CN105933058B - PON network equipment bidirectional transmit-receive optical power automatic calibrating method - Google Patents
PON network equipment bidirectional transmit-receive optical power automatic calibrating method Download PDFInfo
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- CN105933058B CN105933058B CN201610250363.XA CN201610250363A CN105933058B CN 105933058 B CN105933058 B CN 105933058B CN 201610250363 A CN201610250363 A CN 201610250363A CN 105933058 B CN105933058 B CN 105933058B
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
Abstract
The invention belongs to single-fiber bidirectional optical net equipment bidirectional transmit-receive optical power calibration fields, more particularly to a kind of PON network equipment bidirectional transmit-receive optical power automatic calibrating method, the following steps are included: the first step, PON network equipment bidirectional transmit-receive optical power self-checking device carries out self calibration；Second step, external PON network equipment to be calibrated connect PON network equipment bidirectional transmit-receive optical power self-checking device, calibrate to the transmitting-receiving optical power of PON network equipment to be calibrated；Above-mentioned PON network equipment bidirectional transmit-receive optical power self-checking device, including two-way automatic calibration unit and centralized control unit, the two-way automatic calibration unit are connected with centralized control unit.The present invention realizes the point-to-point two-way real time calibration of same light source truly, greatly improves accuracy, reduces manual intervention, effectively improves productivity, reduces cost, improves equipment service performance.
Description
Technical field
The invention belongs to single-fiber bidirectional optical net equipment bidirectional transmit-receive optical power calibration fields, and in particular to a kind of PON network
Equipment bidirectional transmit-receive optical power automatic calibrating method.
Background technique
PON (passive optical network) access network technology is the best solution and fiber entering household of FTTx generally acknowledged in the industry
Main access means, optical-fiber network scale and terminal quantity are huge, and this technology can make multiple user sharing simple optical fibers, from
And not needing in optical distribution network (ODN) using any active device, that is, it does not need to convert by " optical electrical/light ", this point
Framework to multiple spot greatly reduces network installation, manages and maintains cost.
Uplink signal uses 1310nm wavelength in PON system (GPON, EPON etc.), downlink signal using 1490nm and
1550nm wavelength is transmitted along same optical fiber in the opposite direction respectively.1310nm uplink signal is kept silent, under by 1490nm
The repeating query of row signal simultaneously distributes a transmission window, and uplink signal accesses (TDMA) mode for multiple optical-fiber network lists using time division multiple acess
The uplink information of first (ONU) is organized into time division multiplexing (TDM) information flow to optical line terminal (OLT).
OAM--Operation Administration and Maintenance.According to the reality of carrier network operation
Border needs, and the management work of network is usually divided into 3 major class: operation (Operation), management (Administration),
It safeguards (Maintenance), abbreviation OAM.The main prediction for completing commodity network and business progress of operation is planned and is matched
Set work；Regular job activity of the maintenance mainly to the progress such as the test of network and its business and fault management.
The transmitting of optical-fiber network running equipment light, received optical power are an important monitor control indexes of OAM；PON network equipment
(OLT, ONU) enormous amount, accurate calibration separate unit for these equipment is time-consuming greatly, cost is too high, at present these light net equipment
Can only calibrate roughly, error is in ± 3dB or so.
PON network equipment bidirectional transmit-receive optical power calibration operation under the prior art, by being compared with etalon optical power meter
To realize calibration.Such as Fig. 1, standard sources passes through optical attenuator first and is connected to etalon optical power meter A；In test wavelength, adjust
Whole optical attenuator uses fiber optical power and reaches calibration performance number, and records the test number of etalon optical power meter at this time；Then again
Standard sources is connected to optical network device B to be calibrated by optical attenuator；Computer connects optical network device to be calibrated, will be rigid
The etalon optical power meter reading value just recorded is dealt into optical network device B to be calibrated, carries out received optical power calibration.
As Fig. 2, optical network device B to be calibrated are connected to etalon optical power meter A；In test wavelength, PON net equipment is adjusted
To emit optical power state, etalon optical power meter reading value is dealt into light net to be calibrated by the etalon optical power meter reading value of record
Network equipment B, carries out transmitting optical power calibration.
In different wave length, above-mentioned steps needs repeat.
Accurate calibration is such as wanted, repeats above-mentioned steps on different wave length, different capacity point.
It can be seen that having the following disadvantages: from described above
1, complex for operation step, low efficiency；
2, uncontrollable node is more, and influence factor is more.
Above-mentioned calibrating mode is the standard that when calibration above a moment reads premised on the optical power of light source output is constant
It is calibrated on the basis of light power meter reading；Therefore the reference light source under the prior art, not actually real meaning is same
One light source.
Factors above influences fiber optical power change, is unfavorable for calibration accurately, and accurate calibration is to optical network device, separate unit consumption
When, cost of labor it is too high.
Summary of the invention
In order to solve the above technical problems, it is an object of the invention to: a kind of PON network equipment bidirectional transmit-receive optical power is provided
Automatic calibrating method realizes the point-to-point two-way real time calibration of same light source truly, and it is accurate to greatly improve calibration
Degree, reduces manual intervention, effectively improves productivity, reduce cost, greatly improves equipment service performance and product competitiveness.
