Signal conversion modules, signal conversion methods, optical fiber transmission systems, and computer program products

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] This application relates to the field of telecommunications technology, and more particularly to signal conversion modules, signal conversion methods, optical fiber transmission systems and Computer program products Regarding. [Background technology]

[0002] With the advancement of communication technology, the number of network access users is increasing, and so are users' demands for higher speeds in network data transmission. Therefore, a three-tier 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 the physical entities of the aggregation layer, primarily plays the role of aggregating data from access-layer network equipment and transferring it to core-layer network equipment, thereby reducing the burden on core-layer network equipment. Aggregation-layer network equipment (e.g., aggregation switches) are typically active devices and are generally deployed in low-voltage equipment rooms. When a large number of aggregation switches are deployed in a low-voltage equipment room, active power supply is required, often resulting in high demands on the low-voltage equipment room. [Overview of the Initiative] [Problems that the invention aims to solve]

[0003] This 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 the first aspect, an embodiment of the present application provides a signal conversion module, which includes a conversion unit and a processing unit. The conversion unit is used to convert at least two paths of received first electrical signals into at least two paths of first optical signals corresponding to different wavelengths respectively, and the processing unit is used to multiplex the at least two paths of first optical signals into a first mixed optical signal.

[0005] In the above solution, the conversion unit and the processing unit are integrated into one signal conversion module. When the signal conversion module is deployed, a large amount of operation and maintenance management can be reduced. And because the signal conversion module is a passive network device, there is no need to deploy the signal conversion module in a dedicated weak current machine room (some organizations do not have a weak current machine room at all. In the case of no weak current machine room or a poor environment in the weak current machine room, deployment cannot be carried out, and the applicability is poor). Therefore, the signal conversion module according to the present application can reduce the operation and maintenance cost and difficulty of the weak current machine room, and has strong applicability. Since the signal conversion module can be deployed in an indoor machine room, the signal conversion module is not affected by the external temperature, humidity or lightning weather, reduces the influence of the natural environment, improves the service life of the signal conversion module, and reduces the replacement and maintenance cost.

[0006] In one possible implementation method, the at least two paths of first electrical signals are electrical signals emitted by a core switch. Compared with separately deploying an optical module and a wavelength division multiplexing / demultiplexing device on the core layer network device side, by integrating a communication unit, a conversion unit and a processing unit into one signal conversion module, the number of devices deployed on the core layer network device side can be reduced, and the deployment of optical fibers between the optical module and the wavelength division multiplexing / demultiplexing device on the core layer network device side can be reduced, and the operation and maintenance management is simple.

[0007] In one possible implementation method, the processing unit is further used to demultiplex the received second mixed optical signal into at least two paths of second optical signals corresponding to different wavelengths, and the conversion unit is further used to convert the at least two paths of second optical signals into at least two paths of second electrical signals.

[0008] In one possible implementation method, the second mixed optical signal is multiple a mixed optical signal obtained by multiplexing a plurality of optical signals emitted by an access switch.

[0009] In one possible implementation method, the conversion unit includes a color laser subunit and a detector subunit. The color laser subunit is used to convert the received at least two paths of first electrical signals into at least two paths of first optical signals corresponding to different wavelengths, and the detector subunit is used to convert the received at least two paths of second optical signals into at least two paths of second electrical signals.

[0010] In one possible implementation method, the processing unit includes an internal multiplexer subunit and an internal demultiplexer subunit. The internal multiplexer subunit is used to multiplex the received at least two paths of first optical signals into a first mixed optical signal, and the internal demultiplexer subunit is used to demultiplex the received second mixed optical signal into at least two paths of second optical signals. The at least two paths of optical signals correspond to different wavelengths.

[0011] In one possible implementation method, the internal multiplexer subunit is for multiplexing the received at least two paths of first optical signals into a multi-path mixed optical signal multiple including a first-stage internal multiplexer for multiplexing the received at least two paths of first optical signals into a multi-path mixed optical signal, and a second-stage internal multiplexer for multiplexing the received multi-path mixed optical signal into the first mixed optical signal. Here, the first optical signal consisting of at least two passes includes the first optical signal consisting of at least four passes.By using multi-stage internal multiplexers, each internal multiplexer can complete the multiplexing of a portion of the optical signals, thereby reducing the complexity of the manufacturing process.

[0012] In one possible implementation, the first-stage internal multiplexer is configured to multiplex a plurality of optical signals from the first optical signals of at least two passes into a third mixed optical signal; the first-stage internal multiplexer is further configured to multiplex the remaining plurality of optical signals from the first optical signals of at least two passes 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, receiving multiple For demultiplexing a mixed optical signal into multiple second optical signals multiple Includes a second-stage internal demultiplexer module. Here, the plurality of second optical signals include at least four passes of the second optical signals. A multi-stage internal demultiplexer allows each internal demultiplexer to complete the demultiplexing of a portion of the optical signals, thereby reducing the complexity of the manufacturing process.

[0014] In one possible implementation, the processing unit further includes a filter, which is used to filter out the interference signal to obtain the second mixed optical signal. This solution effectively removes the interference signal and obtains 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 allow light whose wavelength is in a first wavelength band to pass through, and the second filter being used to allow light whose wavelength is in a second wavelength band to pass through, wherein the first wavelength band and the second wavelength band are in 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. By combining multiple filters, filtering performance can be effectively enhanced.

[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 via 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 goldfinger connector for connecting to a core switch and an optical fiber interface for connecting to an optical fiber that transmits the first mixed optical signal. Connecting the signal conversion module and the core switch via the goldfinger connector effectively reduces the number of optical fibers used and facilitates insertion and removal maintenance.

[0020] According to a second aspect, embodiments of the present application provide a signal conversion method which may be performed by a signal conversion module or a portion of a signal conversion module. The present application does not limit the implement body of the method. The method includes receiving a first electrical signal in at least two passes; converting the first electrical signals in at least two passes into first optical signals in at least two passes corresponding to different wavelengths; multiplexing the first optical signals in at least two passes into a first mixed optical signal; and transmitting the first mixed optical signal.

[0021] In the above solution, the signal conversion module may be implemented by a signal conversion module or a part of a signal conversion module, and it is not necessary to deploy the signal conversion module in a dedicated low-voltage machine room (some organizations 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, deployment is not possible and the applicability is poor). Therefore, the signal conversion module according to this application can reduce the operating and maintenance costs and difficulties of a low-voltage machine room, has high applicability, and because the signal conversion module can be deployed in an indoor machine room, the signal conversion module is not affected by external temperature, humidity or weather such as lightning, 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 method, Multiplexing at least two-pass first optical signals into a first mixed optical signal is Multiple optical signals in at least two-pass first optical signals are multiplexed into a third mixed optical signal. What to do and ...and multiplexing the remaining optical signals in the first optical signal of at least two passes into a fourth mixed optical signal. The first optical signal, consisting of at least two passes, is multiplexed into the first mixed optical signal. The third mixed optical signal and the fourth mixed optical signal are multiplexed into the first mixed optical signal. including . Here, the first optical signal consisting of at least two passes includes the first optical signal consisting of at least four passes.

[0023] In the above method, the first optical signal of at least two passes is divided into two parts, and each of the two parts of the first optical signal is processed separately, thereby increasing the efficiency of multiplexing the at least two passes 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-pass second optical signals corresponding to different wavelengths, the at least two-pass second optical signals are converted into at least two-pass second electrical signals, and the at least two-pass second electrical signals are transmitted.

[0025] The above solution may be implemented by a signal conversion module or a portion of a signal conversion module, and the signal conversion module does not need to be deployed in a dedicated low-voltage machine room (some organizations 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, deployment is not possible and the applicability is poor). Therefore, the signal conversion module according to this application can reduce the operating and maintenance costs and difficulties of a low-voltage machine room and has high applicability. Since the signal conversion module can be deployed in an indoor machine room, the signal conversion module is not affected by external temperature, humidity or weather such as lightning, 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 is received, which includes a second mixed optical signal and an interfering optical signal, and the interfering optical signal is filtered.

[0027] The above method effectively removes the interfering optical signal and allows for obtaining an accurate second mixed optical signal.

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

[0029] The above method effectively removes the interfering optical signal and allows for obtaining an accurate second mixed optical signal.

[0030] According to a third aspect, the embodiments of the present application further provide an optical fiber transmission system, the optical fiber transmission system is At least two passes of the first electrical signal are provided to the signal conversion module, Signal conversion module The first of at least two passes sent by two A core switch for receiving electrical signals, The core switch receives the first electrical signal of at least two passes, generates a first optical signal of at least two passes based on the first electrical signal of at least two passes, multiplexes the first optical signal of at least two passes into a first mixed optical signal, transmits the first mixed optical signal to a remote access module, receives a second mixed optical signal transmitted by the remote access module, demultiplexes the second mixed optical module into a second optical signal of at least two passes, and transmits the second optical signal of at least two passes into at least two passes second Convert to an electrical signal, and the at least two passes second A signal conversion module for transmitting electrical signals to the core switch, Includes.

