CN209562555U - A kind of test macro of asymmetric ONU optical module - Google Patents

Abstract

The utility model discloses a kind of test macros of asymmetric ONU optical module, including the first Error Detector, the first wavelength-division multiplex wave multiplexer, the first test board, OLT optical module, the second Error Detector, the second wavelength-division multiplex wave multiplexer, the second test board, ONU optical module, the OLT optical module is set on first test board, the ONU optical module is set on second test board, and first test board and the second test board are set in semi-anechoic chamber；The utility model device is simple and convenient to operate, tested ONU optical module and ancillary equipment are isolated to greatest extent, reduce external radiation interference, substantially increase the efficiency and accuracy of optical module test, the configuration mode is generally applicable to symmetrical/asymmetric ONU optical module radiation emission test, can effectively solve the difficulty of optical module radiation emission test, convenient for discovery reason, conducive to rectification, safe ready.

Description

A kind of test macro of asymmetric ONU optical module

Technical field

The utility model relates to electronic product the field of test technology more particularly to a kind of tests of asymmetric ONU optical module System.

Background technique

Optical module is widely used in communication field, and the correlation that the electromagnetic interference (EMI) emissions transmitting of optical module directly affects complete machine refers to Can mark up to standard.But the radiation emission test of optical module is a difficult point, because optical module can not work independently, if optical mode On block erecting and welding to complete product testing radiation emit, there are many radiation-emitting influence factor of complete machine, with optical module confuse for One is not easy to judge exceeded whether caused by optical module or other factor.Moreover optical module cooperates some complete machine to pass through Test, not can prove that the radiation-emitting of optical module oneself is qualified, because complete machine is divided into metal chassis and cabinet, Individual metal chassis is different from the shield effectiveness of different frequency range electromagnetic interference.So the radiation-emitting of optical module, needs one A relatively simple most simple configuration that can be shown that optical module and work normally, the optical module of especially ONU (optical network unit) need with The optical module of OLT (optical line terminal) docks, and the configuration of uplink and downlink asymmetry ONU optical module is just more typical.

Utility model content

The purpose of this utility model is that in view of the above shortcomings of the prior art, a kind of asymmetric ONU optical module is provided Test macro.

To solve the above problems, technical solution adopted in the utility model is:

A kind of test macro of asymmetric ONU optical module, including the first Error Detector, the first wavelength-division multiplex wave multiplexer, first Test board, OLT optical module, the second Error Detector, the second wavelength-division multiplex wave multiplexer, the second test board, ONU optical module, the OLT light Module is set on first test board, and the ONU optical module is set on second test board, first test board It is set in semi-anechoic chamber with the second test board；

First Error Detector is connect with the first wavelength-division multiplex wave multiplexer and the second wavelength-division multiplex wave multiplexer respectively, institute The first wavelength-division multiplex wave multiplexer is stated to connect with the OLT optical module, second Error Detector respectively with the first wavelength-division multiplex multiplex Device and the connection of the second wavelength-division multiplex wave multiplexer, the second wavelength-division multiplex wave multiplexer are connect with the ONU optical module, the OLT The transmitting terminal of optical module is connect with the receiving end of the ONU optical module by coaxial cable, the receiving end of the OLT optical module with The transmitting terminal of the ONU optical module is connected by coaxial cable.

Further, it is provided with the first standard optical module applicable on first Error Detector, is provided on second Error Detector Second standard optical module applicable, the transmitting terminal of first standard optical module applicable are connect with the first wavelength-division multiplex wave multiplexer, and described The receiving end of one standard optical module applicable is connect with the second wavelength-division multiplex wave multiplexer；The transmitting terminal of second standard optical module applicable with The connection of second wavelength-division multiplex wave multiplexer, the receiving end of second standard optical module applicable and the first wavelength-division multiplex wave multiplexer connect It connects.

It further, further include power supply, the power supply is that first test board and the second test board are powered.