The present invention is technical solution used by solving its technical problem are as follows:
The PON network equipment bidirectional transmit-receive optical power automatic calibrating method, comprising the following steps:
The first step, PON network equipment bidirectional transmit-receive optical power self-checking device carry out self calibration；
Second step, external PON network equipment to be calibrated connect the automatic calibration cartridge of PON network equipment bidirectional transmit-receive optical power
It sets, the transmitting-receiving optical power of PON network equipment to be calibrated is calibrated；
Above-mentioned PON network equipment bidirectional transmit-receive optical power self-checking device, including at least a set of two-way automatic calibration list
Member and centralized control unit, the two-way automatic calibration unit are connected with centralized control unit, and two-way automatic calibration unit includes
Sequentially connected smooth adjustment module, can real-time online output light sampling module and can real-time online input light sampling module, can be real
When online input light sampling module be connected with an optical alignment interface.
Optical alignment interface is used to connect external PON network equipment to be calibrated in the present invention, and two-way automatic calibration unit passes through
Can real-time online output light sampling module and can real-time online input light sampling module realize output to same light source, input light
Power synchronizes real-time monitoring, can carry out two-way calibration to same PON network equipment to be calibrated in synchronization, not do mutually
It relates to, greatly improves calibration efficiency.
Wherein, preferred embodiment are as follows:
The second step synchronizes calibration to PON network equipment bidirectional transmit-receive optical power to be calibrated simultaneously, mainly includes
In terms of following two:
The calibration of A.PON network equipment received optical power: external PON network equipment connection optical alignment interface to be calibrated, and with
Centralized control unit communication, can real-time online output light sampling module real-time monitoring PON network equipment to be calibrated reception light function
Rate, using can real-time online output light sampling module collection result as mete-wand, light is received to external PON network equipment to be calibrated
Power is calibrated；
The B.PON network equipment emits optical power calibration: external PON network equipment connection optical alignment interface to be calibrated, and with
Centralized control unit communication, can real-time online input light sampling module real-time monitoring PON network equipment to be calibrated transmitting light function
Rate, using can real-time online input light sampling module collection result as mete-wand, light is emitted to external PON network equipment to be calibrated
Power is calibrated.
The above process, external PON network equipment to be calibrated, which only need to connect optical alignment interface once PON network can be completed, to be set
Standby transmitting-receiving optical power calibration；Introducing in scheme can real-time online output light sampling module and can real-time online input light sampling mold
Block realizes the point-to-point two-way real time calibration of same light source, reduces external influence factors, optical alignment interface fiber, incident optical power
Measurement is accurate, stablizes, and greatly improves PON net equipment bidirectional transmit-receive optical power calibration accuracy.It may be implemented in synchronization, together
When to the synchronous calibration of PON network equipment bidirectional transmit-receive optical power to be calibrated, PON network equipment input to be calibrated, output light function
Rate can calibrate simultaneously, non-interference, greatly improve calibration efficiency；Optical alignment interface need to only be connected to external PON to be calibrated
Network equipment light business interface is primary, and PON network equipment multi-wavelength to be calibrated, more power points, bidirectional transmit-receive light function can be completed
The automatic calibration of rate.
Under centralized control unit process control, each module and PON network equipment to be calibrated are adjusted, realizes that PON network is set
Standby multi-wavelength, more power points, the automatic calibration and automatic inspection of bidirectional transmit-receive optical power, and automatic discrimination inspection result, and manage
Log archive is managed, automatic information statistical analysis promotes quality management and quality control ability.
Optical network device bidirectional transmit-receive optical power accurate calibration makes optical-fiber network optical node can be with to the transmission power of optical node
Accurate adjustment more preferably meets optical-fiber network operation.
The transmitting of optical-fiber network running equipment light receives the important monitor control index that power is OAM, these light nets are set at present
Standby can only calibrate roughly, and error is big, this makes the transmitting for the light device of OAM monitored, received optical power that can only be used as and comment
Sentence a reference of fiber optic network link-quality.The present invention realizes PON network equipment bidirectional transmit-receive optical power accurate calibration, fortune
Capable PON network equipment also becomes optical metrology device simultaneously, so that the transmitting for the light device of OAM monitored, received optical power
A standard and judgment for judging fiber optic network link-quality can be become, to produce to fiber optic network on-line quality evaluation and monitoring
Raw positive profound significance.
It is described can real-time online output light sampling module include optical splitter I, built-in light power meter I, optical splitter I input
End connection light adjustment module, optical splitter I output end connect all the way can real-time online input light sampling module, optical splitter I is defeated
The other end out connects built-in light power meter I, built-in light power meter I connection centralized control unit, can real-time monitoring optical alignment connect
The Output optical power of mouth；Can real-time online input light sampling module include optical splitter II, built-in light power meter II, optical splitter
II output end connect all the way can real-time online output light sampling module, the other end that optical splitter II exports connects built-in optical power
Meter II, II input terminal of optical splitter connect optical alignment interface, and built-in light power meter II connects centralized control unit, can real-time monitoring
Optical alignment interface input optical power.Can real-time online output light sampling module with can real-time online input light sampling module position
Position in two-way automatic calibration unit can be interchanged, i.e., light adjustment module, can real-time online input light sampling module and can
Real-time online output light sampling module is sequentially connected.
The first step self calibration includes input optical channel self calibration and output optical channel self calibration, wherein output light is logical
Road self-calibration process are as follows: external perimysium reference light power meter connects optical alignment interface, and communicates with centralized control unit, and center control is single
Member adjusts light source mode, wavelength, the optical output power of light adjustment module under program, and Output optical power is made to reach predetermined ginseng
Number, external perimysium reference light power meter and built-in light power meter I measure Output optical power simultaneously, and centralized control unit reads external perimysium reference
The numerical value of light power meter, and the numerical value is passed into built-in light power meter I, using external perimysium reference optical power as mete-wand, internally
Optical power I meter is set to be calibrated；
Input optical channel self-calibration process are as follows: connect the optical alignment interface of two sets of two-way automatic calibration units, two sets double
It is communicated to automatic calibration unit with centralized control unit, two sets of two-way automatic calibration units are respectively with the built-in optical power of other side
I is mete-wand, is calibrated to light power meter II built in oneself；
Device self calibration terminates after input optical channel self calibration.
