Xgs-pon uplink data stream signal testing device, system and method thereof

Abstract

This invention discloses an XGS-PON uplink data stream signal testing device, system, and method. The device includes: a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope. The main fiber port of the 1-to-2 fiber optic splitter is connected to the XGS-PON ONU fiber optic cable; one fiber optic port of the 1-to-2 fiber optic splitter is connected to the optical module fiber optic cable of the XGS-PON OLT device; the other fiber optic port of the 1-to-2 fiber optic splitter is connected to the input fiber optic cable of the WDM device; the output of the WDM device is connected to the input fiber optic cable of the adjustable optical power attenuator; the output of the adjustable optical power attenuator is connected to the input fiber optic cable of the signal converter; the first input of the oscilloscope is electrically connected to the output of the signal converter, and the second input of the oscilloscope is externally connected to the optical module of the XGS-PON OLT. This invention adjusts the signal emitted by the XGS-PON OLT to adapt to the parameters of different module manufacturers by measuring the positional relationship between the uplink data stream signal and the SD control signal of the optical module.

Description

Technical Field

[0001] This invention relates to the field of optical fiber network communication technology, and more specifically, to an XGS-PON uplink data stream signal testing device, system, and method. Background Technology

[0002] Currently, there is no unified standard for the XGS-PON optical modules used in XGS-PON OLT equipment. Differences in driver chips used by different module manufacturers result in varying module parameters. Often, an XGS-PON OLT device can only be compatible with one XGS-PON optical module manufacturer. For high-speed signals like XGS-PON, these module parameters can lead to incompatibility between the signal emitted by the XGS-PON OLT and the module's own parameters, causing problems such as incorrect packet registration, packet loss, and stream interruption, severely impacting user experience. Summary of the Invention

[0003] To address the incompatibility between the signal emitted by the XGS-PON OLT and the XGS-PON optical module in the prior art, this invention provides an XGS-PON uplink data stream signal testing device, system, and method, which adjusts the signal emitted by the XGS-PON OLT to adapt to the parameters of different optical module manufacturers.

[0004] To achieve the above-mentioned objectives of this invention, the technical solution adopted is as follows:

[0005] An XGS-PON uplink data stream signal testing device is used for fiber optic connection between an XGS-PON ONU and an XGS-PON OLT device; the device includes: a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope.

[0006] The main fiber port of the 1-to-2 fiber optic splitter is used to connect to the XGS-PON ONU fiber optic cable and receive the uplink data stream signal from the XGS-PONONU.

[0007] One fiber optic port of the 1-to-2 fiber optic splitter is used to connect to the optical module fiber of the XGS-PON OLT device so that the uplink data stream signal of the XGS-PON ONU can be transmitted to the XGS-PON OLT device for registration operation.

[0008] The other fiber port of the 1-to-2 fiber splitter is connected to the input fiber of the wavelength division multiplexing (WDM) device so that the uplink data stream signal of the XGS-PON ONU can be simultaneously transmitted to the WDM device, and the WDM device performs stripping processing on the uplink data stream signal.

[0009] The output end of the wavelength division multiplexing device is connected to the input end of the adjustable optical power attenuator via optical fiber. The adjustable optical power attenuator adjusts the optical power of the optical signal so that the output optical power meets the preset conditions.

[0010] The output of the adjustable optical power attenuator is optically connected to the input of the signal converter, which converts the received optical signal into an electrical signal.

[0011] The first input terminal of the oscilloscope is electrically connected to the output terminal of the signal converter, and the second input terminal of the oscilloscope is externally connected to the optical module of the XGS-PON OLT to receive the SD control signal of the optical module of the XGS-PON OLT.

[0012] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0013] Preferably, the wavelength division multiplexing (WDM) device includes a first WDM and a second WDM;

[0014] The input end of the first wavelength division multiplexer is connected to the fiber optic port of the other fiber optic port of the 1-to-2 fiber optic splitter, which is used to perform a stripping process on the uplink data stream signal.

[0015] The input of the second wavelength division multiplexer is optically connected to the output of the first wavelength division multiplexer, and is used to perform secondary stripping processing on the uplink data stream signal;

[0016] The output of the second wavelength division multiplexing (WDM) unit is connected to the optical fiber at the input of the adjustable optical power attenuator.

