Networking system, network side switching equipment, access side Ethernet equipment and optical splitter

Abstract

The embodiment of the invention provides a networking system, network side switching equipment, access side Ethernet equipment and an optical splitter, and relates to the technical field of optical networks, and the networking system comprises the network side switching equipment, the optical splitter and the access side Ethernet equipment; the network side switching equipment is connected with the optical splitter through an optical fiber; the optical splitter is connected with the access side Ethernet equipment through an optical fiber, and the working wave band of the access side Ethernet equipment is a first wave band; an optical module is inserted into the access side Ethernet equipment, the access side Ethernet equipment is connected with the optical splitter through an optical fiber by utilizing the optical module, and the optical module is used for filtering a received optical signal to obtain an optical signal of a first wave band and sending the optical signal of the first wave band to the optical splitter; the network side switching device is used for transmitting the optical signal of the first wave band. According to the scheme, diversified point supplementing requirements can be met.

Description

Technical Field

[0001] The present application relates to the field of optical network technology, and in particular to a networking system, a network-side switching device, an access-side Ethernet device, and an optical splitter. Background Art

[0002] All-optical networking includes Passive Optical Network (PON) networking and Ethernet optical networking. The two networking modes are not integrated in network deployment. Due to the diversity of terminals and the need for additional points in the later stage of network construction, it is very likely that access-side Ethernet devices will need to be added to PON networking, or ONUs will need to be added to Ethernet networking. However, PON networking and Ethernet optical networking are not integrated in network deployment, resulting in the inability to meet the demand for additional points. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a networking system, a network-side switching device, an access-side Ethernet device and an optical splitter to meet the diverse needs of filling points. The specific technical solutions are as follows:

[0004] In a first aspect, an embodiment of the present application provides a networking system, the networking system comprising a network-side switching device, an optical splitter, and an access-side Ethernet device;

[0005] The network side switching device is connected to the optical splitter via an optical fiber; the optical splitter is connected to the access side Ethernet device via an optical fiber, and the working band of the access side Ethernet device is the first band;

[0006] An optical module is inserted into the access-side Ethernet device, and the access-side Ethernet device is connected to the optical splitter through an optical fiber using the optical module; the optical module is used to filter the received optical signal to obtain the optical signal of the first wavelength band, and send the optical signal of the first wavelength band to the optical splitter;

[0007] The optical splitter is used to forward the optical signal from the network side switching device to the access side Ethernet device, and to forward the optical signal from the access side Ethernet device to the network side switching device;

[0008] The network side switching device is used to transmit optical signals in the first wavelength band.

[0009] In some embodiments, the networking system further includes an ONU; the optical splitter is connected to the ONU via an optical fiber, the working band of the ONU is a second band, and the ONU is used to transmit an optical signal of the second band;

[0010] The optical splitter is also used to forward the optical signal from the network side switching device to the ONU, and forward the optical signal from the ONU to the network side switching device;

[0011] The network side switching device is also used to transmit the optical signal in the second wavelength band.

[0012] In some embodiments, the optical splitter is provided with a plurality of access side ports, and the optical splitter is connected to the access side Ethernet device or the ONU via an optical fiber using each access side port.

[0013] In some embodiments, each access-side Ethernet device connected to the optical splitter has a different operating band.

[0014] In some embodiments, the first wavelength band is within the wavelength band of 1280 nm to 1575 nm.

[0015] In some embodiments, the first band includes an upstream band and a downstream band, and the upstream band and the downstream band are coarse wavelength division bands.

[0016] In some embodiments, the network-side switching device includes an OLT device and a network-side Ethernet device; the OLT device and the network-side Ethernet device are respectively provided with a core port, and the OLT device uses the provided core port to connect to the optical splitter through an optical fiber to transmit the optical signal of the second band; the network-side Ethernet device uses the provided core port to connect to the optical splitter through an optical fiber to transmit the optical signal of the first band; or,

[0017] The network side switching device is provided with a fusion port, and the network side switching device is connected to the optical splitter through the fusion port via an optical fiber to transmit optical signals of the second wavelength band and the first wavelength band.

