Optical module, optical module calibration system and method

Abstract

The present invention provides an optical module, an optical module calibration system and a method. The optical module comprises two groups of OSW single disks of the same number, wherein one group of OSW single disks is a receiving single disk for receiving optical signals, and the other group of OSW single disks is an output single disk for outputting optical signals. Each receiving single disk is connected to each output single disk in a preset manner, and a port on each receiving single disk is connected to a port on each output single disk in a one-to-one correspondence, thereby avoiding an overly complicated connection process due to too many ports on the OSW single disk; by arbitrarily connecting most of the ports on the receiving single disk with most of the ports on the output single disk, the complexity of the connection process is simplified, and some ports with too large insertion loss or too small insertion loss are combined and connected, thereby reducing the insertion loss value after connection.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to an optical module, an optical module calibration system and a method. Background Art

[0002] In the existing P*P optical switch production process, there are usually a large number of ports that need to be connected one by one in a specified way. The fiber is coiled according to the specified optical path, and the line sequence is complicated and easy to make mistakes. For example, in the production process of 16*16 MEMS OSW, there are 256 optical channels. It is difficult to match the ports during the implementation process, and the line sequence of the connection process is complicated and easy to make mistakes.

[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to simplify the method of correspondingly connecting ports in an OSW single disk of an optical module to improve the efficiency of manufacturing a P*P optical switch.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, an optical module includes P first target single disks and P second target single disks, each of the first target single disks includes a first target input port and P first target output ports, the second target single disk includes P second target input ports and one second target output port, and the P first target output ports are connected one-to-one with the P second target input ports in a preset manner;

[0007] Wherein, the first target single disk and the second target single disk are both OSW single disks.

[0008] Preferably, the P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically including:

[0009] Each first target single disk and each second target single disk are connected via a connection link, one end of the connection link is connected to any one of the P first target output ports, and the other end of the connection link is connected to any one of the P second target input ports.

[0010] Preferably, the P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically including:

[0011] Sort all first target output ports in the P first target single disks from large to small according to the factory insertion loss values, and sort all second target input ports in the P second target single disks from large to small according to the factory insertion loss values;

[0012] Each of the first target single disks is connected to each of the second target single disks via a connection link;

[0013] According to the size of the insertion loss value, a suitable port is selected from the P first target output ports to be connected to one end of the connection link, and according to the size of the insertion loss value, a suitable port is selected from the P second target input ports to be connected to the other end of the connection link.

[0014] Preferably, the selecting a suitable port from the P first target output ports to connect to one end of the connection link according to the size of the insertion loss value, and selecting a suitable port from the P second target input ports to connect to the other end of the connection link according to the size of the insertion loss value comprises:

[0015] According to the size of the insertion loss value, the P first target output ports are sorted in sequence, and a sequence number is set for each first target output port according to the sequence;

[0016] According to the size of the insertion loss value, the P second target input ports are sorted in reverse order, and a sequence number is set for each first target output port according to the reverse order;

[0017] The first target output port and the second target input port having the same sequence number are connected to two ends of the same connection link.

[0018] In a second aspect, an optical module calibration system includes: a calibration unit, a first single disk, a second single disk, a light source, and an optical power meter, wherein the first single disk includes a first input port and P first output ports, the second single disk includes P second input ports and one second output port, the optical module calibration system is used to calibrate the optical module, the target optical module includes P first target input ports and P second target output ports, and the target optical module is provided with P×P optical channels, wherein:

[0019] Each of the first output ports is used to connect to a corresponding first target input port, and each of the second input ports is used to connect to a corresponding second target output port;

[0020] The light source is connected to the first input port and is used to output an optical signal;

[0021] The optical power meter is connected to the second output port and is used to detect the optical signal to obtain the optical power;

[0022] The calibration unit is connected to the optical power meter, and is used for receiving optical power, performing insertion loss detection on each optical channel according to the optical power, and sending the calibrated dac value corresponding to the minimum insertion loss to the target optical module.

[0023] In a third aspect, an optical module calibration method is provided, wherein the method is applied to the optical module calibration system to calibrate the optical module, and the method comprises:

[0024] Pre-entering the initial dac values ​​of all ports in the target optical module into the target optical module;

[0025] Find all connection links between the P first target single disks and the P second target single disks of the target optical module, and upload the port positions at both ends of all the connection links and the corresponding port initial dac values ​​to the calibration unit;

[0026] The connection between the two ends of the preset connection path and the first single disk and the second single disk is opened, and the optical power on the preset connection path is measured. The calibration unit records the corresponding insertion loss and calibrates the preset connection path at the same time. The calibrated dac value corresponding to the minimum insertion loss is sent to the target optical module and saved, thereby completing the calibration of the preset connection path.

[0027] Preferably, the step of finding all connection links between the P first target single disks and the P second target single disks of the target optical module specifically includes:

[0028] Each first target output port in the P first target single disks of the target optical module is opened separately in sequence, and each second target input port in the second target single disk is opened separately in sequence with a single port opened, and the output power is measured by the optical power meter at the same time;

[0029] When the output power is greater than a preset threshold, it indicates that a connection link is provided between the corresponding opened first target output terminal and the corresponding opened second target input terminal;

[0030] When the output power is less than or equal to the preset threshold, it means that no connection link is set between the corresponding opened first target output end and the corresponding opened second target input end.