In output optical channel self-calibration process, centralized control unit adjusts the light source of light adjustment module under program
Mode, wavelength, optical output power, make Output optical power reach predefined parameter, by external perimysium reference light power meter and built-in optical power
Meter I measures the Output optical power of light adjustment module simultaneously.
Two sets two-way automatic calibration units using of input optical channel self calibration be referred to as two-way automatic calibration unit A with
Two-way automatic calibration unit B inputs optical channel self calibration detailed process are as follows:
Centralized control unit under program, adjusts light source mode, wavelength, the light output of two-way automatic calibration unit A
Power makes Output optical power reach predefined parameter；Centralized control unit reads light power meter I built in two-way automatic calibration unit A
Numerical value, and the numerical value is passed into light power meter II built in two-way automatic calibration unit B, built in two-way automatic calibration unit A
Optical power I is mete-wand, is calibrated to light power meter II built in two-way automatic calibration unit B；Similarly, centralized control unit
Under program, light source mode, wavelength, the optical output power for adjusting two-way automatic calibration unit B, reach Output optical power
Predefined parameter, centralized control unit reads light power meter I numerical value built in two-way automatic calibration unit B, and the numerical value is passed to
Light power meter II built in two-way automatic calibration unit A, using optical power I is mete-wand built in two-way automatic calibration unit B, to double
It is calibrated to light power meter II built in automatic calibration unit A.
Device self calibration makes built-in light power meter I and built-in light power meter II become calibration standard source.Built-in optical power
Meter I can accurately measure or reflect the optical power value of optical alignment interface sending；Built-in light power meter II can be measured accurately or instead
The received optical power value of illumination calibration interface, batch carries out PON network equipment and receives and dispatches optical power calibration on this basis, specifically such as
Under:
The calibration of A.PON network equipment received optical power: external PON network equipment connection optical alignment interface to be calibrated, and with
Centralized control unit communication, centralized control unit adjust light source mode, wavelength, the light output of light adjustment module under program
Power makes Output optical power reach predefined parameter, and centralized control unit reads the numerical value of built-in light power meter I, and by the numerical value
External PON network equipment to be calibrated is passed to, external PON network equipment received optical power to be calibrated is calibrated；
The B.PON network equipment emits optical power calibration: external PON network equipment connection optical alignment interface to be calibrated, and with
Centralized control unit communication, centralized control unit adjust PON network equipment to be calibrated under program as transmitting optical power shape
State, and adjust transmission power size in each service wavelength of PON network equipment to be calibrated and its business adjusting power control section, built in light
The transmitting optical power of II real-time monitoring of power meter PON network equipment to be calibrated, centralized control unit read built-in light power meter II
Numerical value, and the numerical value is passed into external PON network equipment to be calibrated, light function is emitted to external PON network equipment to be calibrated
Rate is calibrated；
The above method combines each functional module for realizing calibration, and is integrated and connected；And in a calibration process using can
Real-time online output light sampling module and can real-time online input light sampling module realize to same light source real-time sampling calibrate；?
Under centralized control unit control, multiple light courcess, multi-wavelength, more power points bidirectional transmit-receive optical powers are calibrated automatically；Primary connection can
Batch is calibrated, without variation.
Centralized control unit has communication function, it can be achieved that under the control of external or remote computer program or interaction refers to
It enables and calibrating installation being operated under control.
It is described can real-time online output light sampling module and can real-time online input light sampling module can also share bi-directional light
Splitter, bi-directional light splitter output are respectively connected to built-in light power meter I and built-in light power meter II, two-way optical splitter
Input terminal is connected to optical alignment interface all the way, and another way input terminal is connected to light adjustment module, built-in light power meter I and built in light
Power meter II is separately connected centralized control unit, this scheme is with aforementioned schemes difference can real-time online output light sampling module
With can real-time online input light sampling module shared two-way optical splitter.
The smooth adjustment module includes sequentially connected multi-wavelength stable light source, wavelength switching control module and optical attenuation
Device, multi-wavelength stable light source, wavelength switching control module and optical attenuator are connected with control unit respectively, multi-wavelength stable light source
The light of wavelength needed for calibrating is provided, wavelength switching control module changes the light of respective wavelength to phase in centralized control unit control incision
Port is answered, optical attenuator carries out light intensity decays adjusting under the control of centralized control unit, and optical attenuator is that can automatically adjust
The optical attenuator of gain carries out gain transformations under the control instruction of centralized control unit automatically, and then adjusts its output light letter
Number power level, thus realize under different light sources, under different wave length, different capacity point automatic adjustment.
The multi-wavelength stable light source includes that single mode light source output or multimode light sources output or both have concurrently, is distinguished with it
Corresponding, the two-way automatic calibration unit is to be suitable for the two-way automatic calibration unit of single mode；Or to be suitable for the two-way of multimode
The automatic calibration unit of multimode；Or both have concurrently.
The structure composition of two-way automatic calibration unit is suitable for the automatic calibration unit of bidirection single-mode, two-way multimode is calibrated automatically
Unit；That is, its basic structure is consistent, according to the difference of single mode light source, multimode light sources, relevant interface etc. does adaptability tune
It is whole.