[0018] In a second aspect, an embodiment of the present application provides a network side switching device, wherein the network side switching device is connected to an optical splitter through an optical fiber; the optical splitter is connected to an access side Ethernet device through an optical fiber, and the working band of the access side Ethernet device is a first band; the optical splitter is used to forward an optical signal from the network side switching device to the access side Ethernet device, and to forward an optical signal from the access side Ethernet device to the network side switching device;

[0019] The network side switching device is used to transmit optical signals in the first wavelength band.

[0020] In some embodiments, the optical splitter is connected to the ONU via an optical fiber, and the working band of the ONU is the second band; the optical splitter is also used to forward the optical signal from the network side switching device to the ONU, and forward the optical signal from the ONU to the network side switching device;

[0021] The network side switching device is also used to transmit the optical signal in the second wavelength band.

[0022] In some embodiments, the network side switching device is provided with a fusion port, and the network side switching device is connected to the optical splitter via an optical fiber by using the fusion port to transmit optical signals of the second wavelength band and the first wavelength band.

[0023] In a third aspect, an embodiment of the present application provides an access-side Ethernet device, wherein an optical module is inserted into the access-side Ethernet device, and the access-side Ethernet device is connected to an optical splitter via an optical fiber using the optical module, and the optical module is used to filter the received optical signal to obtain an optical signal of a first band, and to send the optical signal of the first band to the optical splitter; the optical splitter is used to forward the optical signal from the network-side switching device to the access-side Ethernet device, and to forward the optical signal from the access-side Ethernet device to the network-side switching device.

[0024] In a fourth aspect, an embodiment of the present application provides an optical splitter, wherein the optical splitter is connected to a network-side switching device via an optical fiber; and the optical splitter is connected to an access-side Ethernet device via an optical fiber;

[0025] The optical splitter is used to forward the optical signal from the network side switching device to the access side Ethernet device, and to forward the optical signal from the access side Ethernet device to the network side switching device.

[0026] Beneficial effects of the embodiments of the present application:

[0027] In the technical solution provided by the embodiment of the present application, the access side Ethernet device is connected to the network side switching device through an optical splitter, the working band of the access side Ethernet device is the first band, and the network side switching device can transmit the optical signal of the corresponding band of the access side Ethernet device, the optical module on the access side Ethernet device filters the optical signal to obtain the optical signal of its working band, and sends the optical signal of its working band to the network side, so as to accurately process the optical signal, so that the access side Ethernet device can work normally after accessing the networking system. In addition, the middle layer of the networking system is an optical splitter, and the optical splitter is a passive optical device. Therefore, the networking system can definitely access the ONU. In this way, the access side Ethernet device and ONU can be arbitrarily supplemented in the networking system to meet the diversified supplementary point requirements.

[0028] Of course, implementing any product or method of the present application does not necessarily require achieving all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0030] Figure 1 A schematic diagram of the structure of a PON network in the prior art;

[0031] Figure 2 A schematic diagram of the structure of Ethernet optical networking in the prior art;

[0032] Figure 3 A schematic diagram of the structure of passive Ethernet optical networking in the prior art;

[0033] Figure 4 A schematic diagram for comparing passive Ethernet optical networking and PON networking in the prior art;

[0034] Figure 5a A first schematic diagram of a networking system provided in an embodiment of the present application;

[0035] Figure 5b A second schematic diagram of a networking system provided in an embodiment of the present application;

[0036] Figure 5c A third schematic diagram of the networking system provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of various PON bands;

[0038] Figure 7a A schematic diagram of the first architecture of the networking system provided in the embodiment of the present application;

[0039] Figure 7b A schematic diagram of a second architecture of a networking system provided in an embodiment of the present application;

[0040] Figure 8a Based on Figure 7a A schematic diagram of a networking system filling point;

[0041] Figure 8b Based on Figure 8a A schematic diagram of the networking system filling points. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field based on the present application belong to the scope of protection of the present application.

