the optical communication equipment further includes a power supply line, the power supply device includes a second connector, the visible light emitting device further includes an electrical input port, and the electrical input port The port is provided on the housing, the second connector is connected to the electrical interface of the optical transmission device, and the power supply device is connected to the electrical input port through the power supply line.
The optical communication equipment according to claim 12 or 13, characterized in that the power supply device and the optical transmission device are detachably connected.
The optical communication equipment according to claim 10 or 11, characterized in that the visible light emitting device includes a power supply device and an electrical output port, the power supply device is located in the housing, and the electrical output port is provided in the housing. On the body, the electrical output port is connected to the electrical interface of the optical transmission device;

The power supply device is used to power the visible light emitting device and power the light transmission device through the electrical output port.
The optical communication equipment according to claim 15, characterized in that the optical communication equipment further includes a power supply line, and the electrical output port is connected to the electrical interface of the optical transmission device through the power supply line.
The optical communication device according to claim 15, wherein the visible light emitting device includes a second connector and a second optical fiber, the second connector is located at the electrical output port, and the second connector is connected to As for the electrical interface of the optical transmission device, the light entrance is connected to the optical interface of the optical transmission device through the second optical fiber.
The optical communication equipment according to any one of claims 12 to 17, characterized in that the optical communication equipment further includes a power adapter, the power adapter is connected to the power supply device, and the power adapter is used to provide power to the power supply device. The power supply device outputs a voltage, and the power supply device is used to distribute the voltage to the light transmission device and the visible light emitting device.
The optical communication device according to claim 10 or 11, wherein the visible light emitting device further includes a battery, the battery is located in the housing, and the battery is used to power the visible light emitting device.
The optical communication device according to any one of claims 10 to 19, wherein the visible light emitting device further includes an optical fiber connector located at the light outlet, and the optical fiber connector is used to connect the first optical fiber.
The optical communication device according to claim 20, characterized in that the type of the optical fiber connector is an SC connector, an LC connector, an FC connector, an ST connector, an E2000 connector or an MPO connector.
The optical communication device according to any one of claims 10 to 21, wherein the visible light emitting device and the optical transmission device are detachably connected.
The optical communication equipment according to any one of claims 10 to 22, characterized in that the type of the optical transmission device is an optical line terminal OLT or an optical network unit ONU.
An optical communication system, characterized in that it includes: a first optical communication device and a second optical communication device, the first optical communication device and the second optical communication device are connected through an optical fiber, and the first optical communication device The communication device and/or the second optical communication device is an optical communication device according to any one of claims 10 to 23.
The optical communication system according to claim 24, characterized in that the optical transmission device in the first optical communication equipment is an optical line terminal OLT, and the optical transmission device in the second optical communication equipment is an optical network unit ONU , the optical communication system includes N second optical communication devices, the optical communication system further includes an optical splitter, and N is an integer greater than 1;

The optical splitter is used to split the downlink optical signals from the first optical communication device, and transmit the split N downlink optical signals to the N second optical communication devices respectively;

The optical splitter is used to combine N uplink optical signals respectively from the N second optical communication devices, and transmit the combined uplink optical signals to the first optical communication device.