CN106301543A - Luminous power test device - Google Patents

Luminous power test device Download PDF

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Publication number
CN106301543A
CN106301543A CN201510288735.3A CN201510288735A CN106301543A CN 106301543 A CN106301543 A CN 106301543A CN 201510288735 A CN201510288735 A CN 201510288735A CN 106301543 A CN106301543 A CN 106301543A
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CN
China
Prior art keywords
luminous power
circuit
outfan
laser
parameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510288735.3A
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Chinese (zh)
Inventor
汪亮
任聪群
吴庆凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI GUANGJIA INSTRUMENTS CO Ltd
SHANGHAI GRANDWAY TELECOM TECH Co Ltd
Original Assignee
SHANGHAI GUANGJIA INSTRUMENTS CO Ltd
SHANGHAI GRANDWAY TELECOM TECH Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by SHANGHAI GUANGJIA INSTRUMENTS CO Ltd, SHANGHAI GRANDWAY TELECOM TECH Co Ltd filed Critical SHANGHAI GUANGJIA INSTRUMENTS CO Ltd
Priority to CN201510288735.3A priority Critical patent/CN106301543A/en
Publication of CN106301543A publication Critical patent/CN106301543A/en
Pending legal-status Critical Current

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Optical Communication System (AREA)

Abstract

The invention discloses a kind of luminous power test device, process circuit and some photodetectors including fused biconical taper optical branching device, control, fused biconical taper optical branching device includes input and some outfans, and each outfan correspondence connects a photodetector.Laser is assigned to each photodetector by coupling and produces corresponding photoelectric current by fused biconical taper optical branching device, control processes circuit and calculates corresponding luminous power pre-stored the first parameter and the second parameter by photoelectric current, control processes circuit by comparing the ratio between the luminous power of each outfan measured and the first parameter identifies the wavelength of different laser, then is measured the luminous power of input by the luminous power of any one outfan and the second parameter.Described luminous power test device uses pre-stored, compares and calculate the mode combined, and can realize automatically identifying the laser of different wave length, and can the most accurately measure the power level of optical fiber inner laser.

