Signal conversion module, signal conversion method, optical fiber transmission system, and computer program product

Abstract

The present application provides a signal conversion module, a signal conversion method, an optical fiber transmission system, and a storage medium, the signal conversion module including a conversion unit and a processing unit, the conversion unit being used to convert at least two-path first electrical signals into at least two-path first optical signals corresponding to different wavelengths, and the processing unit being used to multiplex the at least two-path first optical signals into a first mixed optical signal.

Description

[Technical Field]

[0001] The present application relates to the field of communication technology, in particular to a signal conversion module, a signal conversion method, an optical fiber transmission system, and computer program products Regarding. [Background technology]

[0002] With the development of communication technology, the number of network access users is increasing, and users' speed requirements for network data transmission are also increasing. Therefore, a three-layer networking architecture including core layer network equipment, aggregation layer network equipment, and access layer network equipment is widely used in network design to provide users with a secure, reliable, scalable, economical, and efficient Internet. Here, aggregation layer network equipment, as a physical entity in the aggregation layer, mainly aggregates data from access layer network equipment and forwards it to core layer network equipment, thereby reducing the burden on core layer network equipment. Aggregation layer network equipment (e.g., aggregation switches) are usually active devices and are generally deployed in low-power machine rooms. When a large number of aggregation switches are deployed in low-power machine room areas, active power supply is required, which often places high demands on the low-power machine room. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application relates to a signal conversion module, a signal conversion method, an optical fiber transmission system, and computer program products to provide. [Means for solving the problem]

[0004] According to a first aspect, an embodiment of the present application provides a signal conversion module, the signal conversion module including a conversion unit and a processing unit, the conversion unit being used to convert received at least two-path first electrical signals into at least two-path first optical signals corresponding to different wavelengths, and the processing unit being used to multiplex the at least two-path first optical signals into a first mixed optical signal.

[0005] In the above solution, the conversion unit and the processing unit are integrated into a single signal conversion module, which reduces the amount of operational maintenance management required when the signal conversion module is deployed. Furthermore, because the signal conversion module is a passive network device, there is no need to deploy the signal conversion module in a dedicated low-voltage machinery room (some organizations even do not have a low-voltage machinery room, and deployment is not possible or is difficult when there is no low-voltage machinery room or the environment of the low-voltage machinery room is poor), so the signal conversion module of the present application can reduce the operational maintenance costs and difficulties of the low-voltage machinery room and is highly applicable. Because the signal conversion module can be deployed in an indoor machinery room, it is not affected by external temperature, humidity, or lightning weather, reducing the impact of the natural environment, improving the service life of the signal conversion module and reducing replacement and maintenance costs.

[0006] In one possible implementation, the at least two-path first electrical signal is an electrical signal launched by a core switch. Compared with separately deploying optical modules and wavelength division multiplexing / demultiplexing devices on the core layer network equipment side, integrating a communication unit, a conversion unit, and a processing unit into one signal conversion module reduces the number of devices deployed on the core layer network equipment side and reduces the deployment of optical fibers between the optical modules on the core layer network equipment side and the wavelength division multiplexing / demultiplexing devices, thereby simplifying operation and maintenance management.

[0007] In one possible implementation, the processing unit is further used for demultiplexing the received second mixed optical signal into at least two-path second optical signals each corresponding to a different wavelength, and the conversion unit is further used for converting the at least two-path second optical signals into at least two-path second electrical signals.

[0008] In one possible implementation, the second mixed optical signal comprises: Multiple It is a mixed optical signal obtained by multiplexing several optical signals launched by the access switches.

[0009] In one possible implementation, the conversion unit includes a color laser subunit and a detector subunit, wherein the color laser subunit is used to convert the received at least two-path first electrical signals into at least two-path first optical signals each corresponding to a different wavelength, and the detector subunit is used to convert the received at least two-path second optical signals into at least two-path second electrical signals.

[0010] In one possible implementation, the processing unit includes an internal multiplexer subunit and an internal demultiplexer subunit, the internal multiplexer subunit being used to multiplex the received at least two-path first optical signals into a first mixed optical signal, and the internal demultiplexer subunit being used to demultiplex the received second mixed optical signal into at least two-path second optical signals, the at least two-path optical signals corresponding to different wavelengths.

[0011] In one possible implementation, the internal multiplexer subunit comprises a first optical signal multiplexer for multiplexing the received at least two-path first optical signals into a multi-path mixed optical signal. Multiple A first stage internal multiplexer and a second stage internal multiplexer for multiplexing received multipath mixed optical signals into said first mixed optical signal. Here, the at least two paths of the first optical signal include at least four paths of the first optical signal.The multi-stage internal multiplexer allows each internal multiplexer to complete multiplexing of a part of the optical signals, which reduces the complexity of the manufacturing process.

[0012] In one possible implementation method, the first-stage internal multiplexer is configured to multiplex a plurality of optical signals among the at least two-path first optical signals into a third mixed optical signal, the first-stage internal multiplexer is further configured to multiplex a remaining plurality of optical signals among the at least two-path first optical signals into a fourth mixed optical signal, and the second-stage internal multiplexer is configured to multiplex the third mixed optical signal and the fourth mixed optical signal into the first mixed optical signal.

[0013] In one possible implementation, the internal demultiplexer subunit includes a first stage internal demultiplexer module for demultiplexing the received second mixed optical signal into a plurality of mixed optical signals; Multiple for demultiplexing the mixed optical signal into a plurality of second optical signals Multiple and a second stage internal demultiplexer module. Here, the plurality of second optical signals includes at least four paths of the second optical signals. The multi-stage internal demultiplexer allows each internal demultiplexer to complete the demultiplexing of a part of the optical signals, which reduces the complexity of the manufacturing process.

[0014] In one possible implementation, the processing unit further includes a filter, which is used to filter the interference signal to obtain the second mixed optical signal, which can effectively remove the interference signal and obtain an accurate second mixed optical signal.

[0015] In one possible implementation, the filter includes a first filter and a second filter, the first filter being used to pass light having a wavelength in a first wavelength band, and the second filter being used to pass light having a wavelength in a second wavelength band, the first wavelength band and the second wavelength band having different ranges. Here, the second mixed optical signal includes light whose wavelength is in the first wavelength band and light whose wavelength is in the second wavelength band. Combining multiple filters can effectively improve filtering performance.

[0016] In one possible implementation, the signal conversion module further includes a communication unit for transmitting the first mixed optical signal and / or receiving the second mixed optical signal by an optical fiber.

[0017] In one possible implementation, the communication unit is configured to receive the fifth mixed optical signal, which includes the second mixed optical signal and the interference optical signal.

[0018] In one possible implementation, the communication unit is an external multiplexer / demultiplexer module.

[0019] In one possible implementation, the signal conversion module further includes a gold finger connector for connecting to a core switch and an optical fiber interface for connecting to an optical fiber transmitting the first mixed optical signal. Connecting the signal conversion module to the core switch via the gold finger connector can effectively reduce the number of optical fibers used and facilitate plugging and unplugging maintenance.

[0020] According to a second aspect, an embodiment of the present application provides a signal conversion method, which may be performed by a signal conversion module or a part of a module in the signal conversion module. The present application does not limit the implementation of the method. The method includes receiving at least two-path first electrical signals, converting the at least two-path first electrical signals into at least two-path first optical signals corresponding to different wavelengths, multiplexing the at least two-path first optical signals into a first mixed optical signal, and transmitting the first mixed optical signal.

[0021] The above solution may be implemented by a signal conversion module or a part of a signal conversion module, and there is no need to deploy the signal conversion module in a dedicated low-voltage machinery room (some organizations even do not have a low-voltage machinery room, and if there is no low-voltage machinery room or the environment of the low-voltage machinery room is poor, deployment cannot be carried out and applicability is poor). Therefore, the signal conversion module of the present application can reduce the operating and maintenance costs and difficulties of the low-voltage machinery room, has strong applicability, and because the signal conversion module can be deployed in an indoor machinery room, the signal conversion module is not affected by external temperature, humidity or lightning weather, and reduces the impact of the natural environment, improves the service life of the signal conversion module, and reduces replacement and maintenance costs.

[0022] In one possible implementation, Multiplexing at least two passes of the first optical signal into the first mixed optical signal includes: Multiplexing a plurality of optical signals in at least two passes of the first optical signal into a third mixed optical signal To do multiplexing the remaining optical signals in the at least two-pass first optical signal into a fourth mixed optical signal; multiplexing at least two first optical signals into a first mixed optical signal; , multiplexing the third mixed optical signal and the fourth mixed optical signal into the first mixed optical signal; This includes . Here, the at least two paths of the first optical signal include at least four paths of the first optical signal.

[0023] In the above solution, the at least two-path first optical signal is divided into two parts, and the two parts of the first optical signal are processed respectively, thereby increasing the efficiency of multiplexing the at least two-path optical signal into a mixed signal.

[0024] In one possible implementation, a second mixed optical signal is received, the second mixed optical signal is demultiplexed into at least two-path second optical signals each corresponding to a different wavelength, the at least two-path second optical signals are converted into at least two-path second electrical signals, and the at least two-path second electrical signals are transmitted.

[0025] The above solution may be implemented by a signal conversion module or a part of a signal conversion module, and the signal conversion module does not need to be installed in a dedicated low-voltage machine room (some organizations even do not have a low-voltage machine room, and if there is no low-voltage machine room or the environment of the low-voltage machine room is poor, installation is not possible and applicability is poor), so the signal conversion module of the present application can reduce the operating and maintenance costs and difficulties of the low-voltage machine room, and is highly applicable. Because the signal conversion module can be installed in an indoor machine room, the signal conversion module is not affected by external temperature, humidity, or lightning weather, reducing the impact of the natural environment, improving the service life of the signal conversion module, and reducing replacement and maintenance costs.

[0026] In one possible implementation, a fifth mixed optical signal including the second mixed optical signal and the interference optical signal is received, and the interference optical signal is filtered.

[0027] The above solution can effectively eliminate the interference optical signal and obtain an accurate second mixed optical signal.

[0028] In one possible implementation, a single filter is used to filter the interference signal, or multiple filters are used to filter the interference signal based on the second mixed optical signal.

[0029] The above solution can effectively eliminate the interference optical signal and obtain an accurate second mixed optical signal.

[0030] According to a third aspect, an embodiment of the present application further provides an optical fiber transmission system, the optical fiber transmission system comprising: providing at least two paths of the first electrical signal to a signal conversion module; Signal Conversion Module At least two passes of the first two a core switch for receiving the electrical signal; receiving the at least two-path first electrical signals provided by a core switch; generating at least two-path first optical signals based on the at least two-path first electrical signals; multiplexing the at least two-path optical signals into a first mixed optical signal; transmitting the first mixed optical signal to a remote access module; receiving a second mixed optical signal transmitted by the remote access module; demultiplexing the second mixed optical signal into an at least two-path second optical signal; Second and converting the at least two paths into an electrical signal. Second a signal conversion module for transmitting an electrical signal to the core switch; Includes.

[0031] In one possible implementation, the optical fiber transmission system further includes the remote access module, wherein the remote access module: receiving the first mixed optical signal transmitted by the signal conversion module, demultiplexing the first mixed optical signal into at least two-path third optical signals, transmitting the at least two-path third optical signals to at least two remote optical modules, receiving at least two-path fourth optical signals transmitted by the at least two remote optical modules, and multiplexing the at least two-path fourth optical signals into the second mixed optical signal; Passive Wavelength Splitter Box and, receiving the at least two-path third optical signal, generating at least two-path third electrical signals based on the received at least two-path third optical signal, transmitting the at least two-path third electrical signals to at least two access switches, receiving at least two-path fourth electrical signals transmitted by the access switches, generating at least two-path fourth optical signals based on the at least two-path fourth electrical signals, and transmitting the at least two-path fourth optical signals to the Passive Wavelength Splitter Box the at least two remote optical modules for transmitting to The aforementioned At least two receiving the at least two-path third electrical signal transmitted by the remote optical module; and transmitting the at least two-path fourth electrical signal to the At least two and the at least two access switches for transmitting to a remote optical module.

