Multifunctional optical device performance test system

Abstract

The utility model discloses a multifunctional optical device performance test system, which comprises an optical module test board, a bit error tester, a wave separator, a wave combiner, an optical attenuator, an optical selection switch and at least one photoelectric test instrument, wherein the bit error tester is connected with the optical module test board; the input end of the optical module test board is connected with an upper computer and an optical device to be tested, and an output signal is connected with the optical selection switch through the wave separator; the output end of the optical selection switch is connected with an optical attenuator and a plurality of photoelectric test instruments; an output signal of the optical attenuator is connected with the optical module test board through the combiner. According to the utility model, test channels can be automatically switched when different performance tests are carried out on a to-be-tested optical device, so that the timeliness and accuracy of the tests are improved; and the sensitivity or crosstalk test can be carried out on the to-be-tested optical device, so that the test efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical device testing technical field, especially a kind of multifunctional optical device performance test system. BACKGROUND

[0002] In today's optical communication field, most of the optical devices on the market use wavelength division multiplexing technology (WDM). The principle of this technology is that in an optical fiber, by tuning the wavelengths of different optical signals, different wavelengths carry different information, so as to realize the simultaneous transmission of multiple information, greatly improving the transmission capacity and efficiency of optical fiber. When testing the performance of such optical devices using wavelength division multiplexing technology, wavelength channels need to be switched during testing because multiple wavelength channels are involved.

[0003] As shown in the conventional optical device test system shown in Figure 1 During testing, the test personnel can only perform single function testing. After setting the software parameters of the host computer, the test personnel need to manually switch stations to obtain different performance test results, such as switching to a handheld optical power meter, an oscilloscope, a spectrometer, or a single-channel optical attenuator. Therefore, the operation is cumbersome and the testing efficiency is low. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of multifunctional optical device performance test system to improve the technical problems of inconvenient operation and low efficiency caused by manual switching station in the performance test of existing optical device.

[0005] To achieve the above utility model purposes, the utility model embodiment provides the following technical solutions:

[0006] A kind of multifunctional optical device performance test system, including optical module test board, error code instrument, wave divider, wave combiner, optical attenuator, optical selection switch and at least one photoelectric test instrument;Wherein:

[0007] The error code instrument and optical module test board are connected to each other;

[0008] The input end of the optical module test board is connected to the host computer and the optical device to be tested, and the output signal is connected to the wave divider and the optical selection switch;

[0009] The output end of the optical selection switch is connected to the optical attenuator and at least one photoelectric test instrument;

[0010] The output signal of the optical attenuator is transmitted to the optical module test board through the wave combiner.

[0011] Specifically, the error code instrument is connected with a sending end of the optical module test board, and the optical module test board is connected with a receiving end of the error code instrument.

[0012] Specifically, the optoelectronic test instrument comprises one or more of a multi-channel optical power meter, an oscilloscope and a spectrometer; the optical power meter is used for optical power testing of the to-be-tested optical device; the oscilloscope is used for eye diagram testing of the to-be-tested optical device; and the spectrometer is used for optical spectrum testing of the to-be-tested optical device.

[0013] Through the system, the eye diagram testing, the optical power testing and the optical spectrum testing of the to-be-tested optical device can be realized through switching of the optical selection switch.

[0014] Further, the system further comprises a reference light source test board and a reference light source module, the input end of the reference light source test board is connected with the reference light source module, and the output end is connected with the splitter; the optical module test board is connected with the receiving end of the error code instrument; and the sending end of the error code instrument is connected with the reference light source test board.

[0015] Through the system, the sensitivity testing of the to-be-tested optical device can be realized.

[0016] Further, the system further comprises a reference light source test board, a reference light source module and a crosstalk signal generator, the input end of the reference light source test board is connected with the reference light source module, and the output end is connected with the splitter; the sending end of the error code instrument is connected with the reference light source test board; the sending end of the optical module test board is connected with the error code instrument; and the sending end of the crosstalk signal generator is connected with the optical module test board.

[0017] Through the system, the crosstalk testing of the to-be-tested optical device can be realized through adjustment of the switch of the crosstalk signal generator.

[0018] The utility model discloses a system for testing the performance of optical device, which comprises an optical selection switch, an error code instrument, an optical module test board and a splitter.

