CN103731206A - Device for testing communication error rate and sensitivity of light module - Google Patents
Device for testing communication error rate and sensitivity of light module Download PDFInfo
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- CN103731206A CN103731206A CN201310730671.9A CN201310730671A CN103731206A CN 103731206 A CN103731206 A CN 103731206A CN 201310730671 A CN201310730671 A CN 201310730671A CN 103731206 A CN103731206 A CN 103731206A
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Abstract
The invention discloses a device for testing the communication error rate and the sensitivity of a light module. The device is connected with a light receiving and emitting module to be tested and comprises an electric signal driving distribution and selection circuit, an error rate detection circuit, a light receiving and emitting module circuit, a light power detection and attenuation control circuit, a light signal driving distribution and selection circuit and a control circuit. The control circuit respectively controls a channel of electric signals output by the electric signal driving distribution and selection circuit, a channel of light signals output by the light signal driving distribution and selection circuit, the attenuation amount of light signals of the light power detection and attenuation control circuit and the detection error rate and the sensitivity of the error rate detection circuit. According to the device for testing the communication error rate and the sensitivity of the light module, signals transmitted simultaneously by different channels of the multi-channel light module can be tested, the problems that optical fibers need to be plugged and pulled multiple times in the error rate testing process, the sensitivity testing process and the light emitting power testing process of the light module so that the light power can be tested can be avoided, and the test efficiency and the reliability of test results are improved.
Description
Technical field
The present invention relates to optical communication field, relate in particular to the testing apparatus of a kind of optical module communication error rate and sensitivity.
Background technology
Along with the raising of communication system to optical module transmission rate and capacity requirement, high-capacity and high-speed optical module is developed rapidly, wherein four-way can plug (Quad Small Form-factor Pluggable, QSFP), the multichannel light module such as CFP is because cost performance is high, be widely used.Multichannel light module need to be tested the photoelectricity index of each passage simultaneously, in order to carry out multiple channel test simultaneously, need to adopt many cover single channel testing equipments or multi-path-apparatus and light power meter, attenuator, oscilloscope to combine and realize test, the single channel of well-known instrument producer and multiple channel test functions of the equipments are complicated and expensive, the test of multichannel light module mainly contains the error rate, sensitivity, eye pattern etc., wherein Error Detector, oscilloscope cost are higher, but in production test, need repeatedly to use.When test light module sensitivity, need to utilize optical attenuator to adjust the size of input optical power, find and meet the minimum input optical power that the test error rate requires, these test processs all need often to plug optical fiber and are used for testing the luminous power size in this kind of situation, and repeatedly plugging optical fiber can affect test accuracy and testing efficiency.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide the testing apparatus of a kind of optical module communication error rate and sensitivity, can avoid repeatedly plugging optical fiber, improves testing efficiency and test result reliability.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A testing apparatus for the optical module communication error rate and sensitivity, is connected with optical transceiver module to be measured, and it comprises:
The signal of telecommunication drives and distributes and select circuit, and a passage is divided into many passages, and can selector channel output electrical signals, and this signal of telecommunication drives and distributes and select circuit to be connected with this optical transceiver module to be measured;
Error detection circuit, produces and detects the error code signal of telecommunication, and this Error detection circuit drives and distributes and select circuit to be connected with this signal of telecommunication;
Optical transceiver module circuit, for the conversion between light signal and the signal of telecommunication, this optical transceiver module circuit drives and distributes and select circuit to be connected with this signal of telecommunication;
Luminous power detects and attenuation control circuit, and for the detection of luminous power and light signal is decayed, this luminous power detection and attenuation control circuit are connected with this optical transceiver module circuit;
Light signal drives and distributes and select circuit, and a passage is divided into many passages, and can selector channel output optical signal, and this light signal drives and distributes and select circuit to be connected with this luminous power detection and attenuation control circuit and optical transceiver module to be measured respectively;
Control circuit, connect respectively this signal of telecommunication drive distribute and select circuit, light signal to drive to distribute and select circuit, luminous power detection and attenuation control circuit and Error detection circuit, this control circuit control respectively the signal of telecommunication drive the passage, the light signal that distribute and select circuit output electrical signals to drive passage, the luminous power of distributing and select circuit output optical signal to detect and attenuation control circuit in attenuation and the Error detection electric circuit inspection error rate and the sensitivity of light signal.