[0032] According to a fourth aspect, an embodiment of the present application comprises: computer program products and further providing a computer readable instruction stored therein, the computer readable instruction being read by a computer; The computer program product comprises: When executed, it realizes any method of the second aspect above. It is configured as follows: .

[0033] According to a fifth aspect, an embodiment of the present application further provides an integrated color light optical module, the integrated color light optical module including: an emission box BOX in which a color laser module and an internal multiplexer are packaged; and a reception box BOX in which a PD detector and an internal demultiplexer unit are packaged. The color laser module is configured to be driven by an electrical signal transmitted by a core switch and to generate emission optical signals corresponding to N wavelength bands. The internal multiplexer module is configured to multiplex the emission optical signals of the N wavelength bands into a one-path composite emission optical signal. The internal demultiplexer unit is configured to demultiplex the received one-path composite received optical signal into reception optical signals of the N wavelength bands. The PD detector is configured to convert the reception optical signals of the N wavelength bands into reception electrical signals for transmission to the core switch.

[0034] In one possible implementation, the integrated color light module further includes an external multiplexer / demultiplexer, connected to the emission box BOX and the reception box BOX respectively, configured to emit the composite emission optical signal through the same single optical fiber and receive the composite reception optical signal transmitted by the access switch, wherein the emission optical signal and the reception optical signal have different wavelength bands.

[0035] In one possible implementation, the internal multiplexer module includes multiple internal multiplexers, each of which performs a corresponding number of multiplexing operations on the inputted emitted optical signals, and transmits the multiplexed emitted optical signals to the internal multiplexer of the next stage, continuing until the emitted optical signals of N wavelength bands are multiplexed into a one-path composite emitted optical signal.

[0036] In one possible implementation, the internal demultiplexer unit includes a multi-stage internal demultiplexer, and the internal demultiplexer of each stage demultiplexes the input received optical signal into a corresponding number, and transmits the demultiplexed optical signal to the internal demultiplexer of the next stage, continuing until the received emitted optical signal of one path is demultiplexed into received optical signals of N wavelength bands.

[0037] In one possible implementation, the N wavelength bands of the emitted optical signal are the first N wavelength bands in the entire wavelength range generated by the color laser, and the N wavelength band ranges of the received optical signal are the subsequent N wavelength bands following the first N wavelength bands.

[0038] In one possible implementation, the N wavelength bands of the received optical signal are the first N wavelength bands in the entire wavelength range generated by the color laser, and the N wavelength bands of the emitted optical signal are the subsequent N wavelength bands following the first N wavelength bands.

[0039] In one possible implementation, the launch box BOX, the receiving box BOX and the external multiplexer / demultiplexer are packaged into an overall BOX, and the overall BOX is connected to the core switch in a hot-plug manner.

[0040] In one possible implementation, the overall box has gold fingers and optical fiber ports, the overall box is connected to the core switch via the gold fingers, and the optical fibers are used to insert optical fibers that are connected to the external multiplexer / demultiplexer.

[0041] In one possible implementation, the spacing between two adjacent wavelength bands emitted by the color laser module is n, the N wavelength bands of the emitted optical signal are consecutive wavelength bands spaced apart by xn, and the N wavelength bands of the received optical signal are consecutive wavelength bands spaced apart by xn, where x is a positive integer.

[0042] In one possible implementation, the color lasers in the color laser module are either coarse wavelength division multiplexing (CWDM) lasers or dense wavelength division multiplexing (DWDM) lasers. [Brief explanation of the drawings]

[0043] In order to more clearly explain the technical solutions in the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. It is obvious that the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts. [Figure 1] 1 is a structural schematic diagram of a signal conversion module according to an embodiment of the present application; [Figure 2] FIG. 2 is a schematic diagram of a corresponding relationship between a first electrical signal and a first optical signal according to an embodiment of the present application. [Figure 3] FIG. 10 is a schematic diagram of a corresponding relationship between a second electrical signal and a second optical signal according to an embodiment of the present application. [Figure 4] 1 is a structural schematic diagram of a processing unit according to an embodiment of the present application; [Figure 5] FIG. 2 is another structural schematic diagram of a processing unit according to an embodiment of the present application; [Figure 6] FIG. 10 is yet another structural schematic diagram of a processing unit according to an embodiment of the present application; [Figure 7] FIG. 2 is a further structural schematic diagram of a processing unit according to an embodiment of the present application; [Figure 8] FIG. 2 is a further structural schematic diagram of a processing unit according to an embodiment of the present application; [Figure 9] 1 is a schematic diagram of the working principle of a filter according to an embodiment of the present application; [Figure 10] 1 is a structural schematic diagram of a processing unit according to an embodiment of the present application; [Figure 11] 1 is a schematic diagram of the architecture of optical fiber transmission through a core switch of the related art; [Figure 12] 1 is an integrated color light module according to an embodiment of the present application; [Figure 13] 1 is a schematic diagram of the connection between an integrated color light optical module and a core switch according to an embodiment of the present application; [Figure 14] 1 is a schematic diagram of a remote access module connected to an integrated color light module in an embodiment of the present application. [Figure 15] 1 is a structural schematic diagram of an apartment complex network according to an embodiment of the present application; [Figure 16] 1 is a schematic diagram of the connections of the assemblies of an apartment complex network according to an embodiment of the present application; [Figure 17] 1 is a schematic diagram of the interaction process of each assembly of an apartment complex network according to an embodiment of the present application; [Figure 18] FIG. 2 is another schematic diagram of the interaction process of each assembly of the housing complex network according to an embodiment of the present application; [Figure 19] 1 is a structural schematic diagram of a core switch according to an embodiment of the present application; [Figure 20] 1 is a structural schematic diagram of an indoor switch according to an embodiment of the present application; [Figure 21] 1 is a flow chart schematic diagram of a signal conversion method according to an embodiment of the present application; [Figure 22] 1 is a flow chart schematic diagram of another signal conversion method according to an embodiment of the present application; [Figure 23] 1 is a structural schematic diagram of a signal conversion device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0044] In the following examples of this application, "and / or" describes a relationship between related objects and indicates that a three-way relationship may exist. For example, A and / or B may represent A alone, a combination of A and B, or B alone, where A and B may be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of" or similar expressions refers to any combination of these items, including any combination of single or multiple items. For example, "at least one of a, b, or c" may represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c may be singular or plural. The singular expressions "a," "one," "the," "the," "the," and "the" are intended to include expressions such as "one or more," unless the context clearly dictates otherwise. Unless otherwise specified, ordinal numbers such as "first" and "second" referred to in the examples of the present application are intended to distinguish between multiple objects and are not intended to limit the order, timing, priority, or importance of the multiple objects.

[0045] References in the specification of this application such as "in one embodiment" or "in some embodiments" mean that one or more embodiments of this application include the particular feature, structure, or characteristic described in connection with that embodiment. Thus, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. appearing in various places throughout this specification are not necessarily all referring to the same embodiment and mean "one or more, but not all embodiments," unless specifically emphasized otherwise. The terms "comprise," "include," "includes," "having," and variations thereof mean "including, but not limited to," unless specifically emphasized otherwise.

[0046] In order to clarify the purpose, technical solution and advantages of this application, the present application will be described in more detail below in conjunction with the drawings, and it is obvious that the described embodiments are only some of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this application without any creative efforts fall within the scope of protection of this application.

[0047] With the development of communication technology, the number of network access users is increasing, and the user's speed requirements for network data transmission are also increasing. Therefore, a three-layer networking architecture including core layer network equipment, aggregation layer network equipment, and access layer network equipment is widely used and applied in network design to provide users with a secure, reliable, scalable, economical, and efficient Internet. Here, the aggregation layer network equipment, as a physical entity in the aggregation layer, mainly plays the role of aggregating data from the access layer network equipment and forwarding it to the core layer network equipment, thereby reducing the burden on the core layer network equipment.

[0048] In a three-tier network architecture, core layer network devices are usually deployed in data center machine rooms in places such as residential complexes and hospitals, aggregation layer network devices are usually active devices and generally deployed in low-voltage machine rooms in each building in places such as residential complexes and hospitals, and access layer network devices are usually deployed in low-voltage machine rooms or on each floor of each building in places such as residential complexes and hospitals. When a large number of aggregation layer network devices are deployed in the low-voltage machine room area, active power supply is required, so the requirements for the low-voltage machine room are often high, and there are certain hidden drawbacks in deployment and operation maintenance. For example, if there is no low-voltage machine room in places such as residential complexes and hospitals or the environment of the low-voltage machine room is poor, the deployment of aggregation layer network devices is impossible and applicability is poor; or if aggregation layer network devices need to share the area of ​​the low-voltage machine room with other devices, there will be problems such as high-voltage management, operation and maintenance authority, and equipment clutter.

[0049] The embodiments of the present application provide a signal conversion module and a signal conversion method for solving the problem of high complexity of deployment in low-voltage machine rooms. The embodiments of the present application will be described in more detail below in conjunction with the drawings of the specification.

[0050] FIG. 1 shows a signal conversion module according to an embodiment of the present application, including a communication unit 101, a conversion unit 102, and a processing unit 103, wherein the communication unit 101 is used for receiving at least two-path first electrical signals, the conversion unit 102 is used for converting the at least two-path first electrical signals into at least two-path first optical signals corresponding to different wavelengths, the processing unit 103 is used for multiplexing the at least two-path first optical signals into a first mixed optical signal, and the communication unit 101 is further used for transmitting the first mixed optical signal.

[0051] In one possible implementation, the signal conversion module can be installed on the aggregation layer network device side. Because the signal conversion module is a passive network device and does not need to be installed in a dedicated low-voltage machine room, the signal conversion module of this application can reduce the operating and maintenance costs and difficulties of the low-voltage machine room and has strong applicability. Furthermore, because the signal conversion module can be installed in an indoor machine room, it is not affected by external temperature, humidity, or lightning, reducing the impact of natural environments, improving the service life of the signal conversion module, and reducing replacement and maintenance costs.

[0052] In one possible implementation, the communication unit 101 is used to receive at least two paths of first electrical signals transmitted from at least two communication devices (eg, access switches).

[0053] In one possible implementation, the communication unit 101 is used to transmit the first mixed optical signal into an optical fiber.

[0054] At the same time, the core layer network equipment also needs to be similarly configured to work with the aggregation layer network equipment. Optical modules and wavelength division multiplexing / demultiplexing devices used for optical-electrical conversion may be installed on the core layer network equipment. However, installing both types of devices on the core layer network equipment simultaneously increases the number of devices, making deployment and operation maintenance more complex. At the same time, a large number of optical fibers must be installed between the optical modules and wavelength division multiplexing / demultiplexing devices inserted into the core layer network equipment, making deployment more complex.

[0055] In one possible implementation, the signal conversion module is installed on the core layer network equipment side. do.Compared with separately deploying optical modules and wavelength division multiplexing / demultiplexing devices in core-layer network equipment, integrating a communication unit, a conversion unit, and a processing unit into a single signal conversion module reduces the number of devices deployed in the core-layer network equipment and the number of optical fibers deployed between the optical modules in the core-layer network equipment and the wavelength division multiplexing / demultiplexing devices, simplifying operation and maintenance. At the same time, because the signal conversion module is a passive network device, it does not need to be deployed in a dedicated low-voltage machinery room. This reduces the operational and maintenance costs and difficulties of the low-voltage machinery room, making the signal conversion module more applicable. Furthermore, because the signal conversion module can be deployed in an indoor machinery room, it is not affected by external temperature, humidity, or lightning, reducing environmental impacts, improving the service life of the signal conversion module, and reducing replacement and maintenance costs.

[0056] In one possible implementation, the communication unit 101 is used to receive at least two paths of first electrical signals transmitted from a communication device (eg, a core switch).

[0057] In one possible implementation, the at least two-path first electrical signals and the at least two-path first optical signals have a one-to-one correspondence. For example, as shown in FIG. 2, the conversion unit 102 receives three-path first electrical signals, namely, a first electrical signal 1, a first electrical signal 2, and a first electrical signal 3, from the communication unit 101, and then the conversion unit 102 converts the first electrical signal 1 into a first optical signal 1, the conversion unit 102 converts the first electrical signal 2 into a first optical signal 2, and the conversion unit 102 converts the first electrical signal 3 into a first optical signal 3, where the first optical signal 1, the first optical signal 2, and the first optical signal 3 have different wavelengths.