[0031] Preferably, the calibration of the preset connection path specifically includes:

[0032] Find the dac values ​​corresponding to the ports at both ends of the preset connection path in the calibration unit, wherein the dac values ​​of the first target output end of the preset connection path are INx_CHy_Xdac and INx_CHy_Ydac, and the dac values ​​of the second target input end of the preset connection path are OUTm_CHn_Xdac and OUTm_CHn_Ydac;

[0033] The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, and the corresponding insertion loss is recorded during the regulation process;

[0034] The INx_CHy_Xdac is the dac sampling value Xdac of the yth first target output terminal of the xth first target single disk, the INx_CHy_Ydac is the dac sampling value Ydac of the yth first target output terminal of the xth first target single disk, the OUTm_CHn_Xdac is the dac sampling value Xdac of the nth second target input terminal of the mth second target single disk, and the OUTm_CHn_Ydac is the dac sampling value Ydac of the nth second target input terminal of the mth second target single disk;

[0035] Among them, 1≤x≤P, 1≤y≤P, 1≤m≤P, 1≤n≤P.

[0036] Preferably, the INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, specifically including:

[0037] The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are respectively started from the initial dac value, and are regulated within the preset regulation range while recording the corresponding insertion loss value. When one of the dac values ​​is regulated, the dac value is adjusted back to the initial dac value, and then other dac values ​​are regulated until all dac values ​​are regulated and the insertion loss values ​​are recorded accordingly.

[0038] Preferably, the step of regulating the INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac within a preset regulation range separately further comprises:

[0039] The calibration unit sends the adjusted dac value to the target optical module according to the OSP private OSW calibration protocol package. The target optical module converts the received dac value accordingly and sets it to the corresponding preset connection path, and returns a successful setting response to the calibration unit. After receiving the successful setting response, the calibration software records the power of the optical power meter corresponding to the dac value, thereby deriving the corresponding insertion loss.

[0040] The present invention provides an optical module, an optical module calibration system and method, wherein the optical module comprises two groups of OSW single disks of the same number, wherein one group of OSW single disks is a receiving single disk for receiving optical signals, and the other group of OSW single disks is an output single disk for outputting optical signals, each receiving single disk is connected to each output single disk in a corresponding manner by a preset method, and a port on each receiving single disk is connected to a port on each output single disk in a one-to-one corresponding manner, thereby avoiding an overly complicated connection process due to too many ports on the OSW single disk;

[0041] Furthermore, by arbitrarily connecting most of the ports on the receiving disks with most of the ports on the output disks, the complexity of the connection process is simplified, and some ports with too large or too small insertion losses are combined and connected, thereby reducing the insertion loss value after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 This is an internal connection diagram of a 16×16 OSW single disk provided by an embodiment of the present invention;

[0044] Figure 2 It is an internal channel table of a 16×16 OSW single disk provided by an embodiment of the present invention;

[0045] Figure 3 This is a factory specification table of a 1×16 OSW single disk provided by an embodiment of the present invention;

[0046] Figure 4 is a system block diagram of an optical module calibration system provided by an embodiment of the present invention;

[0047] Figure 5 is a method flow chart of an optical module calibration method provided by an embodiment of the present invention;

[0048] Figure 6It is a flow chart of a method for regulating INx_CHy_Xdac of an optical module calibration method provided by an embodiment of the present invention;

[0049] Figure 7 It is a flow chart of a method for regulating INx_CHy_Ydac of an optical module calibration method provided by an embodiment of the present invention;

[0050] Figure 8 It is a flow chart of a method for regulating OUTm_CHn_Xdac of an optical module calibration method provided by an embodiment of the present invention;

[0051] Fig. 9 The present invention is a flowchart of a method for adjusting OUTm_CHn_Ydac in an optical module calibration method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0053] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0054] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] Embodiment 1:

[0056] Embodiment 1 of the present invention provides an optical module, including P first target single disks and P second target single disks, each of the first target single disks includes a first target input port and P first target output ports, the second target single disk includes P second target input ports and one second target output port, and the P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner. Wherein, the first target single disk and the second target single disk are both OSW single disks.

[0057] In this embodiment, the optical module is a P×P OSW single disk, and the first target single disk and the second target single disk are both 1×P OSW single disk.

[0058] In the first target single disk, there are P connection paths between the first target input port and the P first target output ports inside the first target single disk, and each first target output port has its own DAC sampling value corresponding to the factory Ux voltage value and Uy voltage value. By sending the corresponding Ux voltage value and Uy voltage value to the first target single disk through the main control, the connection path between the corresponding first target output port and the first target input port can be opened, thereby controlling the optical signal to be output from the first target output port preset in the first target single disk.

[0059] In the second target single disk, there are P connection paths between the second target output port and the P second target input ports inside the second target single disk, and each second target input port has its own DAC sampling value corresponding to the factory Ux voltage value and Uy voltage value. By sending the corresponding Ux voltage value and Uy voltage value to the second target single disk through the main control, the connection path between the corresponding second target input port and the second target output port can be opened, so as to control the preset second target input port to output the received optical signal.

[0060] The first target single disk and the second target single disk can both be understood as a multi-channel switch. The aforementioned input port and output port do not limit a certain port to only input signals or only output signals. They are just distinguished according to the flow direction of signals in certain situations for the convenience of description.

[0061] In this embodiment, each first target single disk inside the target optical module is connected to each second target single disk via a connection link, and each first target output port is connected to each second target input port in a one-to-one correspondence; it is worth mentioning that the preset method needs to ensure that there are no two or more connection links between a first target single disk and a second target single disk, and the same first target output port cannot be connected to two different second target input ports.