[0017] Furthermore, the first and second wavelength division multiplexing (WDM) units are 1577nm / 1270nm and 1490nm / 1310nm WDM units, respectively.

[0018] Preferably, the signal converter includes an optical signal receiver and an electrical signal converter;

[0019] The input end of the optical signal receiver is optically connected to the output end of the adjustable optical power attenuator, and the optical signal receiver converts the received optical signal into an electrical signal.

[0020] The output terminal of the optical signal receiver is electrically connected to the input terminal of the electrical signal converter, which converts the electrical signal into an SMA electrical signal.

[0021] The output terminal of the electrical signal converter is electrically connected to the first input terminal of the oscilloscope.

[0022] Preferably, the output optical power meets the preset condition that the output optical power is below -20dBm.

[0023] An XGS-PON uplink data stream signal testing system includes the XGS-PON uplink data stream signal testing equipment, an XGS-PON ONU, and an XGS-PON OLT device;

[0024] The main fiber port of the 1-to-2 fiber optic splitter is connected to the XGS-PON ONU fiber optic cable to receive the uplink data stream signal from the XGS-PON ONU.

[0025] One fiber optic port of the 1-to-2 fiber optic splitter is connected to the optical module fiber of the XGS-PON OLT device so that the uplink data stream signal of the XGS-PON ONU can be transmitted to the XGS-PON OLT device for registration.

[0026] The other fiber port of the 1-to-2 fiber splitter is connected to the input fiber of the wavelength division multiplexing (WDM) device so that the uplink data stream signal of the XGS-PON ONU can be simultaneously transmitted to the WDM device, and the WDM device performs stripping processing on the uplink data stream signal.

[0027] The output end of the wavelength division multiplexing device is connected to the input end of the adjustable optical power attenuator via optical fiber. The adjustable optical power attenuator adjusts the optical power of the optical signal so that the output optical power meets the preset conditions.

[0028] The output of the adjustable optical power attenuator is optically connected to the input of the signal converter, which converts the received optical signal into an electrical signal.

[0029] The first input terminal of the oscilloscope is electrically connected to the output terminal of the signal converter, and the second input terminal of the oscilloscope is externally connected to the optical module of the XGS-PON OLT to receive the SD control signal of the optical module of the XGS-PON OLT.

[0030] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0031] Preferably, the wavelength division multiplexing (WDM) device includes a first WDM and a second WDM;

[0032] The input end of the first wavelength division multiplexer is connected to the fiber optic port of the other fiber optic port of the 1-to-2 fiber optic splitter, which is used to perform a stripping process on the uplink data stream signal.

[0033] The input of the second wavelength division multiplexer is optically connected to the output of the first wavelength division multiplexer, and is used to perform secondary stripping processing on the uplink data stream signal;

[0034] The output of the second wavelength division multiplexing (WDM) unit is connected to the optical fiber at the input of the adjustable optical power attenuator.

[0035] Preferably, the signal converter includes an optical signal receiver and an electrical signal converter;

[0036] The input end of the optical signal receiver is optically connected to the output end of the adjustable optical power attenuator, and the optical signal receiver converts the received optical signal into an electrical signal.

[0037] The output terminal of the optical signal receiver is electrically connected to the input terminal of the electrical signal converter, which converts the electrical signal into an SMA electrical signal.

[0038] The output terminal of the electrical signal converter is electrically connected to the first input terminal of the oscilloscope.

[0039] Furthermore, the output optical power meets the preset condition that the output optical power is below -20dBm.

[0040] A method for testing XGS-PON uplink data stream signals, using the aforementioned XGS-PON uplink data stream signal testing system, includes the following steps:

[0041] The XGS-PON ONU transmits its uplink data stream signal to the XGS-PON OLT device for registration via a 1-to-2 fiber optic splitter.

[0042] Meanwhile, the XGS-PON ONU transmits its uplink data stream signal to the wavelength division multiplexing (WDM) device for stripping processing via a 1-to-2 fiber optic splitter.

[0043] The stripped uplink data stream signal is passed through an adjustable optical power attenuator to adjust the optical power so that the output optical power meets the preset conditions.

[0044] The optical signal with adjusted optical power is converted into an electrical signal by a signal converter.

