CN101660943A - Optical power detection device and working method thereof - Google Patents
Optical power detection device and working method thereof Download PDFInfo
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- CN101660943A CN101660943A CN 200910178863 CN200910178863A CN101660943A CN 101660943 A CN101660943 A CN 101660943A CN 200910178863 CN200910178863 CN 200910178863 CN 200910178863 A CN200910178863 A CN 200910178863A CN 101660943 A CN101660943 A CN 101660943A
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- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000013519 translation Methods 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 239000013307 optical fiber Substances 0.000 description 9
- 230000006870 function Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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- 239000012141 concentrate Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0204—Compact construction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0219—Electrical interface; User interface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0271—Housings; Attachments or accessories for photometers
Abstract
The invention provides an optical power detection device, comprising a electric power source used for supplying working electric power source for the optical power detection device, an SFP module usedfor detecting the received optical power, a processing module used for reading the value of the optical power detected by the SFP module and calculating the value of the optical power, and a displaymodule used for displaying the value of the optical power after calculation. The invention also provides a working method of the optical power detection device. The optical power detection device provided by the invention is simple and low in cost, and is especially suitable for engineering maintenance items with more using quantity and sensitive cost.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of optical power detection apparatus and method of work thereof.
Background technology
In wireless communication system, often exist equipment to adopt the situation of optical fiber interconnections, the optical fiber two ends need optical module to realize the transmission and the reception of light signal.Optical Fiber Transmission is a kind of strict transmission mode of precision, optical module has a specified transmitting optical power usually, the light signal that sends out has certain optical power attenuation through behind the optical fiber, when light signal arrives the receiving end optical module, if its luminous power just can correctly detect and finish opto-electronic conversion greater than the receiving sensitivity of receiving end optical module.If the luminous power that receives mistake will occur less than the receiving sensitivity of receiving end optical module.
To this kind equipment open with maintenance process in, when abnormal conditions occurring, often need judge whether the luminous power of transmitter side and receiver side normal, discerns fiber transmission link problem or plant issue with this earlier.Like this, just need to use a kind of equipment that can detect luminous power.
The inventor finds that there is following problem at least in prior art: existing a large amount of this luminous power checkout equipment on the market, but existing these luminous power checkout equipment prices are very expensive, give this expensive detection equipment of a large amount of outfits of maintainer normally unpractical.So just occurred that a large amount of user demands are arranged, but the too high a pair of inconsistency of cost.
Summary of the invention
The present invention aims to provide a kind of optical power detection apparatus and method of work thereof, and is very expensive to solve existing luminous power checkout equipment price, the feasible too high problem of cost that detects.
According to an aspect of the present invention, provide a kind of optical power detection apparatus, having comprised: power supply is used to optical power detection apparatus that working power is provided; The SFP optical module is used to detect the luminous power that receives; Processing module is used to read the value of the luminous power that the SFP optical module detects, and the value of luminous power is carried out computing; Display module is used to show the value of the luminous power after the computing.
Preferably, the SFP optical module is supported the SFF-8472 standard.
Preferably, processing unit comprises: single-chip microcomputer, and be used for reading the value of the luminous power that the SFP optical module detects, and the value of luminous power is carried out the unit translation operation by the I2C interface, it is the value of unit that the value of luminous power is converted to dBm; Crystal oscillator is used to single-chip microcomputer that clock signal is provided.
Preferably, display module comprises a plurality of charactrons, and a plurality of charactrons are used to show the value of the luminous power after the computing.
Preferably, in above-mentioned optical power detection apparatus, also comprise: power switch is used to control opening or closing of power supply.
Preferably, in above-mentioned optical power detection apparatus, also comprise: the SFP interface is used to connect the SFP optical module.
According to another aspect of the present invention, also provide a kind of method of work of optical power detection apparatus, may further comprise the steps: detected the luminous power that receives; Value to the luminous power that detects is carried out computing; The value of the luminous power after the demonstration computing.
Preferably, the step that detects the luminous power receive also comprises the value of the luminous power that storage detects.
Preferably, the value of the luminous power that detects being carried out computing comprises: the value that reads the luminous power of detection; Value to luminous power is carried out the unit translation operation, and it is the value of unit that the value of luminous power is converted to dBm.
Preferably, the value of the luminous power after the demonstration computing comprises: with the value of the luminous power after the decimal format demonstration computing.