[0043] All-optical networking includes PON networking and Ethernet optical networking. The structure of PON networking is as follows Figure 1 As shown, the PON network includes an optical line terminal (OLT) device, a splitter and an optical network unit (ONU). The OLT device is a network-side switching device, which is used to send downstream optical signals of the PON protocol and receive upstream optical signals of the PON protocol. The splitter is a passive optical device, which is used to split one optical signal into multiple optical signals and combine multiple optical signals into one optical signal. The ONU is a passive optical device on the access side, which is used to send upstream optical signals of the PON protocol and receive downstream optical signals of the PON protocol.

[0044] The structure of Ethernet optical networking is as follows Figure 2 As shown, the Ethernet optical networking includes a network-side Ethernet device, an aggregation switch, and an access switch. The network-side Ethernet device is used as a network-side switching device to send downstream optical signals of the Ethernet optical protocol and receive upstream optical signals of the Ethernet optical protocol. The aggregation switch is an active optical device, which is used to forward optical signals sent by multiple access switches to the Ethernet device, and to forward optical signals sent by the Ethernet device to multiple access switches. The access switch is an access-side Ethernet device on the access side, which is used to send upstream optical signals of the Ethernet optical protocol and receive downstream optical signals of the Ethernet optical protocol.

[0045] With the development of optical network technology, passive Ethernet optical networking has emerged, such as Figure 3 As shown, the aggregation switch is replaced by a passive optical device, namely, a combiner / splitter. The combiner / splitter is used to filter the optical signal sent by the Ethernet device, split one optical signal into multiple optical signals, and obtain an optical signal of the required band for each access switch; the combiner / splitter is also used to combine multiple optical signals sent by multiple access switches into one optical signal, and obtain an optical signal of the required band for the Ethernet device.

[0046] Passive Ethernet optical networking and PON networking are similar in wiring topology. The two networking modes can be reused in infrastructure, such as Figure 4 As shown in Figure 1, the construction of passive Ethernet optical networking and PON networking can use the same set of optical fibers. However, to build different networks, different networking equipment needs to be installed, such as Figure 4In the passive Ethernet optical network, network-side Ethernet equipment, combiners, splitters and access switches need to be installed, and in the PON network, OLT equipment, splitters and ONU need to be installed. It can be seen that the passive Ethernet optical network and the PON network can reuse the same infrastructure, but they are still two sets of networks, and the two networking modes are not integrated in network deployment.

[0047] However, due to the diversity of terminals and the need for additional points in the later stage of network construction, it is very likely that additional Ethernet devices on the access side will be needed in PON networking, or additional ONUs will be needed in Ethernet networking. However, PON networking and Ethernet optical networking are not integrated in network deployment, resulting in the inability to meet the demand for additional points.

[0048] To solve the above problems, the present application provides a networking system, such as Figure 5a~Figure 5c As shown, it includes a network side switching device 51, an optical splitter 52 and an access side switching device. The access side switching device may include at least one of an ONU 53 and an access side Ethernet device 54;

[0049] The network side switching device 51 may be connected to the optical splitter 52 via an optical fiber;

[0050] In the case where the access-side switching device includes an access-side Ethernet device 54, the optical splitter 52 may be connected to the access-side Ethernet device 54 via an optical fiber, and the working band of the access-side Ethernet device 54 is the first band;

[0051] An optical module 541 may be inserted into the access-side Ethernet device 54. The access-side Ethernet device 54 may be connected to the optical splitter 52 through an optical fiber using the optical module 541. The optical module 541 may be used to filter the received optical signal to obtain an optical signal of a first wavelength band, and to send the optical signal of the first wavelength band to the optical splitter 52.

[0052] The optical splitter 52 may be used to forward the optical signal from the network side switching device 51 to the access side Ethernet device 54, and to forward the optical signal from the access side Ethernet device 54 to the network side switching device 51;

[0053] The network-side switching device 51 may be used to transmit optical signals in the first wavelength band.