[0045] Simultaneously, the electrical signal and the SD control signal of the XGS-PON OLT optical module are input to the oscilloscope;

[0046] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0047] The beneficial effects of this invention are as follows:

[0048] This invention combines a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope. Using the oscilloscope, the positional relationship between the uplink data stream signal of the XGS-PON ONU and the SD control signal of the optical module is measured. Based on this positional relationship, the time interval for each signal is determined. The signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to parameters from different module manufacturers. This reduces the dependence of the XGS-PON OLT equipment on module manufacturers, significantly lowers the testing threshold for XGS-PON technology, saves on the cost of using XGS-PON, and is more conducive to market competition and the national promotion and application of XGS-PON technology. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the XGS-PON uplink data stream signal testing device of the present invention.

[0050] Figure 2 This is a specific connection block diagram of an XGS-PON uplink data stream signal testing device according to the present invention.

[0051] Figure 3 This is the uplink signal diagram of the XGS-PON ONU. Detailed Implementation

[0052] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0053] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0054] Example 1

[0055] Currently, because there is no unified industry standard for XGS-PON optical modules, XGS-PON OLTs need to be configured to adapt to optical modules from different manufacturers. However, testing the uplink data stream of XGS-PON ONUs is difficult and costly, so often an XGS-PON OLT is only used to adapt to optical modules from one manufacturer.

[0056] To address this issue, this invention provides an XGS-PON uplink data stream signal testing device. Assuming that one XGS-PON OLT device has one XGS-PON ONU registered under one PON port, n XGS-PON ONUs can actually be registered. The wiring method is slightly different, and this explanation uses a single ONU as an example.

[0057] like Figure 1 As shown, the XGS-PON uplink data stream signal testing equipment is used for fiber optic connection between the XGS-PON ONU and the XGS-PONOLT equipment; the equipment includes: a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope.

[0058] The main fiber port of the 1-to-2 fiber optic splitter is used to connect to the XGS-PON ONU fiber optic cable and receive the uplink data stream signal from the XGS-PONONU.

[0059] It should be noted that the traditional connection method is to connect the main fiber of the 1-to-2 fiber optic splitter to the XGS-PON OLT device, while the present invention connects the main fiber of the 1-to-2 fiber optic splitter to the XGS-PON ONU fiber optic cable.

[0060] One fiber optic port of the 1-to-2 fiber optic splitter is used to connect to the optical module fiber of the XGS-PON OLT device, so that the uplink data stream signal of the XGS-PON ONU can be transmitted to the XGS-PON OLT device for registration.

[0061] It should be noted that, under normal use, one of the optical fibers of the 1-to-2 fiber optic splitter is connected to the XGS-PON ONU device. However, in this invention, one of the optical fiber ports of the 1-to-2 fiber optic splitter is connected to the optical module fiber of the XGS-PON OLT device.

[0062] The other fiber port of the 1-to-2 fiber splitter is connected to the input fiber of the wavelength division multiplexing (WDM) device, so that the uplink data stream signal of the XGS-PON ONU is simultaneously transmitted to the WDM device. The WDM device performs stripping processing on the uplink data stream signal. This invention filters out the downlink data stream signal of the XGS-PON OLT device through stripping processing, leaving only the 1270nm uplink data stream signal of the XGS-PON ONU. At this point, the uplink data stream signal is transmitted in the form of optical signals.

[0063] The output end of the wavelength division multiplexing device is connected to the input end of the adjustable optical power attenuator via optical fiber. The adjustable optical power attenuator adjusts the optical power of the optical signal so that the output optical power meets the preset conditions.

[0064] The output of the adjustable optical power attenuator is optically connected to the input of the signal converter, which converts the received optical signal into an electrical signal.

[0065] The first input terminal of the oscilloscope is electrically connected to the output terminal of the signal converter, and the second input terminal of the oscilloscope is externally connected to the optical module of the XGS-PON OLT to receive the SD control signal of the optical module of the XGS-PON OLT.

[0066] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0067] The testing method implemented based on the aforementioned XGS-PON uplink data stream signal testing equipment includes the following steps:

[0068] The XGS-PON ONU transmits its uplink data stream signal to the XGS-PON OLT device for registration via a 1-to-2 fiber optic splitter.

[0069] Meanwhile, the XGS-PON ONU transmits its uplink data stream signal to the wavelength division multiplexing (WDM) device for stripping processing via a 1-to-2 fiber optic splitter.

[0070] The stripped uplink data stream signal is passed through an adjustable optical power attenuator to adjust the optical power so that the output optical power meets the preset conditions.