[0062] This embodiment provides an optical module, which includes two groups of OSW single disks of the same number, wherein one group of OSW single disks is a receiving single disk for receiving optical signals, and the other group of OSW single disks is an output single disk for outputting optical signals. Each receiving single disk is connected to each output single disk in a preset manner, and the port on each receiving single disk is connected to the port on each output single disk in a one-to-one correspondence, thereby avoiding an overly complicated connection process due to too many ports on the OSW single disk.

[0063] like Figure 2As shown, taking the existing 16×16 OSW single disk on the market as an example, the IN port is the input end of a 1×16 OSW single disk, the OUT port is the output end of a 1×16 OSW single disk, and the 16 IN ports and 16 OUT ports together constitute 256 channels. Normally connecting 256 channels is very complicated and cumbersome.

[0064] In the existing P×P OSW single disk, each port on the input 1×P OSW single disk and each port on the receiving 1×POSW single disk need to be connected one-to-one according to the port serial number. However, if they are connected in a specified manner, due to the large number of ports, the optical path fiber sequence is often complicated, the connection workload is large and prone to errors. Therefore, this embodiment provides a preferred method to simplify the connection between ports.

[0065] The P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically including:

[0066] Each first target single disk and each second target single disk are connected via a connection link, one end of the connection link is connected to any one of the P first target output ports, and the other end of the connection link is connected to any one of the P second target input ports.

[0067] like Figure 1 As shown, the ports between the P×P OSW single disks are arbitrarily connected.

[0068] When the two ends of the connection link are connected to any first target output port and second target input port, it is necessary to ensure that there are no two or more connection links between a first target single disk and a second target single disk, and the same first target output port cannot be connected to two different second target input ports.

[0069] After arbitrarily connecting the ports of the first target disk and the ports of the second target disk, establish the connection relationship between the ports according to the "channel finding" method below, and then optimize the insertion loss of each connection path by subsequently calibrating the DAC value of each connection path.

[0070] Embodiment 2:

[0071] Based on Embodiment 1, this embodiment of the present invention provides another method for connecting P first target output ports with P second target input ports in a one-to-one correspondence.

[0072] Because each port in the 1×P OSW single disk is set with a factory DAC value when it leaves the factory, the factory DAC value carries a reference factory insertion loss value, and the factory insertion loss values ​​of different ports are different.

[0073] like Figure 3 The following table shows the data of 16 channels of a 1×16 OSW disk when it is shipped. Figure 3 Among them, P1-P16 represent 16 channels, Ux and Uy represent the voltage values ​​on each channel, IL is the insertion loss value corresponding to each channel, and the blackened insertion loss value is a higher insertion loss value.

[0074] When the first target output port with a larger factory insertion loss value is connected to the second target input port with a larger factory insertion loss value, the insertion loss value of the connection path will be too large before calibration. After subsequent calibration and insertion loss optimization, the insertion loss value may still be large, thereby affecting the optical signal transmission. Therefore, in this embodiment, the first target output port with a relatively large factory insertion loss is connected to the second target input port with a relatively small factory insertion loss, and the first target output port with a relatively small factory insertion loss is connected to the second target input port with a relatively large factory insertion loss, thereby reducing the overall insertion loss of each connection path in the P×P OSW single disk.

[0075] The selecting, according to the size of the insertion loss value, a suitable port from the P first target output ports to connect to one end of the connection link, and selecting, according to the size of the insertion loss value, a suitable port from the P second target input ports to connect to the other end of the connection link comprises:

[0076] According to the size of the insertion loss value, the P first target output ports are sorted in sequence, and a sequence number is set for each first target output port according to the sequence; wherein the aforementioned sequence sorting means that the target output port with a smaller insertion loss value is closer to the front and the corresponding sequence number is smaller.

[0077] According to the size of the insertion loss value, the P second target input ports are sorted in reverse order, and a serial number is set for each first target output port according to the reverse order; wherein the aforementioned reverse order means that the target output port with a smaller insertion loss value is closer to the end and the corresponding serial number is larger.

[0078] The first target output port and the second target input port having the same sequence number are connected to two ends of the same connection link.

[0079] For example, P is 6, the P first target output ports are P11 to P16, the P second target input ports are P21 to P26, and the P first target output ports are sorted by insertion loss value as [P16, P14, P13, P11, P12, P15], that is, the insertion loss value of P16 is the smallest, and the insertion loss value of P15 is the largest. The sequence number corresponding to P16 is 1, the sequence number corresponding to P14 is 2, and the sequence number corresponding to P15 is 6; the P second target input ports are sorted by insertion loss value as [P16, P14, P13, P11, P12, P15], that is, the insertion loss value of P16 is the smallest, and the insertion loss value of P15 is the largest. The sequence number corresponding to P16 is 1, the sequence number corresponding to P14 is 2, and the sequence number corresponding to P15 is 6. The order of the ports according to the insertion loss value is [P21, P24, P22, P25, P23, P26], that is, the insertion loss value of P21 is the largest, and the insertion loss value of P26 is the smallest. The sequence number corresponding to P21 is 1, the sequence number corresponding to P24 is 2...The sequence number corresponding to P25 is 6, then, P16 and P21 are connected to the two ends of the same connection link, P13 and P24 are connected to the two ends of the same connection link...P15 and P26 are connected to the two ends of the same connection link.