[0058] In one possible implementation, based on the wavelength range of Coarse Wavelength Division Multiplexing (CWDM), the wavelength range of the first optical signal is 1271 to 1411 nanometers, and the central wavelength interval corresponding to the at least two-pass first optical signal is 20 nanometers. Of course, the wavelength interval may be other ranges, and the present application is not limited thereto. Based on the wavelength range of Dense Wavelength Division Multiplexing (DWDM), the wavelength range of the first optical signal is 1525 to 1565 nanometers, and the wavelength interval corresponding to the at least two-pass first optical signal is 0.2 to 1.2 nanometers, and specifically, may be 0.8 nanometers. Of course, the wavelength interval may be other ranges, and the present application is not limited thereto.

[0059] In one possible implementation, based on the wavelength range of coarse wavelength division multiplexing technology, the communication unit 101 can receive eight-path first electrical signals, and the conversion unit 102 converts the eight-path first electrical signals into eight-path first optical signals, where the wavelength of the first optical signal of the first pass is 1271 nanometers, the wavelength of the first optical signal of the second pass is 1291 nanometers, the wavelength of the first optical signal of the third pass is 1311 nanometers, the wavelength of the first optical signal of the fourth pass is 1331 nanometers, the wavelength of the first optical signal of the fifth pass is 1351 nanometers, the wavelength of the first optical signal of the sixth pass is 1371 nanometers, the wavelength of the first optical signal of the seventh pass is 1391 nanometers, and the wavelength of the first optical signal of the eighth pass is 1411 nanometers.

[0060] In one possible implementation, based on the wavelength range and wavelength spacing of the CWDM technology, the communication unit 101 can also receive nine paths of first electrical signals, specifically, the communication unit 101 can receive any number of first electrical signals less than nine paths.

[0061] In one possible implementation, based on the wavelength range and wavelength spacing of DWDM technology, the communication unit 101 can also receive 80 paths of first electrical signals, specifically, the communication unit 101 can receive any number of first electrical signals less than 80 paths.

[0062] Of course, the present application is not limited to wavelength ranges, and the present application may also use wavelength ranges of Multi-Wavelength Division Multiplexing (abbreviated as MWDM) or other types of wavelength division multiplexing technology.

[0063] In one possible implementation, the communication unit 101 is further used for receiving a second mixed optical signal, the processing unit 103 is further used for demultiplexing the second mixed optical signal into at least two-path second optical signals each corresponding to a different wavelength, the conversion unit 102 is further used for converting the at least two-path second optical signals into at least two-path second electrical signals, and the communication unit 101 is further used for transmitting the at least two-path second electrical signals.

[0064] In one possible implementation, the communication unit 101 receives the second mixed optical signal from the optical fiber.

[0065] In one possible implementation, when the signal conversion module is installed on the aggregation layer network equipment side, the communication unit 101 transmits the at least two-path second electrical signal to at least two-path communication equipment, such as an access switch.

[0066] In one possible implementation, when the signal conversion module is installed on the core layer network equipment side, the communication unit 101 transmits at least two paths of the second electrical signal to the communication equipment, such as a core switch.

[0067] In one possible implementation, the first mixed optical signal and the second mixed optical signal are simultaneously transmitted on one optical fiber, that is, the optical signal is simultaneously received and transmitted on one optical fiber.

[0068] The above solution may be implemented by a signal conversion module or a part of a signal conversion module, and there is no need to deploy the signal conversion module in a dedicated low-voltage machinery room (some organizations even do not have a low-voltage machinery room, and if there is no low-voltage machinery room or the environment of the low-voltage machinery room is poor, deployment cannot be carried out and applicability is poor). Therefore, the signal conversion module of the present application can reduce the operating and maintenance costs and difficulties of the low-voltage machinery room, has strong applicability, and because the signal conversion module can be deployed in an indoor machinery room, the signal conversion module is not affected by external temperature, humidity or lightning weather, and reduces the impact of the natural environment, improves the service life of the signal conversion module, and reduces replacement and maintenance costs. In addition, the signal conversion module in the embodiments of the present application converts multi-path electrical signals into single-path mixed optical signals using an internal conversion unit, which can significantly reduce the number of connections and networking complexity between the optical modules and wavelength division multiplexing / demultiplexing equipment on the core layer network equipment side compared to the method of separately deploying optical modules and wavelength division multiplexing / demultiplexing equipment on the core layer network equipment side, simplify the layout of optical fiber connections, reduce the networking space occupied, further reduce construction costs, improve maintainability, and improve product quality reliability.

[0069] In one possible implementation, the at least two-path second electrical signal and the at least two-path second optical signal have a one-to-one correspondence. For example, as shown in FIG. 3, the conversion unit 102 receives three-path second optical signals, namely, second optical signal 4, second optical signal 5 and second optical signal 6, from the processing unit 103, and the conversion unit 102 converts the second optical signal 4 into a second electrical signal 4, the conversion unit 102 converts the second optical signal 5 into a second electrical signal 5, and the conversion unit 102 converts the second optical signal 6 into a second electrical signal 6, where the second optical signal 4, the second optical signal 5 and the second optical signal 6 have different wavelengths.

[0070] In one possible implementation, based on the wavelength range of CWDM technology, the wavelength range of the second optical signal is 1431 to 1571 nanometers, and the wavelength interval corresponding to the at least two-pass second optical signal is 20 nanometers, of course, the above wavelength interval may be other ranges, and this application is not limited thereto. Based on the wavelength range of DWDM technology, the wavelength range of the second optical signal is 1570 to 1610 nanometers, and the wavelength interval corresponding to the at least two-pass first optical signal may be 0.2 to 1.2 nanometers, specifically 0.8 nanometers.

[0071] In one possible implementation, based on the wavelength range of CWDM technology, the communication unit 101 receives the second mixed optical signal, and the processing unit 103 demultiplexes the second mixed optical signal into eight-pass second optical signals, where the wavelength of the second optical signal of the first pass is 1431 nanometers, the wavelength of the second optical signal of the second pass is 1451 nanometers, the wavelength of the second optical signal of the third pass is 1471 nanometers, the wavelength of the second optical signal of the fourth pass is 1491 nanometers, the wavelength of the second optical signal of the fifth pass is 1511 nanometers, the wavelength of the second optical signal of the sixth pass is 1531 nanometers, the wavelength of the second optical signal of the seventh pass is 1551 nanometers, and the wavelength of the second optical signal of the eighth pass is 1571 nanometers.

[0072] In one possible implementation, based on the wavelength range and wavelength spacing of the CWDM technology, the processing unit 103 demultiplexes the second mixed optical signal into a nine-path second optical signal, and the present application does not limit the number of paths after the second mixed optical signal is demultiplexed.

[0073] In one possible implementation, based on the wavelength range and wavelength spacing of the DWDM technology, the processing unit 103 can further demultiplex the second mixed optical signal into an 80-path second optical signal, and the present application does not limit the number of paths after the second mixed optical signal is demultiplexed.

[0074] Of course, the present application is not limited to wavelength ranges either, and the present application may also use wavelength ranges of MWDM or other types of wavelength division multiplexing techniques.

[0075] 4, the processing unit 103 includes a first sub-processing unit 1031, a second sub-processing unit 1032, and a third sub-processing unit 1033, where the first sub-processing unit 1031 is used to multiplex the first sub-optical signals and the second sub-optical signals of at least two paths of the first optical signal into a third mixed optical signal, the second sub-processing unit 1032 is used to multiplex the third sub-optical signals and the fourth sub-optical signals of at least two paths of the first optical signal into a fourth mixed optical signal, and the third sub-processing unit 1033 is used to multiplex the third mixed optical signal and the fourth mixed optical signal into the first mixed optical signal. Here, the type of the third sub-processing unit is a multiplexer (abbreviated as MUX), and it can also be other assemblies including a MUX module, such as a device using coarse wavelength division multiplexing technology or a device using dense wavelength division multiplexing technology. In this solution, the processing unit is divided into multiple sub-processing units, and each sub-processing unit completes multiplexing of a part of the optical signals, which can reduce the complexity of the manufacturing process.

[0076] 5, the processing unit 103 includes a fourth sub-processing unit 1034, a fifth sub-processing unit 1035, and a sixth sub-processing unit 1036, where the fourth sub-processing unit 1034 is used to demultiplex the second mixed optical signal into a sixth mixed optical signal and a seventh mixed optical signal, the fifth sub-processing unit 1035 is used to demultiplex the sixth mixed optical signal into a fifth sub-optical signal and a sixth sub-optical signal in at least two passes of the second optical signal, and the sixth sub-processing unit 1036 is used to demultiplex the seventh mixed optical signal into a seventh sub-optical signal and an eighth sub-optical signal in at least two passes of the second optical signal. Here, the type of the fourth sub-processing unit is a demultiplexer (abbreviated as DEMUX), and it can also be other assemblies including a DEMUX module, such as a device using coarse wavelength division multiplexing technology or a device using dense wavelength division multiplexing technology.

[0077] In one possible implementation, the structure of the processing unit 103 will be described taking as an example that the communication unit 101 can receive eight paths of the first electrical signal.

[0078] In one possible implementation, the structural schematic of the processing unit 103 includes an 8:1 multiplexer 201, a 1:8 demultiplexer 202, and a 3-port CWDM 203, as shown in FIG.

[0079] Here, the communication unit 101 is used to receive eight-path first electrical signals. The conversion unit 102 is used to convert the eight-path first electrical signals into eight-path first optical signals, which are respectively a first optical signal of the first path having a wavelength of λ1, a first optical signal of the second path having a wavelength of λ2, a first optical signal of the third path having a wavelength of λ3, a first optical signal of the fourth path having a wavelength of λ4, a first optical signal of the fifth path having a wavelength of λ5, a first optical signal of the sixth path having a wavelength of λ6, a first optical signal of the seventh path having a wavelength of λ7, and a first optical signal of the eighth path having a wavelength of λ8. The 8:1 multiplexer 201 in the processing unit 103 is used to multiplex the eight-path first optical signals into a first mixed optical signal. The three-port CWDM device 203 in the processing unit 103 is used to receive the first mixed optical signal from the 8:1 multiplexer 201 and transmit the first mixed optical signal to the communication unit 101. Here, the 203 unit may use a MUX2:1 / DEMUX1:2 in addition to a 3-port CWDM device, and of course may also be other equipment, for example, a single device that transmits and receives optical signals, and this application is not limited thereto.

[0080] The communication unit 101 is further used to receive a second mixed optical signal. The three-port CWDM device 203 in the processing unit 103 is further used to receive the second mixed optical signal from the communication unit 101 and send the second mixed optical signal to the 1:8 demultiplexer 202. The 1:8 demultiplexer 202 in the processing unit 103 is further used to demultiplex the second mixed optical signal into eight-path second optical signals, respectively, a first-path second optical signal having a wavelength of λ9, a second-path second optical signal having a wavelength of λ10, and a third-path second optical signal having a wavelength of λ11. 10 The second optical signal of the second path has a wavelength of λ 11 The second optical signal of the third path has a wavelength of λ 12 The second optical signal of the fourth path has a wavelength of λ 13 The second optical signal of the fifth pass has a wavelength of λ 14 The second optical signal of the sixth path has a wavelength of λ 15 The second optical signal of the seventh pass has a wavelength of λ 16The conversion unit 102 is further used to convert the eight-path second optical signal into eight-path second electrical signals.