[0054] In the technical solution provided by the embodiment of the present application, the access side Ethernet device is connected to the network side switching device through an optical splitter, the working band of the access side Ethernet device is the first band, and the network side switching device can transmit the optical signal of the corresponding band of the access side Ethernet device, the optical module on the access side Ethernet device filters the optical signal to obtain the optical signal of its working band, and sends the optical signal of its working band to the network side, so as to accurately process the optical signal, so that the access side Ethernet device can work normally after accessing the networking system. In addition, the middle layer of the networking system is an optical splitter, and the optical splitter is a passive optical device. Therefore, the networking system can definitely access the ONU. In this way, the access side Ethernet device and ONU can be arbitrarily supplemented in the networking system to meet the diversified supplementary point requirements.

[0055] like Figure 5a~Figure 5c As shown, in the case where the access side switching device includes ONU53, the optical splitter 52 can be connected to the ONU53 through an optical fiber, the working band of the ONU53 is the second band, and the ONU53 can be used to transmit the optical signal of the second band;

[0056] The optical splitter 52 may also be used to forward the optical signal from the network side switching device 51 to the ONU 53, and to forward the optical signal from the ONU 53 to the network side switching device 51;

[0057] The network-side switching device 51 may also be used to transmit optical signals in the second wavelength band.

[0058] In an embodiment of the present application, the network side switching device 51 may include at least one of an OLT device 511 and a network side Ethernet device 512, the OLT device 511 is used to transmit an optical signal of the second band, that is, to send an optical signal of the second band to the ONU 53, and to receive the optical signal of the second band sent by the ONU 53; the network side Ethernet device 512 is used to transmit an optical signal of the first band, that is, to send an optical signal of the first band to the access side Ethernet device 54, and to receive the optical signal of the first band sent by the access side Ethernet device 54.

[0059] For the OLT device 511 and the network side Ethernet device 512, the network side switching device 51 can provide two core ports, such as Figure 5a and Figure 5b As shown, the OLT device 511 and the network-side Ethernet device 512 are respectively provided with a core port, and the OLT device 511 and the network-side Ethernet device 512 are respectively connected to the optical splitter 52 through the provided core ports through optical fibers. Figure 5aAs shown, a core port 513 is provided on the OLT device 511, and the core port 513 can be implemented by an optical module, and the optical module can be fixedly installed on the OLT device 511, or can be pluggably installed on the OLT device 511. A core port 514 is provided on the network-side Ethernet device 512, and the core port 514 can be implemented by an optical module, and the optical module can be fixedly installed on the network-side Ethernet device 512, or can be pluggably installed on the network-side Ethernet device 512. The OLT device 511 uses the core port 513 to connect with the optical splitter 52 through an optical fiber to transmit an optical signal of the second wavelength band, and the network-side Ethernet device 512 uses the core port 514 to connect with the optical splitter 52 through an optical fiber to transmit an optical signal of the first wavelength band. That is, the core port 513 executes the PON protocol for outputting and inputting the PON optical signal, and the core port 514 executes the Ethernet optical protocol for outputting and inputting the Ethernet optical signal.

[0060] When the network-side switching device 51 provides two core ports, the OLT device 511 sends an optical signal of the second band to the ONU 53 through its own core port 513, and receives the optical signal of the second band sent by the ONU 53; the network-side Ethernet device 512 sends an optical signal of the first band to the access-side Ethernet device 54 through its own core port 514, and receives the optical signal of the first band sent by the access-side Ethernet device 54.

[0061] In the embodiment of the present application, the network side switching device 51 may be a frame-type device (such as a network switch rack, etc.) or a non-frame-type device. When the network side switching device 51 may be a non-frame-type device, the OLT device 511 and the network side Ethernet device 512 may be a physical machine, such as Figure 5a When the network side switching device 51 can be a frame-type device, the OLT device 511 and the network side Ethernet device 512 can be a board card, such as an OLT board card and a network side Ethernet board card, such as Figure 5b As shown, the OLT board and the network-side Ethernet board are inserted into the same frame device.