[0071] The optical signal with adjusted optical power is converted into an electrical signal by a signal converter.

[0072] Simultaneously, the electrical signal and the SD control signal of the XGS-PON OLT optical module are input to the oscilloscope;

[0073] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0074] This invention combines a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope. Using the oscilloscope, the positional relationship between the uplink data stream signal of the XGS-PON ONU and the SD control signal of the optical module is measured. This allows for adjustment of the signals emitted by the XGS-PON OLT to adapt to parameters from different module manufacturers. This reduces the dependence of the XGS-PON OLT on module manufacturers, significantly lowers the testing threshold for XGS-PON technology, saves on the cost of using XGS-PON, and is more conducive to market competition and the national promotion and application of XGS-PON technology.

[0075] In a specific embodiment, such as Figure 2 As shown, the wavelength division multiplexing (WDM) device includes a first WDM and a second WDM;

[0076] The input of the first wavelength division multiplexing (WDM) is connected to the fiber optic port of the other fiber optic branch of the 1-to-2 fiber optic splitter, and is used to perform a stripping process on the uplink data stream signal; the first WDM preferably uses a 1577nm / 1270nm WDM.

[0077] The input of the second wavelength division multiplexing (WDM) is optically connected to the output of the first WDM, and is used to perform secondary stripping processing on the uplink data stream signal; the second WDM is preferably a 1490nm / 1310nm WDM.

[0078] The output of the second wavelength division multiplexing (WDM) unit is connected to the optical fiber at the input of the adjustable optical power attenuator.

[0079] Specifically, one of the splitting fibers of the 1-to-2 fiber splitter described in this embodiment is connected to the COM end of the 1577nm / 1270nm wavelength division multiplexing (WDM) unit, so that the uplink data stream signal of the XGS-PON ONU can reach the WDM unit simultaneously. The 1577nm / 1270nm WDM unit can strip the uplink data stream signal of the XGS-PON ONU and filter out the downlink data stream signal of the XGS-PONOLT device.

[0080] Connect the 1270nm output of the 1577nm / 1270nm wavelength division multiplexing (WDM) to the COM terminal of the 1490nm / 1310nm WDM to filter out the downlink data stream signal of the XGS-PON OLT device carried in the uplink data stream signal of the XGS-PON ONU that was first stripped out, so that only the uplink data stream signal of the XGS-PON ONU at 1270nm remains.

[0081] In this example, the output optical power meets the preset condition of being below -20 dBm. Specifically, the 1310 nm output of the 1490 nm / 1310 nm wavelength division multiplexing (WDM) is connected to the optical signal receiver via an adjustable optical power attenuator. The adjustable optical power attenuator is adjusted to ensure that the output optical power is below -20 dBm.

[0082] In a specific embodiment, such as Figure 2 As shown, the signal converter includes an optical signal receiver and an electrical signal converter;

[0083] The input end of the optical signal receiver is optically connected to the output end of the adjustable optical power attenuator, and the optical signal receiver converts the received optical signal into an electrical signal.

[0084] The output terminal of the optical signal receiver is electrically connected to the input terminal of the electrical signal converter, which converts the electrical signal into an SMA electrical signal.

[0085] The output terminal of the electrical signal converter is electrically connected to the first input terminal of the oscilloscope.

[0086] like Figure 3 The figure shows the relative positions of the uplink data stream signal of the XGS-PON ONU and the control signal of the XGS-PON OLT optical module, as measured by measurement.

[0087] In this embodiment, a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope are combined accordingly. The oscilloscope is used to measure the positional relationship between the uplink data stream signal of the XGS-PON ONU and the SD control signal of the optical module, thereby adjusting the signal emitted by the XGS-PON OLT to adapt to the parameters of different module manufacturers.

[0088] Specifically, the positional relationship is measured using an oscilloscope. The uplink data signal and all control signals are connected to the oscilloscope's interface. Since all signals are independent, the oscilloscope dynamically displays all signals. By setting a trigger signal—the reset signal—(meaning the oscilloscope is triggered when the reset signal changes, simultaneously displaying all connected signals), all signals can be displayed in the same time domain, allowing the positional relationship of each signal to be observed. Furthermore, using the oscilloscope's scale function, the time interval of each signal can be measured, for example... Figure 3 The diagram shows the relationship between the position numbers of a set of signals that were captured. It can be seen that the reset control signal is to the left of the uplink data stream signal, meaning that the reset signal is sent earlier than the uplink data stream signal.