[0031] In one possible implementation, the optical fiber transmission system further includes the remote access module, and the remote access module is The first mixed optical signal transmitted by the signal conversion module is received, the first mixed optical signal is demultiplexed into a third optical signal with at least two passes, the third optical signal with at least two passes is transmitted to at least two remote optical modules, a fourth optical signal with at least two passes is received by the at least two remote optical modules, and the fourth optical signal with at least two passes is multiplexed into the second mixed optical signal. Passive wavelength division box and, The system receives the third optical signal of at least two passes, generates a third electrical signal of at least two passes based on the received third optical signal of at least two passes, transmits the third electrical signal of at least two passes to at least two access switches, receives a fourth electrical signal of at least two passes transmitted by the access switches, generates a fourth optical signal of at least two passes based on the fourth electrical signal of at least two passes, and transmits the fourth optical signal of at least two passes to the Passive wavelength division box The at least two remote optical modules for transmitting to, The aforementioned at least two The remote optical module receives the third electrical signal of at least two passes and the fourth electrical signal of at least two passes at least two It includes the at least two access switches for transmitting to a remote optical module.

[0032] According to the fourth aspect, the embodiments of this application are as follows: Computer program products It further provides that computer-readable instructions are stored in it, and the computer reads the computer-readable instructions, The aforementioned computer program product is When executed, any method of the second embodiment described above is realized. It is configured to .

[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 comprising: an emitter box containing a color laser module and an internal multiplexer; and a receiver box containing a PD detector and an internal demultiplexer unit, wherein the color laser module is driven by an electrical signal transmitted by a core switch and is configured to generate emitted optical signals corresponding to N wavelength bands; the internal multiplexer module is configured to combine the emitted optical signals of the N wavelength bands into a single-pass composite emitted optical signal; the internal demultiplexer unit is configured to demultiplex the received single-pass composite received optical signal into received optical signals of N wavelength bands; and the PD detector is configured to convert the received optical signals of the N wavelength bands into received electrical signals and transmit them to the core switch.

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

[0035] In one possible implementation, the internal multiplexerjoule includes a multi-stage internal multiplexer, each stage of which performs a corresponding number of multiplexing operations on an input emitted optical signal, transmits the multiplexed emitted optical signal to the next stage of the internal multiplexer, and continues until emitted optical signals of N wavelength bands are combined into a single-pass composite emitted optical signal.

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

[0037] In one possible implementation, the N wavelength bands of the emitted light signal are the first N wavelength bands in the entire wavelength range generated by the color laser, and the N wavelength band range of the received light 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, the receiver box, and the external multiplexer / demultiplexer are packaged in an overall box, which is connected to the core switch in a hot-plug manner.

[0040] In one possible implementation, the overall box has a gold finger and an optical fiber port, the overall box is connected to the core switch via the gold finger, and the optical fiber is used to insert an optical fiber that is connected to the external multiplexer / demultiplexer.

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

[0042] In one possible implementation, the color laser in the color laser module is either a coarse wavelength division multiplexing (CWDM) laser or a high-density wavelength division multiplexing (DWDM) laser. [Brief explanation of the drawing]

[0043] To more clearly explain the technical concepts in the embodiments of this application, the following is a brief introduction to the drawings that may be used in the description of the embodiments. Obviously, the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without expending any creative effort. [Figure 1] This is a schematic diagram of the structure of a signal conversion module according to an embodiment of this application. [Figure 2] This is a schematic diagram illustrating the correspondence between a first electrical signal and a first optical signal according to the embodiment of this application. [Figure 3] This is a schematic diagram illustrating the correspondence between a second electrical signal and a second optical signal according to the embodiment of this application. [Figure 4] This is a schematic diagram of the structure of the processing unit according to an embodiment of this application. [Figure 5] This is another schematic diagram of the structure of the processing unit according to the embodiment of this application. [Figure 6] This is yet another schematic diagram of the processing unit according to an embodiment of this application. [Figure 7] This is a further schematic diagram of the structure of the processing unit according to the embodiment of this application. [Figure 8] This is a further schematic diagram of the structure of the processing unit according to the embodiment of this application. [Figure 9] This is a schematic diagram illustrating the operating principle of the filter according to the embodiment of this application. [Figure 10] This is a schematic diagram of the structure of the processing unit according to an embodiment of this application. [Figure 11] This is a schematic diagram of the architecture of optical fiber transmission using a core switch, a related technology. [Figure 12] This is an integrated color light module according to an embodiment of the present application. [Figure 13] This is a schematic diagram of the connection between an integrated color light module and a core switch according to an embodiment of this application. [Figure 14] This is a schematic diagram of a remote access module connected to an integrated color light optical module in an embodiment of this application. [Figure 15] This is a schematic diagram of the structure of a housing complex network according to an embodiment of this application. [Figure 16] This is a schematic diagram of the connections of each assembly in the housing complex network according to the embodiment of this application. [Figure 17] This is a schematic diagram of the interaction process of each assembly in the housing complex network according to the embodiment of this application. [Figure 18] This is another schematic diagram of the interaction process of each assembly in the housing complex network according to the embodiment of this application. [Figure 19] This is a schematic diagram of the structure of a core switch according to an embodiment of this application. [Figure 20] This is a schematic diagram of the structure of an indoor switch according to an embodiment of this application. [Figure 21] This is a schematic flowchart of a signal conversion method according to an embodiment of this application. [Figure 22] This is a schematic flowchart of another signal conversion method according to an embodiment of this application. [Figure 23] This is a schematic diagram of the structure of a signal conversion device according to an embodiment of this application. [Modes for carrying out the invention]

[0044] In the embodiments of this application described below, "and / or" describes the relationship between related objects and indicates that three relationships 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 letter " / " generally indicates that the preceding and succeeding related objects are in an "or" relationship. "At least one of the following" 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 single or plural. The singular expressions "one," "one kind," "the aforementioned," "above," "the," and "this" are intended to include expressions such as "one or more," unless explicitly indicated otherwise in the context. Furthermore, unless otherwise specified, ordinal numbers such as "first," "second," etc., used in reference to the embodiments of this application are for distinguishing between multiple subjects and are not intended to limit the order, timing, priority, or importance of the multiple subjects.

[0045] References such as “one embodiment” or “several embodiments” described in the specification of this application mean that one or more embodiments of this application include certain features, structures, or characteristics described in association with that embodiment. Thus, phrases such as “in one embodiment,” “in several embodiments,” “in several other embodiments,” and “in several other embodiments” appearing in various parts of this specification do not necessarily all refer to the same embodiment, and unless otherwise emphasized, mean “one or more embodiments, but not all embodiments.” The terms “include,” “incorporate,” “have,” and variations thereof mean “include, but not limited to,” unless otherwise emphasized.

[0046] To further clarify the purpose, technical proposal and merits of this application, the following describes this application in more detail, accompanied by drawings. Clearly, the described embodiments are only a selection of embodiments of this application, not all embodiments. All other embodiments derived from the embodiments in this application, without the need for creative effort by a person skilled in the art, are all within the scope of protection of this application.

[0047] With the advancement of communication technology, the number of network access users is increasing, and so are users' demands for higher speeds in network data transmission. Therefore, a three-tier 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 the physical entity of the aggregation layer, primarily plays the role of aggregating data from access-layer network equipment and transferring it to core-layer network equipment, thereby reducing the burden on core-layer network equipment.

[0048] In a three-tier network architecture, core layer network equipment is typically deployed in data center machine rooms in locations such as housing complexes and hospitals. Aggregation layer network equipment, which is typically active, is generally deployed in the low-voltage machine rooms of each building in such locations. Access layer network equipment is typically deployed in the low-voltage machine rooms or on each floor of each building in such locations. When a large number of aggregation layer network devices are deployed in the low-voltage machine room area, active power supply is required, which often places high demands on the low-voltage machine room, and there are certain hidden drawbacks to deployment and operation and maintenance. For example, if there is no low-voltage machine room in a location such as a housing complex or hospital, or if the environment of the low-voltage machine room is poor, it may not be possible to deploy aggregation layer network equipment, resulting in poor applicability. Alternatively, if aggregation layer network equipment needs to share the low-voltage machine room area with other equipment, problems such as power management, operation and maintenance authority, and equipment clutter may arise.

[0049] The embodiments of this application provide a signal conversion module and a signal conversion method to solve the problem of the high complexity of the layout of low-voltage machinery rooms. The embodiments of this application will be described in more detail below with reference to the drawings of the specification.

[0050] Figure 1 shows a signal conversion module according to an embodiment of the present application, comprising a communication unit 101, a conversion unit 102, and a processing unit 103, wherein the communication unit 101 is used to receive at least two-pass first electrical signals, the conversion unit 102 is used to convert at least two-pass first electrical signals into at least two-pass first optical signals corresponding to different wavelengths, the processing unit 103 is used to multiplex at least two-pass first optical signals into a first mixed optical signal, and the communication unit 101 is further used to transmit the first mixed optical signal.

[0051] In one possible implementation, the signal conversion module may be installed on the aggregation layer network equipment side. Since the signal conversion module is a single passive network device and does not need to be deployed in a dedicated low-voltage machine room, the signal conversion module according to this application can reduce the operating and maintenance costs and difficulties of a low-voltage machine room and has high applicability. Furthermore, since the signal conversion module can be deployed in an indoor machine room, it is not affected by external temperature, humidity, or weather such as lightning, reducing the impact of the natural environment, 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-pass first electrical signals transmitted from at least two communication devices (e.g., access switches).

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

[0054] At the same time, the core layer network equipment also needs to be configured in a similar way to cooperate with the aggregation layer network equipment. Optical modules used for photoelectric conversion and wavelength division multiplexing / demultiplexing equipment may be installed on the core network equipment. However, if both types of equipment are installed on the core layer network equipment simultaneously, the number of devices will be large, and the complexity of deployment, operation, and maintenance will increase. At the same time, a large number of optical fibers will need to be placed between the optical modules inserted into the core layer network equipment and the wavelength division multiplexing / demultiplexing equipment, which will increase the complexity of deployment.