Description

Luminous power test device
Technical field
The present invention relates to a kind of luminous power test device.
Background technology
PON (Passive Optical Network, EPON) technology is a kind of point-to-multipoint light Fine access technology.Advantage critically important in PON system is that simple optical fiber can transmit the letter of different wave length Number, so can more effectively utilize fiber optic network.But the laser of different wave length is under same system Decay and loss are different, so, in the construction of PON system, need to test fibre circuit Active loss to different wave length laser.The detector used due to light power meter is for all of data The laser of the different wave length used in transmission all can produce corresponding photoelectric current, so light merit cannot be passed through The size of rate is distinguished and judges.
Generally for the fibre loss of test different wave length, having two kinds of methods, one is to pass through communication tool The tester at coordination optical fiber two ends, switched laser wavelength and the test wavelength of corresponding light power meter simultaneously, To reach the test purpose being lost accordingly, but in actual PON system, optical fiber two ends may At a distance of dozens of kilometres, and test two ends and be required for tester, therefore adopt and compare expense in such a way Time;Another kind is to load corresponding modulating wave by the light source in optical fiber one end, passes through at the optical fiber other end Identify that modulating wave identifies different wavelength, to reach the test purpose being lost accordingly, but use so Mode determine light source and light power meter and must can be only achieved the effect of convenient identification in the buying of same producer Really.Accordingly, it is capable to really identify the light power meter of optical maser wavelength, the construction of fibre circuit can be greatly facilitated And test.
Summary of the invention
The technical problem to be solved in the present invention is to be inconvenient in prior art identify different wave length to overcome Laser, cause the defect that cannot accurately measure its luminous power, it is provided that a kind of luminous power test device.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of luminous power test device, described luminous power test device include a fused biconical taper optical branching device, One control processes circuit and some photodetectors, described fused biconical taper optical branching device include an input and Some outfans, each described outfan correspondence connects a described photodetector.
Described input is for by Laser Transmission to described fused biconical taper optical branching device, described fused biconical taper light Laser is assigned to each described outfan by coupling by shunt, and the laser assigned to is divided by described outfan Supplementary biography is passed to the described photodetector of correspondence, and described photodetector produces corresponding photoelectric current, described Control processes circuit for being calculated the luminous power of correspondence by described light-spot galvanometer.
Described control processes circuit and is used for pre-stored the first parameter and the second parameter, and described first parameter is phase With the laser of each different wave length under luminous power at ratio between the luminous power of outfan each described, Described second parameter is luminous power and each institute of the described input of the laser of each different wave length described State the ratio of the luminous power of outfan.
Described control processes circuit for by comparing the luminous power measuring each the described outfan arrived Between ratio identify the wavelength of different laser from described first parameter, described control processes circuit also For measuring described input by the luminous power of any one of outfan and described second parameter Luminous power.
It is preferred that described fused biconical taper optical branching device includes 2 outfans.
It is preferred that the splitting ratio of described fused biconical taper optical branching device is 50:50, the laser of i.e. 50% flows into The outfan of described fused biconical taper optical branching device, the laser of 50% flows into described fused biconical taper optical branching device Another outfan.
It is preferred that described input and an optical fiber collimator are connected, described optical fiber collimator is for by light Laser coupled in fibre enters into the input of described fused biconical taper optical branching device.
It is preferred that all of described photodetector and an amplification treatment circuit are connected, at described amplification Reason circuit and an analog to digital conversion circuit are connected, and described control processes circuit and analog-digital conversion circuit as described phase Connecting, described amplification treatment circuit is amplified processing for the photoelectric current producing described photodetector, It is digital signal that analog-digital conversion circuit as described is used for the analog-signal transitions after described photoelectric current amplification.
It is preferred that described control processes circuit and a communicating circuit is connected, described communicating circuit is used for carrying Circuit and computer, panel computer, mobile phone or the data interaction condition of other equipment is processed for described control And pipeline, described communicating circuit can use serial communication circuit, USB, and (Universal Serial Bus leads to With universal serial bus), bluetooth, Wi-Fi (Wireless-Fidelity, Wireless Fidelity), LAN (Local Area Network, LAN) etc. multiple choices scheme.
It is preferred that described luminous power test device include a power module, described power module respectively with institute State amplification treatment circuit, analog-digital conversion circuit as described, described control process circuit, described communicating circuit phase Connecting, described power module is for providing energy support to other modular circuits.
The most progressive effect of the present invention is:
Described luminous power test device uses pre-stored, compares and calculate the mode combined, and can realize certainly The dynamic laser identifying different wave length, and can the most accurately measure the power level of optical fiber inner laser.Described light Device for testing power is without specifying the light source of particular vendors, it is not required that tester is to test two ends, just The laser of different wave length can be identified conveniently and efficiently and measure the power level of optical fiber inner laser.