As preferred version, the described signal of telecommunication drives and distributes and select circuit to comprise:
Electric channel is selected circuit, and this electric channel selects circuit to connect respectively electric output, optical transceiver module circuit and the Error detection circuit of this optical transceiver module to be measured; This electric channel selects circuit to receive the signal of telecommunication of this optical transceiver module output to be measured or the signal of telecommunication of this optical transceiver module circuit output, and under the control of described control circuit selector channel output electrical signals to this Error Detector testing circuit;
The signal of telecommunication drives distributor circuit, and this signal of telecommunication drives distributor circuit to connect respectively electrical input, Error detection circuit and the optical transceiver module circuit of this optical transceiver module to be measured; This signal of telecommunication drives distributor circuit to receive the error code signal of telecommunication of Error detection circuit output, and exports this optical transceiver module to be measured or optical transceiver module circuit to.
As preferred version, the testing apparatus of the described optical module communication error rate and sensitivity also comprises signal of telecommunication input interface and electrical signal output interface, this electric channel is selected to be connected this signal of telecommunication input interface between circuit and the electric output of optical transceiver module to be measured, and this signal of telecommunication drives between distributor circuit and the electrical input of optical transceiver module to be measured and is connected this electrical signal output interface.
As preferred version, described luminous power detects and attenuation control circuit comprises:
Input optical power detects and attenuation control circuit, and this input optical power detects and attenuation control circuit connects respectively this optical transceiver module circuit and control circuit; Under the control of this control circuit, this input optical power detect and attenuation control circuit to attenuated optical signal, and the light signal after decay is inputed to this optical transceiver module circuit;
Output optical power detects and attenuation control circuit, and this Output optical power detects and attenuation control circuit connects respectively this optical transceiver module circuit and control circuit; Under the control of this control circuit, this input optical power detection and attenuation control circuit are by the attenuated optical signal by optical transceiver module circuit transmission receiving.
As preferred version, described light signal drives and distributes and select circuit to comprise:
Optical channel is selected circuit, and this optical channel selects circuit to connect respectively the light output end of this control circuit, input optical power detection and attenuation control circuit, Output optical power detection and attenuation control circuit and optical transceiver module to be measured; This optical channel selects circuit selector channel to receive the light signal of this optical transceiver module input to be measured, and under the control of this control circuit, selector channel output optical signal is to this input optical power detection and attenuation control circuit or Output optical power detection and attenuation control circuit;
Light signal drives distributor circuit, and this light signal drives distributor circuit to connect respectively the light input end of this Output optical power detection and attenuation control circuit and optical transceiver module to be measured; This light signal drive distributor circuit to receive that this Output optical power detects and the decay of attenuation control circuit after light signal, and export this optical transceiver module to be measured to.
As preferred version, the testing apparatus of the described optical module communication error rate and sensitivity also comprises light signal input interface and light signal output interface, this optical channel selects circuit to be connected this light signal input interface with the light output end of optical transceiver module to be measured, and this light signal drives distributor circuit to be connected this light signal output interface with the light input end of optical transceiver module to be measured.
As preferred version, the testing apparatus of the described optical module communication error rate and sensitivity also comprises communication interface, and this control circuit receives control command by described communication interface.
As preferred version, described control circuit is singlechip controller.
The technique effect that the present invention reaches is as follows:
1, the present invention can test the signal that the different passages of multichannel light module transmit simultaneously, avoid needing repeatedly to plug the problem of test optical fiber luminous power in the optical module error rate, sensitivity and luminous power test process, improved testing efficiency and test result reliability.
2, the present invention supports light signal, the signal of telecommunication and photoelectricity hybrid test pattern, has reduced the demand to external instrument.
3, the present invention can disposablely complete the test of the each passage error rate of optical module, sensitivity index, has reduced operating process and has been connected with optical link, is convenient to large-scale production test and controls.
4, thereby the present invention can export to measurement data easily upper terminal by control circuit and analyzes and researches, improved and improve the quality of products and performance, while, can be for the production of automatic test due to the communication interface that can provide receiving PC control command.