[0055] In one possible implementation, the signal conversion module is installed on the core layer network equipment side. ru.Compared to separately deploying optical modules and wavelength division multiplexing / demultiplexing equipment on the core layer network equipment side, integrating the communication unit, conversion unit, and processing unit into a single signal conversion module reduces the number of devices deployed on the core layer network equipment side, and also reduces the deployment of optical fibers between the optical modules and wavelength division multiplexing / demultiplexing equipment on the core layer network equipment side, simplifying operation and maintenance management. At the same time, since the signal conversion module is a single passive network device, it does not need to be deployed in a dedicated low-voltage machine room. Therefore, the signal conversion module according to this application can reduce the operation and maintenance costs and difficulties of low-voltage machine rooms, and has strong applicability. Furthermore, since the signal conversion module can be deployed in an indoor machine room, it is not affected by external temperature, humidity, or weather such as lightning, reducing the impact of the natural environment, 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-pass first electrical signals transmitted from a communication device (e.g., a core switch).

[0057] In one possible implementation, at least two-pass first electrical signals and at least two-pass first optical signals correspond one-to-one. Exemplarily, as shown in Figure 2, the conversion unit 102 receives three-pass first electrical signals from the communication unit 101: first electrical signal 1, first electrical signal 2, and first electrical signal 3. The conversion unit 102 then converts first electrical signal 1 to first optical signal 1, first electrical signal 2 to first optical signal 2, and first electrical signal 3 to first optical signal 3, where first optical signal 1, first optical signal 2, and 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 center wavelength spacing corresponding to at least two passes of the first optical signal is 20 nanometers, although the above wavelength spacing may be in other ranges and 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 spacing corresponding to at least two passes of the first optical signal is 0.2 nanometers to 1.2 nanometers, specifically 0.8 nanometers, although the above wavelength spacing may be in other ranges and is not limited thereto.

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

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

[0062] Of course, this application is not limited to wavelength ranges, and may further utilize wavelength ranges of multi-wavelength division multiplexing (MWDM) or other types of wavelength division multiplexing techniques.

[0063] In one possible implementation, the communication unit 101 is further used to receive a second mixed optical signal, the processing unit 103 is further used to demultiplex the second mixed optical signal into at least two-pass second optical signals corresponding to different wavelengths, the conversion unit 102 is further used to convert at least two-pass second optical signals into at least two-pass second electrical signals, and the communication unit 101 is further used to transmit at least two-pass second electrical signals.

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

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

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

[0067] One possible implementation involves simultaneously transmitting a first mixed optical signal and a second mixed optical signal over a single optical fiber, that is, simultaneously receiving and transmitting optical signals over a single optical fiber.

[0068] In the above solution, the signal conversion module may be implemented by a signal conversion module or a part of a signal conversion module, and it is not necessary to deploy the signal conversion module in a dedicated low-voltage machine room (some organizations 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, deployment is not possible and the applicability is poor). Therefore, the signal conversion module according to this application can reduce the operating and maintenance costs and difficulties of a low-voltage machine room, has high applicability, and because the signal conversion module can be deployed in an indoor machine room, the signal conversion module is not affected by external temperature, humidity or weather such as lightning, 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 embodiment of this application converts multipath electrical signals into single-path mixed optical signals using an internal conversion unit. Compared to a method in which the optical module on the core layer network equipment side and the wavelength division multiplexing / demultiplexing equipment are deployed separately, this significantly reduces the number of connections and networking complexity between the optical module on the core layer network equipment side and the wavelength division multiplexing / demultiplexing equipment. This simplifies the layout of optical fiber connections, reduces the networking space occupied, further reduces installation costs, improves maintainability, and enhances the reliability of product quality.

[0069] In one possible implementation, at least two-pass second electrical signals and at least two-pass second optical signals correspond one-to-one. Exemplarily, as shown in Figure 3, the conversion unit 102 receives the three-pass second optical signals, second optical signal 4, second optical signal 5, and second optical signal 6, from the processing unit 103. The conversion unit 102 then converts the second optical signal 4 into the second electrical signal 4, the conversion unit 102 converts the second optical signal 5 into the second electrical signal 5, and the conversion unit 102 converts the second optical signal 6 into the second electrical signal 6, where the second optical signals 4, 5, and 6 have different wavelengths.

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

[0071] In one possible implementation, based on the wavelength range of the CWDM technology, the communication unit 101 receives a second mixed optical signal, and the processing unit 103 demultiplexes the second mixed optical signal into eight passes of the second optical signal, where the wavelength of the first pass of the second optical signal is 1431 nanometers, the wavelength of the second pass of the second optical signal is 1451 nanometers, the wavelength of the third pass of the second optical signal is 1471 nanometers, the wavelength of the fourth pass of the second optical signal is 1491 nanometers, the wavelength of the fifth pass of the second optical signal is 1511 nanometers, the wavelength of the sixth pass of the second optical signal is 1531 nanometers, the wavelength of the seventh pass of the second optical signal is 1551 nanometers, and the wavelength of the eighth pass of the second optical signal 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 nine passes of the second optical signal, and the present application does not limit the number of passes after the second mixed optical signal has been 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 80 passes of the second optical signal, and this application does not limit the number of passes after the second mixed optical signal has been demultiplexed.

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

[0075] In one possible implementation, as shown in Figure 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, wherein the first sub-processing unit 1031 is used to multiplex the first sub-optical signal and the second sub-optical signal in at least two passes 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 signal and the fourth sub-optical signal in at least two passes 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 may be other assemblies including a MUX module, such as a device using coarse wavelength division multiplexing technology or a device using high density wavelength division multiplexing technology. In this solution, the processing unit is divided into multiple sub-processing units, and each sub-processing unit completes the multiplexing of a portion of the optical signals, thereby reducing the complexity of the manufacturing process.

[0076] In one possible implementation, as shown in Figure 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, wherein 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 a 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 a second optical signal. Here, the type of the fourth sub-processing unit is a demultiplexer (abbreviated as DEMUX), and may be other assemblies including a DEMUX module, such as a device using coarse wavelength division multiplexing technology or a device using high density wavelength division multiplexing technology.

[0077] In one possible implementation, the structure of the processing unit 103 will be described using the example of a communication unit 101 being able to receive the first electrical signal of the eight-pass system.

[0078] In one possible implementation, the schematic structure 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 Figure 6.

[0079] Here, the communication unit 101 is used to receive the first eight-pass electrical signal. The conversion unit 102 is used to convert the first eight-pass electrical signal into the first eight-pass optical signal, which are the first optical signal of the first pass with wavelength λ1, the first optical signal of the second pass with wavelength λ2, the first optical signal of the third pass with wavelength λ3, the first optical signal of the fourth pass with wavelength λ4, the first optical signal of the fifth pass with wavelength λ5, the first optical signal of the sixth pass with wavelength λ6, the first optical signal of the seventh pass with wavelength λ7, and the first optical signal of the eighth pass with wavelength λ8. The 8:1 multiplexer 201 in the processing unit 103 is used to multiplex the first eight-pass optical signal into a first mixed optical signal. The 3-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 to transmit the first mixed optical signal to the communication unit 101. Here, the 203 unit may use a 3-port CWDM device as well as MUX2:1 / DEMUX1:2, or of course, other devices, such as 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 the second mixed optical signal. The 3-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 transmit the second mixed optical signal to the 1:8 demultiplexer 202 in the processing unit 103 is further used to demultiplex the second mixed optical signal into eight passes of the second optical signal, each of which is the first pass of the second optical signal with wavelength λ9, and the wavelength is λ 10 The second light signal in the second pass has a wavelength of λ. 11 The second optical signal in the third pass has a wavelength of λ. 12 The second optical signal in the fourth pass has a wavelength of λ. 13 The second optical signal in the fifth pass has a wavelength of λ. 14 The second optical signal in the sixth pass has a wavelength of λ. 15 The second optical signal in the seventh pass has a wavelength of λ. 16This is the second optical signal of the eighth pass. The conversion unit 102 is further used to convert the second optical signal of the eighth pass into the second electrical signal of the eighth pass.

[0081] In another possible implementation, the schematic structure of the processing unit 103, as shown in Figure 7, includes two 4:1 multiplexers, which are a first 4:1 multiplexer 301 and a second 4:1 multiplexer 302, two 1:4 demultiplexers, which are a first 1:4 demultiplexer 303 and a second 1:4 demultiplexer 304, and a 5-port CWDM device 305. 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 use a 5-port device CWDM as well as a MUX4:1 / DEMUX1:4, and of course, it may be other equipment, for example, a single device that transmits and receives optical signals, and this application is not limited thereto.

[0082] In one possible implementation method, the communication unit 101 is used to receive an eight-path first electrical signal. The conversion unit 102 is used to convert the eight-path first electrical signal into an eight-path first optical signal, and the wavelengths of the eight-path first optical signal 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. 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. The third mixed optical signal and the fourth mixed optical signal are transmitted to a 5-port CWDM device 305, and the 5-port CWDM device 305 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 communication unit 101.

[0083] In one possible implementation method, the communication unit 101 is further used to receive a 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. The first 1:4 demultiplexer 303 in the processing unit 103 is further used to demultiplex the sixth mixed optical signal into second optical signals corresponding to λ9, λ 10 , λ 11 and λ 12 respectively. The second 1:4 demultiplexer 304 in the processing unit 103 is further used to demultiplex the seventh mixed optical signal into second optical signals corresponding to λ 13 , λ 14 , λ 15 and λ 16 respectively. The conversion unit 102 is further used to convert the eight-path second optical signal into an eight-path second electrical signal.

