CN105897346A - Device for optical signal processing - Google Patents
Device for optical signal processing Download PDFInfo
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- CN105897346A CN105897346A CN201610203375.7A CN201610203375A CN105897346A CN 105897346 A CN105897346 A CN 105897346A CN 201610203375 A CN201610203375 A CN 201610203375A CN 105897346 A CN105897346 A CN 105897346A
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- value
- optical signal
- voa
- control signal
- parameter value
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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
- H04B10/50—Transmitters
- H04B10/564—Power control
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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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
Abstract
The invention discloses a device for optical signal processing, comprising a printed circuit board, a controller, and a VOA. The controller and the VOA are mounted on the printed circuit board. The output end of the VOA is connected with the input end of an optical power meter which is not mounted on the printed circuit board, the output end of the optical power meter is connected with the input end of the controller, and the output end of the controller is connected with the input end of the VOA. According to the device provided by the embodiment of the invention, the corresponding relation between a first parameter value and the value of a first control signal is stored, and the controller controls the VOA according to a control signal determined based on the corresponding relation, which helps to improve the prevision of attenuated optical signals output by the VOA.
Description
Technical field
The present invention relates to electronic applications, particularly relate to a kind of device for optical signal is processed.
Background technology
Adjustable optical attenuator (Variable Optical Attenuator, VOA) is used in fiber optic communication
Plant optical passive component.VOA can carry out attenuation processing to optical signal.
VOA can be specifically MEMS (Micro-Electro-Micromechanical System,
MEMS)VOA。
Central processing unit (Central Processing Unit, CPU) or field programmable gate array
Controllers such as (Field-Programmable Gate Array, FPGA) can send control signal to VOA,
Thus control VOA and the optical signal inputting this VOA is carried out attenuation processing.VOA output through decay
The precision of optical signal poor.
Summary of the invention
In view of this, embodiments provide a kind of device for optical signal is processed, have
Help improve the precision of the optical signal through decay of VOA output.
First aspect, it is provided that a kind of device for processing optical signal, this device includes: print
Circuit board processed, controller and VOA, this controller and this VOA are arranged on this printed circuit board,
The outfan of this VOA is connected with the input of the light power meter being not installed on this printed circuit board,
The outfan of this light power meter is connected with the input of this controller, the outfan of this controller and this VOA
Input be connected；This controller is for sending the first control signal to this VOA；This VOA is used for
Receive the first optical signal by the input of this VOA, under the control of this first control signal to this
One optical signal carries out attenuation processing thus generates the first optical signal through decaying, and by this VOA's
Outfan exports this first optical signal through decaying；This light power meter is for receiving this first light through decaying
Signal, determines the performance number of this first optical signal through decaying, and sends this first warp to this controller
The performance number of the optical signal of decay；This controller is additionally operable to preserve the first parameter value and this first control signal
The corresponding relation of value, this first parameter value is that this is first through the function of the performance number of the optical signal of decay
Value.
By storing the corresponding relation of the value of the first parameter value and the first control signal, controller is right according to this
Should be related to that the control signal determined controls this VOA, it is possible to be effectively improved VOA output through decay
The precision of optical signal.
In conjunction with first aspect, in the first possible implementation of first aspect, this first parameter value
Equal to this first through the performance number of optical signal of decay, or equal to this first optical signal performance number with this
Difference once the performance number of the optical signal decayed.
In conjunction with some implementations of above-mentioned first aspect, in the realization side that the second of first aspect is possible
In formula, this device also includes optical module, and the outfan of this optical module is connected with the input of this VOA,
This optical module is for providing this first optical signal for this VOA.
In conjunction with some implementations of above-mentioned first aspect, in the third possible realization side of first aspect
In formula, this device also includes digital-to-analogue (digital-to-analog, DA) transducer, and this D/A converter is used
In: the value of this first control signal is converted to the first analogue signal；This VOA specifically for this
Under the control of one analogue signal, this first optical signal is carried out attenuation processing thus generate this first through decay
Optical signal.
In conjunction with some implementations of above-mentioned first aspect, in the 4th kind of possible realization side of first aspect
In formula, this device also includes memorizer, and this controller is additionally operable to: indicate this memorizer to store this first ginseng
The corresponding relation of the value of numerical value and this first control signal.
In conjunction with some implementations of above-mentioned first aspect, in the 5th kind of possible realization side of first aspect
In formula, this first parameter value is the first table in mapping table with the corresponding relation of the value of this first control signal
, this first list item includes the value of this first parameter value and this first control signal；This controller is additionally operable to
Determine that this first list item is and this by searching the list item mated with this first parameter value in this mapping table
The list item of the first parameter value coupling, obtains this first parameter value from this first list item, according to this first ginseng
Numerical generation the 3rd control signal, and send the 3rd control signal to this VOA, the 3rd controls
The value of signal is equal to the value of this first control signal；This VOA is additionally operable to the input by this VOA
Receive the 3rd optical signal, under the control of the 3rd control signal, the 3rd optical signal is carried out attenuation processing
Thus generate the 3rd optical signal through decaying, and export the 3rd through declining by the outfan of this VOA
The optical signal subtracted.