In order to further increase the performance flexibility of device, the wavelength switching control module also adds external light source access
Mouthful.
The smooth adjustment module, can real-time online output light sampling module and can real-time online input light sampling module be one
The integrated package of body is component independent, in other words multi-wavelength stable light source, wavelength switching control module, optical attenuation
Device, can real-time online output light sampling module and can the integrated package that is integrated of real-time online input light sampling module or be respective
Independent component.
The centralized control unit uses microcontroller component or stand-alone computer, can be with multi-wavelength stable light source, wavelength
Switching control module, optical attenuator, can real-time online input light sampling module and can real-time online output light sampling module be one
The integrated package of body is component independent, if the integrated package that each component of device, unit are packaged as a whole, because of structure
Simply reliability is improved, space and cost are also greatly decreased, if each component of device, unit are respectively by autonomous device group
It is attached when at, use according to mode described in the text, the flexibility enhancing of system.
Communication part built in the centralized control unit or connection external communication component, with PON network equipment to be calibrated,
The communication of external smart computer, centralized control unit are connect, and carry out data friendship by communication part with external smart computer
It changes and communicates；Form of communication is wired or wireless, serial ports or network interface, and then realizes long-range, wireless control；It, can be easy to operate
Input/Output Device interface is added for equipment, input equipment interface connects input equipment, such as keyboard；Output equipment interface connects
Output equipment, such as display screen are connect, the LCD touch screen of input, output function is typically integrated.
Unless otherwise specified, the optical device of described in the text is suitable for single mode, multimode two ways.Device used herein
Can also be according to habit, referred to as instrument, platform, system, built-in light power meter described in text, be for external perimysium reference light power meter and
Speech, does not make particular determination to its position, as long as realizing its function.
Compared with prior art, the invention has the following advantages:
Present invention introduces can real-time online input light sampling module and can real-time online output light sampling module, realize real
The point-to-point two-way real time calibration of same light source in meaning reduces external influence factors, improves the reliability, consistent of calibration
Property, the significant increase production efficiency and quality control ability of product, optical alignment interface fiber, incident optical power measurement be accurate,
Stablize, greatly improve PON network equipment bidirectional transmit-receive optical power calibration accuracy, greatly improve product service performance and
Competitiveness effectively improves productivity, reduces cost.
It may be implemented in synchronization, while to the synchronous calibration of PON network equipment bidirectional transmit-receive optical power to be calibrated, to school
Quasi- PON network equipment input, Output optical power can be calibrated simultaneously, non-interference, greatly improve calibration efficiency；It only need to be by light
The external PON network equipment light business interface to be calibrated of calibration interface connection is primary, and the more waves of PON network equipment to be calibrated can be completed
Long, more power points, the automatic calibration of bidirectional transmit-receive optical power；The Product Precision calibrated is high, and quality consistency is good, meets high-precision
Spend the quality requirement of calibration.
Under centralized control unit process control, each module and PON network equipment to be calibrated are adjusted, realizes that PON network is set
Standby multi-wavelength, more power points, the automatic calibration and automatic inspection of bidirectional transmit-receive optical power, and automatic discrimination inspection result, and manage
Manage log archive, automatic information statistical analysis, Improving The Quality of Products analysis, quality control and retrospect management means and ability.
The PON network equipment calibrated can be adaptive to close according to the practical optical-fiber network situation in the network topology run
Reason deploys respective operating parameter, can automatic, difference, precisely, fixed point regulation PON network business optical signal power, Optimization Support net
Network is constantly in optimal working condition, has ensured network data service transmission quality, promotes the data service Service Quality of operator
Amount.The significant increase scientific management means and management level of the operation of optical-fiber network.
Optical network device bidirectional transmit-receive optical power accurate calibration makes optical-fiber network optical node can be with to the transmission power of optical node
Accurate adjustment more preferably meets optical-fiber network operation.
The transmitting of optical-fiber network running equipment light receives the important monitor control index that power is OAM, these light nets are set at present
Standby can only calibrate roughly, and error is big, this makes the transmitting for the light device of OAM monitored, received optical power that can only be used as and comment
Sentence a reference of fiber optic network link-quality.The present invention realizes PON network equipment bidirectional transmit-receive optical power accurate calibration, fortune
Capable PON network equipment also becomes optical metrology device simultaneously, so that the transmitting for the light device of OAM monitored, received optical power
A standard and judgment for judging fiber optic network link-quality can be become, to produce to fiber optic network on-line quality evaluation and monitoring
Raw positive profound significance.
Optical alignment interface of the present invention directly enters PON network equipment light business interface, realizes PON network equipment light business and connects
Mouth point-to-point bi-directional synchronization real time calibration truly, will affect entire optical network device technological progress, professional standard into
Step and industry development trend, make optical-fiber network running equipment become " service operation equipment+photometry by single " service operation equipment "
Amount equipment " becomes a reality, and is the new development trend of optical network device and network operation technology.
Detailed description of the invention
Fig. 1 is that the PON network equipment received optical power under the prior art calibrates schematic diagram.
Fig. 2 is that the PON network equipment under the prior art emits optical power calibration schematic diagram
Fig. 3 is 1 realization principle block diagram of the embodiment of the present invention.
Fig. 4 is present invention output optical channel self calibration process signal.
Fig. 5 is present invention input optical channel self calibration process signal.
Fig. 6 is a kind of output optical channel self-alignment process signal of the wavelength of the present invention in 1310nm.