[0081] In another possible implementation, the structural schematic diagram of the processing unit 103 includes two 4:1 multiplexers, which are a first 4:1 multiplexer 301 and a second 4:1 multiplexer 302 respectively, two 1:4 demultiplexers, which are a first 1:4 demultiplexer 303 and a second 1:4 demultiplexer 304 respectively, and a 5-port CWDM device 305, as shown in FIG. Here, the first 4:1 multiplexer 301 corresponds to the first sub-processing unit 1031, the second 4:1 multiplexer 302 corresponds to the second sub-processing unit 1032, the first 1:4 demultiplexer 303 corresponds to the fifth sub-processing unit 1035, and the second 1:4 demultiplexer 304 corresponds to the sixth sub-processing unit 1036, and the CWDM device 305 corresponds to the third sub-processing unit 1033 and the fourth sub-processing unit 1034. Here, the 305 unit may be a 5-port CWDM device as well as a MUX4:1 / DEMUX1:4, and of course, it may also be other devices, such as a device for transmitting and receiving optical signals, and the present application is not limited thereto.

[0082] In one possible implementation, the communication unit 101 is used to receive eight-path first electrical signals, and the conversion unit 102 is used to convert the eight-path first electrical signals into eight-path first optical signals, where the wavelengths of the eight-path first optical signals are λ1, λ2, λ3, λ4, λ5, λ6, λ7 and λ8, respectively. The first 4:1 multiplexer 301 in the processing unit 103 is used to multiplex the first optical signals corresponding to λ1, λ2, λ3 and λ4, respectively, into a third mixed optical signal, and the second 4:1 multiplexer 302 in the processing unit 103 is used to multiplex the first optical signals corresponding to λ5, λ6, λ7 and λ8, respectively, into a fourth mixed optical signal, and the third mixed optical signal and the fourth mixed optical signal are transmitted to the five-port CWDM device 305, which multiplexes the third mixed optical signal and the fourth mixed optical signal into a first mixed optical signal and sends the first mixed optical signal to the communication unit 101.

[0083] In one possible implementation, the communication unit 101 is further used to receive the second mixed optical signal, the 5-port CWDM device 305 in the processing unit 103 is further used to demultiplex the second mixed optical signal into a sixth mixed optical signal and a seventh mixed optical signal, and the first 1:4 demultiplexer 303 in the processing unit 103 is further used to demultiplex the sixth mixed optical signal into λ, λ 10 , λ 11 and λ 12 and a second 1:4 demultiplexer 304 in the processing unit 103 is used to demultiplex the seventh mixed optical signal into a second optical signal corresponding to λ 13 , λ 14 , λ 15 and λ 16 The conversion unit 102 is further used to convert the eight-path second optical signals into eight-path second electrical signals.

[0084] In another possible implementation, the structural schematic diagram of the processing unit 103 includes two 4:1 multiplexers, which are a first 4:1 multiplexer 401 and a second 4:1 multiplexer 402 respectively, two 1:4 demultiplexers, which are a first 1:4 demultiplexer 403 and a second 1:4 demultiplexer 404 respectively, a 2:1 multiplexer 405, a 1:2 demultiplexer 406, and a three-port CWDM device 407, as shown in FIG. Here, the first 4:1 multiplexer 401 corresponds to the first sub-processing unit 1031, the second 4:1 multiplexer 402 corresponds to the second sub-processing unit 1032, the 2:1 multiplexer 405 corresponds to the third sub-processing unit 1033, the first 1:4 demultiplexer 403 corresponds to the fifth sub-processing unit 1035, the second 1:4 demultiplexer 404 corresponds to the sixth sub-processing unit 1036, and the 1:2 demultiplexer 406 corresponds to the fourth sub-processing unit 1034. Here, the 407 unit may be a MUX2:1 / DEMUX1:2 in addition to a 3-port CWDM device, and of course may be other equipment, for example, a device that transmits and receives optical signals, and the present application is not limited thereto.

[0085] In one possible implementation, the communication unit 101 is used to receive eight-path first electrical signals, and the conversion unit 102 is used to convert the eight-path first electrical signals into eight-path first optical signals, where the wavelengths of the eight-path first optical signals are λ1, λ2, λ3, λ4, λ5, λ6, λ7 and λ8, respectively. The first 4:1 multiplexer 401 in the processing unit 103 is used to multiplex the first optical signals corresponding to λ1, λ2, λ3 and λ4, respectively, into a third mixed optical signal, the second 4:1 multiplexer 402 in the processing unit 103 is used to multiplex the first optical signals corresponding to λ5, λ6, λ7 and λ8, respectively, into a fourth mixed optical signal, the third mixed optical signal and the fourth mixed optical signal are transmitted to the 2:1 multiplexer 405, which multiplexes the third mixed optical signal and the fourth mixed optical signal into a first mixed optical signal, and transmits the first mixed optical signal to the three-port CWDM device 407, which sends the first mixed optical signal to the communication unit 101.

[0086] In one possible implementation, the communication unit 101 is further used to receive and transmit the second mixed optical signal to a three-port CWDM device 407. The three-port CWDM device 407 is used to receive and transmit the second mixed optical signal to a 1:2 demultiplexer 406. The 1:2 demultiplexer 406 is used to demultiplex the second mixed optical signal into a sixth mixed optical signal and a seventh mixed optical signal. The first 1:4 demultiplexer 403 demultiplexes the sixth mixed optical signal into a sixth mixed optical signal and a seventh mixed optical signal. 10 , λ 11 and λ 12 The second 1:4 demultiplexer 404 is used to demultiplex the seventh mixed optical signal into second optical signals corresponding to λ 13 , λ 14 , λ 15 and λ 16 The conversion unit 102 is further used to convert the eight-path second optical signals into eight-path second electrical signals.

[0087] In one possible implementation, the communication unit 101 is further used to receive the second mixed optical signal, specifically, a fifth mixed optical signal including the second mixed optical signal and the interference optical signal, and the processing unit 103 includes a filter for filtering the interference optical signal, which can effectively remove the interference optical signal and obtain an accurate second mixed optical signal.

[0088] In one possible implementation, a single filter is used to filter the interference signal, or multiple filters are used to filter the interference signal based on the second mixed optical signal.

[0089] In one possible implementation, the processing unit 103 includes a single filter that passes the second mixed optical signal and reflects the interference optical signal. Specifically, since the second mixed optical signal is an optical signal within a certain range, the processing unit 103 includes a single filter that can pass optical signals within the range of the second mixed optical signal and filter out optical signals outside the range of the second mixed optical signal. Specifically, since the second mixed optical signal includes optical signals of nine wavelengths, the single filter can pass optical signals of the nine wavelengths and filter out optical signals that do not belong to the nine wavelengths.

[0090] In one possible implementation, the processing unit 103 includes multiple types of filters, where some of the multiple types of filters pass one type of second optical signal in the second mixed optical signal and reflect other optical signals, and other filters of the multiple types of filters pass the multiple types of second optical signals in the second mixed optical signal and reflect other optical signals. Specifically, the processing unit 103 includes four types of filters, and the combination of the first filter and the second filter is a filter for a wavelength λ 10 The third filter can pass the second optical signal of the first pass corresponding to the wavelength λ 10 From λ 12and a fourth filter may pass second optical signals on a first pass corresponding to the remaining wavelengths in the second mixed optical signal.

[0091] In one possible implementation, the processing unit 103 includes multiple types of filters, where some of the multiple types of filters pass one type of second optical signal in the second mixed optical signal and reflect other optical signals, and another part of the multiple types of filters pass the multiple types of second optical signals in the second mixed optical signal and reflect other optical signals. 10 The second optical signal of the second path has a wavelength of λ 11 The second optical signal of the third path has a wavelength of λ 12 The second optical signal of the fourth path has a wavelength of λ 13 The second optical signal of the fifth pass has a wavelength of λ 14 The processing unit 103 includes four types of filters, the first filter of which can pass the second optical signal of the first pass corresponding to the wavelength λ 9 , and the second filter of which can pass the second optical signal of the first pass corresponding to the wavelength λ 9 . 10 The third filter can pass the second optical signal of the second pass corresponding to the wavelength λ 11 The second optical signal of the third path corresponding to the wavelength λ 12 The fourth filter can pass the second optical signal of the fourth pass corresponding to the remaining wavelength λ in the second mixed optical signal. 13 and λ 14 The second optical signal of the fifth pass and the second optical signal of the sixth pass corresponding to the first and second optical signals can be passed.

[0092] In one possible implementation, the processing unit 103 includes multiple types of filters, each type of filter passing one type of second optical signal in the second mixed optical signal and reflecting other optical signals. Specifically, the processing unit 103 includes multiple types of filters, for example, the optical signal of each path corresponds to one type of filter, which passes the optical signal of the wavelength corresponding to the optical signal of that path and reflects the optical signals of other wavelengths. For example, the second optical signal of the first path has a wavelength of λ9, and the second optical signal of the second path has a wavelength of λ1. 10 When there is a second-pass second optical signal having a wavelength of λ, the processing unit 103 includes two kinds of filters, namely a first filter and a second filter, where the first filter passes the second-pass second optical signal corresponding to the wavelength λ and reflects optical signals of other wavelengths, and the second filter reflects the second optical signal having a wavelength of λ. 10 The second optical signal of the second pass corresponding to the wavelength is passed through, and optical signals of other wavelengths are reflected.

[0093] In one possible implementation, the processing unit 103 includes multiple types of filters, each type of filter passing multiple types of second optical signals in the second mixed optical signal and reflecting other optical signals. For example, the first pass second optical signal with a wavelength of λ 9, the second pass second optical signal with a wavelength of λ 1 , and the second pass second optical signal with a wavelength of λ 2 . 10 The second optical signal of the second path has a wavelength of λ 11 The second optical signal of the third path has a wavelength of λ 12 Then, the processing unit 103 includes two types of filters, a first filter and a second filter, and the first filter is configured to filter the second optical signal of the first pass corresponding to the wavelength λ9 and the second optical signal of the second pass corresponding to the wavelength λ9. 10 The second filter passes the second optical signal of the second pass corresponding to the wavelength and reflects the optical signals of other wavelengths. 11 The second optical signal of the third pass corresponding to the wavelength λ 12 The second optical signal of the fourth pass corresponding to the wavelength is passed through, and optical signals of other wavelengths are reflected.

[0094] In one possible implementation, the filter passes optical signals of a first wavelength range and reflects optical signals of other wavelengths. nThen, the first wavelength range is [λ n -M,λ n +N], where n is a positive integer, and M and N are greater than 0. Illustratively, M and N are 6.5 nanometers, but of course, M and N may be other values, and the present application does not limit the specific values ​​of M and N.

[0095] In one possible implementation, as shown in FIG. 9, a filter passing optical signals of a first wavelength range and reflecting optical signals of other wavelengths means that the transmittance of the filter for optical signals of the first wavelength range is greater than a first filtering threshold and the transmittance of the filter for optical signals of other wavelengths is less than a second filtering threshold. Specifically, the first filtering threshold may be 100% or 90%, or may be any other value, and the present application does not limit this. The second filtering threshold may be 0% or 10%, or may be any other value, and the present application does not limit this.

[0096] In one possible implementation, as shown in FIG. 10, the processing unit 103 includes a common end 501, a reflective end 502, a transmissive end 503, and a λ n wherein the common end 501 is used to receive the second mixed optical signal and the interference optical signal, and the reflecting end 502 is used to reflect the λ n It is used to receive the mixed optical signal after the optical signal corresponding to the wavelength is removed, i.e., λ in the interference optical signal and the second mixed optical signal. n The mixed optical signal after the optical signal corresponding to the wavelength is removed does not pass through the filter and is filtered at the reflection end 502, and the transmission end 503 is the second mixed optical signal corresponding to the wavelength λ n It is used to receive an optical signal corresponding to a wavelength, e.g., λ n represents the wavelength of any one of the second optical signals in the second mixed optical signal, and λ i represents the wavelength of the filtered optical signal, and then the common end is n and λ i and receiving an optical signal corresponding to λn The filter is λ n passing optical signals within a first wavelength range corresponding to wavelengths λ n The filter filters the optical signal λ i The filtered optical signal λ i is the difference λ between the interference optical signal and the second mixed optical signal. n It refers to the mixed optical signal after the optical signal corresponding to the wavelength has been removed.

[0097] In one possible implementation, the signal conversion module according to the embodiment of the present application is an integrated color light module.