[0062] In the embodiment of the present application, the network side switching device 51 may also provide a core port (ie, a fusion port), such as Figure 5cAs shown, a fusion port 515 is provided on the network side switching device 51. The fusion port 515 can be realized by an optical module. The optical module can be fixedly installed on the network side switching device 51 or pluggably installed on the network side switching device 51. The network side switching device 51 can use the fusion port 515 to connect with the optical splitter 52 through an optical fiber to transmit optical signals of the second band and the first band. The fusion port can be compatible with the simultaneous output and input of Ethernet optical signals and PON optical signals, that is, the fusion port executes the PON protocol and the Ethernet optical protocol at the same time. This assembly method can be used when optical devices such as wavelength division multiplexing (WDM) lasers are sufficiently miniaturized.

[0063] When the network side switching device 51 provides a fusion port, the network side switching device 51 can send an optical signal of the second band to the ONU 53 through the fusion port 515, and receive the optical signal of the second band sent by the ONU 53; the network side switching device 51 can send an optical signal of the first band to the access side Ethernet device 54 through the fusion port 515, and receive the optical signal of the first band sent by the access side Ethernet device 54. In the embodiment of the present application, the network side switching device 51 is equivalent to integrating the functions of the OLT and the Ethernet device, and only one optical fiber needs to be deployed between the network side switching device 51 and the optical splitter 52, so that the communication between the network side switching device 51 and the ONU 53 and the access side Ethernet device 54 can be realized, which reduces the number of optical fibers and reduces the cost of network deployment.

[0064] The optical splitter 52 may be a passive optical device, which may be used to split an optical signal into multiple optical signals, and to combine multiple optical signals into one or more optical signals. The specifications of the optical splitter 52 may be set according to actual needs. For example, the specifications of the optical splitter 52 may be 1:8, 2:8, etc.

[0065] Figure 5a and Figure 5b In the embodiment, the optical splitter 52 can be used to split two optical signals into multiple optical signals (downlink optical signals), and combine multiple optical signals into two optical signals (uplink optical signals). The specifications of the optical splitter 52 can be set according to actual needs. For example, the specifications of the optical splitter 52 can be 2:8, 2:16, etc.

[0066] Figure 5c In the embodiment, the optical splitter 52 can be used to split one optical signal into multiple optical signals (downlink optical signals), and combine multiple optical signals into one optical signal (uplink optical signal). The specification of the optical splitter 52 can be set according to actual needs. For example, the specification of the optical splitter 52 can be 1:8, 1:16, etc.

[0067] In the embodiment of the present application, the working band of ONU53 is the second band. The specific value of the second band can be determined according to the PON type. Figure 6 Schematic diagram of the bands of various PONs shown. For 10G PONs such as XGSPON and symmetrical 10GEPON, the upstream band (the upstream band included in the second band) is 1260~1280 nanometers (nm), and the downstream band (the downstream band included in the second band) is 1575~1580nm.

[0068] The access side Ethernet device 54 may be an active optical terminal such as a switch or a router. The working band of the access side Ethernet device 54 is the first band. The first band is a band different from the second band. For example, for 10G PON, the first band may be a band in the range of 1280 to 1575 nm. In the embodiment of the present application, the first band may also be other bands, which is not limited thereto.

[0069] In order to reduce the networking cost and improve the stability of the optical signal, the first band includes an uplink band and a downlink band, and the uplink band and the downlink band can be coarse wavelength division bands.

[0070] For example, for 10G PON, the first wavelength band may be a wavelength band between 1280 and 1575 nm, and the coarse wavelength division wavelength bands between 1280 and 1575 nm include: 1291 nm, 1311 nm, 1331 nm, 1351 nm, 1371 nm, 1411 nm, 1431 nm, 1451 nm, 1471 nm, 1491 nm, 1511 nm, 1531 nm, 1551 nm, and 1571 nm.

[0071] The uplink band and downlink band included in the first band may be any two bands in the above coarse wavelength division bands. For example, the uplink band / downlink band included in the first band may be {1311nm / 1471nm}, {1331nm / 1491nm}, {1351nm / 1511nm}, {1371nm / 1531nm}, etc.

[0072] In the embodiment of the present application, the uplink band and the downlink band included in the first band may also be other bands than the second band, which is not limited. The first band is different from the second band, so that PON communication and Ethernet optical communication can work on the same optical fiber.