Fig. 7 is a kind of input optical channel self-alignment process signal of the wavelength of the present invention in 1310nm.
It in PON network equipment to be calibrated transmitting light is 1490nm that Fig. 8, which is the present invention, and receiving light is that 1310nm is calibrated automatically
A kind of process signal.
It in PON network equipment to be tested transmitting light is 1490nm that Fig. 9, which is the present invention, and receiving light is that 1310nm is examined automatically
A kind of process signal.
Figure 10 be the present invention PON network equipment to be calibrated transmitting light be 1490nm, receptions light be 1310nm bi-directional synchronization
Automatically a kind of process signal calibrated.
Figure 11 be the present invention PON network equipment to be tested transmitting light be 1490nm, receptions light be 1310nm bi-directional synchronization
Automatically a kind of process signal examined.
Figure 12 is 2 realization principle block diagram of the embodiment of the present invention.
Figure 13 is 3 realization principle block diagram of the embodiment of the present invention.
Figure 14 is 4 realization principle block diagram of the embodiment of the present invention.
Specific embodiment
Below by way of particular specific embodiment, illustrate implementation of the invention, those skilled in the art can be by this
The content that specification discloses easily understands further advantage and beneficial effect of the invention.The present invention can also be different by other
Specific embodiment is subject to implementation and application.Every details of the invention also can be based on different viewpoint and application, without prejudice to originally
Various modification and transformations are carried out under the premise of invention.
The following are presently preferred embodiments of the present invention, the protection scope that not this patent limits.It is all this patent spirit and
Within principle, made modification, equivalent replacement, improvement are all included in the scope of protection of the present invention.
The embodiment of the present invention is described further with reference to the accompanying drawing:
Embodiment 1:
As shown in figure 3, PON network equipment bidirectional transmit-receive optical power automatic calibrating method of the present invention, including following step
It is rapid:
The first step, PON network equipment bidirectional transmit-receive optical power self-checking device carry out self calibration；
Second step, external PON network equipment to be calibrated connect the automatic calibration cartridge of PON network equipment bidirectional transmit-receive optical power
It sets, the transmitting-receiving optical power of PON network equipment to be calibrated is calibrated；
Above-mentioned PON network equipment bidirectional transmit-receive optical power self-checking device, including at least a set of two-way automatic calibration list
Member and centralized control unit, the two-way automatic calibration unit are connected with centralized control unit, and two-way automatic calibration unit includes
Sequentially connected smooth adjustment module, can real-time online output light sampling module and can real-time online input light sampling module, can be real
When online input light sampling module be connected with an optical alignment interface.
Optical alignment interface is used to connect external PON network equipment to be calibrated in the present invention, and two-way automatic calibration unit passes through
Can real-time online output light sampling module and can real-time online input light sampling module realize output to same light source, input light
Power synchronizes real-time monitoring.
This programme introduce can real-time online input light sampling module and can real-time online output light sampling module, realize it is same
The point-to-point two-way real time calibration of light source, reduces external influence factors, and optical alignment interface fiber, incident optical power measurement are accurate, steady
It is fixed, greatly improve PON network equipment bidirectional transmit-receive optical power calibration accuracy.
It may be implemented in synchronization, while to the synchronous calibration of PON network equipment bidirectional transmit-receive optical power to be calibrated, to school
Quasi- PON network equipment input, Output optical power can be calibrated simultaneously, non-interference, greatly improve calibration efficiency；It only need to be by light
The external PON network equipment light business interface to be calibrated of calibration interface connection is primary, and the more waves of PON network equipment to be calibrated can be completed
Long, more power points, the automatic calibration of bidirectional transmit-receive optical power.
Under centralized control unit process control, each module and PON network equipment to be calibrated are adjusted, realizes that PON network is set
Standby multi-wavelength, more power points, the automatic calibration and automatic inspection of bidirectional transmit-receive optical power, and automatic discrimination inspection result, and manage
Log archive is managed, automatic information statistical analysis promotes quality management and quality control ability.
Optical network device bidirectional transmit-receive optical power accurate calibration makes optical-fiber network optical node can be with to the transmission power of optical node
Accurate adjustment more preferably meets optical-fiber network operation.
The transmitting of optical-fiber network running equipment light receives the important monitor control index that power is OAM, these light nets are set at present
Standby can only calibrate roughly, and error is big, this makes the transmitting for the light device of OAM monitored, received optical power that can only be used as and comment
Sentence a reference of fiber optic network link-quality.The present invention realizes PON network equipment bidirectional transmit-receive optical power accurate calibration, fortune
Capable PON network equipment also becomes optical metrology device simultaneously, so that the transmitting for the light device of OAM monitored, received optical power
A standard and judgment for judging fiber optic network link-quality can be become, to produce to fiber optic network on-line quality evaluation and monitoring
Raw positive profound significance.
It is described can real-time online output light sampling module include optical splitter I, built-in light power meter I, optical splitter I input
End connection light adjustment module, optical splitter I output end connect all the way can real-time online input light sampling module, optical splitter I is defeated
The other end out connects built-in light power meter I, built-in light power meter I connection centralized control unit, can real-time monitoring optical alignment connect
The Output optical power of mouth；Can real-time online input light sampling module include optical splitter II, built-in light power meter II, optical splitter
II output end connect all the way can real-time online output light sampling module, the other end that optical splitter II exports connects built-in optical power
Meter II, II input terminal of optical splitter connect optical alignment interface, and built-in light power meter II connects centralized control unit, can real-time monitoring
Optical alignment interface input optical power；Can real-time online output light sampling module with can real-time online input light sampling module position
Position in two-way automatic calibration unit can be interchanged, i.e., light adjustment module, can real-time online input light sampling module and can
Real-time online output light sampling module is sequentially connected.