[0089] In this embodiment, the signal emitted by the XGS-PON OLT is adapted to the parameters of different module manufacturers. As seen from the above steps, the reset signal is emitted earlier than the uplink data stream, assuming an advance of 50ns. By inputting a corresponding control command to the XGS-PON OLT, the timing of the reset signal can be adjusted, for example, delaying the reset signal by 20ns (or advancing it). At this point, the oscilloscope will capture the signal position: the reset signal will still be to the left of the uplink data signal, but the time interval will change from 50ns to 50-20=30ns (if advanced, it would be 50+20=70ns). Similarly, the SD signal is adjusted in the same way, and so on, ultimately adjusting the appropriate value according to the actual situation.

[0090] In the existing technology, each manufacturer's different solutions for XGS modules have their own most suitable signal parameters (for example, some resets need to be set much earlier, while others need to be set within the uplink data, etc.). If the module is not compatible, problems such as signal drift, insufficient signal recovery time, and abnormal eye diagrams may occur, resulting in failure to register the ONU or ONU packet loss.

[0091] Example 2

[0092] This invention also provides an XGS-PON uplink data stream signal testing system, such as... Figure 1 , 2 As shown, it includes the XGS-PON uplink data stream signal testing equipment, XGS-PON ONU, and XGS-PON OLT equipment;

[0093] The main fiber port of the 1-to-2 fiber optic splitter is connected to the XGS-PON ONU fiber optic cable to receive the uplink data stream signal from the XGS-PON ONU.

[0094] One fiber optic port of the 1-to-2 fiber optic splitter is connected to the optical module fiber of the XGS-PON OLT device so that the uplink data stream signal of the XGS-PON ONU can be transmitted to the XGS-PON OLT device for registration.

[0095] The other fiber port of the 1-to-2 fiber splitter is connected to the input fiber of the wavelength division multiplexing (WDM) device so that the uplink data stream signal of the XGS-PON ONU can be simultaneously transmitted to the WDM device, and the WDM device performs stripping processing on the uplink data stream signal.

[0096] The output end of the wavelength division multiplexing device is connected to the input end of the adjustable optical power attenuator via optical fiber. The adjustable optical power attenuator adjusts the optical power of the optical signal so that the output optical power meets the preset conditions.

[0097] The output of the adjustable optical power attenuator is optically connected to the input of the signal converter, which converts the received optical signal into an electrical signal.

[0098] The first input terminal of the oscilloscope is electrically connected to the output terminal of the signal converter, and the second input terminal of the oscilloscope is externally connected to the optical module of the XGS-PON OLT to receive the SD control signal of the optical module of the XGS-PON OLT.

[0099] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0100] A method for testing XGS-PON uplink data stream signals, using the aforementioned XGS-PON uplink data stream signal testing system, includes the following steps:

[0101] The XGS-PON ONU transmits its uplink data stream signal to the XGS-PON OLT device for registration via a 1-to-2 fiber optic splitter.

[0102] Meanwhile, the XGS-PON ONU transmits its uplink data stream signal to the wavelength division multiplexing (WDM) device for stripping processing via a 1-to-2 fiber optic splitter.

[0103] The stripped uplink data stream signal is passed through an adjustable optical power attenuator to adjust the optical power so that the output optical power meets the preset conditions.

[0104] The optical signal with adjusted optical power is converted into an electrical signal by a signal converter.

[0105] Simultaneously, the electrical signal and the SD control signal of the XGS-PON OLT optical module are input to the oscilloscope;

[0106] When registering the XGS-PON ONU with the XGS-PON OLT, the positional relationship between the XGS-PON ONU's uplink data stream signal and the optical module's SD control signal is measured using an oscilloscope. Based on the positional relationship, the time interval for each signal is determined, and the signals emitted by the XGS-PON OLT are adjusted according to the time intervals to adapt to the parameters of different module manufacturers.

[0107] Preferably, the wavelength division multiplexing (WDM) device includes a first WDM and a second WDM;

[0108] The input end of the first wavelength division multiplexer is connected to the fiber optic port of the other fiber optic port of the 1-to-2 fiber optic splitter, which is used to perform a stripping process on the uplink data stream signal.