Accompanying drawing explanation
Fig. 1 is the structural representation of the luminous power test device of a preferred embodiment of the present invention.
Detailed description of the invention
Name preferred embodiment, and combine accompanying drawing and become apparent from intactly illustrating the present invention.
With reference to shown in Fig. 1, the luminous power test device of a preferred embodiment of the present invention mainly includes melted drawing Cone optical branching device 2, control process circuit 7, photodetector 3 and photodetector 4, and described melting is drawn Cone optical branching device 2 includes input 21, outfan 22 and outfan 23, and described outfan 22 is corresponding Connect described photodetector 3, the described outfan 23 described photodetector 4 of corresponding connection, described molten Melting that to draw the splitting ratio of cone optical branching device 2 be 50:50, the laser of i.e. 50% flows into described fused biconical taper light and divides The outfan 22 of road device 2, the laser of 50% flows into the outfan 23 of described fused biconical taper optical branching device 2; Described input 21 is connected with optical fiber collimator 1, and described optical fiber collimator 1 is for by optical fiber Laser coupled enters into the input 21 of described fused biconical taper optical branching device 2;Described photodetector 3 It is connected with amplification treatment circuit 5 with described photodetector 4, described amplification treatment circuit 5 and modulus Change-over circuit 6 is connected, and described control processes circuit 7 and is connected with analog-digital conversion circuit as described 6, institute State amplification treatment circuit 5 for the photoelectricity that described photodetector 3 and described photodetector 4 are produced Stream carries out processing and amplifying, and analog-digital conversion circuit as described 6 is for by the analogue signal after described photoelectric current amplification It is changed into digital signal;Described control processes circuit 7 and is connected with communicating circuit 9, described communicating circuit 9 for providing described control process circuit 7 and computer, panel computer, mobile phone or the number of other equipment According to mutual condition and pipeline, described communicating circuit 9 uses serial communication circuit, it is possibility to have USB, indigo plant The multiple choices scheme such as tooth, Wi-Fi, LAN;Described luminous power test device includes a power module 8, Described power module 8 respectively with described amplification treatment circuit 5, analog-digital conversion circuit as described 6, described control System processes circuit 7, described communicating circuit 9 is connected, and described power module 8 is for other module electricity Road provides energy support.
The laser that fiber-optic transfer comes is coupled into by optical fiber collimator 1 and is mapped to fused biconical taper optical branching device 2 Input 21, laser enters into fused biconical taper optical branching device 2, fused biconical taper light by input 21 Laser is carried out light splitting by splitting ratio by shunt 2, and is respectively outputted to outfan 22 and outfan 23, The laser correspondence assigned to is transferred to photodetector 3, the laser that outfan 23 will be assigned to by outfan 22 Correspondence is transferred to photodetector 4, photodetector 3 and photodetector 4 and produces corresponding photoelectric current, And two-way photoelectric current is transferred to amplification treatment circuit 5, the amplification treatment circuit 5 two-way light to receiving Electric current is amplified respectively processing and is transmitted to analog to digital conversion circuit 6 again, and analog to digital conversion circuit 6 connects The analog-signal transitions received is digital signal, and digital data transmission to control processes circuit 7, control System is processed circuit 7 and is calculated by the digital signal received, and draws outfan 22 and outfan The luminous power of 23.
Fused biconical taper optical branching device 2 is the LMDS Light Coupled Device utilizing fused biconical taper method to make, for making Fused biconical taper optical branching device 2, its coupled power is only relevant to the wavelength of input laser, therefore, difference The ratio of the luminous power that the laser of wavelength exports outfan 22 and outfan 23 there are differences.At control Reason circuit 7 pre-stored the first parameter and the second parameter;Described first parameter is each under known same light power The laser of individual conventional different wave length ratio between the luminous power and the luminous power of outfan 23 of outfan 22 Value;Described second parameter has two kinds of ratios, one to be each conventional different wave length under known same light power Laser at the luminous power of input 21 and the ratio of the luminous power of outfan 22, another kind is known phase With the laser of each conventional different wave length under luminous power at the luminous power of input 21 and the light of outfan 23 The ratio of power.
In use, control processes circuit 7 by comparing the ratio between outfan 22 and outfan 23 With the wavelength that the first parameter identifies incident laser, after recognizing the wavelength of laser, control processes circuit 7 The luminous power of the input 21 of respective wavelength and the ratio of the luminous power of outfan 22 is called in the second parameter Value, then by measurement to the luminous power of outfan 22 calculate the luminous power of input 21 so that Accurately measure the power level of optical fiber inner laser.Equally, it is possible to by calling input in the second parameter The ratio of the luminous power of end 21 and the luminous power of outfan 23 calculates the luminous power of input 21. Described luminous power test device uses pre-stored, compares and calculate the mode combined, and can realize automatically knowing The laser of other different wave length, and can the most accurately measure the power level of optical fiber inner laser.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should managing Solving, this is merely illustrative of, and protection scope of the present invention is defined by the appended claims.Ability The technical staff in territory, can be to these embodiments on the premise of without departing substantially from the principle of the present invention and essence Make various changes or modifications, but these changes and amendment each fall within protection scope of the present invention.