[0019] The utility model discloses a system for testing the performance of optical device, which comprises an optical selection switch, an error code instrument, an optical module test board and a splitter. BRIEF DESCRIPTION OF DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a traditional optical device testing system;

[0022] Figure 2 This is a schematic diagram of the structure of a multifunctional optical device performance testing system provided in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a multifunctional optical device performance testing system provided in Embodiment 2 of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a multifunctional optical device performance testing system provided in Embodiment 3 of this utility model. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 2 As shown in the figure, this embodiment provides a multifunctional optical device performance testing system, including an optical module test board, a bit error rate tester, a demultiplexer, a multiplexer, an optical attenuator, an optical selection switch, and at least one optoelectronic testing instrument; wherein, the bit error rate tester is interconnected with the optical module test board; the input terminal of the optical module test board is connected to a host computer and the optical device under test, and the output signal is connected to the optical selection switch through the demultiplexer; the output terminal of the optical selection switch is connected to the optical attenuator and at least one optoelectronic testing instrument; the output signal of the optical attenuator is transmitted to the optical module test board through the multiplexer, and the optical attenuator can be a multi-channel optical attenuator.

[0028] In some embodiments, the host computer and the output end of the optical device to be tested are both connected with the input end of the optical module test board, and the parameters required by the optical device to be tested can be set through the host computer, such as frequency, amplitude, etc. At the same time, the communication module is included in the host computer, and the test results of the optoelectronic test instrument can be obtained through the communication module, including optical power, eye diagram, spectrum, etc. The optical device to be tested can be a TOSA (Transmitter Optical Subassembly) device, which is a kind of optical transmitter subassembly, mainly used for converting electrical signal into optical signal (E / O conversion).

[0029] Specifically, the error code instrument is connected with the sending end TX of the optical module test board, and the optical module test board is connected with the receiving end RX of the error code instrument.

[0030] Specifically, the optoelectronic test instrument includes one or more of a multi-channel optical power meter, an oscilloscope, and a spectrum analyzer; wherein the optical power meter is used for optical power test of the optical device to be tested; the oscilloscope is used for eye diagram test of the optical device to be tested; and the spectrum analyzer is used for spectrum test of the optical device to be tested.

[0031] Through the above system, the performance test of the eye diagram test, the optical power test or the spectrum test of the optical device to be tested can be realized quickly through the switching of the optical selection switch.

[0032] The process of performing eye diagram test by the multifunctional optical device performance test system of the embodiment is as follows:

[0033] The sending end of the optical device to be tested (such as TOSA) is connected to the optical module test board, and the error code instrument or the modulation signal generator is connected to the sending end TX of the optical module test board, and the modulation signal is added to the sending end of the optical device to be tested. The optical device to be tested is separated into multiple channels by the wave divider and connected to the optical selection switch, and then connected to the oscilloscope by the optical selection switch. At this time, the eye diagram under different channels can be tested, and the multiple channels are in common working state, which meets the actual working condition.

[0034] The process of performing optical power test by the multifunctional optical device performance test system of the embodiment is as follows:

[0035] The sending end of the optical device to be tested (such as TOSA) is connected to the optical module test board, and the error code instrument or the modulation signal generator is connected to the sending end TX of the optical module test board, and the modulation signal is added to the sending end of the optical device to be tested. The optical device to be tested is separated into multiple channels by the wave divider and connected to the optical selection switch, and then connected to the optical attenuator by the optical selection switch. At this time, the optical power under different channels can be tested.

[0036] In some specific cases, due to the presence of link attenuation and insertion loss, the real optical power of each wavelength is directly tested by a handheld optical power meter, the link loss is obtained by subtracting the value measured by the optical attenuator from the real optical power value, and finally the loss is added on the optical attenuator to obtain the real optical power.

[0037] The process of spectral testing by the multifunctional optical device performance testing system of the embodiment is as follows:

[0038] The transmitting end of the to-be-tested optical device (such as a TOSA) is connected to the optical module testing board, and the error code instrument or the modulation signal generator is connected to the transmitting end TX of the optical module testing board; the to-be-tested optical device is separated into multiple channels by the wave splitter and connected to the optical selection switch, and then connected to the optical spectrum analyzer by the optical selection switch; at this time, the spectrum of different channels can be tested, including wavelength, spectral width, peak, etc.