[0109] The input of the second wavelength division multiplexer is optically connected to the output of the first wavelength division multiplexer, and is used to perform secondary stripping processing on the uplink data stream signal;

[0110] The output of the second wavelength division multiplexing (WDM) unit is connected to the optical fiber at the input of the adjustable optical power attenuator.

[0111] Preferably, the signal converter includes an optical signal receiver and an electrical signal converter;

[0112] The input end of the optical signal receiver is optically connected to the output end of the adjustable optical power attenuator, and the optical signal receiver converts the received optical signal into an electrical signal.

[0113] The output terminal of the optical signal receiver is electrically connected to the input terminal of the electrical signal converter, which converts the electrical signal into an SMA electrical signal.

[0114] The output terminal of the electrical signal converter is electrically connected to the first input terminal of the oscilloscope.

[0115] Furthermore, the output optical power meets the preset condition that the output optical power is below -20dBm.

[0116] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. An XGS-PON uplink data stream signal testing device, used for fiber optic connection between an XGS-PON ONU and an XGS-PON OLT device; characterized in that: The equipment includes: a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope; The main fiber port of the 1-to-2 fiber optic splitter is used to connect to the XGS-PON ONU fiber optic cable and receive the uplink data stream signal from the XGS-PON ONU. One fiber optic port of the 1-to-2 fiber optic splitter is used to connect to the optical module fiber of the XGS-PON OLT device so that the uplink data stream signal of the XGS-PON ONU can be transmitted to the XGS-PON OLT device for registration operation. The other fiber port of the 1-to-2 fiber splitter is connected to the input fiber of the wavelength division multiplexing (WDM) device so that the uplink data stream signal of the XGS-PONONU can be simultaneously transmitted to the WDM device, and the WDM device performs stripping processing on the uplink data stream signal. The output end of the wavelength division multiplexing device is connected to the input end of the adjustable optical power attenuator via optical fiber. The adjustable optical power attenuator adjusts the optical power of the optical signal so that the output optical power meets the preset conditions. The output of the adjustable optical power attenuator is optically connected to the input of the signal converter, which converts the received optical signal into an electrical signal. The first input terminal of the oscilloscope is electrically connected to the output terminal of the signal converter, and the second input terminal of the oscilloscope is externally connected to the XGS-PON OLT optical module to receive the XGS-PON OLT optical module SD control signal. When registering the XGS-PON ONU with the XGS-PON OLT device, the positional relationship between the uplink data stream signal of the XGS-PON ONU and the SD control signal of the optical module is measured using an oscilloscope. The time interval of each signal is determined based on the positional relationship, and the signals emitted by the XGS-PON OLT are adjusted according to the time interval to adapt to the parameters of different module manufacturers.

2. The XGS-PON uplink data stream signal testing equipment according to claim 1, characterized in that: The wavelength division multiplexing device includes a first wavelength division multiplexer and a second wavelength division multiplexer; The input end of the first wavelength division multiplexer is connected to the fiber optic port of the other fiber optic port of the 1-to-2 fiber optic splitter, which is used to perform a stripping process on the uplink data stream signal. The input of the second wavelength division multiplexer is optically connected to the output of the first wavelength division multiplexer, and is used to perform secondary stripping processing on the uplink data stream signal; The output of the second wavelength division multiplexing (WDM) unit is connected to the optical fiber at the input of the adjustable optical power attenuator.

3. The XGS-PON uplink data stream signal testing equipment according to claim 2, characterized in that: The first and second wavelength division multiplexing (WDM) units are 1577nm / 1270nm and 1490nm / 1310nm WDM units, respectively.

4. The XGS-PON uplink data stream signal testing equipment according to claim 1, characterized in that: The signal converter includes an optical signal receiver and an electrical signal converter; The input end of the optical signal receiver is optically connected to the output end of the adjustable optical power attenuator, and the optical signal receiver converts the received optical signal into an electrical signal. The output terminal of the optical signal receiver is electrically connected to the input terminal of the electrical signal converter, which converts the electrical signal into an SMA electrical signal. The output terminal of the electrical signal converter is electrically connected to the first input terminal of the oscilloscope.

5. The XGS-PON uplink data stream signal testing equipment according to claim 1, characterized in that: The output optical power meets the preset condition that the output optical power is below -20dBm.