Claims (7)

1. a luminous power test device, it is characterised in that described luminous power test device includes that melts Melt and draw cone optical branching device, a control to process circuit and some photodetectors, described fused biconical taper light branch Device includes an input and some outfans, and each described outfan correspondence connects a described smooth electrical resistivity survey Survey device;
Described input is for by Laser Transmission to described fused biconical taper optical branching device, described fused biconical taper light Laser is assigned to each described outfan by coupling by shunt, and the laser assigned to is divided by described outfan Supplementary biography is passed to the described photodetector of correspondence, and described photodetector produces corresponding photoelectric current, described Control processes circuit for being calculated the luminous power of correspondence by described light-spot galvanometer;
Described control processes circuit and is used for pre-stored the first parameter and the second parameter, and described first parameter is phase With the laser of each different wave length under luminous power at ratio between the luminous power of outfan each described, Described second parameter is luminous power and each institute of the described input of the laser of each different wave length described State the ratio of the luminous power of outfan;
Described control processes circuit for by comparing the luminous power measuring each the described outfan arrived Between ratio identify the wavelength of different laser from described first parameter, described control processes circuit also For measuring described input by the luminous power of any one of outfan and described second parameter Luminous power.
2. luminous power test device as claimed in claim 1, it is characterised in that described fused biconical taper Optical branching device includes 2 outfans.
3. luminous power test device as claimed in claim 2, it is characterised in that described fused biconical taper The splitting ratio of optical branching device is 50:50.
4. luminous power test device as claimed in claim 1, it is characterised in that described input with One optical fiber collimator is connected.
5. luminous power test device as claimed in claim 1, it is characterised in that all of described light Electric explorer and an amplification treatment circuit are connected, described amplification treatment circuit and an analog to digital conversion circuit phase Connecting, described control processes circuit and is connected with analog-digital conversion circuit as described.
6. luminous power test device as claimed in claim 5, it is characterised in that described control processes Circuit and a communicating circuit are connected.
7. luminous power test device as claimed in claim 6, it is characterised in that described luminous power is surveyed Electricity testing device includes a power module, described power module respectively with described amplification treatment circuit, described modulus Change-over circuit, described control process circuit, described communicating circuit is connected.
CN201510288735.3A 2015-05-29 2015-05-29 Luminous power test device Pending CN106301543A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108534894A (en) * 2017-03-02 2018-09-14 上海光维通信技术股份有限公司 Measuring device for analyzing each wavelength light beam luminous power in multiplex light
CN109687905A (en) * 2019-01-24 2019-04-26 国网上海市电力公司 A kind of intelligent substation communication link abnormal state detection system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202648795U (en) * 2012-07-02 2013-01-02 宁波诺驰光电科技发展有限公司 Optical power and wavelength measuring apparatus
CN103647600A (en) * 2013-12-24 2014-03-19 武汉光迅科技股份有限公司 Multi-channel intelligent optical testing device
CN203883838U (en) * 2014-04-03 2014-10-15 镇江奥菲特光电科技有限公司 Multichannel optical power meter used for automatically testing tapering optical branching device
CN104579457A (en) * 2013-10-14 2015-04-29 上海光维通信技术股份有限公司 Optical power testing device of PON (passive optical network) system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202648795U (en) * 2012-07-02 2013-01-02 宁波诺驰光电科技发展有限公司 Optical power and wavelength measuring apparatus
CN104579457A (en) * 2013-10-14 2015-04-29 上海光维通信技术股份有限公司 Optical power testing device of PON (passive optical network) system
CN103647600A (en) * 2013-12-24 2014-03-19 武汉光迅科技股份有限公司 Multi-channel intelligent optical testing device
CN203883838U (en) * 2014-04-03 2014-10-15 镇江奥菲特光电科技有限公司 Multichannel optical power meter used for automatically testing tapering optical branching device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108534894A (en) * 2017-03-02 2018-09-14 上海光维通信技术股份有限公司 Measuring device for analyzing each wavelength light beam luminous power in multiplex light
CN109687905A (en) * 2019-01-24 2019-04-26 国网上海市电力公司 A kind of intelligent substation communication link abnormal state detection system

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Application publication date: 20170104