Owing to utilize the SFP optical module that has the high level diagnostics function, single-chip microcomputer is by the particular address of I2C interface accessing optical module inside, real-time display light mouth received optical power, the price that has solved existing luminous power checkout equipment is very expensive, the feasible too high problem of cost that detects, thereby a kind of simple and easy, optical power detection apparatus cheaply is provided, has been particularly suitable for the engineering maintenance project of large usage quantity, cost sensitivity.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the application scenarios synoptic diagram according to the optical power detection apparatus of the embodiment of the invention;
Fig. 2 shows the synoptic diagram according to the optical power detection apparatus of the embodiment of the invention;
Fig. 3 shows the synoptic diagram of optical power detection apparatus according to the preferred embodiment of the invention;
Fig. 4 shows the process flow diagram according to the method for work of the optical power detection apparatus of the embodiment of the invention;
Fig. 5 shows the process flow diagram of the method for work of optical power detection apparatus according to the preferred embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the application scenarios synoptic diagram according to the optical power detection apparatus of the embodiment of the invention, (the Radio Equipment Control of radio equipment controller among the figure, REC) and wireless device (Radio Equipment, RE) represent proximal device and remote equipment respectively, adopt optical fiber to interconnect between them, generally include a downlink optical fiber 101 and a uplink optical fibers 102.These optical fiber in actual applications, some may reach tens of kms even km up to a hundred length, can cause certain decay to optical signal power, for equipment can normally move, guarantee that the luminous power that receives is in the scope that the optical module of its use can detect.Therefore, equipment open with maintenance process in, need adopt optical power detection apparatus (as light power meter) that the luminous power of the T1/R1 port of the T1/R1 of REC or RE is detected with affirmation equipment or link through regular meeting and whether have problems.
Fig. 2 shows the synoptic diagram according to the optical power detection apparatus of the embodiment of the invention, and Fig. 3 shows the synoptic diagram of optical power detection apparatus according to the preferred embodiment of the invention.
As shown in Figure 2, this optical power detection apparatus comprises: power supply 10 is used to each parts of this optical power detection apparatus that working power is provided; SFP optical module 20 is used to detect the luminous power that receives; Processing module 30 is used to read the value of the luminous power that the SFP optical module detects, and the value of luminous power is carried out computing; Display module 40 is used to show the value of the luminous power after the computing.
Wherein, SFP optical module 20 is supported the SFF-8472 standard.
This embodiment is owing to utilize the SFP optical module that has the high level diagnostics function, processing unit reads the value of the luminous power of SFP optical module detection and also passes through the real-time display light mouth of display module received optical power, the price that has solved existing luminous power checkout equipment existence is very expensive, the feasible too high problem of cost that detects.This embodiment provides a kind of simple and easy, optical power detection apparatus cheaply, is particularly suitable for the engineering maintenance project of large usage quantity, cost sensitivity.
Preferably, as shown in Figure 3, processing unit 30 comprises: single-chip microcomputer 301, and be used for reading the value of the luminous power that SFP optical module 20 detects, and the value of luminous power is carried out the unit translation operation by the I2C interface, it is the value of unit that the value of luminous power is converted to dBm; Crystal oscillator 302 is used to single-chip microcomputer 301 that clock signal clk is provided.
Preferably, as shown in Figure 3, display module 40 comprises that 401,402, two charactrons 401,402 of two charactrons show the value of the luminous power after the computing with decimal format.
Preferably, as shown in Figure 3, in above-mentioned optical power detection apparatus, also comprise: power switch 103 is used to control opening or closing of power supply 10.
Preferably, in above-mentioned optical power detection apparatus, also comprise: the SFP interface is used to connect SFP optical module 20.Like this, can change the different wavelength of optical module support according to using easily.
In addition, the inventor finds also that in actual use to safeguarding same kind equipment, a lot of functions of existing light power meter have all been wasted.Because to same kind equipment, the optical module of use mostly is the same, and reference optical power need not be too big, need also need not be very high as safeguarding to the precision that luminous power detects, and wavelength is also fixed usually, therefore causes unnecessary significant wastage.
This embodiment with a kind of simple and easy, scheme provides the luminous power measuring ability cheaply, can satisfy most application demands fully.
The present invention is by the following technical solutions:
Utilization has the optical module (observing the SFF-8472 standard) of high level diagnostics function, by the particular address of I2C interface accessing optical module inside, and real-time display light mouth received optical power.The specific implementation device comprises a single-chip microcomputer, a SFP optical module (observing the SFF-8472 standard), two charactrons, a crystal oscillator, a battery supply and a power switch, as shown in Figure 3.Software program is stored in single-chip microcomputer inside, turns on the power switch the back Single Chip Microcomputer (SCM) program control that powers on and the I2C interface of optical module is carried out periodicity reads, and after computing, conversion, controls charactron and shows.Because adopt the SFP optical module, can support different wavelength according to using the replacing optical module easily simultaneously.