The first step self calibration includes input optical channel self calibration and output optical channel self calibration, wherein output light is logical
Road self-calibration process are as follows: external perimysium reference light power meter connects optical alignment interface, and communicates with centralized control unit, and center control is single
Member adjusts light source mode, wavelength, the optical output power of light adjustment module under program, and Output optical power is made to reach predetermined ginseng
Number, external perimysium reference light power meter and built-in light power meter I measure Output optical power simultaneously, and centralized control unit reads external perimysium reference
The numerical value of light power meter, and the numerical value is passed into built-in light power meter I, using external perimysium reference optical power as mete-wand, internally
Optical power I meter is set to be calibrated；Fig. 4 illustrates system in automatic mode, with three wavelength of single mode (such as 1310nm, 1490nm,
Output optical channel self calibration process for 1550nm), Fig. 6 show output optical channel self calibration by taking 1310nm wavelength as an example
A kind of process.
In output optical channel self-calibration process, centralized control unit adjusts the light source of light adjustment module under program
Mode, wavelength, optical output power, make Output optical power reach predefined parameter, by external perimysium reference light power meter and built-in optical power
Meter I measures the Output optical power of light adjustment module simultaneously.
Input optical channel self-calibration process are as follows: after the completion of exporting optical channel self calibration, by two sets of two-way automatic calibration lists
The optical alignment interface connection of member, two sets of two-way automatic calibration units are communicated with centralized control unit, two sets of two-way automatic calibrations
Unit using the built-in optical power I of other side as mete-wand, is calibrated light power meter II built in oneself, Fig. 5 gives respectively
System in automatic mode, the input optical channel self calibration stream by taking three wavelength of single mode (such as 1310nm, 1490nm, 1550nm) as an example
Journey, Fig. 7 show a kind of input self-alignment process of optical channel by taking 1310nm wavelength as an example.
Device self calibration makes built-in light power meter I and built-in light power meter II become calibration standard source, as entire school
The calibration foundation of standard apparatus and judge, built-in light power meter I can accurately measure or reflect the optical power of optical alignment interface sending
Value；Built-in light power meter II can accurately measure or reflect that the optical power value of optical alignment interface, Fig. 8-11 give PON net
Network equipment receives light hair calibration of power signal, and principle is as follows:
The calibration of A.PON network equipment received optical power: PON network equipment to be calibrated connects optical alignment interface, and and center
Control unit communication, centralized control unit adjust the light source mode of light adjustment module, wavelength, light output function under program
Rate makes Output optical power reach predefined parameter, and centralized control unit reads the numerical value of built-in light power meter I, and the numerical value is passed
External PON network equipment to be calibrated is passed, external PON network equipment received optical power to be calibrated is calibrated；To realize
It is automatic to calibrate PON network equipment received optical power under different business wavelength, the automatic adjustment of different capacity point.
The B.PON network equipment emits optical power calibration: external PON network equipment connection optical alignment interface to be calibrated, and with
Centralized control unit communication, centralized control unit adjust PON network equipment to be calibrated under program as transmitting optical power shape
State, and adjust transmission power size in each service wavelength of PON network equipment to be calibrated and its business adjusting power control section, built in light
The transmitting optical power of II real-time monitoring of power meter PON network equipment to be calibrated, centralized control unit read built-in light power meter II
Numerical value, and the numerical value is passed into external PON network equipment to be calibrated, light function is emitted to external PON network equipment to be calibrated
Rate is calibrated；To realize under different business wavelength, different capacity point automatically adjusts, automatic to calibrate PON network equipment hair
Penetrate optical power.
The above method combines each functional module for realizing calibration, and is integrated and connected；And in a calibration process using can
Real-time online output light sampling module and can real-time online input light sampling module realize to same light source real-time sampling calibrate；?
Under centralized control unit control, multiple light courcess, multi-wavelength, more power points bidirectional transmit-receive optical powers are calibrated automatically；Primary connection can
Batch is calibrated, without variation.
Centralized control unit has communication function, it can be achieved that under the control of external or remote computer program or interaction refers to
It enables and calibrating installation being operated under control.
The smooth adjustment module includes sequentially connected multi-wavelength stable light source, wavelength switching control module and optical attenuation
Device, multi-wavelength stable light source, wavelength switching control module and optical attenuator are connected with control unit respectively, multi-wavelength stable light source
The light of wavelength needed for calibrating is provided, wavelength switching control module changes the light of respective wavelength to phase in centralized control unit control incision
Port is answered, optical attenuator carries out light intensity decays adjusting under the control of centralized control unit, and optical attenuator is that can automatically adjust
The optical attenuator of gain carries out gain transformations under the control instruction of centralized control unit automatically, and then adjusts its output light letter
Number power level.
The multi-wavelength stable light source includes that single mode light source output or multimode light sources output or both have concurrently, is distinguished with it
Corresponding, the two-way automatic calibration unit is to be suitable for the two-way automatic calibration unit of single mode；Or to be suitable for the two-way of multimode
The automatic calibration unit of multimode；Or both have concurrently.
The structure composition of two-way automatic calibration unit is suitable for the automatic calibration unit of bidirection single-mode, two-way multimode is calibrated automatically
Unit；That is, its basic structure is consistent, according to the difference of single mode light source, multimode light sources, relevant interface etc. does adaptability tune
It is whole.