Accompanying drawing explanation
Fig. 1 is the construction module figure of the testing apparatus of the optical module communication error rate of the present invention and sensitivity;
Fig. 2 is the concrete structure schematic diagram of the testing apparatus of the optical module communication error rate of the present invention and sensitivity;
Fig. 3 is the electrical block diagram of first embodiment of the invention;
Fig. 4 is the electrical block diagram of second embodiment of the invention;
Fig. 5 is the electrical block diagram of third embodiment of the invention;
Fig. 6 is the electrical block diagram of fourth embodiment of the invention.
[symbol description]
The signal of telecommunication drives and distributes and selection circuit 1
Electric channel is selected circuit 11
The signal of telecommunication drives distributor circuit 12
Optical transceiver module circuit 3
Luminous power detects and attenuator circuit 4
Input optical power detects and attenuator circuit 41
Output optical power detects and attenuator circuit 42
Light signal drives and distributes and selection circuit 5
Optical channel is selected circuit 51
Light signal drives distributor circuit 52
Signal of telecommunication input interface 81
Electrical signal output interface 82
Light signal input interface 91
Light signal output interface 92
Embodiment
As shown in Figure 1, the testing apparatus signal of telecommunication of the optical module communication error rate of the present invention and sensitivity drives distribution and selects circuit 1, Error detection circuit 2, optical transceiver module circuit 3, luminous power detection and attenuation control circuit 4, light signal to drive and distribute and selection circuit 5 and control circuit 6.
Wherein, the signal of telecommunication drives and distributes and select circuit 1 passage can be divided into many passages, and can selector channel output electrical signals, and this signal of telecommunication drives and distributes and select circuit 1 to be connected (as shown in Figure 3) with optical transceiver module 100 to be measured.
Wherein, Error detection circuit conventionally by " pseudo-random binary sequence (Pseudo Random Binary Sequence; PRBS) pattern generator, PRBS code detectors, signal driver amplifier composition, PRBS pattern generator be responsible for producing for the error rate and the required pseudo-random binary sequence signal of sensitivity test and be modulated into modulation signal and driven by signal driver amplifier after output.PRBS code detectors is responsible for detecting the signal receiving and adding up number of bit errors.By software, can control PRBS code detectors and count the statistical system error rate.
PRBS pattern generator, PRBS code detectors can be realized by chips such as the chip SI5040, the VSC8248 that occur with PRBS pattern and detect, under the control of control circuit, can realize easily Error detection Bit Error Ratio Measurement.
Optical transceiver module circuit 3 is for the conversion between light signal and the signal of telecommunication, and this optical transceiver module circuit 3 drives and distributes and select circuit 1 to be connected with this signal of telecommunication.
Luminous power detect and attenuation control circuit 4 for the detection of luminous power and light signal is decayed, this luminous power detects and attenuation control circuit 4 is connected with this optical transceiver module circuit 3.
Light signal drives and distributes and select circuit 5 that a passage is divided into many passages, and can selector channel output optical signal, this light signal drives and distributes and select circuit 5 to detect with this luminous power respectively and attenuation control circuit 4 and optical transceiver module to be measured 100 are connected (as shown in Figure 3).
As shown in Figure 2, the present invention also comprises communication interface 7, signal of telecommunication input interface 81, electrical signal output interface 82, light signal input interface 91 and light signal output interface 92.
The signal of telecommunication drives and distributes and select circuit to comprise that electric channel selection circuit 11 and the signal of telecommunication drive distributor circuit 12.Wherein, this electric channel selects circuit 11 to connect the electric output 102 of this optical transceiver module 100 to be measured by signal of telecommunication input interface 81, and also connects respectively optical transceiver module circuit 3 and Error detection circuit 2.This electric channel selects circuit 11 to receive the signal of telecommunication that the signal of telecommunication that these optical transceiver modules 100 to be measured export or this optical transceiver module circuit 3 are exported, and under the control of described control circuit 6 selector channel output electrical signals to this Error Detector testing circuit 2.This signal of telecommunication drives distributor circuit 12 to connect the electrical input 101 of this optical transceiver module 100 to be measured by electrical signal output interface 82, and also connects respectively Error detection circuit 2 and optical transceiver module circuit 3.This signal of telecommunication drives distributor circuit 12 to receive the error code signal of telecommunication that Error detection circuit 2 is exported, and exports this optical transceiver module 100 to be measured or optical transceiver module circuit 3 to.
Wherein, it is 1xN passage electric switch that electric channel is selected the main devices of circuit 11, can be realized by high frequency mechanical switch, also can be realized by high frequency electronic switch, as chips such as SI5368, under the control of single-chip microcomputer, can select easily the conducting of respective channel.