[0073] In the embodiment of the present application, in order to ensure that the access-side Ethernet device 54 obtains the optical signal of the corresponding band, an optical module 541 can be inserted into the access-side Ethernet device 54. The optical module 541 integrates the filtering function in the wavelength combiner / demultiplexer, filters the received optical signal, obtains the optical signal of the first band, and sends the optical signal of the first band to the optical splitter. It can be understood that the working band of the optical module 541 is the first band.

[0074] For example, the uplink band / downlink band included in the first band is {1311nm / 1471nm}. The optical module 541 obtains the electrical signal sent by the access side Ethernet device 54 to the network side switching device 51, converts the electrical signal into a 1311nm optical signal, and sends the 1311nm optical signal to the network side switching device 51 through the optical fiber; the optical module 541 obtains the optical signal sent by the network side switching device 51, filters the optical signal to obtain a 1471nm optical signal, converts the 1471nm optical signal into an electrical signal, and sends the electrical signal to the CPU of the access side Ethernet device 54 for processing.

[0075] In the embodiment of the present application, the filtering characteristics of the passive optical devices (combiner / demultiplexer) in the passive Ethernet optical networking are sunk into the optical module of the terminal, so that the passive Ethernet optical networking can also be implemented using the optical splitter 52. In addition, the filtering characteristics are sunk into the optical module of the terminal, so that the user does not feel the difference between the PON networking and the Ethernet optical networking, and can connect an optical fiber to the access side Ethernet device 54 or ONU53 according to actual needs, meet the diversified filling point requirements, improve the flexibility of the networking system deployment, and the infrastructure can be reused, which is beneficial to the feasibility of the old infrastructure.

[0076] In the embodiment of the present application, in order to ensure that the access-side Ethernet device 54 accurately processes data, the working bands of the access-side Ethernet devices 54 connected to the optical splitter 52 are different. In this case, the number of access-side Ethernet devices 54 connected to the optical splitter 52 is less than or equal to the number of the second band, ensuring that each access-side Ethernet device 54 can accurately receive and process optical signals.

[0077] For example, the first band (uplink band / downlink band) includes {1311nm / 1471nm}, {1331nm / 1491nm}, {1351nm / 1511nm}, and {1371nm / 1531nm}, a total of 4 groups of bands. Then, the number of access-side Ethernet devices 54 connected to the optical splitter 52 is less than or equal to 4. These 4 access-side Ethernet devices 54 operate in different first bands, that is, the optical modules 541 inserted into these 4 access-side Ethernet devices 54 operate in different first bands.

[0078] In the embodiment of the present application, when the network side switching device 51 provides two core ports, two network side ports are arranged on the optical splitter 52, one network side port is connected to the core port on the OLT device included in the network side switching device 51 through optical fiber, and the other network side port is connected to the core port on the network side Ethernet device included in the network side switching device 51 through optical fiber; when the network side switching device 51 provides a fusion port, one network side port is arranged on the optical splitter 52, and the network side port is connected to the fusion port on the network side switching device 51 through optical fiber.

[0079] In addition, the optical splitter 52 may be provided with a plurality of access side ports, each of which may be used to connect to the access side Ethernet device 54 or the ONU 53 through an optical fiber, that is, each of the access side ports may be used to connect to the access side Ethernet device 54 through an optical fiber, or may be used to connect to the ONU 53 through an optical fiber. The number of the access side ports is the same as the number of optical signal paths after the optical splitting.

[0080] In the embodiment of the present application, one optical fiber can be connected to both the access side Ethernet device 54 and the ONU 53. In this way, in the established networking system, the ONU 53 that has been optically connected to the optical splitter 52 (i.e., the connected ONU 53) can be replaced by the access side Ethernet device 54, and the access side Ethernet device 54 is inserted with an optical module 541, and the working band of the optical module 541 is the first band that is not occupied by the access side Ethernet device 54 that has been connected to the networking system. The access side Ethernet device 54 that has been optically connected to the optical splitter (the connected access side Ethernet device 54) can be replaced by the ONU 53.