In order to further increase the performance flexibility of device, the wavelength switching control module also adds external light source access
Mouthful.
The smooth adjustment module, can real-time online output light sampling module and can real-time online input light sampling module be one
The integrated package of body is component independent, in other words multi-wavelength stable light source, wavelength switching control module, optical attenuation
Device, can real-time online output light sampling module and can the integrated package that is integrated of real-time online input light sampling module or be respective
Independent component.
The centralized control unit uses microcontroller component or stand-alone computer, can be with multi-wavelength stable light source, wavelength
Switching control module, optical attenuator, can real-time online input light sampling module and can real-time online output light sampling module be one
The integrated package of body is component independent, if the integrated package that each component of device, unit are packaged as a whole, because of structure
Simply reliability is improved, space and cost are also greatly decreased, if each component of device, unit are respectively by autonomous device group
It is attached when at, use according to mode described in the text, the flexibility enhancing of system.
Communication part built in the centralized control unit or connection external communication component, with PON network equipment to be calibrated,
The communication of external smart computer, centralized control unit are connect, and carry out data friendship by communication part with external smart computer
It changes and communicates；Form of communication is wired or wireless, serial ports or network interface, and then realizes long-range, wireless control；It, can be easy to operate
Input/Output Device interface is added for equipment, input equipment interface connects input equipment, such as keyboard；Output equipment interface connects
Output equipment, such as display screen are connect, the LCD touch screen of input, output function is typically integrated.
Unless otherwise specified, the optical device of described in the text is suitable for single mode, multimode two ways.Device used herein
Can also be according to habit, referred to as instrument, platform, system, built-in light power meter described in text, be for external perimysium reference light power meter and
Speech, does not make particular determination to its position, as long as realizing its function.
Embodiment 2:
It as shown in figure 12, can real-time online output light sampling module and can real-time online output light sampling mold in the present embodiment
Block shares a two-way optical splitter, and bi-directional light splitter output is respectively connected to built-in light power meter I and built-in optical power
Meter II, input terminal is connected to optical alignment interface to two-way optical splitter all the way, and another way input terminal is connected to light adjustment module, built-in
Light power meter I and built-in light power meter II are separately connected centralized control unit, and the present embodiment other structures are same as Example 1.
Embodiment 3:
As shown in figure 13, optical splitter II is replaced with light path switching device, example on the basis of embodiment 1 by the present embodiment
Such as photoswitch, photoswitch timesharing is connected in optical link, and built-in light power meter II is just switched in optical alignment interface input light.
Embodiment 4:
As shown in figure 14, built-in light power meter is connected to two-way optical splitter, timesharing school by light path switching device timesharing
Quasi- or measurement optical alignment interface input, output light.
Operation instruction:
PON network equipment bidirectional transmit-receive optical power self-checking device first carries out self calibration；
PON network equipment bidirectional transmit-receive optical power self-checking device self calibration includes output optical channel self calibration and input
Optical channel self calibration；
Then the calibration foundation and judge as entire PON network equipment bidirectional transmit-receive optical power self-checking device；
Multi-wavelength stable light source provides the light for calibrating required wavelength；
The optical attenuator adjustment output power that gain can be automatically adjusted, reaches required calibration point；
Wavelength switching control module is used to switch the light of respective wavelength to corresponding port；
Centralized control unit is the control centre of whole device, realizes the functions such as process control, Communication Control.
Centralized control unit combine two-way automatic calibration unit, by automatically control, realize multi-wavelength calibrate automatically with
It examines, the precision and reliability of comprehensive coverage calibration.
Self-checking device elder generation self calibration is using the automatic preparation before automatic calibration；
Then, it is primary that optical alignment interface need to only be connected to external PON network equipment to be calibrated, and built with centralized control unit
PON network equipment multi-wavelength to be calibrated, more power points, the automatic calibration of bidirectional transmit-receive optical power can be completed in vertical communication connection.
It is clear that the present invention is not intended to limit for calibrating PON network equipment bidirectional transmit-receive optical power, in inventive concept
Guidance under, can be also used for wavelength division multiplexed network, communication optical module and other parameters measurement and related application.
Although the present invention is illustrated referring to preferred embodiment and attached drawing, above-mentioned explanation should be regarded as illustrating
And not restrictive, variation and modification that those skilled in the art's spirit according to the present invention is made should belong to the guarantor of this patent to property
Protect range.