It is 1:N passage signal of telecommunication buffer chip that the signal of telecommunication drives the main devices of distributor circuit 12, as chips such as HMC987, under the control of single-chip microcomputer, can realize easily 1 point of N multichannel output.
Described luminous power detects and attenuation control circuit 4 comprises that input optical power detects and attenuation control circuit 41 and Output optical power detection and attenuation control circuit 42.This input optical power detects and attenuation control circuit 41 connects respectively this optical transceiver module circuit 3 and control circuit 6.Under the control of this control circuit 6, this input optical power detect and attenuation control circuit 41 to attenuated optical signal, and the light signal after decay is inputed to this optical transceiver module circuit 3.This Output optical power detects and attenuation control circuit 42 connects respectively this optical transceiver module circuit 3 and control circuit 6.Under the control of this control circuit 6, this input optical power detects and attenuation control circuit 42 is decayed the light signal being transmitted by optical transceiver module circuit 3 receiving.
Wherein, input optical power detects and the operation principle of attenuation control circuit 41 and Output optical power detection and attenuation control circuit 42 is: for reducing the impact on main fiber passage, conventionally can adopt the luminous power of fiber coupler decoupling 1% from main fiber passage of 1% to detect for luminous power, by photoelectric device, light signal can be converted into photoelectric current, by linear amplifier MAX4476 etc., realize the linearity of electric current is amplified again, because luminous power exists linear relationship with the photoelectric current of changing out, therefore can converse the luminous power in main fiber passage by the size of current measuring.In main fiber passage, seal in electrical micro-machine optical attenuator, by the attenuation of control circuit 6 control micro electric machine optical attenuators, can modulate easily the output signal strength of main fiber passage.
Described light signal drives and distributes and select circuit 5 to comprise that optical channel selection circuit 51 and light signal drive distributor circuit 52.This optical channel selects circuit 51 to connect respectively the light output end 104 of this control circuit 6, input optical power detection and attenuation control circuit 41, Output optical power detection and attenuation control circuit 42 and optical transceiver module to be measured 100.This optical channel selects circuit 51 to receive by light signal input interface 91 light signal that optical transceiver module 100 to be measured is inputted, and under the control of this control circuit 6, selector channel output optical signal to this input optical power detects and attenuation control circuit 41 or Output optical power detection and attenuation control circuit 42.This light signal drives distributor circuit 52 to connect respectively the light input end 103 of this Output optical power detection and attenuation control circuit 42 and optical transceiver module to be measured 100.This light signal drives distributor circuit 52 to receive the light signal after this Output optical power detection and attenuation control circuit 42 decay, and exports this optical transceiver module 100 to be measured to by light signal output end 92.
Wherein, control circuit 6 connects by communication interface 7 and personal computer (Personal Computer, PC), can receive control command, can be for the production of automatic test.In addition, thus control circuit 6 measurement data can be exported to upper terminal and analyze and research, improved and improve the quality of products and performance.Described control circuit 6 can be singlechip controller.
The modulation code signal of telecommunication of the present invention can support light signal output interface 92, electrical signal output interface 82 to export simultaneously.
In the optical module error rate and sensitivity test, the reception error code after conventionally transmitting in communication line with statistics PRBS code modulation signal is tested.
The PRBS code modulation signal that the present invention produces Error detection circuit 2 is input to the signal of telecommunication and drives distributor circuit 12, and the signal of telecommunication drives distributor circuit 12 that the PRBS code modulation signal free of losses under the control of control circuit 6 receiving is extended to the PRBS code modulation signal output of M road.Wherein, according to design needs, for QSFP multichannel light module testing, M can be decided to be 5 conventionally, and for 100G CFP multichannel light module, M can be decided to be 12 conventionally, but not as limit.
While exporting PRBS code modulation signal for electrical signal output interface 82, the signal of telecommunication drives the multiple signals that distributor circuit 12 is exported directly by electrical signal output interface 82, to export modulation signal to optical transceiver module 100 to be measured.