6. A test system for XGS-PON uplink data stream signals, characterized in that: Includes the XGS-PON uplink data stream signal testing equipment, XGS-PON ONU, and XGS-PON OLT equipment as described in any one of claims 1 to 5; The main fiber port of the 1-to-2 fiber optic splitter is connected to the XGS-PON ONU fiber optic cable to receive the uplink data stream signal from the XGS-PON ONU. One fiber optic port of the 1-to-2 fiber optic splitter is connected to the optical module fiber of the XGS-PON OLT device so that the uplink data stream signal of the XGS-PON ONU can be transmitted to the XGS-PON OLT device for registration. The other fiber port of the 1-to-2 fiber splitter is connected to the input fiber of the wavelength division multiplexing (WDM) device so that the uplink data stream signal of the XGS-PONONU can be simultaneously transmitted to the WDM device, and the WDM device performs stripping processing on the uplink data stream signal. The output end of the wavelength division multiplexing device is connected to the input end of the adjustable optical power attenuator via optical fiber. The adjustable optical power attenuator adjusts the optical power of the optical signal so that the output optical power meets the preset conditions. The output of the adjustable optical power attenuator is optically connected to the input of the signal converter, which converts the received optical signal into an electrical signal. The first input terminal of the oscilloscope is electrically connected to the output terminal of the signal converter, and the second input terminal of the oscilloscope is externally connected to the XGS-PON OLT optical module to receive the XGS-PON OLT optical module SD control signal. When registering the XGS-PON ONU with the XGS-PON OLT device, the positional relationship between the uplink data stream signal of the XGS-PON ONU and the SD control signal of the optical module is measured using an oscilloscope. The time interval of each signal is determined based on the positional relationship, and the signals emitted by the XGS-PON OLT are adjusted according to the time interval to adapt to the parameters of different module manufacturers.

7. The XGS-PON uplink data stream signal testing system according to claim 6, characterized in that: The wavelength division multiplexing device includes a first wavelength division multiplexer and a second wavelength division multiplexer; The input end of the first wavelength division multiplexer is connected to the fiber optic port of the other fiber optic port of the 1-to-2 fiber optic splitter, which is used to perform a stripping process on the uplink data stream signal. The input of the second wavelength division multiplexer is optically connected to the output of the first wavelength division multiplexer, and is used to perform secondary stripping processing on the uplink data stream signal; The output of the second wavelength division multiplexing (WDM) unit is connected to the optical fiber at the input of the adjustable optical power attenuator.

8. The XGS-PON uplink data stream signal testing system according to claim 7, characterized in that: The signal converter includes an optical signal receiver and an electrical signal converter; The input end of the optical signal receiver is optically connected to the output end of the adjustable optical power attenuator, and the optical signal receiver converts the received optical signal into an electrical signal. The output terminal of the optical signal receiver is electrically connected to the input terminal of the electrical signal converter, which converts the electrical signal into an SMA electrical signal. The output terminal of the electrical signal converter is electrically connected to the first input terminal of the oscilloscope.

9. The XGS-PON uplink data stream signal testing system according to claim 7, characterized in that: The output optical power meets the preset condition that the output optical power is below -20dBm.

10. A method for testing XGS-PON uplink data stream signals, using the XGS-PON uplink data stream signal testing system as described in any one of claims 6 to 9, characterized in that: The method includes the following steps: The XGS-PON ONU transmits its uplink data stream signal to the XGS-PONOLT device for registration via a 1-to-2 fiber optic splitter. Meanwhile, the XGS-PON ONU transmits its uplink data stream signal to the wavelength division multiplexing (WDM) device for stripping processing via a 1-to-2 fiber optic splitter. The stripped uplink data stream signal is passed through an adjustable optical power attenuator to adjust the optical power so that the output optical power meets the preset conditions. The optical signal with adjusted optical power is converted into an electrical signal by a signal converter. Simultaneously, the electrical signals and the SD control signals of the XGS-PON OLT's optical module are input to the oscilloscope; When registering the XGS-PON ONU with the XGS-PON OLT device, the positional relationship between the uplink data stream signal of the XGS-PON ONU and the SD control signal of the optical module is measured using an oscilloscope. The time interval of each signal is determined based on the positional relationship, and the signals emitted by the XGS-PON OLT are adjusted according to the time interval to adapt to the parameters of different module manufacturers.

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