The present invention provides the luminous power measuring ability with a kind of simple and easy, lower cost solution, can satisfy most application demands fully.The maximum specific low cost that just is of this invention estimates that its cost is less than 1/10 of dedicated optical power detection device.
This optical power detection apparatus mainly comprises as shown in Figure 3: battery supply 10 provides this pick-up unit required power supply; Crystal oscillator 302 provides the Single Chip Microcomputer (SCM) program clock that operation needs; Single-chip microcomputer 301 is realized by the I2C interface the reading of optical module received optical power information, and is shown by charactron 401,402; SFP optical module 20 is connected with optical fiber, is used to detect the luminous power that receives; Power switch 103, the opening and closing of control power supply.Wherein, the SFP optical module is connected with the SFP socket, and this SFP socket connects the multiple optical module that can support the SFP interface, can change the different wavelength of optical module support according to using easily by this SFP socket.Downward unidirectional arrow among Fig. 3 between single-chip microcomputer 301 and the SFP optical module 20 is represented clock line, and four-headed arrow is represented data line.
According to SFF-8472 agreement regulation, support the optical module of this agreement that the received optical power measuring ability can be provided, can conduct interviews to it by standard I 2C interface.104～105 bytes at the A2 address field are used for depositing the received optical power data, and 104,105 bytes are represented high 8bit and low 8bit respectively, and least unit is 0.1uW, like this peak power scope of Zhi Chiing be 0～6.5536mW (40dBm～+ 8.2dBm).Normally used optical module requires the luminous power of input all less than 0dBm, and receive luminous sensitivity generally all-15dBm～-30dBm (optical module of occurrence and use is relevant), so in fact just can show received optical power with 2bit, unit is dBm.
Fig. 4 shows the process flow diagram according to the method for work of the optical power detection apparatus of the embodiment of the invention, may further comprise the steps:
Step S10 detects the luminous power that receives;
Step S20 carries out computing to the value of the luminous power that detects;
Step S30, the value of the luminous power after the demonstration computing.
Preferably, in step S10, also comprise: the value of the luminous power that storage detects.This step is carried out by SFP optical module shown in Figure 2.
Preferably, step S20 comprises: the value that reads the luminous power of detection; Value to luminous power is carried out the unit translation operation, and it is the value of unit that the value of luminous power is converted to dBm.This step is carried out by processing module shown in Figure 2.
Preferably, step S30 comprises: with the value of the luminous power after the decimal format demonstration computing.This step is carried out by display module shown in Figure 2.
Fig. 5 shows the process flow diagram of the method for work of optical power detection apparatus according to the preferred embodiment of the invention, and step is as follows:
Step S502, after power switch was opened, the program of single-chip microcomputer inside brought into operation, and drove the charactron acquiescence and showed duration " FF " just;
Step S504, Single Chip Microcomputer (SCM) program control Simulation with I 2C interface sequence, the FLASH (flash memory) of visit optical module judges whether to be SFP optical module (00 byte of A0 address field) that fundamental purpose is to judge whether the I2C interface can normally visit.If visit is normal, then jumps to step S506, otherwise jump to step S508;
Step S506, the FLASH of visit optical module judges whether to support SFF-8472 standard (94 bytes of A0 address field), if support, jumps to step S510, otherwise jumps to step S512;
Step S508 drives charactron acquiescence display abnormality value " EE " (user need check whether optical module reliably inserts, and whether optical module has problem), jumps to step S518;
Step S510 reads optical module received power value (104～105 bytes of A2 address field) by the I2C interface;
Step S512 drives the charactron acquiescence and shows invalid value " DD " (user need change the optical module of supporting the high level diagnostics function), jumps to step S518;
Step S514 carries out the unit conversion with the performance number of reading, and is unit with dBm;
Step S516 drives charactron and shows performance number (with 10 system forms 10 of the result and a place value are presented at respectively on two charactrons, unit is dBm), jumps to step S518;
Step S518, the demonstration that keeps charactron behind the time-delay certain hour, is jumped to step S504 and is restarted circulation.