In conjunction with some implementations of above-mentioned first aspect, in the 6th kind of possible realization side of first aspect
In formula, this controller is additionally operable to send the second control signal to this VOA；This VOA is additionally operable to pass through
The input of this VOA receives the second optical signal, to this second light under the control of this second control signal
Signal carries out attenuation processing thus generates the second optical signal through decaying, and by the output of this VOA
This second optical signal through decaying of end output；This light power meter is additionally operable to receive this second light letter through decaying
Number, determine that this second through the performance number of optical signal of decay, and sends this second through declining to this controller
The performance number of the optical signal subtracted；This controller is additionally operable to preserve the second parameter value and this second control signal
The corresponding relation of value, this second parameter value is the functional value of the performance number of this second optical signal through decaying,
The value of this first control signal is unequal with the value of this second control signal, this first parameter value with this second
Parameter value is unequal；This controller be additionally operable to the value according to this first control signal, this first parameter value,
The value of this second control signal and this second parameter value, determine linear function y=f (x), this first control
The value of signal is equal to f (this first parameter value), and the value of this second control signal is equal to f (this second parameter value)；
This controller is additionally operable to obtain the 3rd parameter value, according to the 3rd parameter value and this linear function, determines the
The value of three control signals, and send the 3rd control signal to this VOA, the 3rd control signal
Value is equal to f (the 3rd parameter value)；This VOA is additionally operable to receive the 3rd light by the input of this VOA
Signal, carries out attenuation processing to the 3rd optical signal under the control of the 3rd control signal thus generates
Three optical signals through decaying, and export the 3rd optical signal through decaying by the outfan of this VOA,
3rd parameter value is the 3rd through the functional value of performance number of the optical signal of decay, the 3rd parameter value with
This first parameter value is unequal, and the 3rd parameter value is unequal with this second parameter value, and the 3rd controls letter
Number value unequal with the value of this first control signal, the value of the 3rd control signal with this second control letter
Number value unequal.
Alternatively, this controller includes CPU or FPGA, and this memorizer includes flash memory (flash
memory)。
Second aspect, it is provided that a kind of system for processing optical signal, this system includes first
Aspect or first aspect arbitrary may device in implementation and light power meter, this light power meter defeated
Enter end to be connected with the outfan installing VOA on a printed circuit board, the outfan of this light power meter and
The input of the controller being arranged on this printed circuit board is connected.
By storing the corresponding relation of the value of the first parameter value and the first control signal, controller is right according to this
Should be related to that the control signal determined controls this VOA, be favorably improved the light letter through decay of VOA output
Number precision.
Alternatively, this system also includes personal computer (personal computer, PC), this luminous power
The outfan of meter is connected the outfan specifically including this light power meter by being somebody's turn to do with the input of this controller
PC is connected with the input of this controller.
The third aspect, it is provided that a kind of method for processing optical signal, the method is by above-mentioned
The system of any one possible implementation of two aspects or second aspect performs.Or, the method is by upper
The device of any one the possible implementation stating first aspect or first aspect performs.
Fourth aspect, it is provided that a kind of device, including: memorizer, processor, transceiver, VOA,
Light power meter and bus system.Wherein, this memorizer, this processor, this transceiver, this VOA and
This light power meter is connected by this bus system, and this memorizer is used for storing instruction, and this processor is used for holding
The instruction of row this memorizer storage, to control transceivers signal or to send signal, and when this process
When device performs the instruction of this memorizer storage, this execution makes this processor realize second aspect or second party
Controller in any one possible implementation in face.Or, when this processor performs this memorizer
During the instruction of storage, this execution makes this processor realize any one of first aspect or first aspect can
Controller in the implementation of energy.
5th aspect, it is provided that a kind of computer-readable storage medium, is used for storing computer software, computer
Software is capable of the function that above-mentioned aspect describes.
In the embodiment of the present invention, the name of each entity itself is not used in the scope limiting claim.In reality
During border realizes, these entities can occur with other titles.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be in the embodiment of the present invention
The required accompanying drawing used is briefly described, it should be apparent that, drawings described below is only this
Some embodiments of invention, for those of ordinary skill in the art, are not paying creative work
Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is an application scenarios of the technical scheme that the embodiment of the present invention provides.
Fig. 2 is the structural representation of the device for processing optical signal that the embodiment of the present invention provides
Figure.