[0080] All ports in the P×P OSW single disk are matched and connected in order and in reverse order to ensure that all connection paths are in the minimum state according to the factory insertion loss value after connection. Under this state, subsequent calibration and insertion loss optimization can be performed to ensure that each connection path in the final P×P OSW single disk has a relatively excellent insertion loss.

[0081] Embodiment 3:

[0082] Based on Example 1 and Example 2, the embodiment of the present invention combines the connection methods in Example 1 and Example 2 to provide another method for connecting P first target output ports with P second target input ports in a one-to-one correspondence.

[0083] Considering that the factory insertion loss of each port in a 1×P OSW single disk varies in size, the factory insertion loss values ​​of most ports are usually within a normal range, and only a small number of ports have factory insertion loss values ​​that are too large or too small. If all ports are connected arbitrarily, the connection path where the port with a larger factory insertion loss value is located may have too high insertion loss. If all ports are connected in a sequential and reverse order according to the sequence numbers sorted by the factory insertion loss values, the workload is too large, and the connection is complex and prone to errors. Therefore, this embodiment provides a preferred connection method.

[0084] The P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically including:

[0085] Sort all first target output ports in the P first target single disks from large to small according to the factory insertion loss values, and sort all second target input ports in the P second target single disks from large to small according to the factory insertion loss values;

[0086] Each of the first target single disks is connected to each of the second target single disks via a connection link;

[0087] According to the size of the insertion loss value, a suitable port is selected from the P first target output ports to be connected to one end of the connection link, and according to the size of the insertion loss value, a suitable port is selected from the P second target input ports to be connected to the other end of the connection link.

[0088] According to the specification of the OSW single disk, determine the insertion loss values ​​of all ports on the P×P OSW single disk, find all ports whose factory insertion loss values ​​are greater than the first preset insertion loss value, that is, ports whose factory insertion loss values ​​are too large, find all ports whose factory insertion loss values ​​are less than the second preset insertion loss value, that is, ports whose factory insertion loss values ​​are too small;

[0089] Sorting all the first target output ports found out in order according to the factory insertion loss value, and setting a sequence number for each first target output port found out according to the sequence;

[0090] Sort all found second target input ports in reverse order according to the factory insertion loss value, and set a sequence number for each found second target input port according to the reverse order;

[0091] The first target output port and the second target input port with the same serial number are connected to both ends of the same connection link, so that the port with too high factory insertion loss value found in the P×P OSW single disk is connected to the port with lower factory value found, thereby avoiding the influence caused by too high insertion loss value of the P×P OSW single disk.

[0092] The port insertion loss values ​​of the P×P OSW single disk whose factory insertion loss values ​​are less than or equal to the first preset insertion loss value and greater than or equal to the second preset insertion loss value are within the regular range. These ports usually account for the majority of all ports. The ports within the range are arbitrarily connected to each other in a one-to-one correspondence, and the connection needs to ensure that there are no two or more connection links between a first target single disk and a second target single disk, and the same first target output port cannot be connected to two different second target input ports.

[0093] The first preset insertion loss value and the second preset insertion loss value are both set by those skilled in the art according to actual scenarios, and all applicable set values ​​should be within the protection scope of this embodiment.

[0094] The above connection avoids the influence caused by the excessive factory insertion loss value and avoids the complexity of connecting a large number of ports.

[0095] Embodiment 4:

[0096] Based on embodiments 1-3, the embodiment of the present invention provides an optical module calibration system, so as to calibrate the connection path in the above optical module and optimize the insertion loss.

[0097] like Figure 4 As shown, the optical module calibration system includes: a calibration unit, a first single disk, a second single disk, a light source and an optical power meter, the first single disk includes a first input port and P first output ports, the second single disk includes P second input ports and one second output port, the optical module calibration system is used to calibrate the optical module, the target optical module includes P first target input ports and P second target output ports, and the target optical module is provided with P×P optical channels, wherein:

[0098] Each of the first output ports is used to connect to a corresponding first target input port, and each of the second input ports is used to connect to a corresponding second target output port;

[0099] Figure 4 The IN port is the input port, and the OUT port is the output port.

[0100] In this embodiment, the first single disk, the optical module and the second single disk are all connected to the main control, and the main control is used to control the switch of each port of the first single disk, the optical module and the second single disk.

[0101] The first single disk and the second single disk are both 1×P OSW single disks in this embodiment. In this embodiment, when calibrating the connection path on the optical module, it is necessary to connect the input end of the corresponding connection path to the light source and the output end to the optical power meter. The main control sends the changed voltage value to the two ends of the connection path, so as to change the DAC value accordingly. In this process, the optical power meter records the change of the insertion loss of the connection path. There are P×P connection paths in the P×P OSW single disk. If the light source and the optical power meter are directly connected to the P×P connection paths in sequence for calibration, it is too cumbersome and inconvenient. Therefore, in this embodiment, two 1×POSW single disks are introduced at the input end and the output end of the P×P OSW single disk, that is, the first single disk and the second single disk, and the light source and the optical power meter are connected to the first single disk and the second single disk respectively, so that the first single disk and the second single disk act as optical switches.

[0102] The main control controls the switch of the preset first target single disk by adjusting each first output port in the first single disk, and the first target single disk controls the switch of the preset first target output port through the voltage value sent by the main control; the main control controls the connection with the preset second target single disk by adjusting each second input port in the second single disk, and the second target single disk adjusts the connection between the second target output port and the preset second target input port through the voltage value sent by the main control; in summary, the connection of the two ends of the preset connection path is achieved, and then subsequent calibration and insertion loss optimization are carried out.