While exporting PRBS code modulation signal for light signal output interface 92, optical transceiver module circuit 3 receives the modulation signal of signal of telecommunication driving distributor circuit 12, optical transceiver module circuit 3 is modulated into the PRBS code modulation signal receiving after light signal, by Output optical power, detect and attenuation control circuit 42 is exported to light signal and driven distributor circuit 52, light signal drives distributor circuit 52 that the modulated light signal receiving is extended to M road modulated light signal and exports modulated light signal to treating photometry transmitting-receiving receiver module 100 by light signal output interface 92.Output optical power detection and attenuation control circuit 42, under the control of control circuit 6, can be controlled the size of light signal output interface 92 output optical signals.
The present invention supports the error rate and sensitivity test under the output of multichannel light module electricity input-electricity, the output of electricity input-light, the output of light input-electricity, light input-light output isotype.
Be illustrated in figure 3 the electrical block diagram of first embodiment of the invention.In the present embodiment, can realize the error rate and the sensitivity test under optical module electricity input-electric output mode.The input signal of optical transceiver module 100 to be measured is provided by electrical signal output interface 82 of the present invention.
Error detection circuit 2 produces PRBS code modulation signal, after the signal of telecommunication drives distributor circuit 12, exports to electrical signal output interface 82.Photometry transceiver module 100 is input to light signal input interface 91 by the multichannel light signal after modulation by light output end 104, optical channel selects circuit 51 to receive by light signal input interface 91 light signal that optical transceiver module 100 to be measured is exported, optical channel selects circuit 51 under the control of control circuit 6, select the light signal of passage to be measured to export to Output optical power detection and attenuation control circuit 42, Output optical power detects and attenuation control circuit 42 is adjusted light signal and the light signal after adjusting is exported to light signal drives distributor circuit 52, light signal drives distributor circuit 52 to export optical transceiver module 100 to be measured to by light signal output interface 92, for the optical module error rate and sensitivity test.After the light signal of optical transceiver module 100 receiving optical signals output interfaces 92 to be measured, the signal of telecommunication demodulating is exported to signal of telecommunication input interface 81, electric channel selects circuit 11 to receive the signal of signal of telecommunication input interface 81, and export to Error detection circuit 2, error code under Error detection circuit 2 these conditions of statistics, and add up the error rate of this passage and the sensitivity of this passage of analytical calculation by control circuit 6.When the error rate of testing under this input power part, do not need additionally to plug optical fiber, only need to detect and attenuation control circuit 42 by controlling Output optical power, can obtain different input optical powers and be used for the measuring and calculation error rate and sensitivity, by controlling optical channel, select circuit 51 can switch different optical channels to come the error rate and the sensitivity of the different passages of test light module simultaneously.
Be illustrated in figure 4 the electrical block diagram of second embodiment of the invention.In the present embodiment, can realize the error rate and the sensitivity test under optical module electricity input-patterned optical output.The input signal of optical transceiver module 100 to be measured is provided by light signal output interface 92 of the present invention.
PRBS code modulation signal is produced by Error detection circuit 2, after driving distributor circuit 12, the signal of telecommunication exports to optical transceiver module circuit 3, the modulated light signal that optical transceiver module circuit 3 is exported is under the adjustment of Output optical power detection and attenuation control circuit 42, by light signal, drive distributor circuit 52 and 92 outputs of light signal output interface to set big or small modulated light signal optical transceiver module 100 to be measured, for the optical module error rate and sensitivity test.After the light signal of optical transceiver module 100 receiving optical signals output interfaces 92 to be measured, the signal of telecommunication demodulating is exported to signal of telecommunication input interface 81, electric channel selects circuit 11 to receive the signal of signal of telecommunication input interface 81, and selected channel signal to be measured is exported to Error detection circuit 2 under the control of control circuit 6, error code under Error detection circuit 2 these conditions of statistics, and add up the error rate of this passage and the sensitivity of this passage of analytical calculation by control circuit 6.By electric channel, select circuit 11 can switch different electric channels to test the error rate and the sensitivity of the different passages of optical module to be measured simultaneously.
Be illustrated in figure 5 the electrical block diagram of third embodiment of the invention.In the present embodiment, can realize the error rate and the sensitivity test under optical module light input-electric output mode.The input signal of optical transceiver module 100 to be measured is provided by electrical signal output interface 82 of the present invention.