[0084] In another possible implementation, the schematic diagram of the processing unit 103, as shown in Figure 8, includes two 4:1 multiplexers, which are the first 4:1 multiplexer 401 and the second 4:1 multiplexer 402, two 1:4 demultiplexers, which are the first 1:4 demultiplexer 403 and the second 1:4 demultiplexer 404, a 2:1 multiplexer 405, a 1:2 demultiplexer 406, and a 3-port CWDM device 407. 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 use a MUX2:1 / DEMUX1:2 in addition to a 3-port CWDM device, or of course, it may be other equipment, such as a single device that transmits and receives optical signals, and this application is not limited thereto.

[0085] In one possible implementation, communication unit 101 is used to receive the first eight-pass electrical signal. Conversion unit 102 is used to convert the first eight-pass electrical signal into the first eight-pass optical signal, the wavelengths of the first eight-pass optical signal being λ1, λ2, λ3, λ4, λ5, λ6, λ7, and λ8, respectively. In the processing unit 103, the first 4:1 multiplexer 401 is used to multiplex the first optical signals corresponding to λ1, λ2, λ3, and λ4 into a third mixed optical signal, and 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 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 3-port CWDM device 407, which then transmits the first mixed optical signal to the communication unit 101.

[0086] In one possible implementation, the communication unit 101 is further used to receive a second mixed optical signal and transmit it to a 3-port CWDM device 407. The 3-port CWDM device 407 is used to receive the second mixed optical signal and transmit it 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 is used to demultiplex the sixth mixed optical signal into λ9, λ 10 , λ 11 and λ 12 It is used to demultiplex each of the two corresponding second optical signals. The second 1:4 demultiplexer 404 demultiplexes the seventh mixed optical signal λ 13 , λ 14 , λ 15 and λ 16 It is used to demultiplex each of these into a second optical signal corresponding to them. The conversion unit 102 is further used to convert the eight-pass second optical signal into an eight-pass second electrical signal.

[0087] In one possible implementation, the communication unit 101 is further used to receive a second mixed optical signal, specifically a fifth mixed optical signal containing the second mixed optical signal and the interfering optical signal, and the processing unit 103 includes a filter for filtering the interfering optical signal. This solution effectively removes the interfering optical signal and obtains an accurate second mixed optical signal.

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

[0089] In one possible implementation, the processing unit 103 includes a single filter that allows the second mixed optical signal to pass through and reflects the interfering 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 allows optical signals within the range of the second mixed optical signal to pass through and filters out optical signals outside the range of the second mixed optical signal. Specifically, the second mixed optical signal includes optical signals of nine different wavelengths, and the single filter can allow optical signals of these nine different wavelengths to pass through and filter out optical signals that do not belong to these nine different wavelengths.

[0090] In one possible implementation, the processing unit 103 includes several types of filters, where some of the filters allow one type of second optical signal in the second mixed optical signal to pass through and reflect other optical signals, and other parts of the filters allow several types of second optical signals in the second mixed optical signal to pass through and reflect other optical signals. Specifically, the processing unit 103 includes four types of filters, and the combination of the first and second filters is wavelength λ 10 The third filter can pass the second optical signal in the first pass corresponding to wavelength λ. 10 from λ 12The fourth filter can pass the second optical signal of the first pass, which corresponds to the second wavelength in the second mixed optical signal.

[0091] In one possible implementation, the processing unit 103 includes a plurality of types of filters, where some of the filters allow one type of second optical signal in the second mixed optical signal to pass through and reflect the other optical signals, and other filters allow multiple types of second optical signals in the second mixed optical signal to pass through and reflect the other optical signals. For example, the second optical signal in the first pass has a wavelength of λ9, and the wavelength is λ 10 The second light signal in the second pass has a wavelength of λ. 11 The second optical signal in the third pass has a wavelength of λ. 12 The second optical signal in the fourth pass has a wavelength of λ. 13 The second optical signal in the fifth pass has a wavelength of λ. 14 There is a second optical signal in the sixth pass. The processing unit 103 includes four types of filters: the first filter can pass the second optical signal in the first pass corresponding to wavelength λ9, and the second filter can pass wavelength λ 10 The second pass of the second optical signal corresponding to the wavelength λ can be allowed to pass through, and the third filter can pass through the wavelength λ 11 The second optical signal and wavelength λ of the third pass corresponding to this. 12 The fourth filter allows the corresponding second optical signal to pass through in a fourth pass, and the fourth filter allows the remaining wavelength λ in the second mixed optical signal to pass through. 13 and λ 14 This allows the second optical signal of the fifth pass and the second optical signal of the sixth pass to pass through.

[0092] In one possible implementation, the processing unit 103 includes multiple types of filters, each type of filter allowing one type of second optical signal in the second mixed optical signal to pass through and reflecting other optical signals. Specifically, the processing unit 103 includes multiple types of filters, for example, each pass of optical signal corresponds to one type of filter, which allows an optical signal of the wavelength corresponding to the optical signal in that pass to pass through and reflects optical signals of other wavelengths. Exemplarily, the second optical signal of the first pass has a wavelength of λ9, and the wavelength is λ 10 When a second optical signal of the second pass is present, the processing unit 103 includes two types of filters, a first filter and a second filter, the first filter allows the second optical signal of the first pass, corresponding to wavelength λ9, to pass through and reflects optical signals of other wavelengths, and the second filter, λ 10 It allows a second optical signal corresponding to the wavelength to pass through, while reflecting optical signals of other wavelengths.

[0093] In one possible implementation, the processing unit 103 includes multiple types of filters, each type of filter allowing multiple types of second optical signals in the second mixed optical signal to pass through and reflecting other optical signals. For example, the first pass of the second optical signal has a wavelength of λ9, and the wavelength is λ 10 The second light signal in the second pass has a wavelength of λ. 11 The second optical signal in the third pass has a wavelength of λ. 12 There exists a second optical signal in the fourth pass. Then the processing unit 103 includes two types of filters, a first filter and a second filter, and the first filter is used to process the second optical signal in the first pass corresponding to the λ9 wavelength and λ 10 The second filter allows the second optical signal, corresponding to the wavelength, to pass through and reflects optical signals of other wavelengths, and the second filter is λ 11 The second optical signal of the third pass, corresponding to the wavelength, and λ 12 The second optical signal, a fourth pass corresponding to the wavelength, is allowed to pass through, while optical signals of other wavelengths are reflected.

[0094] In one possible implementation, the filter allows optical signals in a first wavelength range to pass through and reflects optical signals of other wavelengths. For example, the filter is λ nBy passing an optical signal corresponding to the wavelength through it, the first wavelength range is [λ n -M,λ n [M + N], where n is a positive integer and M and N are greater than 0. Exemplarily, M and N are 6.5 nanometers, but of course, M and N may be other values, and this application does not limit the specific values ​​of M and N.

[0095] In one possible implementation, as shown in Figure 9, the filter allows optical signals in a first wavelength range to pass through and reflects optical signals of other wavelengths, which means that the transmittance of the filter for optical signals in the first wavelength range is greater than a first filtering threshold, and the transmittance of optical signals of other wavelengths is less than a second filtering threshold. Specifically, the first filtering threshold may be 100% or 90%, or of course any other value, and this application is not limited thereto. The second filtering threshold may be 0% or 10%, or of course any other value, and this application is not limited thereto.

[0096] In one possible implementation, as shown in Figure 10, the processing unit 103 has a common end 501, a reflective end 502, a transmissive end 503, and λ n The system includes a filter. Here, the common end 501 is used to receive the second mixed optical signal and the interfering optical signal, and the reflecting end 502 receives the interfering optical signal and the λ in the second mixed optical signal. n It is used to receive the mixed optical signal after the optical signal corresponding to the wavelength has been removed, that is, the λ in the interfering optical signal and the second mixed optical signal. n The mixed optical signal, after the optical signal corresponding to the wavelength has been removed, does not pass through the filter but is filtered at the reflective end 502, and the transmitted end 503 is filtered at the λ in the second mixed optical signal. n It is used to receive optical signals corresponding to wavelengths. For example, λ n λ represents the wavelength of any one of the second optical signals in the second mixed optical signal. i λ represents the wavelength of the filtered optical signal, and then the common end is λ n and λ i Receive the corresponding optical signal, λn The filter is λ n The optical signal is passed through the first wavelength range corresponding to the wavelength, λ n The filter filters the optical signal λ i It reflects the light signal λ that is filtered here. i This is the λ in the interfering optical signal and the second mixed optical signal. n This 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 this application is an integrated color light optical module.

[0098] As shown in Figure 11, this is a schematic diagram of the architecture of optical fiber transmission using a core switch in the related technology. In the related technology, 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 equipment such as the 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 a single independent mounting tool frame, and further core It is inserted into the switch housing, which serves to secure 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 data to be transmitted, and this electrical signal excites a color laser 1121 in an optical module (e.g., a 16-channel color light module 112) to generate optical signals in multiple wavelength bands. The optical modules connected to the core switch include multiple 16-channel color light modules 112, with each 16-channel color light module 112 generating an optical signal corresponding to one wavelength band. Therefore, multiple 16-channel color light modules 112 can generate optical signals corresponding to multiple wavelength bands.Optical signals of multiple wavelength bands are combined by a passive multiplexing device 113 to form a single-pass 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 emitter of the passive multiplexing device 113, forming optical signals of multiple wavelength bands. These optical signals of multiple wavelength bands are then converted from optical signals to 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 as a hot-plug 16-channel CWDM color light module and fixed on the core switch in a plug-and-play configuration. The wavelength division multiplexing box uses a WDM passive wavelength division box, and the passive wavelength division box is fixed to an ODF (Optical Distribution Frame) optical fiber flake.