[0103] The light source is connected to the first input port and is used to output an optical signal;

[0104] The optical power meter is connected to the second output port and is used to receive the optical signal for detection to obtain the optical power;

[0105] The calibration unit is connected to the optical power meter, and is used for receiving optical power, performing insertion loss detection on each optical channel according to the optical power, and sending the calibrated dac value corresponding to the minimum insertion loss to the target optical module.

[0106] The main control and the optical power meter are both connected to a calibration unit, which is used to receive optical power information from the optical power meter to measure insertion loss, regulate the switches of each connection path, and also regulate the DAC values ​​at both ends of each connection path and set the DAC values.

[0107] Embodiment 5:

[0108] Based on Embodiments 1-4, the embodiment of the present invention provides an optical module calibration method, which is applied to the optical module calibration system of Embodiment 4, and the optical modules in Embodiments 1 to 3 are calibrated by the optical module calibration system;

[0109] like Figure 5 As shown, the method flow is as follows:

[0110] In step 101, initial dac values ​​of all ports in the target optical module are pre-entered into the target optical module.

[0111] Before calibration, the calibration unit sends the factory DAC values ​​corresponding to all ports to the target optical module through the main control according to the specification of the 1×P OSW single disk corresponding to the first target single disk and the second target single disk in the target optical module, combined with the SN number of each 1×POSW corresponding to the P×P OSW single disk port of the target optical module itself.

[0112] In step 102, all connection links between the P first target single disks and the P second target single disks of the target optical module are found.

[0113] The optical power threshold test is performed by controlling the optical signal to sequentially open each port in the target optical module, and it is determined through which port the first target single disk and the second target single disk are connected.

[0114] In step 103, the port positions at both ends of all the connection links and the corresponding port initial dac values ​​are uploaded to the calibration unit.

[0115] After finding the positions of the ports at both ends of all connection links, the calibration unit needs to be informed so that the calibration unit can perform calibration and insertion loss optimization by controlling the preset connection path through the main control.

[0116] In step 104, the connection between the two ends of the preset connection path and the first single disk and the second single disk is opened.

[0117] The ports at both ends of the preset connection path are a preset first target output port and a preset second target input port, and the preset first target output port and the preset second target input port are respectively located on the preset first target single disk and the preset second target single disk.

[0118] When the calibration unit selects one of the preset connection paths of all the connection paths in the target optical module for calibration and insertion loss optimization, a corresponding voltage value is sent to the first single disk to connect it with the preset first target single disk, and a corresponding voltage value is sent to the preset first target single disk to open the preset first target output port, thereby opening the connection between the preset connection path and the first single disk; a corresponding voltage value is sent to the second single disk to connect it with the preset second target single disk, and a corresponding voltage value is sent to the preset second target single disk to open the preset second target input port, thereby opening the connection between the preset connection path and the second single disk.

[0119] In step 105, the optical power on the preset connection path is measured, and the calibration unit records the corresponding insertion loss and calibrates the preset connection path at the same time.

[0120] When the selected preset connection path is opened, the calibration unit sends the adjusted DAC value to the target optical module through the main control, and the target optical module converts the received DAC value into the DAC value of ADC5535 and sets it to the preset first target output port and the preset second target input port accordingly.

[0121] In step 106, the calibrated dac value corresponding to the minimum insertion loss is sent to the target optical module and saved, thereby completing the calibration of the preset connection path.

[0122] After the DAC values ​​of the preset first target output port and the preset second target input port are adjusted and set within the preset range, the minimum insertion loss value recorded in this process is found, and according to the OSP private OSW calibration protocol, the calibrated DAC value group corresponding to the minimum insertion loss value is sent to the target optical module through the main control and stored in the E2PROM of the target optical module to complete the calibration of the preset connection path. The connection path corresponding to the DAC value is the calibrated connection path with the minimum insertion loss. The subsequent target optical module calls the calibrated DAC value from the E2PROM and sets it on the corresponding port to obtain the connection path after the insertion loss of the port is optimized.

[0123] In this embodiment, all preset connection paths are numbered according to the arrangement order of the P×P preset first target output ports on the first target disk, and there are a total of P×P connection paths. When one connection path is calibrated, the next connection path is calibrated in order of sequence number until all P×P connection paths are calibrated.

[0124] The step of finding all connection links between the P first target single disks and the P second target single disks of the target optical module specifically includes:

[0125] Each first target output port in the P first target single disks of the target optical module is opened separately in sequence, and each second target input port in the second target single disk is opened separately in sequence with a single port opened, and the output power is measured by the optical power meter at the same time;

[0126] When the output power is greater than a preset threshold, it indicates that a connection link is provided between the corresponding opened first target output terminal and the corresponding opened second target input terminal;

[0127] When the output power is less than or equal to the preset threshold, it means that no connection link is set between the corresponding opened first target output end and the corresponding opened second target input end.

[0128] The preset threshold is set by those skilled in the art according to actual conditions, and all applicable preset threshold settings should be within the protection scope of this embodiment.