[0098] 11 is a schematic diagram of the architecture of optical fiber transmission using a core switch in the related art. In the related art, the link from the core-side network equipment (e.g., core switch) to the inter-building access layer network equipment (e.g., access switch) mainly includes a core switch 111, a conventional hot-plug 16-channel CWDM color light module 112, and a core-side WDM passive wavelength division box 113. The WDM passive wavelength division box 113 is fixed to the switch housing, and two passive wavelength division boxes are inserted into an independent fixed tool frame. core The tool holder is inserted into the switch housing, and the switch housing serves to fix the tool frame.

[0099] The core switch and the access switch are connected via optical modules, optical fibers, and passive wavelength division devices. The core switch generates an electrical signal corresponding to the transmission data, and excites a color laser 1121 in an optical module (e.g., a 16-channel color light module 112) with the electrical signal to generate optical signals of multiple wavelength bands. The optical modules connected to the core switch include multiple 16-channel color light modules 112, and each 16-channel color light module 112 generates an optical signal corresponding to one wavelength band, Therefore, the multiple 16-channel color light modules 112 can generate light signals corresponding to multiple wavelength bands.The optical signals of multiple wavelength bands are multiplexed by the passive multiplexing device 113 to form a one-path composite optical signal. The composite optical signal is transmitted to the wavelength division multiplexing / demultiplexing box of the access switch via an optical fiber connected to the output of the passive multiplexing device 113, forming optical signals of multiple wavelength bands. The optical signals of multiple wavelength bands are converted into electrical signals by a photoelectric detector (PD) connected to the access switch, and then transmitted to the access switch. The color laser 1121 and PD detector are integrated into a hot-pluggable 16-channel CWDM color light module and fixed on the core switch in a pluggable form. The wavelength division multiplexing box uses a WDM passive wavelength division box, which is fixed on an optical fiber distribution frame (ODF) fiber optic frame.

[0100] Each CWDM color light module 112 includes a color laser 1121 and a PD detector 1122. The WDM passive wavelength division box 113 is connected to each CWDM color light module 112 via two interfaces, one interface connected to the color laser 1121 for receiving the optical signal emitted by the color laser 1121, and the other interface connected to the PD detector 1122 for transmitting the demultiplexed optical signal to the PD detector 1122. After receiving the optical signals emitted by the multiple color lasers 1121, the WDM passive wavelength division box 113 multiplexes the multiple optical signals into a one-path mixed optical signal. The WDM passive wavelength division box 113 further demultiplexes the received mixed optical signal into multiple optical signals and transmits them to the PD detectors 1122 in the multiple CWDM color light modules 112, respectively. The WDM passive wavelength division box 113 is connected to the color laser 1121 of the CWDM color light module 112 through a first optical fiber and to the PD detector 1122 through a second optical fiber. The WDM passive wavelength division box 113 belongs to a passive module and does not emit laser light itself. It generally uses PLC (English: Planar Lightwave Circuit) technology to split a single light into multiple lights or combine multiple lights into one light.

[0101] CWDM color light module 1 1 2 can generate optical signals of 16 wavelength bands, and the core switch 111 and the CWDM color light module 112 use a 16-wavelength hot-plug method, and the CWDM color light module 112 and the WDM passive wavelength division box 113 are connected via optical fibers. In FIG. 11, a solution is used in which the CWDM color light module 112, the WDM passive wavelength division box 113 and the switch housing are combined, so that the optical port density of the switch board card is low and the wavelength division function is integrated into the switch board card. not present. In addition, the switch and Hot Plug Connected in this way When the CWDM color light module 112 is connected to the WDM passive wavelength division box 113, a large number of optical fiber jumpers must be used, which increases the complexity of connecting a large number of optical fibers, increases the amount of installation and maintenance work, and reduces maintainability.

[0102] 12, an integrated color light module according to an embodiment of the present application includes a color laser unit 1211 and an internal multiplexer unit 1212 packaged in a launch module 121, where the color laser unit 1211 receives at least two first electrical signals, such as the first first electrical signal of the first path, from the core switch. electricity Signal and first of second pass electricity The internal multiplexer unit 1212 is used to receive signals and convert the received at least two-pass first electrical signals into at least two-pass first optical signals, and the internal multiplexer unit 1212 is used to multiplex the at least two-pass first optical signals generated by the color laser unit 1211 into a first mixed optical signal, where there is a one-to-one corresponding relationship between the first electrical signals and the first optical signals, i.e., the number of the first optical signals is equal to the number of the first electrical signals, and different first optical signals correspond to different wavelengths.

[0103] In one possible implementation, the launch module 121 is a launch box BOX in which a color laser unit 1211 and an internal multiplexer unit 1212 are packaged.

[0104] In one possible implementation, the color laser unit 1211 receives N-path first electrical signals emitted by the core switch and generates N-path first optical signals, where the N-path first optical signals have N different center wavelengths, where N is an integer greater than or equal to 2. The internal multiplexer unit 1212 is used to multiplex the N-path optical signals into a single-path composite emitted optical signal.

[0105] In one possible implementation, the internal multiplexer unit 1212 includes a single-stage internal multiplexer or a multi-stage internal multiplexer. When the internal multiplexer unit 1212 includes a single-stage internal multiplexer, the single-stage internal multiplexer multiplexes the at least two-pass first optical signals into a first mixed optical signal. When the internal multiplexer unit 1212 includes a multi-stage internal multiplexer, the multi-stage internal multiplexer multiplexes the at least two-pass first optical signals at least twice to obtain a first mixed optical signal. The multi-stage internal multiplexer includes a first-stage internal multiplexer and a second-stage internal multiplexer, where the first-stage internal multiplexer multiplexes the received first optical signals of at least two paths into a multi-path mixed optical signal, the first-stage internal multiplexer is plural, and each first-stage internal multiplexer multiplexes the received first optical signals of at least two paths into a single-path mixed optical signal, the second-stage internal multiplexer may be one or plural, and the internal multiplexer unit is two When it has a stage structure, the second-stage internal multiplexer is one, which is used to convert the received mixed optical signal into a first mixed optical signal; when the internal multiplexer unit is larger than the two-stage structure, the second-stage internal multiplexer is multiplexed, and each second-stage internal multiplexer multiplexes the received at least two-pass mixed optical signal into a one-pass mixed optical signal and transmits it to the next-stage multiplexer, and so on until the last second-stage internal multiplexer multiplexes the mixed optical signal into the first mixed optical signal.

[0106] In one possible implementation, the color laser unit 1211 includes multiple color lasers, each of which generates an optical signal of one wavelength band, i.e., an optical signal of one center wavelength. The wavelengths of the optical signals generated by the multiple color lasers are different. For example, when the color laser unit 1211 receives N paths of first electrical signals, the number of color lasers is N, and the color lasers are used to generate N paths of first optical signals. The color lasers may be, but are not limited to, coarse wavelength division multiplexing (CWDM) lasers or dense wavelength division multiplexing (DWDM) lasers. When different types of color lasers are used, the spacing between two corresponding adjacent wavelength bands is different. For example, when using a CWDM laser, the spacing between two adjacent wavelength bands is 20 nm. When a color laser uses DWDM, the interval between two adjacent wavelength bands is less than 20 nm. In one possible embodiment, the interval between two adjacent wavelength bands emitted by the color laser unit is n, the N wavelength bands for emitting optical signals are continuous wavelength bands spaced apart by xn, and the N wavelength bands for receiving optical signals are continuous wavelength bands spaced apart by xn, where x is a positive integer. When x is 1, the interval between each two adjacent wavelength bands among the N wavelength bands is n. For example, in a CWDM laser, the interval between two adjacent wavelength bands is 20 nm, and when x is 2, the N wavelength bands are continuous wavelength bands spaced apart by 40 nm. 。

[0107] In one possible implementation, the center wavelengths of adjacent first optical signals among the N paths are spaced apart by the same wavelength. Based on the wavelength range of CWDM technology, taking N as an example where N is 8, the wavelengths of the first optical signals of the N paths are as follows: the wavelength of the first optical signal of the first path is 1271 nm, the wavelength of the first optical signal of the second path is 1291 nm, the wavelength of the first optical signal of the third path is 1311 nm, the wavelength of the first optical signal of the fourth path is 1331 nm, the wavelength of the first optical signal of the fifth path is 1351 nm, the wavelength of the first optical signal of the sixth path is 1371 nm, the wavelength of the first optical signal of the seventh path is 1391 nm, and the wavelength of the first optical signal of the eighth path is 1411 nm. By placing the first optical signals at adjacent wavelengths and concentrating the wavelength band of the first mixed optical signal within a specific wavelength, the counterpart device can more easily demultiplex the mixed optical signal.

[0108] In one possible implementation, the internal multiplexer unit 1212 is used to multiplex at least two first optical signals and multiplex the at least two first optical signals into a first mixed optical signal. When the number of first optical signals is N, the internal multiplexer unit 1212 can achieve N:1 multiplexing, thereby reducing the number of standalone optical modules used, increasing optical port density, and reducing the number of optical fiber wirings from the core-side color light module to the passive wavelength division device.

[0109] The color light optical module shown in Figure 12 includes a receiving module 122, which is packaged with a PD detector 1222 and an internal demultiplexer unit 1221. The internal demultiplexer unit 1221 is used to demultiplex the received second mixed optical signal into at least two-path second optical signals, and the PD detector 1222 is used to convert the at least two-path second optical signals into at least two-path second electrical signals and transmit the at least two-path second electrical signals to the core switch. Here, there is a one-to-one correspondence between the second electrical signals and the second optical signals, that is, the number of second optical signals is equal to the number of the second electrical signals. two The number of electrical signals is equal to the number of the second optical signals, and the different second optical signals correspond to different wavelengths.

[0110] In one possible implementation, the receiving module 122 is a receiving box BOX in which a PD detector 1222 and an internal demultiplexer unit 1221 are packaged.

[0111] In one possible implementation, the internal demultiplexer unit 1221 demultiplexes the received second mixed optical signal into N-path second optical signals, where the N-path second optical signals have N different center wavelengths, where N is an integer greater than or equal to 2. The PD detector 1222 is used to convert the N-path second optical signals into second electrical signals for transmission to the core switch.

[0112] In one possible implementation, the internal demultiplexer unit 1221 includes a single-stage internal demultiplexer or a multi-stage internal demultiplexer. When the internal demultiplexer unit 1221 includes a single-stage internal demultiplexer, the single-stage internal demultiplexer demultiplexes the second mixed optical signal into at least two-pass second optical signals. reverseWhen the internal demultiplexer unit 1221 includes a multi-stage internal demultiplexer, the multi-stage internal demultiplexer performs demultiplexing on the second mixed optical signal at least twice to obtain at least two-path second optical signals. The multi-stage internal demultiplexer includes a first-stage internal demultiplexer and a second-stage internal demultiplexer, where the first-stage internal demultiplexer demultiplexes the second mixed optical signal into a multi-path mixed optical signal, and the number of first-stage internal demultiplexers is one. There are multiple second-stage internal demultiplexers, and each second-stage internal demultiplexer demultiplexes the received mixed optical signal into a multi-path mixed optical signal or a multi-path second optical signal. When the internal demultiplexer unit has a two-stage structure, each second-stage internal demultiplexer is used to convert the received mixed optical signal into a multi-path second optical signal; when the internal demultiplexer unit has a larger structure than two stages, each second-stage internal demultiplexer demultiplexes the received mixed optical signal into a multi-path mixed optical signal and transmits it to the next-stage internal demultiplexer, and continues until the final-stage internal demultiplexer demultiplexes the mixed optical signal into a second optical signal.

[0113] In one possible implementation, the center wavelengths of adjacent second optical signals among the N paths are spaced apart by the same wavelength. Based on the wavelength range of CWDM technology, taking N as an example where N is 8, the wavelengths of the second optical signals of the N paths are as follows: the wavelength of the second optical signal of the first path is 1431 nm, the wavelength of the second optical signal of the second path is 1451 nm, the wavelength of the second optical signal of the third path is 1471 nm, the wavelength of the second optical signal of the fourth path is 1491 nm, the wavelength of the second optical signal of the fifth path is 1511 nm, the wavelength of the second optical signal of the sixth path is 1531 nm, the wavelength of the second optical signal of the seventh path is 1551 nm, and the wavelength of the second optical signal of the eighth path is 1571 nm. By placing the second optical signal at an adjacent wavelength and concentrating the wavelength band of the second mixed optical signal received by the internal demultiplexer 1221 within a specific wavelength, the internal demultiplexer 1221 can more easily demultiplex the mixed optical signal.