PRBS code modulation signal is produced by Error detection circuit 2, after the signal of telecommunication drives distributor circuit 12, exports to electrical signal output interface 82.Optical transceiver module 100 to be measured is input to light signal input interface 91 by the multichannel light signal after modulation, optical channel selects circuit 51 by light signal input interface 91 receiving optical signals, and under the control of control circuit 6, selecting passage light signal to be measured to export to input optical power detects and attenuation control circuit 41, the luminous power that input optical power detects and attenuation control circuit 41 is adjusted output optical transceiver module circuit 3 is to set point, optical transceiver module circuit 3 selects circuit 11 under the control of control circuit 6, to export to Error detection circuit 2 by electric channel the signal of telecommunication demodulating, error code under Error detection circuit 2 these conditions of statistics, and add up the error rate of this passage and the sensitivity of this passage of analytical calculation by control circuit 6.By optical channel, select circuit 51 can switch different light input channels to test the error rate and the sensitivity of the different passages of optical module to be measured simultaneously.
Be illustrated in figure 6 the electrical block diagram of fourth embodiment of the invention.In the present embodiment, can realize the error rate and the sensitivity test under optical module light input-patterned optical output.Need to, by the demodulation output electrical signals of optical transceiver module 100 to be measured by being connected of electric output 102 and electrical input 101, as its input signal, test.
PRBS code modulation signal is produced by Error detection circuit 2, after driving distributor circuit 12, the signal of telecommunication exports to optical transceiver module circuit 3, the modulated light signal that optical transceiver module circuit 3 is exported is under the adjustment of Output optical power detection and attenuation control circuit 42, by light signal, drive distributor circuit 52 and 92 outputs of light signal output interface to set big or small modulated light signal, as light signal, input to optical transceiver module 100 to be measured, optical transceiver module 100 to be measured is demodulated to the light signal receiving after the signal of telecommunication, using this signal of telecommunication as modulation signal, be input to again the electrical input 101 of self, after being modulated into light signal, output to light signal input interface 91, optical channel is selected the light signal of circuit 51 receiving optical signals input interfaces 91, and under the control of control circuit 6, selecting passage light signal to be measured to export to input optical power detects and attenuation control circuit 41, input optical power detects and attenuation control circuit 41 is adjusted the luminous power of exporting to optical transceiver module circuit 3 to set point, optical transceiver module circuit 3 selects circuit 11 under the control of control circuit 6, to export to Error detection circuit 2 by electric channel the signal of telecommunication demodulating, error code under Error detection circuit 2 these conditions of statistics, and add up the error rate of this passage and the sensitivity of this passage of analytical calculation by control circuit 6.By optical channel, select circuit 51 can switch different light input channels to test the error rate and the sensitivity of the different passages of optical module to be measured simultaneously.
The present invention can carry out the error rate and sensitivity test to multichannel light module easily and effectively, in test process, regulate each passage luminous power not need to plug back and forth optical fiber measurement and confirm input optical power, can disposablely complete the test of the each passage error rate of optical module, sensitivity index, simplified operating process, be convenient to large-scale production test and control.
The present invention, applicable to performance tests such as the communication error rate of various single channels or multichannel light module, sensitivity, also can be used to provide multi channel signals to drive and receives multi channel signals output by light mouth, for multichannel light module electric eye figure, tests.Simultaneously also applicable to the multichannel radio-frequency communication module beyond optical module, the test of device, applied widely.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (8)
1. a testing apparatus for the optical module communication error rate and sensitivity, is connected with optical transceiver module to be measured, it is characterized in that, it comprises:
The signal of telecommunication drives and distributes and select circuit, and a passage is divided into many passages, and can selector channel output electrical signals, and this signal of telecommunication drives and distributes and select circuit to be connected with this optical transceiver module to be measured;
Error detection circuit, produces and detects the error code signal of telecommunication, and this Error detection circuit drives and distributes and select circuit to be connected with this signal of telecommunication;
Optical transceiver module circuit, for the conversion between light signal and the signal of telecommunication, this optical transceiver module circuit drives and distributes and select circuit to be connected with this signal of telecommunication;
Luminous power detects and attenuation control circuit, and for the detection of luminous power and light signal is decayed, this luminous power detection and attenuation control circuit are connected with this optical transceiver module circuit;
Light signal drives and distributes and select circuit, and a passage is divided into many passages, and can selector channel output optical signal, and this light signal drives and distributes and select circuit to be connected with this luminous power detection and attenuation control circuit and optical transceiver module to be measured respectively;
Control circuit, connect respectively this signal of telecommunication drive distribute and select circuit, light signal to drive to distribute and select circuit, luminous power detection and attenuation control circuit and Error detection circuit, this control circuit control respectively the signal of telecommunication drive the passage, the light signal that distribute and select circuit output electrical signals to drive passage, the luminous power of distributing and select circuit output optical signal to detect and attenuation control circuit in attenuation and the Error detection electric circuit inspection error rate and the sensitivity of light signal.