[0129] The calibration of the preset connection path specifically includes:

[0130] Find the dac values ​​corresponding to the ports at both ends of the preset connection path in the calibration unit, wherein the dac values ​​of the first target output end of the preset connection path are INx_CHy_Xdac and INx_CHy_Ydac, and the dac values ​​of the second target input end of the preset connection path are OUTm_CHn_Xdac and OUTm_CHn_Ydac;

[0131] The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, and the corresponding insertion loss is recorded during the regulation process;

[0132] The INx_CHy_Xdac is the dac sampling value Xdac of the yth first target output terminal of the xth first target single disk, the INx_CHy_Ydac is the dac sampling value Ydac of the yth first target output terminal of the xth first target single disk, the OUTm_CHn_Xdac is the dac sampling value Xdac of the nth second target input terminal of the mth second target single disk, and the OUTm_CHn_Ydac is the dac sampling value Ydac of the nth second target input terminal of the mth second target single disk;

[0133] Among them, 1≤x≤P, 1≤y≤P, 1≤m≤P, 1≤n≤P.

[0134] The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are respectively started from the initial dac value, and are regulated within the preset regulation range while recording the corresponding insertion loss value. When one of the dac values ​​is regulated, the dac value is adjusted back to the initial dac value, and then other dac values ​​are regulated until all dac values ​​are regulated and the insertion loss values ​​are recorded accordingly.

[0135] The initial DAC value is a factory DAC value that is entered into the target optical module in advance by the calibration unit according to the corresponding model specification.

[0136] In this embodiment, the preset control interval is to increase or decrease the DAC value of the port by a preset difference within the preset control interval and set it on the corresponding port, record the insertion loss value correspondingly during each increase or decrease, and stop increasing or decreasing after exceeding the preset control interval.

[0137] It is worth mentioning that when adjusting the four DAC values ​​of the two end ports, only one of the four insertion loss values ​​INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac is adjusted within the preset control range each time, until the DAC value exceeds the preset control range, and then the other DAC value is adjusted.

[0138] The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, further comprising:

[0139] The calibration unit sends the adjusted dac value to the target optical module according to the OSP private OSW calibration protocol package. The target optical module converts the received dac value accordingly and sets it to the corresponding preset connection path, and returns a successful setting response to the calibration unit. After receiving the successful setting response, the calibration software records the power of the optical power meter corresponding to the dac value, thereby deriving the corresponding insertion loss.

[0140] In this embodiment, the target optical module converts the received dac value into a DAC value of ADC5535 and then sets it to the preset connection path.

[0141] Embodiment 6:

[0142] Based on Example 5, this embodiment of the present invention calibrates a connection path in a target optical module by demonstrating the optical module calibration method in an actual scenario.

[0143] In this embodiment, P=16, the preset control interval is [-50, 50], and the increment is 2.

[0144] like Figure 6 As shown, INx_CHy_Xdac of the preset first target output port of the preset connection path is first regulated, and the process is as follows:

[0145] In step 201, the calibration unit sends the factory DAC values ​​corresponding to all ports to the target optical module through the main control according to the specification of the 1×16OSW single disk corresponding to the first target single disk and the second target single disk in the target optical module, combined with the SN number of each 1×16OSW corresponding to the 16×16OSW single disk port of the target optical module itself, where Δ1=-50.

[0146] In step 202, the switches between the first single disk and the second single disk and the preset connection path are turned on.

[0147] In step 203, the calibration unit packages the set INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac according to the OSP private OSW calibration protocol and sends them to the target optical module through the main control.

[0148] In step 204, the target optical module converts the DAC value sent by the calibration unit into the DAC value of ADC5535, sets it to the preset connection path, and returns a setting success to the calibration unit.

[0149] In step 205, after receiving the setting success response, the calibration unit reads and records the power values ​​of the optical power meter corresponding to INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac to obtain the insertion loss value under the DAC value.

[0150] In step 206, INx_CHy_Xdac=INx_CHy_Xdac+Δ1, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac remain unchanged.

[0151] In step 207 , it is determined whether Δ1 is less than or equal to 50. If so, the process jumps to step 208 . If not, the process jumps to step 209 .

[0152] In step 208 , Δ1=Δ1+2, and the process jumps to step 203 .

[0153] In step 209, INx_CHy_Xdac=INx_CHy_Xdac-Δ1, INx_CHy_Xdac is adjusted back to the initial value.

[0154] In step 210, the calibration unit records the insertion loss value during the INx_CHy_Xdac regulation process.

[0155] like Figure 7 As shown, the INx_CHy_Ydac of the preset first target output port of the preset connection path is regulated, and the process is as follows:

[0156] In step 301, the calibration unit packages the set INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac according to the OSP private OSW calibration protocol and sends them to the target optical module through the master control, where Δ2=-50.

[0157] In step 302, the target optical module converts the DAC value sent by the calibration unit into the DAC value of ADC5535, sets it to the preset connection path, and returns the setting success to the calibration unit.

[0158] In step 303, after receiving the setting success response, the calibration unit reads and records the power values ​​of the optical power meter corresponding to INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac to obtain the insertion loss value under the DAC value.

[0159] In step 304, INx_CHy_Ydac=INx_CHy_Ydac+Δ2, INx_CHy_Xdac, OUTm_CHn_Xdac and OUTm_CHn_Ydac remain unchanged.

[0160] In step 305 , it is determined whether Δ2 is less than or equal to 50. If so, the process jumps to step 306 . If not, the process jumps to step 307 .

[0161] In step 306 , Δ2=Δ2+2, and the process jumps to step 301 .

[0162] In step 307, INx_CHy_Ydac=INx_CHy_Ydac-Δ2, and INx_CHy_Ydac is adjusted back to the initial value.