[0114] In one possible implementation, the center wavelengths of the second optical signals of the N paths and the center wavelengths of the first optical signals of the N paths are different from each other, realizing transmission over the same optical fiber.

[0115] 12 further includes an external multiplexer / demultiplexer 123, which is connected to the emitting module 121 and the receiving module 122, and is externally attached to the outside of the emitting module 121 and the receiving module 122. The external multiplexer / demultiplexer 123 is used to transmit the first mixed optical signal multiplexed by the emitting module 121 and to transmit the received second mixed optical signal to the receiving module 122.

[0116] In one possible implementation, the external multiplexer / demultiplexer 123 is connected to the launch box BOX and the receiving box BOX, respectively, and is externally attached to the outside of the launch box BOX and the receiving box BOX, and is used to launch the composite launch optical signal through the same single optical fiber and receive the composite receive optical signal transmitted by the access switch. The external multiplexer receives the composite launch optical signal transmitted by the internal multiplexer unit 1212, multiplexes the composite launch optical signal onto the single optical fiber, and transmits it to the access switch; and receives the composite receive optical signal transmitted by the access switch through the single optical fiber. The external demultiplexer decomposes the composite receive optical signal, and transmits the decomposed composite receive optical signal to the internal demultiplexer unit 1212. 221 Transmit to.

[0117] In one possible implementation, an external multiplexer / demultiplexer 123 is used for transmitting the mixed signals, and the external multiplexer / demultiplexer 123 transmits a first mixed optical signal and receives a second mixed optical signal through the same optical fiber.

[0118] In one possible implementation, the external multiplexer / demultiplexer 123 is used to realize multiplexing and demultiplexing of optical signals in addition to realizing the transmission of mixed signals, i.e., the external multiplexer / demultiplexer 123 has functions similar to those of the internal multiplexer unit 1212 and the internal demultiplexer unit 1221, and realizes multiplexing and demultiplexing of optical signals. In a scenario where multi-stage multiplexing or multi-stage demultiplexing is required, the external multiplexer / demultiplexer 123 may be used to realize the multiplexing and demultiplexing of optical signals. last Multiplexer in the second stage and / or First step Alternatively, if the color light module includes multiple emission modules 121 and multiple reception modules 122, the external multiplexer / demultiplexer 123 may be a multiple firing The module 121 receives a plurality of composite emitted optical signals corresponding to the composite emitted optical signals, and then combines the signals. Multipleand at the same time, the external multiplexer / demultiplexer 123 can be used to transmit the received signal to the access switch. Multiple It can be used to receive the composite received optical signal transmitted by the access switch, demultiplex it, and then transmit it to the internal demultiplexer unit 1221 corresponding to the multiple receiving modules 122 .

[0119] In one possible implementation, the launch module 121 in Figure 12 is a launch box BOX, and the receiving module 122 is a receiving box BOX. For example, assuming that the number N of first optical signals and second optical signals is 8, the internal multiplexer unit 1212 in the launch box BOX includes an 8:1 multiplexer, and the internal demultiplexer 1221 in the receiving box BOX includes a 1:8 demultiplexer. Such an integrated color light optical module includes a two-stage multipath multiplexer (abbreviated as Multiplexer, Mux) and uses three multiplexers / demultiplexers (abbreviated as Multiplexer / Demultiplexer, Mux / Demux) to realize a total of eight channels of the main link, and optical interconnection with the access side can be achieved with just one optical fiber.

[0120] Specifically, the first stage Mux is located in the emission box BOX, and the 8:1 multiplexer inside the emission box BOX is connected to the color laser, and the first stage DeMux is located in the reception box, and the 1:8 demultiplexer inside the reception box is connected to the PD detector.

[0121] The integrated color light module is obtained by a package. , 8-path emission, 8-path reception and WDM technology but Accumulation It has beenThe above-mentioned integrated color light optical module is obtained, and the color laser is a color light LD (English: Laser Diode) laser. The emission box in the device is packaged with an 8-pass color light LD laser. Taking CWDM as an example, the 8-pass color light LD laser includes the first 8 wavelength band channels, the channel spacing is 20nm, and the wavelength bands of each channel are 1271nm, 1291nm, 1311nm, 1331nm, 1351nm, 1371nm, 1391nm, and 1411nm respectively. The receiving box package includes an 8-pass PD detector and includes the last 8 wavelength band channels, the channel spacing is 20nm, and the wavelength bands of each channel are 1431nm, 1451nm, 1471nm, 1491nm, 1511nm, 1531nm, 1551nm, and 1571nm respectively. Optionally, the channels in the first eight wavelength bands are receive channels and the channels in the last eight wavelength bands are transmit channels.

[0122] The second-stage Mux / DeMux is based on the single-fiber bidirectional optical module BIDI (Bidirectional) technology principle. One second-stage Mux / DeMux is externally installed, and the internal 8:1 multiplexer is connected to the second-stage Mux / DeMux via optical fiber, realizing 8-path emission and 8-path reception transmission via a single optical fiber. The second-stage Mux / DeMux is externally installed outside the emission box and reception box package, but is built into the entire box housing package, and includes a 2:1 multiplexer Mux and a 1:2 demultiplexer DeMux. The composite emission optical signal is sent to the other end via a single optical fiber. Equipment After being transmitted to the access switch, the packet interacts with multiple access switches.

[0123] When the internal multiplexer unit 1212 includes a multi-stage internal multiplexer, the number of the first-stage internal multiplexers is plural, and the number of the last-stage internal multiplexer is one, and the internal multiplexer of each stage performs multiplexing of a corresponding number of input emitted optical signals, and transmits the multiplexed emitted optical signals to the next-stage internal multiplexer, continuing until the emitted optical signals of N wavelength bands are multiplexed into a one-path composite emitted optical signal.

[0124] For example, when N is 8, the internal multiplexer unit includes a two-stage internal multiplexer, where the first stage internal multiplexer includes two internal 4:1 multiplexers and the second stage internal multiplexer is one internal 2:1 multiplexer. The internal demultiplexer unit includes a two-stage internal demultiplexer, where the first stage internal demultiplexer includes one internal 1:2 demultiplexer and the second stage internal demultiplexer includes two internal 1:4 demultiplexers.

[0125] Of course, the multi-stage internal multiplexer and the multi-stage internal demultiplexer may have other multi-stage configurations, for example, four internal 2:1 multiplexers in the first stage of the multi-stage internal multiplexer and one 4:1 multiplexer in the second stage, the multi-stage is not limited to two stages and may be three stages, etc., and the multi-stage internal demultiplexer may use the same multi-stage configuration, and no further description will be given here.

[0126] The above-mentioned integrated color light module according to the embodiment of the present application In The transmitting module and the receiving module are integrated with a passive wavelength division function, and the optical signal is multiplexed inside the optical module to realize transmission through a single optical fiber. The integrated optical module simplifies the layout of the optical fiber connection, and the board card Optical ports When increasing density and connecting to the outside, transmission through a single optical fiber is used, which reduces the networking space required, significantly reduces the number of external optical fiber connections and the complexity of the networking, further reducing installation costs, improving maintainability, and improving the reliability of product quality.

[0127] 13 is a schematic diagram of the connection between the integrated color light module and the core switch according to an embodiment of the present application. As shown in FIG. 13, the color light module is packaged in a single overall package box 124, which contains a transmitting module 121, a receiving module 122, and an external multiplexer / demultiplexer 123. The color light module and the core switch are connected in a hot-plug manner.

[0128] In one possible implementation, the emitting module 121 and the receiving module 122 are packaged using independent packaging techniques, and the external multiplexer / demultiplexer 123 is external to the independently packaged emitting module 121 and receiving module 122 but is built into the color light module. The emitting module 121 and the receiving module 122 conform to BOX packaging technology standards and use standard sizes. Packaging using standard packaging techniques and corresponding standard sizes can simplify the packaging process and save packaging costs.

[0129] If the size of the color laser unit 1211 and the internal multiplexer unit 1212 in the emitting module 121, or the size of the internal demultiplexer unit 1221 and the PD detector 1222 in the receiving module 122, is large and the standard size packaging technology cannot meet the packaging requirements, the packaging can be done using a process corresponding to the BOX packaging technology standard, but the size can be customized as needed, for example, non-standard sizes of the housing metal members, optical port connectors, etc. can be customized according to demand to meet the needs of different scenarios.

[0130] The standard BOX packaging technology may be, but is not limited to, 400G QSFP-DD LR8 device technology. coreIt can integrate up to eight small form-factor pluggable (SFP) optical modules, a color light module (including a color laser unit / PD detector), and a WDM passive wavelength division device (internal multiplexer unit / internal demultiplexer unit) into a single package, and connect to the core switch using a pluggable method. This eliminates the need for an optical fiber mounting frame and an external wavelength division multiplexing box on the core switch, reducing the networking space required, significantly reducing the number of external optical fiber connections and networking complexity, further reducing installation costs, improving maintainability, and improving product quality reliability.

[0131] The larger package standard is the chip scale package (CSP). S P), C S This may include, but is not limited to, P2, etc. The accompanying packaging industry chain is mature, and there is a standard protocol called MultiSource Agreement (MSA), which makes large-scale adoption easy.

[0132] When the transmitting module 121 and the receiving module 122 are packaged, metal structural members are used, and optical fibers are built in to connect them, and a fiber winding frame and an LC interface may also be built in. Specifically, an assembled printed circuit board (abbreviated as PCBA, in English) is used.

[0133] In one possible implementation, the entire package box 124 of the color light module package has gold fingers 125 and an optical fiber port on the outside, and the entire package box 124 is connected to the core switch via the gold fingers 125. The optical fiber port is used to connect to an optical fiber for transmitting and receiving the mixed optical signal, and the optical fiber is inserted into the optical fiber port to prevent the optical fiber connection from loosening. The gold fingers 125 may be composed of multiple conductive contacts, whose surfaces are gold-plated, and the multiple conductive contacts are arranged in a finger-like pattern. The color laser unit in the emission module 121 is connected to the core switch via the gold fingers 125 and is used to receive at least two-path first electrical signals emitted by the core switch. The PD detector 1222 in the reception module 122 is connected to the core switch via the gold fingers 125 and is used to transmit at least two-path second electrical signals to the core switch.

[0134] In one possible implementation, the data transmission rates supported by the transmitter module 121 and the receiver module 122 include one of the following transmission rates: 1 Gbit / s, 1.25 Gbit / s, 10 Gbit / s, 25 Gbit / s, and 50 Gbit / s. When different data transmission rates are used, different packaging technologies can be used to package the transmitter module 121 and the receiver module 122, respectively.

[0135] In one possible implementation, the packages of the launch box BOX and the receiving box BOX conform to the N:1 BOX packaging technology standard and use a standard size. That is, if the packaging technology can meet the requirements, the launch box BOX and the receiving box BOX packages are directly implemented using the standard BOX packaging technology and the corresponding standard size. For example, if N is 8 and the data transmission rate supported by the color laser unit is 10 Gbit / s, the launch box BOX and the receiving box BOX packages are implemented using the standard BOX packaging technology and the corresponding standard size. For example, if N is 8 and the data transmission rate supported by the color laser unit is 1.25 Gbit / s, the launch box BOX and the receiving box BOX packages are implemented using the standard BOX packaging technology and the corresponding standard size. For example, if N is 8 and the data transmission rate supported by the color laser unit is 25 Gbit / s, the launch box BOX and the receiving box BOX packages are implemented using the standard BOX packaging technology and the corresponding standard size.