[0039] Embodiment II

[0040] As shown in Figure 3 , the multifunctional optical device performance testing system provided by the embodiment is a further improvement based on the system of embodiment I.

[0041] The multifunctional optical device performance testing system provided by the embodiment further comprises a reference light source testing board and a reference light source module, and the main difference from embodiment I is that the input end of the reference light source testing board is connected to the reference light source module, and the output end is connected to the wave splitter; the optical module testing board is connected to the receiving end RX of the error code instrument; and the transmitting end TX of the error code instrument is connected to the reference light source testing board.

[0042] Through the above-mentioned system, the sensitivity test of the to-be-tested optical device can be realized, and the process of sensitivity test by the system of the embodiment is as follows:

[0043] The transmitting end of a reference light source module is connected to the reference light source testing board, the transmitting end TX of the error code instrument or the modulation signal generator is connected to the reference light source testing board, and at the same time, the reference light source testing board is connected to the optical selection switch through the wave splitter, and then connected to the optical attenuator and at least one photoelectric testing instrument through the optical selection switch; at this time, the optical signal passing through the optical attenuator is combined into an initial optical signal by the wave combiner and returned to the receiving end (ROSA) of the optical module testing board, and finally returned to the receiving end RX of the error code instrument through the optical module testing board. The sensitivity can be obtained by switching the attenuation amount of different wavelength channels by the upper computer.

[0044] Embodiment III

[0045] As shown in Figure 4 , the multifunctional optical device performance testing system provided by the embodiment is a further improvement based on the system of embodiment II.

[0046] The multifunctional optical device performance test system provided by the embodiment further comprises a crosstalk signal generator, and the difference from the second embodiment is that the crosstalk signal generator is connected to the optical module test board.

[0047] Through the system, the crosstalk test of the optical device to be tested can be realized, and the process of the crosstalk test by the system is as follows:

[0048] The transmitting end of the error code instrument is connected to the reference light source test board, the reference light source test board is connected to the optical selection switch through the wave divider, the optical selection switch is connected to the optical attenuator, the optical signal passing through the optical attenuator is combined into an initial optical signal by the combiner and returns to the receiving end of the optical module test board, and finally returns to the error code instrument or the modulation signal generator through the optical module test board, so that the sensitivity can be tested through the matching software of the host computer.

[0049] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A multi-functional optical device performance test system, characterized by, The system comprises an optical module test board, a bit error rate tester, a wave divider, a wave combiner, an optical attenuator, an optical selector switch, and at least one optoelectronic test instrument. The bit error rate tester and the optical module test board are connected to each other. An input end of the optical module test board is connected to an upper computer and a to-be-tested optical device, and an output signal is connected to the wave divider and the optical selector switch. An output end of the optical selector switch is connected to the optical attenuator and the at least one optoelectronic test instrument. An output signal of the optical attenuator is transmitted to the optical module test board through the wave combiner.

2. The multi-functional optical device performance test system of claim 1, wherein, The bit error rate tester is connected to a sending end of the optical module test board, and the optical module test board is connected to a receiving end of the bit error rate tester.

3. The multi-functional optical device performance test system according to claim 1 or 2, characterized in that, The optoelectronic test instrument comprises one or more of a multi-channel optical power meter, an oscilloscope, and a spectrometer.

4. The multi-functional optical device performance test system of claim 1, wherein, The system further comprises a reference light source test board and a reference light source module, an input end of the reference light source test board is connected to the reference light source module, and an output end of the reference light source test board is connected to the wave divider; the optical module test board is connected to a receiving end of the bit error rate tester. A sending end of the bit error rate tester is connected to the reference light source test board.

5. The multi-functional optical device performance test system of claim 1, wherein, The system further comprises a reference light source test board, a reference light source module, and a crosstalk signal generator, an input end of the reference light source test board is connected to the reference light source module, and an output end of the reference light source test board is connected to the wave divider. A sending end of the bit error rate tester is connected to the reference light source test board. A sending end of the optical module test board is connected to the bit error rate tester. A sending end of the crosstalk signal generator is connected to the optical module test board.

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