[0163] In step 308, the calibration unit records the insertion loss value during the INx_CHy_Ydac regulation process.

[0164] like Figure 8 As shown, the OUTm_CHn_Xdac of the preset second target input port of the preset connection path is regulated, and the process is as follows:

[0165] In step 401, the calibration unit packages the set INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac according to the OSP private OSW calibration protocol and sends them to the target optical module through the main control, where Δ3=-50.

[0166] In step 402, the target optical module converts the DAC value sent by the calibration unit into the DAC value of ADC5535, sets it to the preset connection path, and returns the setting success to the calibration unit.

[0167] In step 403, after receiving the setting success response, the calibration unit reads and records the power values ​​of the optical power meter corresponding to INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac to obtain the insertion loss value under the DAC value.

[0168] In step 404, INx_CHy_Ydac, INx_CHy_Xdac and OUTm_CHn_Ydac remain unchanged, and OUTm_CHn_Xdac=OUTm_CHn_Xdac+Δ3.

[0169] In step 405 , it is determined whether Δ3 is less than or equal to 50. If so, the process jumps to step 406 . If not, the process jumps to step 407 .

[0170] In step 406 , Δ3=Δ3+2, jump to step 401 .

[0171] In step 407, OUTm_CHn_Xdac=OUTm_CHn_Xdac-Δ3, and OUTm_CHn_Xdac is adjusted back to the initial value.

[0172] In step 408, the calibration unit records the insertion loss value during the OUTm_CHn_Xdac regulation process.

[0173] like Fig. 9 As shown, the OUTm_CHn_Ydac of the preset second target input port of the preset connection path is regulated, and the process is as follows:

[0174] In step 501, the calibration unit packages the set INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac according to the OSP private OSW calibration protocol and sends them to the target optical module through the master control, where Δ4=-50.

[0175] In step 502, the target optical module converts the DAC value sent by the calibration unit into the DAC value of ADC5535, sets it to the preset connection path, and returns a setting success to the calibration unit.

[0176] In step 503, after receiving the setting success response, the calibration unit reads and records the power values ​​of the optical power meter corresponding to INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac to obtain the insertion loss value under the DAC value.

[0177] In step 504, INx_CHy_Ydac, INx_CHy_Xdac and OUTm_CHn_Xdac remain unchanged, and OUTm_CHn_Ydac=OUTm_CHn_Ydac+Δ4.

[0178] In step 505 , it is determined whether Δ4 is ​​less than or equal to 50. If so, the process jumps to step 506 . If not, the process jumps to step 507 .

[0179] In step 506 , Δ4=Δ4+2, jump to step 501 .

[0180] In step 507, OUTm_CHn_Ydac=OUTm_CHn_Ydac-Δ4, and OUTm_CHn_Ydac is adjusted back to the initial value.

[0181] In step 508, the calibration unit records the insertion loss value during the OUTm_CHn_Ydac regulation process.

[0182] In step 509, the calibration unit packages the calibrated INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac corresponding to the minimum insertion loss to the target optical module through the main control according to the OSP private OSW calibration protocol, and saves it to the E2PROM, thus completing the calibration process on the preset connection path.

[0183] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical module, characterized in that: The method comprises P first target single disks and P second target single disks, each of the first target single disks comprises a first target input port and P first target output ports, the second target single disk comprises P second target input ports and one second target output port, and the P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically comprising: According to the specification of the OSW single disk, determine the insertion loss values ​​of all ports on the P×POSW single disk, find all ports whose factory insertion loss values ​​are greater than the first preset insertion loss value, that is, ports whose factory insertion loss values ​​are too large, and find all ports whose factory insertion loss values ​​are less than the second preset insertion loss value, that is, ports whose factory insertion loss values ​​are too small; Sorting all the first target output ports found out in order according to the factory insertion loss value, and setting a sequence number for each first target output port found out according to the sequence; Sort all found second target input ports in reverse order according to the factory insertion loss value, and set a sequence number for each found second target input port according to the reverse order; Connect the first target output port and the second target input port with the same serial number to both ends of the same connection link, so as to connect the port with too high factory insertion loss value found in the P×POSW single disk to the port with lower factory value found, so as to avoid the influence caused by too high insertion loss value of the P×POSW single disk; The port insertion loss values ​​of the P×POSW single disk whose factory insertion loss values ​​are less than or equal to the first preset insertion loss value and greater than or equal to the second preset insertion loss value are within the regular range. These ports usually account for the majority of all ports. The ports within the range can be connected arbitrarily with one another in a one-to-one correspondence. Entering the initial dac values ​​of all ports in the target optical module into the target optical module in advance; Find all connection links between the P first target single disks and the P second target single disks of the target optical module, and upload the port positions at both ends of all the connection links and the corresponding port initial dac values ​​to the calibration unit; Opening the connection between the two ends of the preset connection path and the first single disk and the second single disk, measuring the optical power on the preset connection path, the calibration unit recording the corresponding insertion loss, calibrating the preset connection path at the same time, sending the calibrated DAC value corresponding to the minimum insertion loss to the target optical module and saving it, completing the calibration of the preset connection path; Wherein, the first target single disk and the second target single disk are both OSW single disks.

2. The optical module according to claim 1, characterized in that: The P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically including: Each first target single disk and each second target single disk are connected via a connection link, one end of the connection link is connected to any one of the P first target output ports, and the other end of the connection link is connected to any one of the P second target input ports.