[0100] Each CWDM color light module 112 includes a color laser 1121 and a PD detector 1122. A WDM passive wavelength division box 113 is connected to each CWDM color light module 112 via two interfaces: one interface is connected to the color laser 1121 and used to receive the optical signal emitted by the color laser 1121, and the other interface is connected to the PD detector 1122 and used to transmit the demultiplexed optical signal to the PD detector 1122. After receiving the optical signals emitted by multiple color lasers 1121, the WDM passive wavelength division box 113 multiplexes the multiple optical signals into a single-pass 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 each of the multiple CWDM color light modules 112. The WDM passive wavelength division box 113 is connected to the color laser 1121 of the CWDM color light module 112 via a first optical fiber and to the PD detector 1122 via a second optical fiber. The WDM passive wavelength division box 113 belongs to the passive module and does not emit laser light itself. Generally, it uses PLC (Planar Lightwave Circuit) technology to split a single light into multiple lights or to combine multiple lights into a single light.

[0101] CWDM Color Light Module 1 1 The 2 can generate optical signals in 16 wavelength bands, and the core switch 111 and the CWDM color light module 112 use a 16-wave hot-plug method, with the CWDM color light module 112 and the WDM passive wavelength division box 113 connected via optical fiber. In Figure 11, a configuration is used that combines the CWDM color light module 112, the WDM passive wavelength division box 113, and the switch housing, resulting in a low optical port density on the switchboard card and integrating the wavelength division function into the switchboard card. not present. Note, switch and Hot-plugging Connected by this method When the CWDM color light module 112 is connected to the WDM passive wavelength division box 113, a large number of optical fiber jumpers are required, resulting in high complexity due to the large number of optical fiber connections, a large amount of work required for installation and maintenance, and low maintainability.

[0102] Referring to Figure 12, an integrated color light optical module according to an embodiment of the present application is shown. The integrated color light optical module includes a emitter module 121 in which a color laser unit 1211 and an internal multiplexer unit 1212 are packaged, the color laser unit 1211 emits at least two passes of first electrical signals by a core switch, for example, the first pass electricity The signal and the first of the second pass electricity The internal multiplexer unit 1212 is used to receive signals and convert the received first electrical signals (at least two passes) into first optical signals (at least two passes), and to multiplex the first optical signals (at least two passes) generated by the color laser unit 1211 into a first mixed optical signal. Here, there is a one-to-one correspondence between the first electrical signals and the first optical signals, that is, the number of first optical signals is equal to the number of 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, in which the color laser unit 1211 and the internal multiplexer unit 1212 are packaged.

[0104] In one possible implementation, a color laser unit 1211 receives an N-pass first electrical signal emitted by a core switch and generates an N-pass first optical signal, the N-pass first optical signal having N different center wavelengths, where N is an integer greater than or equal to 2. An internal multiplexer unit 1212 is used to combine the N-pass optical signals into a single-pass 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. If the internal multiplexer unit 1212 includes a single-stage internal multiplexer, the single-stage internal multiplexer multiplexes at least two passes of a first optical signal into a first mixed optical signal. If the internal multiplexer unit 1212 includes a multi-stage internal multiplexer, the multi-stage internal multiplexer multiplexes at least two passes of the first optical signal at least twice to obtain a first mixed optical signal. A multistage internal multiplexer includes a first-stage internal multiplexer and a second-stage internal multiplexer, where the first-stage internal multiplexer multiplexes a received first optical signal of at least two passes into a multi-pass mixed optical signal, there are multiple first-stage internal multiplexers, each first-stage internal multiplexer multiplexes a received first optical signal of at least two passes into a single-pass mixed optical signal, and there may be one or more second-stage internal multiplexers, and the internal multiplexer units are two In a multi-stage structure, there is one second-stage internal multiplexer, which is used to convert the received mixed optical signal into a first mixed optical signal. If the internal multiplexer unit is larger than a two-stage structure, there are multiple second-stage internal multiplexers, each of which multiplexes at least two-pass mixed optical signals into a single-pass mixed optical signal and transmits it to the next stage multiplexer, continuing until the last second-stage internal multiplexer multiplexes the mixed optical signal into a first mixed optical signal.

[0106] In one possible implementation, the color laser unit 1211 includes multiple color lasers, each used to generate an optical signal in one wavelength band, i.e., an optical signal with one central wavelength. The wavelengths of the optical signals generated by these multiple color lasers are different. Taking the case where the color laser unit 1211 receives a first electrical signal of N passes, the number of color lasers is N, and they are used to generate the first optical signal of N passes. The color lasers may be, but are not limited to, coarse wavelength division multiplexing (CWDM) lasers or high density wavelength division multiplexing (DWDM) lasers. When using different types of color lasers, the spacing between two corresponding adjacent wavelength bands will differ; taking a CWDM laser as an example, 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 emitting the optical signal are continuous wavelength bands with an interval of xn, and the N wavelength bands receiving the optical signal are continuous wavelength bands with an interval of xn, where x is a positive integer. When x is 1, the interval between each pair of adjacent wavelength bands among the N wavelength bands is n, and taking a CWDM laser as an example, the interval between two adjacent wavelength bands is 20 nm, and when x is 2, the N wavelength bands are continuous wavelength bands with an interval of 40 nm. 。

[0107] In one possible implementation, the center wavelengths between adjacent first optical signals in an N-pass optical signal are the same wavelength. Based on the wavelength range of CWDM technology, and taking N as an example where N is 8, the wavelengths of the first optical signals in the N-pass optical signals are as follows: the wavelength of the first optical signal in the first pass is 1271 nanometers, the wavelength of the first optical signal in the second pass is 1291 nanometers, the wavelength of the first optical signal in the third pass is 1311 nanometers, the wavelength of the first optical signal in the fourth pass is 1331 nanometers, the wavelength of the first optical signal in the fifth pass is 1351 nanometers, the wavelength of the first optical signal in the sixth pass is 1371 nanometers, the wavelength of the first optical signal in the seventh pass is 1391 nanometers, and the wavelength of the first optical signal in the eighth pass is 1411 nanometers. By placing the first optical signals at adjacent wavelengths and concentrating the wavelength band in the first mixed optical signal within a specific wavelength range, the receiving end equipment can more easily demultiplex the mixed optical signal.

[0108] In one possible implementation, the internal multiplexer unit 1212 is used to perform multiplexing for at least two-pass first optical signals and to multiplex at least two-pass 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, thus reducing the number of individual optical modules used, increasing optical port density, and reducing the number of optical fiber connections from the core-side color light module to the passive wavelength division device.

[0109] The color light module shown in Figure 12 includes a receiving module 122, which packages 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-pass second optical signals, and the PD detector 1222 is used to convert the at least two-pass second optical signals into at least two-pass second electrical signals and transmit the at least two-pass second electrical signals to the core switch. Here, there is a one-to-one correspondence between the second electrical signal and the second optical signal, that is, the number of second optical signals is two The number of electrical signals is equal to the number of different second optical signals, and each different optical signal corresponds to a different wavelength.

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

[0111] In one possible implementation, an internal demultiplexer unit 1221 demultiplexes the received second mixed optical signal into an N-pass second optical signal, the N-pass second optical signal having N different center wavelengths, where N is an integer greater than or equal to 2. A PD detector 1222 is used to convert the N-pass second optical signal into a second electrical signal and transmit it to a core switch.

[0112] In one possible implementation, the internal demultiplexer unit 1221 includes a single-stage internal demultiplexer or a multi-stage internal demultiplexer. If the internal demultiplexer unit 1221 includes a single-stage internal demultiplexer, the single-stage internal demultiplexer converts the second mixed optical signal into at least two-pass second optical signals. reverseMultiplexing is performed. If the internal demultiplexer unit 1221 includes a multi-stage internal demultiplexer, the multi-stage internal demultiplexer performs demultiplexing at least twice on the second mixed optical signal to obtain a second optical signal with at least two passes. 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-pass mixed optical signal, and there is one first-stage internal demultiplexer. There are multiple second-stage internal demultiplexers, and each second-stage internal demultiplexer demultiplexes the received mixed optical signal into a multi-pass mixed optical signal or a multi-pass second optical signal. If 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 second multipath optical signal. If the internal demultiplexer unit is larger than a two-stage structure, each second-stage internal demultiplexer demultiplexes the received mixed optical signal into a multipath mixed optical signal and transmits it to the next stage internal demultiplexer, continuing until the final stage internal demultiplexer demultiplexes the mixed optical signal into a second optical signal.

[0113] In one possible implementation, the center wavelengths between adjacent second optical signals in N passes are the same. Based on the wavelength range of CWDM technology, and taking N as an example where N is 8, the wavelengths of the second optical signals in N passes are as follows: the wavelength of the second optical signal in the first pass is 1431 nanometers, the wavelength of the second optical signal in the second pass is 1451 nanometers, the wavelength of the second optical signal in the third pass is 1471 nanometers, the wavelength of the second optical signal in the fourth pass is 1491 nanometers, the wavelength of the second optical signal in the fifth pass is 1511 nanometers, the wavelength of the second optical signal in the sixth pass is 1531 nanometers, the wavelength of the second optical signal in the seventh pass is 1551 nanometers, and the wavelength of the second optical signal in the eighth pass is 1571 nanometers. By positioning 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 signal and the first optical signal of the N-pass are different, and transmission is performed using the same optical fiber.