[0081] For example, the first ONU may be any ONU 53 that has been connected to the networking system, and the first access-side Ethernet device may be any access-side Ethernet device 54 that has not been connected to the networking system. In this case, the optical splitter 52 is connected to the first ONU via an optical fiber, and the first ONU may be directly replaced by the first access-side Ethernet device. As long as an optical module whose working band is not occupied is inserted into the first access-side Ethernet device.

[0082] For example, the second access side Ethernet device can be any access side Ethernet device 54 that has been connected to the networking system, and the second ONU can be any ONU 53 that has not been connected to the networking system. In this case, the optical splitter 52 is connected to the second access side Ethernet device through an optical fiber, and the second access side Ethernet device can be directly replaced by the second ONU.

[0083] For example, the first band (uplink band / downlink band) includes {1311nm / 1471nm}, {1331nm / 1491nm}, {1351nm / 1511nm}, and {1371nm / 1531nm}, a total of 4 bands. When a switching device 0 (i.e., a network-side switching device) provides two core ports, the architecture of the networking system is as follows: Figure 7a As shown, the switch device 0 includes an OLT card and an Ethernet card, and the specification of the optical splitter is 2:8. When a switch device 0 provides a fusion port, the architecture of the networking system is as follows Figure 7b As shown, the switching device 0 can send OLT optical signals and Ethernet optical signals, but has only one board, and the specification of the optical splitter is 1:8.

[0084] Figure 7a and Figure 7b In the networking system shown in the figure, a maximum of four switching devices (i.e., access-side Ethernet devices) are connected. Figure 7a and Figure 7b In the switching device 1 to the switching device 4, the optical module with the working band of {1311nm / 1471nm} (i.e., {1311nm / 1471nm} optical module 1) is inserted into the switching device 1, that is, the working band of the switching device 1 is {1311nm / 1471nm}; the optical module with the working band of {1331nm / 1491nm} (i.e., {1331nm / 1491nm} optical module 2) is inserted into the switching device 2, that is, the working band of the switching device 2 is {1331nm / 1491nm}. / 1491nm}; an optical module with a working band of {1351nm / 1511nm} (i.e., {1351nm / 1511nm} optical module 3) is inserted into switch device 3, i.e., the working band of switch device 3 is {1351nm / 1511nm}; an optical module with a working band of {1371nm / 1531nm} (i.e., {1371nm / 1531nm} optical module 4) is inserted into switch device 4, i.e., the working band of switch device 4 is {1371nm / 1531nm}. The other optical fibers of the networking system are connected to the ONU, such as Figure 7a and Figure 7b ONU1~ONU4 in it.

[0085] by Figure 7a For example, according to the networking requirements, when a switching device needs to be replaced with an ONU, such as replacing switching device 3 with ONU5, the switching device 3 can be directly uninstalled from the networking system, and ONU5 can be connected to the networking system through the optical fiber connected to the switching device 3. Figure 8a shown.

[0086] exist Figure 8aOn the basis of, according to the networking requirements, when it is necessary to replace an ONU with a switching device, such as replacing ONU4 with switching device 5, an optical module whose working band is an unoccupied first band, such as {1351nm / 1511nm} optical module 3, can be inserted into the switching device 5, so that the working band of the switching device 5 is {1351nm / 1511nm}, and then ONU4 is uninstalled from the networking system, and the switching device 5 is connected to the networking system, such as Figure 8b shown.

[0087] The networking system provided in the embodiment of the present application realizes the hyper-convergence of PON networking and Ethernet optical networking. The intermediate layer equipment (such as splitters) can be shared. When performing network access, it is only necessary to flexibly select different network-side switching devices and different terminals (such as ONU and access-side Ethernet devices). Similar to selecting boards with different rate ports in the same Ethernet, access to different networks can be achieved by replacing boards or optical modules without major modifications, which reduces the cost of network deployment and is more in line with user habits.