Fig. 3 is the structural representation of the system for processing optical signal that the embodiment of the present invention provides
Figure.
Fig. 4 be the embodiment of the present invention provide for the method that optical signal is processed.
Fig. 5 is that another structure of the device for processing optical signal that the embodiment of the present invention provides is shown
It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
It is explicitly described.Obviously, described embodiment is a part of embodiment rather than all of the present invention
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
Other embodiments that can obtain on the premise of Dong.
VOA is a kind of optical passive component in fiber optic communication.VOA is realized by fading transmission luminous power
Real-time control to signal, can be with the light such as light wavelength division multiplexing, spectroscopic detectors, erbium-doped fiber amplifier
Device composition ROADM (Reconfigurable Optical Add-Drop Multiplexer,
ROADM) modules such as wavelength division multiplexer (Variable Multiplexer, VMUX) that, light is adjustable.VOA
Also can be used directly in the outfan of optical module on veneer, for realizing the regulation of veneer Output optical power.Adopt
The VOA made of MEMS, in addition to keeping the comprehensive optical property of conventional art VOA, also has
Have that attenuation range is big, driving voltage is low, volume is little, it is integrated to be prone to multichannel, fast response time, sexual valence
Compare advantages of higher.Should be understood that the VOA in the embodiment of the present invention can use MEMS package, it is possible to
To use small-sized encapsulated (Small Form Pluggable, SFP), the embodiment of the present invention is only with MEMS
Illustrate as a example by VOA.
Fig. 1 shows a kind of possible application scenarios of the technical scheme that the embodiment of the present invention provides.Such as figure
Shown in 1, user is communicated by the first electronic equipment and the second electronic equipment.First electronic equipment can
To be computer or mobile phone.Second electronic equipment can be computer or mobile phone.First electronics
The signal of telecommunication that equipment produces, by optical transmitter, is converted into optical signal.Optical signal declines through VOA
Subtracting and process the optical signal produced through decay, the optical signal through decaying is converted into the signal of telecommunication through optical receiver.
The signal of telecommunication that optical receiver generates is sent to the second electronic equipment by optical receiver.
Optical transmitter and optical receiver can be physically integrated in the integrated module of optical transceiver.Optical transmitter
Can also be separate optical module respectively with optical receiver.Optical transmitter and optical receiver may be used for
The transmission of optical signal, it is achieved electric light/light-to-current inversion.Transmission medium is optical fiber.VOA is used for realizing light
The real-time control of signal.In fiber optic communication, generally also include switch as shown in Figure 1.
Fig. 2 shows the knot of the device 100 for processing optical signal that the embodiment of the present invention provides
Structure schematic diagram.As in figure 2 it is shown, this device 100 includes: printed circuit board 110, controller 120 with
And VOA 130, this controller 120 and this VOA 130 be arranged on this printed circuit board 110,
The outfan of this VOA 130 and the light power meter 200 being not installed on this printed circuit board 110
Input is connected, and the outfan of this light power meter 200 is connected with the input of this controller 120, this control
The outfan of device 120 processed is connected with the input of this VOA 130；This controller is for sending out to this VOA
Send the first control signal；This VOA is used for receiving the first optical signal by the input of this VOA,
Under the control of this first control signal, this first optical signal is carried out attenuation processing thus generate first through declining
The optical signal subtracted, and export this first optical signal through decaying by the outfan of this VOA；This light
Energy meter, for receiving this first optical signal through decaying, determines the power of this first optical signal through decaying
Value, and the performance number of this first optical signal through decaying is sent to this controller；This controller is additionally operable to
Preserve the corresponding relation of the value of the first parameter value and this first control signal, this first parameter value be this first
The functional value of the performance number of the optical signal through decaying.
Device 100 shown in Fig. 2 can apply to the scene shown in Fig. 1.Concrete, shown in Fig. 2
Device 100 can realize the optical transmitter in Fig. 1 and VOA's, undertakes the optical transmitter in Fig. 1
And the role of VOA.
In order to improve the luminous power precision through decay of VOA output, the technical side of the embodiment of the present invention
In case, by storing the corresponding pass between the value of this first control signal and the first parameter value in the controller
System, in order to this VOA during follow-up use, the control that controller determines according to this corresponding relation
Signal controls this VOA.For example, it is possible to search in the mapping table according to the first parameter value, and determine
The control signal mated with this first parameter value, light VOA input inputted according to this control signal
Signal carries out attenuation processing, and the value of this control signal determined can be equal with the value of the first control signal.
Therefore, the device being used for optical signal is processed that the embodiment of the present invention provides, it is favorably improved
The luminous power precision through decay of VOA output.