[0115] The color light module shown in Figure 12 further includes an external multiplexer / demultiplexer 123, which is connected to the transmit module 121 and the receive module 122, respectively, and is also externally mounted outside the transmit module 121 and the receive module 122. The external multiplexer / demultiplexer 123 is used to transmit a first mixed light signal multiplexed by the transmit module 121 and to transmit a second mixed light signal received by the receive module 122.

[0116] In one possible implementation, the external multiplexer / demultiplexer 123 is connected to the transmit box BOX and the receive box BOX, respectively, and is externally mounted outside the transmit box BOX and the receive box BOX. It is used to transmit the composite transmit optical signal via the same single optical fiber and to receive the composite receive optical signal transmitted by the access switch. The external multiplexer receives the composite transmit optical signal transmitted by the internal multiplexer unit 1212, multiplexes the composite transmit optical signal onto the single optical fiber and transmits it to the access switch. It also receives the composite receive optical signal transmitted by the access switch via the single optical fiber, decomposes the composite receive optical signal using the external demultiplexer, and transmits the decomposed composite receive optical signal to the internal demultiplexer unit 1212. 221 It will be transmitted to [the specified location].

[0117] In one possible implementation, the external multiplexer / demultiplexer 123 is used for transmitting a mixed signal, 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 not only to realize mixed signal transmission but also to realize optical signal multiplexing and demultiplexing, that is, the external multiplexer / demultiplexer 123 has a function similar to that of the internal multiplexer unit 1212 and the internal demultiplexer unit 1221, and realizes optical signal multiplexing and demultiplexing. In scenarios where multi-stage multiplexing or multi-stage demultiplexing is required, the external multiplexer / demultiplexer 123 is used in last Stage multiplexer and / or First row It may also be a demultiplexer. Alternatively, if the color light module includes multiple emitter modules 121 and multiple receiver modules 122, the external multiplexer / demultiplexer 123 may be multiple firing After receiving multiple composite emitted optical signals corresponding to module 121 and further combining them multipleIt can be used to send to the access switch, and at the same time, the external multiplexer / demultiplexer 123 can also multiple It can be used to receive a composite received optical signal transmitted by an access switch, demultiplex it, and then transmit it to an internal demultiplexer unit 1221 corresponding to multiple receiving modules 122.

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

[0120] Specifically, the first stage Mux is located inside the launch box, and the 8:1 multiplexer inside the launch box is connected to the color laser. The first stage DeMux is located inside the receiver box, and the 1:8 demultiplexer inside the receiver box is connected to the PD detector.

[0121] The above integrated color light module is obtained in a package. The integrated color light module contains 8-pass transmission, 8-pass reception and WDM technology but accumulation It isThe above integrated color light optical module is obtained, and the color laser is a color light LD (Laser Diode) laser. The emission box in the device packages an 8-pass color light LD laser. Taking CWDM as an example, the 8-pass color light LD laser includes channels for the first 8 wavelength bands, with a channel spacing of 20 nm, and the wavelength bands of each channel are 1271 nm, 1291 nm, 1311 nm, 1331 nm, 1351 nm, 1371 nm, 1391 nm, and 1411 nm. The receiving box package includes an 8-pass PD detector, which includes channels for the last 8 wavelength bands, with a channel spacing of 20 nm, and the wavelength bands of each channel are 1431 nm, 1451 nm, 1471 nm, 1491 nm, 1511 nm, 1531 nm, 1551 nm, and 1571 nm. The first eight wavelength bands may be optionally used as receiving channels, and the last eight wavelength bands as transmitting channels.

[0122] The second stage Mux / DeMux refers to the BIDI (Bidirectional) optical module technology principle, where one two-stage Mux / DeMux is externally mounted, and an internal 8:1 multiplexer is connected to the two-stage Mux / DeMux via optical fiber, enabling 8-pass transmit and 8-pass receive transmission over a single optical fiber. The above second stage Mux / DeMux is externally mounted outside the transmit and receive box packages, but is integrated into the overall box housing package and includes a 2:1 multiplexer Mux and a 1:2 demultiplexer DeMux. The above composite transmit optical signal is transmitted to the other end via a single optical fiber. device After being transmitted, it interacts with multiple access switches.

[0123] If the internal multiplexer unit 1212 includes a multi-stage internal multiplexer, the number of internal multiplexers in the first stage is multiple, and the number of internal multiplexers in the final stage is one. Each internal multiplexer in each stage performs a corresponding number of multiplexing operations on the input emitted optical signal, transmits the multiplexed emitted optical signal to the next internal multiplexer, and continues until emitted optical signals of N wavelength bands are combined into a single-pass composite emitted optical signal.

[0124] Taking N as an example, 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 includes 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, multi-stage internal multiplexers and multi-stage internal demultiplexers may also be in other multi-stage configurations, for example, four internal 2:1 multiplexers in the first stage and one 4:1 multiplexer in the second stage of a multi-stage internal multiplexer, and the multi-stage configuration is not limited to two stages, but may be three stages, etc., and the same multi-stage configuration may be used for the multi-stage internal demultiplexer, and no further explanation is given here.

[0126] The above-mentioned integrated color light module according to an embodiment of this application In The transmitting and receiving modules integrate passive wavelength division functions, and within the optical module, transmission via a single optical fiber is achieved by multiplexing of optical signals. This integrated optical module simplifies the layout of optical fiber connections and board cards. Optical port When increasing density and connecting to external networks, using single optical fiber transmission reduces network space, significantly decreases the number of external optical fiber connections and network complexity, further reduces installation costs, improves maintainability, and enhances product quality reliability.

[0127] Referring to Figure 13, this is a schematic diagram of the connection between the integrated color light optical module and the core switch according to an embodiment of this application. As shown in Figure 13, the color light optical module is packaged in a single overall package box 124, which contains a emitter module 121, a receiver module 122, and an external multiplexer / demultiplexer 123. The color light optical module and the core switch are connected in the form of a hot plug.

[0128] In one possible implementation, the launch module 121 and the receiver module 122 are packaged using independent packaging technologies, and the external multiplexer / demultiplexer 123 is attached externally to the independently packaged launch module 121 and receiver module 122, but is built into the color light module. The launch module 121 and receiver module 122 conform to the BOX packaging technology standard and use standard sizes. By packaging using standard packaging technology and the corresponding standard sizes, the packaging process can be simplified and packaging costs can be saved.

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

[0130] The standard BOX package technology may be, but is not limited to, 400G QSFP-DD LR8 device technology, and using this package technology, coreThis device integrates 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 multiplexing unit (internal multiplexer unit / internal demultiplexer unit) into a single package. By connecting to the core switch using a pluggable design, it eliminates the need for a fixed optical fiber frame and an external wavelength division multiplexing box attached to the core switch, reducing networking space, significantly decreasing the number of external optical fiber connections and networking complexity, further reducing installation costs, improving maintainability, and enhancing product quality reliability.

[0131] Large package standards include chip-scale packages (C). S (Abbreviated as P), C S While it may include P2 and other related technologies, the accompanying package industry chain is mature, with established MultiSource Agreement (MSA) standard protocols, making large-scale adoption easy.

[0132] When the launch module 121 and the receiver module 122 are packaged, metal structural members are used, optical fibers are built in for connection, and a fiber winding frame and an LC interface may also be built in. Specifically, an assembled printed circuit board (PCBA) is used.

[0133] In one possible implementation, a gold finger 125 and an optical fiber port are located on the outside of the overall package box 124 of the color light optical module package, and the overall package box 124 is connected to a core switch via the gold finger 125. The optical fiber port is used to connect to optical fibers that transmit and receive mixed optical signals, and the optical fibers can be inserted into the optical fiber port to prevent loosening of the optical fiber connection. The gold finger 125 may consist of a plurality of conductive contacts, the surface of which is gold-plated, and the arrangement of the plurality of conductive contacts is finger-shaped. The color laser unit in the emission module 121 is connected to the core switch via the gold finger 125 and is used to receive a first electrical signal of at least two passes emitted by the core switch, and the PD detector 1222 in the receiving module 122 is connected to the core switch via the gold finger 125 and is used to transmit a second electrical signal of at least two passes to the core switch.

[0134] In one possible implementation, the data transmission rates supported by the launch 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 using different data transmission rates, different packaging technologies can be used to package the launch module 121 and the receiver module 122, respectively.

[0135] One possible implementation is that the launch box and receiver box packages conform to the N:1 box package technology standard and use standard sizes. That is, if the packaging technology can meet the requirements, the launch box and receiver box packages are implemented using standard box package technology and the corresponding standard sizes directly. For example, if N is 8 and the data transmission rate supported by the color laser unit is 10 Gbit / s, the launch box and receiver box packages are implemented using standard box package technology and the corresponding standard sizes. 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 and receiver box packages are implemented using standard box package technology and the corresponding standard sizes. For example, if N is 8 and the data transmission rate supported by the color laser unit is 25 Gbit / s, the launch box and receiver box packages are implemented using standard box package technology and the corresponding standard sizes.

[0136] In one possible implementation, the packages for the launch box and receiver box conform to the N:1 box package technology standard and use customized sizes. For the color laser unit and internal multiplexer, if the internal demultiplexer and PD detector are large and standard-sized package technology cannot meet the package requirements, packaging can be carried out using a process corresponding to the box package technology standard, but the size can be customized as needed. For example, non-standard sizes such as housing metal components and optical port connectors can be customized according to demand to meet the needs of different scenarios. Exemplarily, if N is 8 and the data transmission rates supported by the color laser unit are 1 Gbit / s, 10 Gbit / s, 25 Gbit / s, and 50 Gbit / s, the launch box and receiver box packages can be implemented using standard box package technology and customized sizes. For example, if N is a number other than 8, and the data transmission rates supported by the color laser unit are 1 Gbit / s, 10 Gbit / s, 25 Gbit / s, and 50 Gbit / s, the launch box and receiver box packages can be realized using standard box packaging technology and customized sizes.