[0136] In one possible implementation, the packages of the emitter box and receiver box conform to the N:1 box packaging technology standard and use customized sizes. For the color laser unit and internal multiplexer, if the internal demultiplexer and PD detector are large enough that standard size packaging technology cannot meet the packaging requirements, the package can be manufactured using a process corresponding to the box packaging technology standard, but the size can be customized as needed, such as customizing non-standard sizes for the housing metal members, optical port connectors, etc. to meet the needs of different scenarios. For example, if N is 8 and the color laser unit supports data transmission rates of 1 Gbit / s, 10 Gbit / s, 25 Gbit / s, or 50 Gbit / s, the emitter box and receiver box can be manufactured using standard box packaging technology and customized sizes. For example, if the N is a value other than 8 and the data transmission rate supported by the color laser unit is 1 Gbit / s, 10 Gbit / s, 25 Gbit / s, or 50 Gbit / s, the packages of the transmitting box and receiving box are realized using standard box packaging technology and customized sizes.

[0137] 14, which is a schematic diagram of a remote access module connected to an integrated color light module in an embodiment of the present application. The remote access module includes a passive wavelength division box 141; Multiple Single color light module 142 and , a plurality of access switches 143;The passive wavelength division box 141 receives the first mixed optical signal transmitted by the color light module, demultiplexes the first mixed optical signal, and transmits each demultiplexed optical signal to the individual color light module 142. The individual color light module 142 is connected to the access switch 143, and transmits the received optical signal to the access switch 143. The individual color light module 142 is fixed by the optical fiber distribution frame 140, which is used to organize the optical fibers. In addition, the individual color light module 142 further receives the optical signal transmitted by the access switch and transmits the received optical signal to the passive wavelength division box 141, which multiplexes the received optical signal into a second mixed optical signal and transmits it to the integrated color light module. In the embodiment of the present application, the remote access module includes the passive wavelength division box 141. Even if it includes Advantageously, the remote light module may include multiple individual color light modules 142 .

[0138] In one possible implementation, the signal conversion module of the present application is applied to an apartment complex network, which refers to a network within an apartment complex (an apartment complex generally includes multiple buildings), for example, networks of institutions such as hospitals, schools, governments, and enterprises may all be called apartment complex networks. Of course, the signal conversion module of the present application may also be applied to other network systems, and the present application is not limited thereto.

[0139] In one possible implementation, as shown in Figure 15, Ku isA three-tiered network architecture is used, including a core layer, an aggregation layer, and an access layer. The core layer is the high-speed switching backbone of the network and plays an important role in connecting the entire network. The aggregation layer is an "intermediary" between the network access layer and the core layer, performing aggregation before workstations access the core layer to reduce the load on the core layer equipment. The access layer provides workstation access to local network segments. In a three-tiered network architecture, core layer switches are typically deployed in the data center equipment room of a complex, aggregation layer switches are typically deployed in the low-power equipment room of each building in the complex, and access layer switches are typically deployed in the low-power equipment room or on each floor of each building in the complex. However, deploying aggregation layer switches in the low-power equipment room can result in one or more of the following problems: (1) Some school buildings were designed a long time ago and do not have a low-voltage machinery room design, so there is no place to install aggregation equipment and it can only be left in the corridor or office; (2) The low-voltage machinery room has a poor environment, such as no air conditioning, close to toilets or special-purpose acid-base rooms, or the external environment where the low-voltage machinery room is located is poor, such as high temperature, high humidity, or frequent lightning strikes.

[0140] In one possible implementation, the signal conversion module of the present application can be integrated with the remote access module in Figure 14 to achieve the function of the aggregation layer. The signal conversion module of the present application is a highly integrated module that can be directly deployed in the data center equipment room of a community network. The signal conversion module of the present application is passive, meaning that there is no need to provide power to the signal conversion module. The signal conversion module of the present application can also be an integrated color light optical module, which may include units such as a color laser, a PD detector, an internal multiplexer, an internal demultiplexer, and an external multiplexer / demultiplexer. Therefore, deploying the signal conversion module of the present application in a community network can solve the problems existing in the low-current equipment room.

[0141] In one possible implementation, the interconnection structure diagram of the assembly of the signal conversion module according to the present application in a two-layer network is as shown in Figure 16. Here, n is 2 or more, and n represents the maximum number of paths of at least two paths of the first optical signal or at least two paths of the second optical signal. For example, the first mixed optical signal emitted from the signal conversion module includes nine paths of the first optical signal, and the second mixed optical signal received by the signal conversion module includes nine paths of the second optical signal, so n is 9. The assembly interconnection structure diagram shown in Figure 16 constitutes an optical fiber transmission system, which includes a core switch, a signal conversion module, a wavelength division multiplexer / demultiplexer, an optical-electrical signal conversion module, and an access switch, The access switch may be an indoor switch.Here, the core switch is used to provide at least two-path first electrical signals to a signal conversion module and receive the at least two-path first electrical signals transmitted by the signal conversion module, and the signal conversion module is used to receive the at least two-path first electrical signals provided by the core switch, generate at least two-path first optical signals based on the at least two-path first electrical signals, multiplex the at least two-path optical signals into a first mixed optical signal, transmit the first mixed optical signal to a multiplexer / demultiplexer, receive a second mixed optical signal transmitted by the multiplexer / demultiplexer, demultiplex the second mixed optical signal into an at least two-path second optical signal, convert the at least two-path second optical signal into at least two-path electrical signals, and transmit the at least two-path electrical signals to the core switch. The wavelength division multiplexer / demultiplexer is used to receive the first multiplexed optical signal transmitted by the signal conversion module, demultiplex the first mixed optical signal into an at least two-path third optical signal, transmit the at least two-path third optical signal to an optical-electrical signal conversion module, receive the at least two-path fourth optical signal transmitted by the optical-electrical signal conversion module, and multiplex the at least two-path fourth optical signal into the second mixed optical signal. The optical-electrical signal conversion module is used to receive the at least two-path third optical signal transmitted by the wavelength division multiplexer / demultiplexer, generate an at least two-path third electrical signal based on the received at least two-path third optical signal, transmit the at least two-path third electrical signal to an access switch, receive the at least two-path fourth electrical signal transmitted by the access switch, generate an at least two-path fourth optical signal based on the at least two-path fourth electrical signal, and transmit the at least two-path fourth optical signal to the wavelength division multiplexer / demultiplexer. The access switch is used to receive the at least two-path third electrical signal transmitted by the optical-electrical signal conversion module and transmit the at least two-path fourth electrical signal to the optical-electrical signal conversion module. The remote access module Multiplexer / Demultiplexer Even if it includes Preferably, the optical-electrical signal conversion module may be a remote optical module.

[0142] In one possible implementation, the interaction process of each assembly from the sending of a first electrical signal from the core switch to the receiving of the first electrical signal by the indoor switch will be described below using FIG. 17 as an example, and the process includes the following steps:

[0143] Step 101: At least one core switch transmits a first electrical signal along at least one path.

[0144] In one possible implementation, a core switch refers to a switch that operates at the core layer.

[0145] Step 102: The signal conversion module receives at least one path of the first electrical signal and converts it into a first mixed optical signal.

[0146] Step 103, the first mixed optical signal is transmitted in an optical fiber.

[0147] Step 104: The wavelength division multiplexer / demultiplexer receives the first mixed optical signal.

[0148] Step 105, a wavelength division multiplexer / demultiplexer demultiplexes the first mixed optical signal into at least one pass first optical signal.

[0149] Step 106: The wavelength division multiplexer / demultiplexer transmits at least one path of the first optical signal to at least one optical-to-electrical signal conversion module.

[0150] In one possible implementation, the optical-electrical signal conversion module refers to an optical-electrical signal conversion module used in the access layer, which can realize the associated conversion between optical signals and electrical signals. For example, one optical-electrical signal conversion module can convert a first optical signal of one path into a corresponding first electrical signal of one path, and can also convert a second electrical signal of one path into a second optical signal of one path.

[0151] Step 107: at least one optical-electrical signal conversion module converts at least one path of the first optical signal into a corresponding at least one path of the first electrical signal.

[0152] Step 108: At least one indoor switch receives the first electrical signal of at least one corresponding path.

[0153] In one possible implementation, the first electrical signal of each path corresponds to one indoor switch, for example, indoor switch 1 receives the first electrical signal of the first path, and indoor switch 2 receives the second electrical signal of the second path.

[0154] In one possible implementation, the interaction process of each assembly from the sending of a second electrical signal from at least one switch to the receiving of at least one path of the second electrical signal by the core switch will be described below with reference to FIG. 18 as an example, and the process includes the following steps:

[0155] Step 201: At least one indoor switch transmits at least one path of a second electrical signal.

[0156] Step 202: At least one optical-electrical signal conversion module converts at least one path of second electrical signals into corresponding at least one path of second optical signals.

[0157] Step 203: At least one optical-electrical signal conversion module transmits at least one path of the second optical signal to a wavelength division multiplexer / demultiplexer.

[0158] Step 204, a wavelength division multiplexer / demultiplexer multiplexes the at least one pass second optical signal into a second mixed optical signal.

[0159] In step 205, the wavelength division multiplexer / demultiplexer transmits the second mixed optical signal into an optical fiber.

[0160] Step 206, the second mixed optical signal is transmitted in an optical fiber.

[0161] Step 207: the signal conversion module receives the second mixed optical signal and converts it into at least one-path second electrical signal.

[0162] Step 208: The core switch receives the second electrical signal of at least one path.

[0163] In one possible implementation, when steps 201 to 208 are performed, steps 101 to 108 may be performed simultaneously.

[0164] In one possible implementation, the signal conversion module according to the present application is not limited to the district network architecture but can also be applied to other switching / routing physical networks.

[0165] In one possible implementation method, a signal conversion module according to the present application can be connected to multiple core switches, and for example, the signal conversion module can receive eight paths of a first electrical signal, and then the signal conversion module can be connected to eight core switches.

[0166] In one possible implementation method, the signal conversion module according to the present application may be integrated in a core switch, as shown in FIG. 19; the optical-electrical signal conversion module according to the present application may be integrated in an indoor switch, as shown in FIG. 20, for example.

[0167] Based on the same technical concept, the present application provides a signal conversion method, which may be performed by a signal conversion module or a part of the signal conversion module. The present application does not limit the execution body of the method. The signal conversion module includes a communication unit, a conversion unit, and a processing unit. Figure 21 is a flowchart schematic diagram of a signal conversion method according to an embodiment of the present application, which includes the following steps:

[0168] Step 301, receiving at least two paths of a first electrical signal.

[0169] Step 302: Converting at least two-pass first electrical signals into at least two-pass first optical signals.

[0170] Here, the first optical signals of the at least two paths correspond to different wavelengths.

[0171] In one possible implementation, based on the wavelength range of the coarse wavelength division multiplexing technology, the wavelength range of the first optical signal is 1271 to 1411 nanometers, and the wavelength interval corresponding to the at least two-pass first optical signal is 20 nanometers, although the above wavelength interval may be other ranges and is not limited thereto. Based on the wavelength range of the dense wavelength division multiplexing technology, the wavelength range of the first optical signal is 1525 to 1565 nanometers, and the wavelength interval corresponding to the at least two-pass first optical signal is 0.2 to 1.2 nanometers, specifically 0.8 nanometers, although the above wavelength interval may be other ranges and is not limited thereto.

[0172] Step 303: multiplexing at least two-pass first optical signals into a first composite optical signal.

[0173] Step 304: Transmitting a first mixed optical signal.

[0174] The above solution can receive at least two-pass first electrical signals and process the at least two-pass first electrical signals, thereby improving the processing efficiency of the at least two-pass first electrical signals.

[0175] In one possible implementation, a plurality of optical signals in the at least two-pass first optical signal are multiplexed into a third mixed optical signal, the remaining plurality of optical signals in the at least two-pass first optical signal are multiplexed into a fourth mixed optical signal, and the third mixed optical signal and the fourth mixed optical signal are multiplexed into the first mixed optical signal. In this method, the at least two-pass first optical signal is divided into two parts, and the first optical signals of the two parts are processed respectively, thereby increasing the efficiency of multiplexing the at least two-pass optical signal into a mixed signal.