2. the testing apparatus of the optical module communication error rate according to claim 1 and sensitivity, is characterized in that, the described signal of telecommunication drives and distributes and select circuit to comprise:
Electric channel is selected circuit, and this electric channel selects circuit to connect respectively electric output, optical transceiver module circuit and the Error detection circuit of this optical transceiver module to be measured; This electric channel selects circuit to receive the signal of telecommunication of this optical transceiver module output to be measured or the signal of telecommunication of this optical transceiver module circuit output, and under the control of described control circuit selector channel output electrical signals to this Error Detector testing circuit;
The signal of telecommunication drives distributor circuit, and this signal of telecommunication drives distributor circuit to connect respectively electrical input, Error detection circuit and the optical transceiver module circuit of this optical transceiver module to be measured; This signal of telecommunication drives distributor circuit to receive the error code signal of telecommunication of Error detection circuit output, and exports this optical transceiver module to be measured or optical transceiver module circuit to.
3. the testing apparatus of the optical module communication error rate according to claim 2 and sensitivity, it is characterized in that, the testing apparatus of the described optical module communication error rate and sensitivity also comprises signal of telecommunication input interface and electrical signal output interface, this electric channel is selected to be connected this signal of telecommunication input interface between circuit and the electric output of optical transceiver module to be measured, and this signal of telecommunication drives between distributor circuit and the electrical input of optical transceiver module to be measured and is connected this electrical signal output interface.
4. the testing apparatus of the optical module communication error rate according to claim 2 and sensitivity, is characterized in that, described luminous power detects and attenuation control circuit comprises:
Input optical power detects and attenuation control circuit, and this input optical power detects and attenuation control circuit connects respectively this optical transceiver module circuit and control circuit; Under the control of this control circuit, this input optical power detect and attenuation control circuit to attenuated optical signal, and the light signal after decay is inputed to this optical transceiver module circuit;
Output optical power detects and attenuation control circuit, and this Output optical power detects and attenuation control circuit connects respectively this optical transceiver module circuit and control circuit; Under the control of this control circuit, this input optical power detection and attenuation control circuit are by the attenuated optical signal by optical transceiver module circuit transmission receiving.
5. the testing apparatus of the optical module communication error rate according to claim 4 and sensitivity, is characterized in that, described light signal drives and distributes and select circuit to comprise:
Optical channel is selected circuit, and this optical channel selects circuit to connect respectively the light output end of this control circuit, input optical power detection and attenuation control circuit, Output optical power detection and attenuation control circuit and optical transceiver module to be measured; This optical channel selects circuit selector channel to receive the light signal of this optical transceiver module input to be measured, and under the control of this control circuit, selector channel output optical signal is to this input optical power detection and attenuation control circuit or Output optical power detection and attenuation control circuit;
Light signal drives distributor circuit, and this light signal drives distributor circuit to connect respectively the light input end of this Output optical power detection and attenuation control circuit and optical transceiver module to be measured; This light signal drive distributor circuit to receive that this Output optical power detects and the decay of attenuation control circuit after light signal, and export this optical transceiver module to be measured to.
6. the testing apparatus of the optical module communication error rate according to claim 5 and sensitivity, it is characterized in that, the testing apparatus of the described optical module communication error rate and sensitivity also comprises light signal input interface and light signal output interface, this optical channel selects circuit to be connected this light signal input interface with the light output end of optical transceiver module to be measured, and this light signal drives distributor circuit to be connected this light signal output interface with the light input end of optical transceiver module to be measured.
7. the testing apparatus of the optical module communication error rate according to claim 1 and sensitivity, it is characterized in that, the testing apparatus of the described optical module communication error rate and sensitivity also comprises communication interface, and this control circuit receives control command by described communication interface.
8. according to the optical module communication error rate described in any one in claim 1 ~ 7 and the testing apparatus of sensitivity, it is characterized in that, described control circuit is singlechip controller.
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