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

[0138] In one possible implementation, the signal conversion module of this application is applied to a housing complex network, where a housing complex network refers to a network within a single housing complex (a housing complex generally includes multiple buildings), and for example, networks of institutions such as hospitals, schools, government agencies, and corporations may all be called housing complex networks. Of course, the signal conversion module of this application may also be applied to other network systems, and this application is not limited thereto.

[0139] In one possible implementation method, as shown in Figure 15, the housing complex network Ku isA three-tiered design is used, including a core layer, an aggregation layer, and an access layer. Here, the core layer is the high-speed switching backbone of the network and plays a crucial role in the communication of the entire network. The aggregation layer is an "intermediary" between the network access layer and the core layer; that is, it performs aggregation before workstations can access the core layer, thereby reducing the load on the core layer equipment. The access layer provides workstation access to the local network segment. In a three-tiered network architecture, core layer switches are usually deployed in the data center machine room of the housing complex, aggregation layer switches are usually deployed in the low-voltage machine room of each building in the complex, and access layer switches are usually deployed in the low-voltage machine room of each building or on each floor of the complex. Here, deploying aggregation layer switches in the low-voltage machine room presents 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, so there is no place to install aggregation equipment and it can only be left in corridors or offices, (2) the environment of the low-voltage machinery room is poor, for example, there is no air conditioning and it is close to toilets or acid-base rooms for special purposes, or the external environment where the low-voltage machinery room is located is poor, for example, the temperature is high, the humidity is high or lightning strikes are frequent.

[0140] In one possible implementation, the signal conversion module according to this application can realize the functionality of the aggregation layer in conjunction with the remote access module in Figure 14. The signal conversion module according to this application is a highly integrated module that can be directly deployed in the data center machine room of the housing complex network, and the signal conversion module according to this application uses a passive method, meaning that it does not need to be powered. The signal conversion module according to this application may also be an integrated color light optical module, which may include units such as a color laser, PD detector, internal multiplexer, internal demultiplexer, and external multiplexer / demultiplexer. Therefore, by deploying the signal conversion module according to this application in the housing complex network, the problems present in the low-voltage machine room can be solved.

[0141] In one possible implementation, the structural diagram of the interconnection of the assembly of the signal conversion module according to this application in a two-layer network is shown in Figure 16. Here, n is 2 or greater, and n represents the maximum number of passes for at least two passes of the first optical signal or at least two passes of the second optical signal. For example, if the first mixed optical signal transmitted from the signal conversion module includes a first optical signal with 9 passes, and the second mixed optical signal received by the signal conversion module includes a second optical signal with 9 passes, then 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 optoelectronic signal conversion module, and an access switch. Access switches can be used as indoor switches.Here, the core switch is used to provide a first electrical signal of at least two passes to a signal conversion module and to receive a first electrical signal of at least two passes transmitted by the signal conversion module. The signal conversion module is used to receive the first electrical signal of at least two passes provided by the core switch, generate a first optical signal of at least two passes based on the first electrical signal of at least two passes, multiplex the first optical signal of at least two passes 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 module into a second optical signal of at least two passes, convert the second optical signal of at least two passes into an electrical signal of at least two passes, and transmit the first electrical signal of at least two passes 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 at least two-pass third optical signals, transmit the at least two-pass third optical signals to the photoelectric signal conversion module, receive the at least two-pass fourth optical signal transmitted by the photoelectric signal conversion module, and multiplex the at least two-pass fourth optical signal into the second mixed optical signal. The photoelectric signal conversion module is used to receive the at least two-pass third optical signal transmitted by the wavelength division multiplexer / demultiplexer, generate at least two-pass third electrical signals based on the received at least two-pass third optical signals, transmit the at least two-pass third electrical signals to an access switch, receive the at least two-pass fourth electrical signals transmitted by the access switch, generate at least two-pass fourth optical signals based on the at least two-pass fourth electrical signals, and transmit the at least two-pass fourth optical signals to the wavelength division multiplexer / demultiplexer. The access switch is used to receive the third electrical signal of at least two passes transmitted by the optical-electrical signal conversion module and to transmit the fourth electrical signal of at least two passes to the optical-electrical signal conversion module. The remote access module is Multiplexer / Demultiplexer Even if Often, an optical-electrical signal conversion module can also be a remote optical module.

[0142] In one possible implementation, using Figure 17 as an example, the interaction process of each assembly from the transmission of a first electrical signal from the core switch to the reception of the first electrical signal by the indoor switch will be described below, and this process will include the following steps.

[0143] Step 101, at least one core switch transmits a first electrical signal in at least one path.

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

[0145] Step 102, the signal conversion module receives the first electrical signal in at least one pass and converts it into the first mixed optical signal.

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

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

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

[0149] Step 106, the wavelength division multiplexer / demultiplexer transmits the first optical signal in at least one pass to at least one optoelectronic signal conversion module.

[0150] In one possible implementation, the optoelectronic signal conversion module refers to an optoelectronic signal conversion module used in the access layer that can perform the corresponding conversion between optical and electrical signals. For example, one optoelectronic signal conversion module can convert the first optical signal of one pass to the corresponding first electrical signal of one pass, and can also convert the second electrical signal of one pass to the second optical signal of one pass.

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

[0152] Step 108, at least one indoor switch receives a first electrical signal of at least one corresponding path.

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

[0154] In one possible implementation, using Figure 18 as an example, the interaction process of each assembly from the transmission of a second electrical signal from at least one switch to the reception of the second electrical signal in at least one path by the core switch will be described below, and this process will include the following steps.

[0155] Step 201, at least one indoor switch transmits a second electrical signal in at least one pass.

[0156] Step 202, at least one optical-electrical signal conversion module converts a second electrical signal in at least one pass into a corresponding second optical signal in at least one pass.

[0157] Step 203, at least one optical-electrical signal conversion module transmits a second optical signal in at least one pass to a wavelength division multiplexer / demultiplexer.

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

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

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

[0161] Step 207, the signal conversion module receives the second mixed optical signal and converts it into a second electrical signal with at least one pass.

[0162] Step 208, the core switch receives a second electrical signal in at least one pass.

[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 described in this application is applicable not only to apartment complex network architectures but also to other switching / routing physical networks.

[0165] In one possible implementation, a signal conversion module according to the present application, the signal conversion module can be connected to a plurality of core switches, and exemplary, the signal conversion module can receive an eight-pass first electrical signal, and the signal conversion module can be connected to eight core switches.

[0166] In one possible implementation, the present invention relates to a signal conversion module, which may be integrated in a core switch, as shown in Figure 19, and to an optoelectronic signal conversion module, which may be integrated in an indoor switch, as shown in Figure 20, for example.

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

[0168] Step 301, receive a first electrical signal with at least two passes.

[0169] Step 302: Convert the first electrical signal with at least two passes into the first optical signal with at least two passes.

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

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

[0172] Step 303: The first optical signal, which has at least two passes, is multiplexed into the first mixed optical signal.

[0173] Step 304: The first mixed optical signal is transmitted.

[0174] The above solution can receive at least two passes of a first electrical signal, process at least two passes of the first electrical signal, and improve the processing efficiency of at least two passes of the first electrical signal.

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

[0176] The above solution may be implemented by a signal conversion module or a part of a signal conversion module, and it is not necessary to deploy the signal conversion module in a dedicated low-voltage machine room (some organizations 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, deployment is not possible and the applicability is poor). Therefore, the signal conversion module according to this application can reduce the operating and maintenance costs and difficulties of a low-voltage machine room and has high applicability. Since the signal conversion module can be deployed in an indoor machine room, the signal conversion module is not affected by external temperature, humidity or weather such as lightning, 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, Figure 22 is a schematic flowchart of a signal conversion method according to an embodiment of the present application, the method comprising the following steps.

[0178] Step 401: Receive the second mixed optical signal.

[0179] In one possible implementation, a fifth mixed optical signal is received, which includes a second mixed optical signal and an interfering optical signal, and the interfering optical signal is filtered.

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

[0181] The above method effectively removes the interfering optical signal and allows for obtaining an accurate second mixed optical signal.

[0182] Step 402, the second mixed optical signal is demultiplexed into at least two passes of the second optical signal.

[0183] Here, at least two second optical signals correspond to different wavelengths.

[0184] In one possible implementation, 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 second mixed optical signal and the seventh mixed optical signal is another portion of the second mixed optical signal; the sixth mixed optical signal is demultiplexed into multiple optical signals in at least two passes of the second optical signal; and the seventh mixed optical signal is demultiplexed into the remaining multiple optical signals in at least two passes of the second optical signal.

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

[0186] Step 403: Convert the second optical signal, which has at least two passes, into a second electrical signal, which has at least two passes.

[0187] Step 404, transmit a second electrical signal of at least two passes.