The beneficial effects of adopting the technical scheme are that

The utility model device is simple and convenient to operate, and tested ONU optical module and ancillary equipment are isolated to greatest extent, reduces External radiation interference, substantially increases the efficiency and accuracy of optical module test, which is generally applicable to symmetrical/non-right Claim ONU optical module radiation emission test, can effectively solve the difficulty of optical module radiation emission test, convenient for discovery reason, is conducive to Rectification, safe ready.

Detailed description of the invention

Fig. 1 is the test macro block diagram of the utility model.

Specific embodiment

The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment For illustrating the utility model, but cannot be used to limit the scope of the utility model.

As shown in Figure 1, be a kind of specific embodiment of the utility model, a kind of test system of asymmetric ONU optical module System, including the first Error Detector, the first wavelength-division multiplex wave multiplexer, the first test board, OLT optical module, the second Error Detector, the second wavelength-division It is multiplexed wave multiplexer, the second test board, ONU optical module, the OLT optical module is set on first test board, the ONU light Module is set on second test board, and first test board and the second test board are set in semi-anechoic chamber；

It is provided with the first standard optical module applicable on first Error Detector, the second standard light is provided on second Error Detector Module, the transmitting terminal TX of first standard optical module applicable are connect with the first wavelength-division multiplex wave multiplexer, the first standard light The receiving end RX of module is connect with the second wavelength-division multiplex wave multiplexer；The transmitting terminal TX and second of second standard optical module applicable The connection of wavelength-division multiplex wave multiplexer, the receiving end RX of second standard optical module applicable are connect with the first wavelength-division multiplex wave multiplexer； The first wavelength-division multiplex wave multiplexer is connect with the OLT optical module, the second wavelength-division multiplex wave multiplexer and the ONU optical mode Block connection, the transmitting terminal TX of the OLT optical module is connect with the receiving end RX of the ONU optical module by coaxial cable, described The receiving end RX of OLT optical module is connect with the transmitting terminal TX of the ONU optical module by coaxial cable.

It further, further include power supply, the power supply is that first test board and the second test board are powered.

Need to test the 1310 asymmetric ONU optical modules of wavelength 1.25G/1490 wavelength 2.5G in the present embodiment, we are in spoke It penetrates in transmitting test semi-anechoic chamber used and uses two pieces of identical optical module test boards, as the first test board and second are surveyed Test plate (panel), the first test board load OLT optical module, and the second test board loads ONU optical module, and the first test board and second here is surveyed Test plate (panel) is only simply powered to optical module, while the TX/RX in optical module PIN foot is drawn by SMA high speed coaxial cable. TX, RX coaxial cable interconnection between first test board and the second test board, it is it that two pieces of test boards, which have respective power supply, Power supply.The optical port of two pieces of test boards draws darkroom by optical fiber.Outside darkroom, using two Error Detectors, each 1310 double-fiber of bootstrap loading Optical module and 1490 double-fiber optical modules test the error code in the channel 1310/1.25G and the channel 1490/2.5G respectively, draw from darkroom Two optical fiber 1490 and 1310 wave bands are separated by wavelength-division multiplex wave multiplexer, be connected respectively to 1310 and 1490 double-fiber optical modes On block, debug entire test environment so that two Error Detectors all without error code, show ONU optical module and entire dual link all in It works normally, so that it may enter radiation-emitting RE and test.

Utility model works principle:

As shown in Figure 1, it is uplink and downlink asymmetry ONU optical module that we are to be tested, its feature is exactly using single light Fibre, the optical signal that different wave length is transmitted on same root optical fiber are to OLT optical module uplink by ONU optical module by wavelength-division multiplex 1310 nano wave lengths, transmission rate is 1.25Gbps, and downlink is 1490 nano wave lengths by OLT optical module to ONU optical module, is passed Defeated rate is 2.5Gbps, using diagram test mode, forms two big ring tested on 1310 nano wave length 1.25Gbps respectively Row of channels, the bit error rate of 1490 nano wave length 2.5Gbps down going channels.Corresponding OLT optical module is also asymmetric single fiber wavelength-division It is multiplexed optical module, has standard communication protocol between ONU optical module and OLT optical module.ONU will be matched with OLT and could completely be tested. WDM, wavelength-division multiplex can both work as wave multiplexer, can also work as channel-splitting filter.1310 nano wave length 1.25Gbps data feedback channels, signal It is generated, is issued via the TX optical channel of 1310 nanometers of 1.25Gbps double-fiber symmetrical optical modules, the WDM through the left side by the first Error Detector Wavelength-division multiplex wave multiplexer, becomes single fiber, is that RX electric signal (is surveyed through optical module electro-optic conversion into the RX optical channel of OLT optical module SMA coaxial connector is provided on test plate (panel) to draw TX or RX electric signal), the TX electric signal of the RX electric signal and ONU optical module Connection, then through electro-optic conversion, become 1310 nanometers of 1.25Gbps optical signals, double-fiber is become from single fiber through channel-splitting filter, is entered back into 1310 channels double-fiber optical module RX on the first Error Detector outside darkroom, the first Error Detector is by comparing 1310 nano wave lengths of sending Whether 1.25Gbps signal unanimously just can determine whether entire 1310 nanometer wave with the 1310 nano wave length 1.25Gbps signals received Whether long 1.25Gbps data feedback channel work is normal；

1490 nano wave length 2.5Gbps down going channels, signal are generated by the second Error Detector, via 1490 nanometers of 2.5Gbps The TX optical channel of double-fiber symmetrical optical module issues, and the second wavelength-division multiplex wave multiplexer through the right becomes single fiber, into ONU optical mode Block RX optical channel, is RX coaxial electrical signal through electro-optic conversion, and the TX electric signal drawn on the RX electric signal and OLT optical module connects It connects, then through electro-optic conversion, becomes 1490 nanometers of 2.5Gbps optical signals, double-fiber is become from single fiber through channel-splitting filter, is entered back into darkroom The channel RX of 1490 double-fiber optical modules on the second outer Error Detector, the second Error Detector is by comparing 1490 nano wave lengths issued Whether whether 2.5Gbps signal and the signal received unanimously just can determine whether entire 1490 nano wave length 2.5Gbps channels operation Normally.

The test macro is also applied for the symmetrical ONU optical module of uplink and downlink, and test macro is reduced to single-link, including test board And power supply, Error Detector are all reduced to a set of.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It can still modify to technical solution documented by previous embodiment, or be equal to part of technical characteristic Replacement；And these are modified or replaceed, the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution Spirit and scope.

Claims (3)

1. a kind of test macro of asymmetric ONU optical module, which is characterized in that closed including the first Error Detector, the first wavelength-division multiplex Wave device, the first test board, OLT optical module, the second Error Detector, the second wavelength-division multiplex wave multiplexer, the second test board, ONU optical module, The OLT optical module is set on first test board, and the ONU optical module is set on second test board, described First test board and the second test board are set in semi-anechoic chamber；

First Error Detector is connect with the first wavelength-division multiplex wave multiplexer and the second wavelength-division multiplex wave multiplexer respectively, and described One wavelength-division multiplex wave multiplexer is connect with the OLT optical module, second Error Detector respectively with the first wavelength-division multiplex wave multiplexer and The connection of second wavelength-division multiplex wave multiplexer, the second wavelength-division multiplex wave multiplexer are connect with the ONU optical module, the OLT optical mode The transmitting terminal of block is connect with the receiving end of the ONU optical module by coaxial cable, the receiving end of the OLT optical module with it is described The transmitting terminal of ONU optical module is connected by coaxial cable.

2. a kind of asymmetric ONU optical module test macro according to claim 1, which is characterized in that first error code It is provided with the first standard optical module applicable on instrument, the second standard optical module applicable, the first standard light are provided on second Error Detector The transmitting terminal of module is connect with the first wavelength-division multiplex wave multiplexer, the receiving end of first standard optical module applicable and described second The connection of wavelength-division multiplex wave multiplexer；The transmitting terminal of second standard optical module applicable is connect with the second wavelength-division multiplex wave multiplexer, and described The receiving end of two standard optical module applicables is connect with the first wavelength-division multiplex wave multiplexer.

3. a kind of asymmetric ONU optical module test macro according to claim 1, which is characterized in that it further include power supply, institute Stating power supply is that first test board and the second test board are powered.