[0176] The above solution can be implemented by a signal conversion module or a part of a signal conversion module, and does not require the signal conversion module to be installed in a dedicated low-voltage machinery room (some organizations even do not have a low-voltage machinery room, and if there is no low-voltage machinery room or the environment of the low-voltage machinery room is poor, installation is not possible and applicability is poor), so the signal conversion module of the present application can reduce the operating and maintenance costs and difficulties of the low-voltage machinery room, and is highly applicable. Because the signal conversion module can be installed in an indoor machinery room, the signal conversion module is not affected by external temperature, humidity, or lightning weather, reducing the impact of the natural environment, improving the service life of the signal conversion module, and reducing replacement and maintenance costs.

[0177] In one possible implementation, FIG. 22 is a flow chart schematic diagram of a signal conversion method according to an embodiment of the present application, which includes the following steps:

[0178] Step 401: receiving a second mixed optical signal.

[0179] In one possible implementation, a fifth mixed optical signal including the second mixed optical signal and the interference optical signal is received, and the interference optical signal is filtered.

[0180] In one possible implementation, a single filter is used to filter the interference signal, or multiple filters are used to filter the interference signal based on the second mixed optical signal.

[0181] The above solution can effectively eliminate the interference optical signal and obtain an accurate second mixed optical signal.

[0182] Step 402, demultiplexing the second mixed optical signal into at least two-pass second optical signals.

[0183] Here, the at least two paths of the second optical signal correspond to different wavelengths.

[0184] In one possible implementation method, the second mixed optical signal is demultiplexed into a sixth mixed optical signal and a seventh mixed optical signal, where the sixth mixed optical signal is a portion of the mixed optical signal in the second mixed optical signal and the seventh mixed optical signal is another portion of the mixed optical signal in the second mixed optical signal, the sixth mixed optical signal is demultiplexed into a plurality of optical signals in the at least two-pass second optical signal, and the seventh mixed optical signal is demultiplexed into the remaining plurality of optical signals in the at least two-pass second optical signal.

[0185] In one possible implementation, based on the wavelength range of CWDM technology, the wavelength range of the second optical signal is 1431 to 1571 nanometers, and the wavelength interval corresponding to the at least two-pass second optical signal is 20 nanometers, of course, the above wavelength interval may be other ranges, and this application is not limited thereto. Based on the wavelength range of DWDM technology, the wavelength range of the second optical signal is 1570 to 1610 nanometers, and the wavelength interval corresponding to the at least two-pass first optical signal may be 0.2 to 1.2 nanometers, specifically 0.8 nanometers.

[0186] Step 403: converting the at least two-pass second optical signal into the at least two-pass second electrical signal.

[0187] Step 404: transmitting at least two passes of a second electrical signal.

[0188] The above solution may be implemented by a signal conversion module or a part of a signal conversion module, and there is no need to deploy the signal conversion module in a dedicated low-voltage machinery room (some organizations even do not have a low-voltage machinery room, and if there is no low-voltage machinery room or the environment of the low-voltage machinery room is poor, deployment cannot be carried out and applicability is poor). Therefore, the signal conversion module of the present application can reduce the operating and maintenance costs and difficulties of the low-voltage machinery room, has strong applicability, and because the signal conversion module can be deployed in an indoor machinery room, the signal conversion module is not affected by external temperature, humidity or lightning weather, and reduces the impact of the natural environment, improves the service life of the signal conversion module, and reduces replacement and maintenance costs.

[0189] Based on the same technical concept, an embodiment of the present application provides a signal conversion device 1900, which, as shown in Fig. 23, includes at least one processor 1901 and a memory 1902 connected to the at least one processor. In the embodiment of the present application, a specific connection medium between the processor 1901 and the memory 1902 is not limited, and in Fig. 19, the processor 1901 and the memory 1902 are connected via a bus. The bus may be divided into an address bus, a data bus, a control bus, etc.

[0190] In an embodiment of the present application, the memory 1902 stores instructions executable by at least one processor 1901, and the at least one processor 1901 can perform the above-mentioned signal conversion method by executing the instructions stored in the memory 1902.

[0191] Here, processor 1901 is the control center of signal conversion device 1900, and can connect various parts of the computer equipment using various interfaces and lines, run or execute instructions stored in memory 1902, and perform resource configuration by accessing data stored in memory 1902. Optionally, processor 1901 may include one or more determination units, and processor 1901 may integrate an application processor and a modem processor. Here, the application processor is primarily for processing the operating system, user interface, and application programs, and the modem processor is primarily for processing wireless communications. As can be understood, the modem processor does not need to be integrated into processor 1901. In some embodiments, processor 1901 and memory 1902 may be implemented on the same chip, or in some embodiments, they may each be implemented on separate chips.

[0192] The processor 1901 may be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware assembly, which may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any general processor, etc. The steps of the methods disclosed in connection with the embodiments of the present application may be directly embodied as execution completed by a hardware processor or execution completed by a combination of hardware and software modules in the processor.

[0193] The memory 1902 may be used as a non-volatile computer-readable storage medium to store non-volatile software programs, non-volatile computer-executable programs, and modules. The memory 1902 may include at least one type of storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory, a random access memory (RAM), a static random access memory (SRAM), a programmable read-only memory (PROM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 1902 may be any other computer-accessible medium that can be used to carry or store program code in the form of instructions or data structures, but is not limited thereto. The memory 1902 in the embodiments of the present application may also be a circuit or any device capable of implementing a memory function and used to store program instructions and / or data.

[0194] An embodiment of the present application further provides a computer-readable storage medium, in which a computer-executable program is stored, and the computer-executable program is used to cause a computer to perform the signal conversion method described in any one of the above aspects.

[0195] As will be appreciated by those skilled in the art, embodiments of the present application may be provided as a method, a system, or a computer program product. As such, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. The present application may also take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0196] The present application is described with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, may be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, whereby the instructions executed by the processor of the computer or other programmable data processing device generate an apparatus for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0197] These computer program instructions may be stored in a computer-readable memory that can cause a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture that includes an instruction apparatus that implements the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0198] These computer program instructions may be installed on a computer or other programmable data processing device to cause the computer or other programmable device to perform a series of operational steps to generate a computer-implemented process, whereby the instructions executing on the computer or other programmable device provide steps for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0199] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application intends to include these modifications and variations.

Claims

1. A signal conversion module, a conversion unit for converting the received at least two-path first electrical signals into at least two-path first optical signals each corresponding to a different wavelength; a processing unit for multiplexing the at least two-path first optical signals into a first mixed optical signal.

2. The signal conversion module according to claim 1 , wherein the first electrical signal of the at least two paths is an electrical signal launched by a core switch.

3. the processing unit is further adapted to demultiplex the received second mixed optical signal into at least two-path second optical signals each corresponding to a different wavelength; The signal conversion module of claim 1 , wherein the conversion unit is further used to convert the at least two-pass second optical signal into an at least two-pass second electrical signal.

4. 4. The signal conversion module according to claim 3, wherein the second mixed optical signal is a mixed optical signal obtained by multiplexing a plurality of optical signals emitted by an access switch.

5. The conversion unit a color laser subunit for converting the received at least two-path first electrical signals into at least two-path first optical signals each corresponding to a different wavelength; and a detector subunit for converting the received at least two-path second optical signal into an at least two-path second electrical signal.

6. The processing unit an internal multiplexer subunit for multiplexing the received at least two-path first optical signals into a first mixed optical signal; and an internal demultiplexer subunit for demultiplexing the received second mixed optical signal into at least two-path second optical signals corresponding to different wavelengths.

7. The internal multiplexer subunit comprises: a first stage internal multiplexer for multiplexing the received at least two-path first optical signals into a third mixed optical signal and a fourth mixed optical signal; 7. The signal conversion module of claim 6, further comprising a second stage internal multiplexer for multiplexing said third mixed optical signal and said fourth mixed optical signal into said first mixed optical signal.

8. The internal demultiplexer subunit comprises: a first stage internal demultiplexer module for demultiplexing the received second mixed optical signal into at least a two-pass mixed optical signal; 7. The signal conversion module of claim 6, further comprising: a second stage internal demultiplexer module for demultiplexing the at least two-pass mixed optical signal into a plurality of second optical signals.

9. the processing unit further includes a filter; The signal conversion module of claim 3 , wherein the filter is used to filter an interference signal to obtain the second mixed optical signal.

10. 10. The signal conversion module of claim 9, wherein the filters include a first filter and a second filter, wherein the first filter is used to pass light having a wavelength in a first wavelength band, and the second filter is used to pass light having a wavelength in a second wavelength band, and the first wavelength band and the second wavelength band have different ranges.

11. the signal conversion module further includes a communication unit; The signal conversion module according to claim 3 , wherein the communication unit is used to transmit the first mixed optical signal and / or receive the second mixed optical signal through an optical fiber.

12. The signal conversion module of claim 11 , wherein the communication unit is an external multiplexer / demultiplexer module.

13. The signal conversion module includes: Gold finger connectors for connecting to core switches; 13. The signal conversion module according to claim 1, further comprising an optical fiber interface for connecting to an optical fiber that transmits the first mixed optical signal.

14. 1. A signal conversion method, comprising: receiving at least two paths of a first electrical signal; converting the at least two-pass first electrical signals into at least two-pass first optical signals each corresponding to a different wavelength; multiplexing the at least two-pass first optical signals into a first mixed optical signal; transmitting said first mixed optical signal.

15. The multiplexing of the at least two-path first optical signals into a first mixed optical signal comprises: multiplexing a plurality of optical signals in the at least two-pass first optical signal into a third mixed optical signal; multiplexing the remaining optical signals in the at least two-pass first optical signal into a fourth mixed optical signal; and multiplexing the third mixed optical signal and the fourth mixed optical signal into the first mixed optical signal.

16. The method comprises: receiving a second mixed optical signal; demultiplexing the second mixed optical signal into at least two-pass second optical signals, each corresponding to a different wavelength; converting the at least two-pass second optical signal into an at least two-pass second electrical signal; 15. The method of claim 14, further comprising transmitting the at least two-path second electrical signal.

17. receiving the second mixed optical signal includes: receiving a fifth mixed optical signal including the second mixed optical signal and an interference optical signal; and filtering the interference optical signal.

18. The filtering of the interference optical signal comprises:

20. The method of claim 17, comprising filtering the interference signal with a single filter or filtering the interference signal with multiple filters based on the second mixed optical signal.

19. 1. An optical fiber transmission system, comprising: a core switch for providing at least two-path first electrical signals to a signal conversion module and for receiving at least two-path second electrical signals transmitted by the signal conversion module; a signal conversion module for receiving the at least two-path first electrical signals provided by the core switch, generating at least two-path first optical signals based on the at least two-path first electrical signals, multiplexing the at least two-path optical signals into a first mixed optical signal, transmitting the first mixed optical signal to the remote access module, receiving a second mixed optical signal transmitted by the remote access module, demultiplexing the second mixed optical signal into an at least two-path second optical signal, converting the at least two-path second optical signals into at least two-path second electrical signals, and transmitting the at least two-path second electrical signals to the core switch; a remote access module for receiving the first mixed optical signal transmitted by the signal conversion module, demultiplexing the first mixed optical signal into at least two-path third optical signals, transmitting the at least two-path third optical signals to at least two remote optical modules, receiving at least two-path fourth optical signals transmitted by the at least two remote optical modules, and multiplexing the at least two-path fourth optical signals into the second mixed optical signal; the at least two remote optical modules for receiving the at least two-path third optical signal, generating at least two-path third electrical signal based on the received at least two-path third optical signal, transmitting the at least two-path third electrical signal to at least two access switches, receiving at least two-path fourth electrical signal transmitted by the access switches, generating at least two-path fourth optical signal based on the at least two-path fourth electrical signal, and transmitting the at least two-path fourth optical signal to the at least two remote access modules; and the at least two access switches for receiving the at least two-path third electrical signal transmitted by the remote optical module and transmitting the at least two-path fourth electrical signal to the remote optical module.

20. 19. A computer-readable storage medium having a computer program stored thereon, the computer program being configured, when run, to perform the method of any one of claims 14 to 18.

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