Claims (3)
1. a kind of PON network equipment bidirectional transmit-receive optical power automatic calibrating method, which comprises the following steps:
The first step, PON network equipment bidirectional transmit-receive optical power self-checking device carry out self calibration；
Second step, external PON network equipment to be calibrated connects PON network equipment bidirectional transmit-receive optical power self-checking device, right
The transmitting-receiving optical power of PON network equipment to be calibrated is calibrated；
Above-mentioned PON network equipment bidirectional transmit-receive optical power self-checking device, the automatic school of PON network equipment bidirectional transmit-receive optical power
Standard apparatus, including at least a set of two-way automatic calibration unit and centralized control unit, the two-way automatic calibration unit and center
Control unit is connected, and two-way automatic calibration unit includes sequentially connected smooth adjustment module, can real-time online output light sampling mold
Block and can real-time online input light sampling module, can real-time online input light sampling module be connected with an optical alignment interface；
The second step synchronizes calibration to PON network equipment bidirectional transmit-receive optical power to be calibrated simultaneously, mainly includes following
Two aspects:
The calibration of A.PON network equipment received optical power: external PON network equipment to be calibrated connects optical alignment interface, and and center
Control unit communication, can real-time online output light sampling module real-time monitoring PON network equipment to be calibrated received optical power, with
Can real-time online output light sampling module collection result be mete-wand, to external PON network equipment received optical power to be calibrated
It is calibrated；
The B.PON network equipment emits optical power calibration: external PON network equipment to be calibrated connects optical alignment interface, and and center
Control unit communication, can real-time online input light sampling module real-time monitoring PON network equipment to be calibrated transmitting optical power, with
Can real-time online input light sampling module collection result be mete-wand, optical power is emitted to external PON network equipment to be calibrated
It is calibrated；
It is described can real-time online output light sampling module include optical splitter I, built-in light power meter I, optical splitter I input terminal connects
Connect light adjustment module, optical splitter I output end connect all the way can real-time online input light sampling module, optical splitter I output
The other end connects built-in light power meter I, built-in light power meter I connection centralized control unit, can real-time monitoring optical alignment interface
Output optical power；Can real-time online input light sampling module include optical splitter II, built-in light power meter II, optical splitter II is defeated
Outlet connect all the way can real-time online output light sampling module, the other end that optical splitter II exports connects built-in light power meter
II, II input terminal of optical splitter connects optical alignment interface, and built-in light power meter II connects centralized control unit, can real-time monitoring light
Calibration interface input optical power.
2. PON network equipment bidirectional transmit-receive optical power automatic calibrating method according to claim 1, which is characterized in that institute
Stating first step self calibration includes input optical channel self calibration and output optical channel self calibration, wherein
Export optical channel self-calibration process are as follows: external perimysium reference light power meter connects optical alignment interface, and logical with centralized control unit
News, centralized control unit adjust light source mode, wavelength, the optical output power of light adjustment module under program, make output light
Power reaches predefined parameter, and external perimysium reference light power meter and built-in light power meter I measure Output optical power simultaneously, and center control is single
Member reads the numerical value of external perimysium reference light power meter, and the numerical value is passed to built-in light power meter I, is with external perimysium reference optical power
Mete-wand calibrates built-in optical power I meter；
Input optical channel self-calibration process are as follows: after the completion of exporting optical channel self calibration, by two sets of two-way automatic calibration units
The connection of optical alignment interface, two sets of two-way automatic calibration units are communicated with centralized control unit, two sets of two-way automatic calibration units
Respectively using the built-in optical power I of other side as mete-wand, light power meter II built in oneself is calibrated；
Device self calibration terminates after input optical channel self calibration.
3. PON network equipment bidirectional transmit-receive optical power automatic calibrating method according to claim 2, which is characterized in that institute
State input optical channel self-calibration process are as follows:
Two sets of two-way automatic calibration units using of input optical channel self calibration are referred to as two-way automatic calibration unit A and two-way
Automatic calibration unit B, centralized control unit under program, adjust the light source mode of two-way automatic calibration unit A, wavelength,
Optical output power makes Output optical power reach predefined parameter；Centralized control unit reads two-way automatic calibration unit A built in light function
Rate meter I numerical value, and the numerical value is passed into light power meter II built in two-way automatic calibration unit B, with two-way automatic calibration unit A
Built-in optical power I is mete-wand, is calibrated to light power meter II built in two-way automatic calibration unit B；Similarly, center controls
Unit under program, adjusts light source mode, wavelength, the optical output power of two-way automatic calibration unit B, makes Output optical power
Reach predefined parameter, centralized control unit reads light power meter I numerical value built in two-way automatic calibration unit B, and the numerical value is passed
Light power meter II built in two-way automatic calibration unit A is passed, using optical power I built in two-way automatic calibration unit B as mete-wand,
Light power meter II built in two-way automatic calibration unit A is calibrated.
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| CN201610250363.XA CN105933058B (en) | 2016-04-20 | 2016-04-20 | PON network equipment bidirectional transmit-receive optical power automatic calibrating method |
| PCT/CN2017/080700 WO2017181916A1 (en) | 2016-04-20 | 2017-04-17 | Method for automatically calibrating bidirectional light receiving and emitting power of pon network device |
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| CN201610250363.XA CN105933058B (en) | 2016-04-20 | 2016-04-20 | PON network equipment bidirectional transmit-receive optical power automatic calibrating method |
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| WO2017181916A1 (en) * | 2016-04-20 | 2017-10-26 | 山东信通电子股份有限公司 | Method for automatically calibrating bidirectional light receiving and emitting power of pon network device |
| CN106788705A (en) * | 2016-11-30 | 2017-05-31 | 罗江君 | A kind of light power meter integrated test facility |
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| US7881680B1 (en) * | 2006-10-23 | 2011-02-01 | Marvell International Ltd. | Predictive transmitter calibration |
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| CN103217215A (en) * | 2013-02-24 | 2013-07-24 | 山东信通电器有限公司 | Automatic calibration method for optical power meter |
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| US7881680B1 (en) * | 2006-10-23 | 2011-02-01 | Marvell International Ltd. | Predictive transmitter calibration |
| CN103207012A (en) * | 2013-02-24 | 2013-07-17 | 山东信通电器有限公司 | Automatic calibration device for optical power meter |
| CN103217215A (en) * | 2013-02-24 | 2013-07-24 | 山东信通电器有限公司 | Automatic calibration method for optical power meter |
| CN205027441U (en) * | 2015-09-21 | 2016-02-10 | 武汉欧易光电科技股份有限公司 | Transmission luminous power and receipt luminous power calibrating device of SFP optical module |
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