From above description, as can be seen, the present invention has realized following technique effect: owing to utilize the SFP optical module that has the high level diagnostics function, single-chip microcomputer is by the particular address of I2C interface accessing optical module inside, real-time display light mouth received optical power, the price that has solved existing luminous power checkout equipment existence is very expensive, the feasible too high problem of cost that detects, thereby a kind of simple and easy, optical power detection apparatus cheaply is provided, has been particularly suitable for the engineering maintenance project of large usage quantity, cost sensitivity.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the memory storage and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an optical power detection apparatus is characterized in that, comprising:
Power supply is used to described optical power detection apparatus that working power is provided;
The SFP optical module is used to detect the luminous power that receives;
Processing module is used to read the value of the luminous power that described SFP optical module detects, and the value of described luminous power is carried out computing;
Display module is used to show the value of the luminous power after the computing.
2. optical power detection apparatus according to claim 1 is characterized in that, described SFP optical module is supported the SFF-8472 standard.
3. optical power detection apparatus according to claim 2 is characterized in that, described processing unit comprises:
Single-chip microcomputer is used for reading by the I2C interface value of the luminous power that described SFP optical module detects, and the value of described luminous power is carried out the unit translation operation, and it is the value of unit that the value of described luminous power is converted to dBm;
Crystal oscillator is used to described single-chip microcomputer that clock signal is provided.
4. optical power detection apparatus according to claim 3 is characterized in that described display module comprises a plurality of charactrons, and described a plurality of charactrons are used to show the value of the luminous power after the described computing.
5. optical power detection apparatus according to claim 1 is characterized in that, also comprises:
Power switch is used to control opening or closing of described power supply.
6. optical power detection apparatus according to claim 1 is characterized in that, also comprises:
The SFP interface is used to connect described SFP optical module.
7. the method for work of an optical power detection apparatus is characterized in that, may further comprise the steps:
The luminous power that detection receives;
Value to the luminous power that detects is carried out computing;
The value of the luminous power after the demonstration computing.
8. method of work according to claim 7 is characterized in that, the step that detects the luminous power that receives also comprises the value of the luminous power of storing described detection.
9. method of work according to claim 8 is characterized in that, the value of the luminous power that detects is carried out computing comprise:
Read the value of the luminous power of described detection;
Value to described luminous power is carried out the unit translation operation, and it is the value of unit that the value of described luminous power is converted to dBm.
10. method of work according to claim 9 is characterized in that, the value of the luminous power after the demonstration computing comprises:
Value with the luminous power after the decimal format demonstration computing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910178863 CN101660943A (en) | 2009-09-29 | 2009-09-29 | Optical power detection device and working method thereof |
| PCT/CN2010/073875 WO2010145517A1 (en) | 2009-09-29 | 2010-06-12 | Optical power detection device and operating method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910178863 CN101660943A (en) | 2009-09-29 | 2009-09-29 | Optical power detection device and working method thereof |
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| CN101660943A true CN101660943A (en) | 2010-03-03 |
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| WO (1) | WO2010145517A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145517A1 (en) * | 2009-09-29 | 2010-12-23 | 中兴通讯股份有限公司 | Optical power detection device and operating method thereof |
| WO2014000466A1 (en) * | 2012-06-28 | 2014-01-03 | 华为技术有限公司 | Optical power detection method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5825516A (en) * | 1996-07-25 | 1998-10-20 | Hewlett-Packard Company | Optical power meter for detecting loss factors in fiber optic communications |
| CN2664296Y (en) * | 2003-12-15 | 2004-12-15 | 青岛海信光电科技股份有限公司 | Monitoring circuit for optical transmitting-receiving integrated module |
| US7787767B2 (en) * | 2007-04-05 | 2010-08-31 | Emcore Corporation | Eye safety in electro-optical transceivers |
| CN101294866B (en) * | 2007-04-27 | 2010-06-02 | 英保达股份有限公司 | Optical power measuring device capable of checking optical fiber joint end face |
| CN101394230B (en) * | 2008-10-30 | 2012-08-22 | 武汉电信器件有限公司 | Intelligent 10Gbps pluggable light transceiving module and main work flow thereof |
| CN101660943A (en) * | 2009-09-29 | 2010-03-03 | 中兴通讯股份有限公司 | Optical power detection device and working method thereof |
-
2009
- 2009-09-29 CN CN 200910178863 patent/CN101660943A/en active Pending
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2010
- 2010-06-12 WO PCT/CN2010/073875 patent/WO2010145517A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145517A1 (en) * | 2009-09-29 | 2010-12-23 | 中兴通讯股份有限公司 | Optical power detection device and operating method thereof |
| WO2014000466A1 (en) * | 2012-06-28 | 2014-01-03 | 华为技术有限公司 | Optical power detection method and device |
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| Publication number | Publication date |
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| WO2010145517A1 (en) | 2010-12-23 |
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Application publication date: 20100303 |