[0188] In the above solution, the signal conversion module may be implemented by a signal conversion module or a part of a signal conversion module, and it is not necessary to deploy the signal conversion module in a dedicated low-voltage machine room (some organizations 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, deployment is not possible and the applicability is poor). Therefore, the signal conversion module according to this application can reduce the operating and maintenance costs and difficulties of a low-voltage machine room, has high applicability, and because the signal conversion module can be deployed in an indoor machine room, the signal conversion module is not affected by external temperature, humidity or weather such as lightning, 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, embodiments of this application provide a signal converter 1900, which, as shown in Figure 23, includes at least one processor 1901 and a memory 1902 connected to at least one processor. Embodiments of this application do not limit the specific connection medium between the processor 1901 and the memory 1902, and as an example, Figure 19 shows that 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 the embodiments of this application, the memory 1902 stores instructions that can be executed by at least one processor 1901, and the at least one processor 1901 can execute the above signal conversion method by executing the instructions stored in the memory 1902.

[0191] Here, the processor 1901 is the control center of the signal converter 1900, and can configure resources by connecting various parts of the computer equipment using various interfaces and lines, running or executing instructions stored in memory 1902, and retrieving data stored in memory 1902. Optionally, the processor 1901 may include one or more definitive units, and the processor 1901 may integrate an application processor and a modem processor. Here, the application processor is mainly for processing the operating system, user interface, and application programs, and the modem processor is mainly for processing wireless communication. To understand this, the modem processor does not have to be integrated into the processor 1901. In some embodiments, the processor 1901 and memory 1902 may be implemented on the same chip, and in some embodiments, they may be implemented on separate chips.

[0192] The processor 1901 may be a general-purpose processor, such as a central processor (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 can implement or execute each method, step and logic block diagram disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any general-purpose processor. The steps of the methods disclosed in conjunction with the embodiments of this application may be directly embodied as completion by a hardware processor or by a combination of hardware and software modules in the processor.

[0193] Memory 1902 may be used as a non-volatile computer-readable storage medium for storing non-volatile software programs, non-volatile computer-executable programs and modules. Memory 1902 may include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic memory, magnetic disk, optical disk, etc. Memory 1902 is any other computer-accessible medium that can be used to carry or store program code expected in instruction or data structure format. Memory 1902 in the embodiments of this application may further be a circuit or any device capable of realizing a storage function, used for storing program instructions and / or data.

[0194] Embodiments of this application further provide 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 execute the signal conversion method described in any one of the above-mentioned methods.

[0195] As those skilled in the art will see, embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application may take the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware. Furthermore, this application may take the form of a computer program product implemented on one or more computer-compatible storage media (including, but not limited to, magnetic disk memory, CD-ROM, optical memory, etc.) containing computer-compatible program code.

[0196] This application is described with reference to flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products described herein. 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 dedicated computer, an embedded processor, or other programmable data processing device to generate a machine, thereby generating an apparatus for implementing the functions specified in one or more flows in the flowchart and / or one or more blocks in the block diagram.

[0197] These computer program instructions may be stored in computer-readable memory that can operate a computer or other programmable data processing device in a particular manner, thereby generating a product that includes an instruction unit. The instruction unit implements the functions specified in one or more flows in a flowchart and / or one or more blocks in a block diagram.

[0198] These computer program instructions may be installed on a computer or other programmable data processing device, thereby causing a series of operational steps to be performed on the computer or other programmable device to generate processing realized by the computer. The instructions executed on the computer or other programmable device then provide steps to realize a function specified in one or more flows in a flowchart, and / or one or more blocks in a block diagram.

[0199] Clearly, a person skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and the equivalent art, this application is intended to include such modifications and variations.

Claims

1. It is a signal conversion module, A conversion unit for converting a received first electrical signal with at least two passes into a first optical signal with at least two passes corresponding to different wavelengths, The processing unit includes for multiplexing the first optical signals of at least two passes into a first mixed optical signal, The processing unit is further used to demultiplex the received second mixed optical signal into at least two second optical signals, each corresponding to a different wavelength. The conversion unit is further used to convert the at least two-pass second optical signal into at least two-pass second electrical signal. Each of the signal conversion modules is connected to a core switch and a passive wavelength division box, and the core switch is used to transmit the first electrical signal of at least two passes to the signal conversion module and to receive the second electrical signal of at least two passes from the signal conversion module. The passive wavelength division box is used to receive the first mixed optical signal from the signal conversion module, demultiplex the first mixed optical signal into at least two-pass third optical signals, transmit the at least two-pass third optical signals to at least two remote optical modules, receive at least two two-pass fourth optical signals transmitted by the at least two remote optical modules, and multiplex the at least two-pass fourth optical signals into the second mixed optical signal.

2. The first electrical signal of the aforementioned two passes is an electrical signal emitted by the core switch, The signal conversion module according to claim 1, wherein the second mixed optical signal is a mixed optical signal obtained by multiplexing a plurality of optical signals emitted by an access switch.

3. The aforementioned conversion unit is A color laser subunit for converting a received first electrical signal (at least two passes) into a first optical signal (at least two passes) corresponding to different wavelengths, The signal conversion module according to claim 1, further comprising a detector subunit for converting the received at least two-pass second optical signal into at least two-pass second electrical signals.

4. The aforementioned processing unit is An internal multiplexer subunit for multiplexing the received first optical signal of at least two passes into a first mixed optical signal, The signal conversion module according to claim 1, further comprising an internal demultiplexer subunit for demultiplexing the received second mixed optical signal into at least two-pass second optical signals corresponding to different wavelengths.

5. The aforementioned internal multiplexer subunit is Multiple first-stage internal multiplexers for multiplexing the received first optical signal of at least two passes into a third mixed optical signal and a fourth mixed optical signal, It includes a second-stage internal multiplexer for multiplexing the third mixed optical signal and the fourth mixed optical signal into the first mixed optical signal, The first optical signal of at least two passes includes at least four first optical signals, and / or, The aforementioned internal demultiplexer subunit is A first-stage internal demultiplexer module for demultiplexing the received second mixed optical signal into at least two-pass mixed optical signals, It includes a plurality of second-stage internal demultiplexer modules for demultiplexing the at least two-pass mixed optical signal into a plurality of second optical signals, The signal conversion module according to claim 4, wherein the plurality of second optical signals include at least four-pass second optical signals.

6. The processing unit further includes a filter, The signal conversion module according to claim 1, wherein the filter is used to filter the interference signal to obtain the second mixed optical signal.

7. The signal conversion module according to claim 6, wherein the filter comprises a first filter and a second filter, the first filter being used to allow light having a wavelength in a first wavelength band to pass through, the second filter being used to allow light having a wavelength in a second wavelength band to pass through, the first wavelength band and the second wavelength band being in different ranges, and the second mixed optical signal comprising light having a wavelength in the first wavelength band and light having a wavelength in the second wavelength band.

8. The signal conversion module further includes a communication unit, The signal conversion module according to claim 1, wherein the communication unit is used to transmit the first mixed optical signal and / or receive the second mixed optical signal via an optical fiber.

9. The signal conversion module according to claim 8, wherein the communication unit is an external multiplexer / demultiplexer module.

10. The aforementioned signal conversion module is Gold finger connector for connecting to the core switch, The signal conversion module according to any one of claims 1 to 9, further comprising an optical fiber interface for connecting to an optical fiber that transmits the first mixed optical signal.

11. A signal conversion method, The signal conversion module receives at least two-pass first electrical signals, The signal conversion module converts the first electrical signal of at least two passes into a first optical signal of at least two passes corresponding to different wavelengths. The signal conversion module multiplexes the first optical signal of at least two passes into a first mixed optical signal, The signal conversion module includes transmitting the first mixed optical signal, A signal conversion method comprising the following: each signal conversion module is connected to a core switch and a passive wavelength division box, the core switch is used to transmit the first electrical signal of at least two passes to the signal conversion module, and the passive wavelength division box is used to receive the first mixed optical signal from the signal conversion module, demultiplex the first mixed optical signal into a third optical signal of at least two passes, and transmit the third optical signal of at least two passes to at least two remote optical modules.

12. A fiber optic transmission system, A core switch for providing at least two passes of a first electrical signal to a signal conversion module and for receiving at least two passes of a second electrical signal transmitted by the signal conversion module, A signal conversion module for receiving the first electrical signal of at least two passes provided by the core switch, generating a first optical signal of at least two passes based on the first electrical signal of at least two passes, multiplexing the first optical signal of at least two passes into a first mixed optical signal, transmitting the first mixed optical signal to a passive wavelength division box, receiving a second mixed optical signal transmitted by the passive wavelength division box, demultiplexing the second mixed optical signal into a second optical signal of at least two passes, converting the second optical signal of at least two passes into a second electrical signal of at least two passes, and transmitting the second electrical signal of at least two passes to the core switch, A passive wavelength division box for receiving the first mixed optical signal transmitted by the signal conversion module, demultiplexing the first mixed optical signal into a third optical signal with at least two passes, transmitting the third optical signal with at least two passes to at least two remote optical modules, receiving a fourth optical signal with at least two passes transmitted by the at least two remote optical modules, and multiplexing the fourth optical signal with at least two passes to the second mixed optical signal, The at least two remote optical modules for receiving the at least two-pass third optical signal, generating the at least two-pass third electrical signal based on the received at least two-pass third optical signal, transmitting the at least two-pass third electrical signal to at least two access switches, receiving the at least two two-pass fourth electrical signal transmitted by the at least two access switches, generating the at least two-pass fourth optical signal based on the at least two-pass fourth electrical signal, and transmitting the at least two-pass fourth optical signal to the passive wavelength division box, An optical fiber transmission system comprising at least two access switches for receiving the third electrical signal of at least two passes transmitted by at least two of the remote optical modules and for transmitting the fourth electrical signal of at least two passes to at least two of the remote optical modules.

13. A computer program product comprising a computer program, wherein when the computer program is executed by a processor, the method according to claim 11 is realized.

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