3. The optical module according to claim 1, characterized in that: The P first target output ports are connected to the P second target input ports in a one-to-one correspondence according to a preset manner, specifically including: Sort all first target output ports in the P first target single disks from large to small according to the factory insertion loss values, and sort all second target input ports in the P second target single disks from large to small according to the factory insertion loss values; Each of the first target single disks is connected to each of the second target single disks via a connection link; According to the size of the insertion loss value, a suitable port is selected from the P first target output ports to connect to one end of the connection link, and according to the size of the insertion loss value, a suitable port is selected from the P second target input ports to connect to the other end of the connection link.

4. The optical module according to claim 3, characterized in that: The selecting, according to the size of the insertion loss value, a suitable port from the P first target output ports to connect to one end of the connection link, and selecting, according to the size of the insertion loss value, a suitable port from the P second target input ports to connect to the other end of the connection link comprises: According to the size of the insertion loss value, the P first target output ports are sorted in sequence, and a sequence number is set for each first target output port according to the sequence; According to the size of the insertion loss value, the P second target input ports are sorted in reverse order, and a sequence number is set for each first target output port according to the reverse order; The first target output port and the second target input port having the same sequence number are connected to two ends of the same connection link.

5. An optical module calibration system, characterized in that: include: A calibration unit, a first single disk, a second single disk, a light source and an optical power meter, wherein the first single disk comprises a first input port and P first output ports, the second single disk comprises P second input ports and one second output port, the optical module calibration system is used to calibrate the optical module according to any one of claims 1 to 4, the target optical module comprises P first target input ports and P second target output ports, and P×P optical channels are arranged in the target optical module, wherein: Each of the first output ports is used to connect to a corresponding first target input port, and each of the second input ports is used to connect to a corresponding second target output port; The light source is connected to the first input port and is used to output an optical signal; The optical power meter is connected to the second output port and is used to detect the optical signal to obtain the optical power; The calibration unit is connected to the optical power meter, and is used for receiving optical power, performing insertion loss detection on each optical channel according to the optical power, and sending the calibrated dac value corresponding to the minimum insertion loss to the target optical module.

6. A method for calibrating an optical module, characterized in that: The method is applied to the optical module calibration system according to claim 5 to calibrate the optical module according to any one of claims 1 to 4, and the method includes: Pre-entering the initial dac values ​​of all ports in the target optical module into the target optical module; Find all connection links between the P first target single disks and the P second target single disks of the target optical module, and upload the port positions at both ends of all the connection links and the corresponding port initial dac values ​​to the calibration unit; The connection between the two ends of the preset connection path and the first single disk and the second single disk is opened, and the optical power on the preset connection path is measured. The calibration unit records the corresponding insertion loss and calibrates the preset connection path at the same time. The calibrated dac value corresponding to the minimum insertion loss is sent to the target optical module and saved, thereby completing the calibration of the preset connection path.

7. The optical module calibration method according to claim 6, characterized in that: The step of finding all connection links between the P first target single disks and the P second target single disks of the target optical module specifically includes: Each first target output port in the P first target single disks of the target optical module is opened separately in sequence, and each second target input port in the second target single disk is opened separately in sequence with a single port opened, and the output power is measured by the optical power meter at the same time; When the output power is greater than a preset threshold, it indicates that a connection link is provided between the corresponding opened first target output terminal and the corresponding opened second target input terminal; When the output power is less than or equal to the preset threshold, it means that no connection link is set between the corresponding opened first target output end and the corresponding opened second target input end.

8. The optical module calibration system according to claim 6, characterized in that: The calibration of the preset connection path specifically includes: Find the dac values ​​corresponding to the ports at both ends of the preset connection path in the calibration unit, wherein the dac values ​​of the first target output end of the preset connection path are INx_CHy_Xdac and INx_CHy_Ydac, and the dac values ​​of the second target input end of the preset connection path are OUTm_CHn_Xdac and OUTm_CHn_Ydac; The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, and the corresponding insertion loss is recorded during the regulation process; The INx_CHy_Xdac is the dac sampling value Xdac of the yth first target output terminal of the xth first target single disk, the INx_CHy_Ydac is the dac sampling value Ydac of the yth first target output terminal of the xth first target single disk, the OUTm_CHn_Xdac is the dac sampling value Xdac of the nth second target input terminal of the mth second target single disk, and the OUTm_CHn_Ydac is the dac sampling value Ydac of the nth second target input terminal of the mth second target single disk; Among them, 1≤x≤P, 1≤y≤P, 1≤m≤P, 1≤n≤P.

9. The optical module calibration method according to claim 8, characterized in that: The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, specifically including: The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are respectively started from the initial dac value, and are regulated within the preset regulation range while recording the corresponding insertion loss value. When one of the dac values ​​is regulated, the dac value is adjusted back to the initial dac value, and then other dac values ​​are regulated until all dac values ​​are regulated and the insertion loss values ​​are recorded accordingly.

10. The optical module calibration method according to claim 9, characterized in that: The INx_CHy_Xdac, INx_CHy_Ydac, OUTm_CHn_Xdac and OUTm_CHn_Ydac are individually regulated within a preset regulation range, further comprising: The calibration unit sends the adjusted dac value to the target optical module according to the OSP private OSW calibration protocol package. The target optical module converts the received dac value accordingly and sets it to the corresponding preset connection path, and returns a successful setting response to the calibration unit. After receiving the successful setting response, the calibration software records the power of the optical power meter corresponding to the dac value, thereby deriving the corresponding insertion loss.

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