[0088] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A networking system, characterized in that: The networking system includes a network-side switching device, an optical splitter and an access-side Ethernet device; The network side switching device is connected to the optical splitter via an optical fiber; the optical splitter is connected to the access side Ethernet device via an optical fiber, and the working band of the access side Ethernet device is the first band; An optical module is inserted into the access-side Ethernet device, and the access-side Ethernet device is connected to the optical splitter through an optical fiber using the optical module; the optical module is used to filter the received optical signal to obtain the optical signal of the first wavelength band, and send the optical signal of the first wavelength band to the optical splitter; The optical splitter is used to forward the optical signal from the network side switching device to the access side Ethernet device, and to forward the optical signal from the access side Ethernet device to the network side switching device; The network side switching device is used to transmit optical signals in the first wavelength band.

2. The system according to claim 1, characterized in that The networking system further includes an ONU; the optical splitter is connected to the ONU via an optical fiber, the working band of the ONU is a second band, and the ONU is used to transmit an optical signal of the second band; The optical splitter is also used to forward the optical signal from the network side switching device to the ONU, and forward the optical signal from the ONU to the network side switching device; The network side switching device is also used to transmit the optical signal in the second wavelength band.

3. The system according to claim 2, characterized in that The optical splitter is provided with a plurality of access side ports, and each access side port is connected to the access side Ethernet device or the ONU via an optical fiber.

4. The system according to claim 1, characterized in that The working bands of the access-side Ethernet devices connected to the optical splitter are different.

5. The system according to claim 1, characterized in that The first waveband is located in the 1280 nm to 1575 nm waveband.

6. The system according to claim 5, characterized in that The first band includes an uplink band and a downlink band, and the uplink band and the downlink band are coarse wavelength division bands.

7. The system according to claim 2, characterized in that The network-side switching device includes an OLT device and a network-side Ethernet device; the OLT device and the network-side Ethernet device are respectively provided with a core port, the OLT device uses the provided core port to connect with the optical splitter through an optical fiber to transmit the optical signal of the second wavelength band; the network-side Ethernet device uses the provided core port to connect with the optical splitter through an optical fiber to transmit the optical signal of the first wavelength band; or, The network side switching device is provided with a fusion port, and the network side switching device is connected to the optical splitter through the fusion port via an optical fiber to transmit optical signals of the second wavelength band and the first wavelength band.

8. A network side switching device, characterized in that: The network side switching device is connected to the optical splitter through an optical fiber; the optical splitter is connected to the access side Ethernet device through an optical fiber, and the working band of the access side Ethernet device is the first band; the optical splitter is used to forward the optical signal from the network side switching device to the access side Ethernet device, and to forward the optical signal from the access side Ethernet device to the network side switching device; The network side switching device is used to transmit optical signals in the first wavelength band.

9. The network side switching device according to claim 8, characterized in that: The optical splitter is connected to the ONU via an optical fiber, and the working band of the ONU is the second band; the optical splitter is also used to forward the optical signal from the network side switching device to the ONU, and forward the optical signal from the ONU to the network side switching device; The network side switching device is also used to transmit the optical signal in the second wavelength band.

10. The network side switching device according to claim 9, characterized in that: The network side switching device is provided with a fusion port, and the network side switching device is connected to the optical splitter through the fusion port via an optical fiber to transmit optical signals of the second wavelength band and the first wavelength band.

11. An access-side Ethernet device, characterized in that: An optical module is inserted into the access-side Ethernet device, and the access-side Ethernet device uses the optical module to connect with the optical splitter through an optical fiber. The optical module is used to filter the received optical signal to obtain an optical signal of a first band, and to send the optical signal of the first band to the optical splitter; the optical splitter is used to forward the optical signal from the network-side switching device to the access-side Ethernet device, and to forward the optical signal from the access-side Ethernet device to the network-side switching device.

12. A spectrometer, characterized in that: The optical splitter is connected to the network side switching device via an optical fiber; and the optical splitter is connected to the access side Ethernet device via an optical fiber; The optical splitter is used to forward the optical signal from the network side switching device to the access side Ethernet device, and to forward the optical signal from the access side Ethernet device to the network side switching device.

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