In embodiments of the present invention, controller can only store value and first parameter value of the first control signal
Between corresponding relation, it is also possible to store the corresponding pass between the value of the second control signal and the second parameter
System, i.e. stores the corresponding relation between value and the parameter value of multipair control signal.Optical signal is being declined
Subtract under the scene that the attenuation required for process is steady state value, can only store pair of control in the controller
Corresponding relation between value and the parameter value of signal, but declining required for optical signal is carried out attenuation processing
Decrement is under the scene of the value of change, then need to store in the controller the value of at least two pairs of control signals with
Corresponding relation between parameter value.For convenience, the present invention with store multipair control signal value with
Illustrating as a example by corresponding relation between parameter value, application scenarios is not construed as limiting by the present invention.
Should be understood that the light power meter in the embodiment of the present invention can be hand-held light power meter on the market, also
Can be optical-electrical converter and the light power meter of analog-digital converter composition.Such as, light power meter can pass through
Photodiode and modulus (analog-to-digital, AD) transducer realize.
Controller in the embodiment of the present invention can be central processing unit (Central Processing Unit,
CPU), it is also possible to be field programmable gate array (Field-Programmable Gate Array, FPGA),
Can also is that other have the unit controlling function.
Should also be understood that in embodiments of the present invention connected may refer to two entities and is joined directly together, it is possible to
To be connected by optical connector or electric connector, it is also possible to arrange other devices between two connected entities
Part, such as amplifier etc., the present invention is not especially limited.
The first control signal that controller sends in embodiments of the present invention is digital signal, and VOA is permissible
Directly under the control of this first control signal, the first optical signal is carried out in attenuation processing, such as VOA
Digital to analog converter can be included, VOA can also between be connected under this first control signal the first optical signal
Carrying out attenuation processing, such as, the first control signal is converted into the first analogue signal, VOA by digital to analog converter
Under the control of the first analogue signal, the first optical signal is carried out attenuation processing.
Alternatively, this first parameter value is that this is first permissible through the functional value of performance number of the optical signal of decay
Refer to this first parameter value performance number equal to this first optical signal through decaying, or refer to this first parameter value etc.
In this first optical signal performance number with this first through the difference of performance number of the optical signal of decay.
Alternatively, this device also includes digital-to-analogue (digital-to-analog, DA) transducer, and this controller leads to
Crossing this D/A converter and control this VOA, specifically, this D/A converter is by the value of the first control signal
Be converted to the first analogue signal；First optical signal is entered under the control of this first analogue signal by this VOA
Row attenuation processing thus generate this first through decay optical signal.
In embodiments of the present invention, this first control signal can be voltage.The value of this first control signal
Can be the amplitude of the first analogue signal that D/A converter generates, the i.e. first magnitude of voltage.This first voltage
Value is directly proportional to the pad value of this VOA.Such as, when this first magnitude of voltage is 10mV, this is years old
The performance number of one optical signal with difference that is first pad value of the performance number of this first optical signal through decaying is
2dBm, when this first magnitude of voltage is 20mV, this first pad value is 4dBm.This first control signal
Value can also is that controller input to D/A converter by a DA value of hexadecimal representation, should
DA value is directly proportional to the pad value of this VOA.Such as, when a DA value is 0x0F, should
First pad value is 2dBm, and when a DA value is 0xFF, this first pad value is 4dBm.Control
The value of signal processed can also be the value of other attenuation degrees for indicating optical signal.For convenience,
The value of control signal is illustrated as a example by magnitude of voltage by the embodiment of the present invention.
Specifically, this controller can be 0 to start to choose N number of voltage from magnitude of voltage in the way of using traversal
Value, controls VOA output accordingly through the optical signal of decay, luminous power according to this N number of magnitude of voltage respectively
Counting and the N number of optical power value through the optical signal of decay read is sent to controller, controller is by this N
Individual magnitude of voltage and N number of optical power value through the optical signal of decay store.Specifically, this is N number of
The corresponding relation of the optical power value of magnitude of voltage and N number of optical signal through decay stores in the mapping table.Citing
For, it is 0 to carry out traveling through the luminous power that VOA input is received with step-length for 4mV from magnitude of voltage
The constant optical signal for 20dBm of value carries out attenuation processing, when VOA controls the magnitude of voltage of end input is
During 20mV, the pad value of this VOA has reached maximum attenuation value 10dBm of this VOA, then in traversal
During, record respectively each magnitude of voltage and according to this each magnitude of voltage control VOA output through declining
The performance number of the optical signal subtracted, as such, it is possible to obtain magnitude of voltage-through the performance number of optical signal of decay
Mapping table is as shown in table 1.
Table 1
| Magnitude of voltage (mV) | Performance number (dBm) through the optical signal of decay |
| 4 | 18.1 |
| 8 | 15.9 |
| 12 | 14.3 |
| 16 | 11.7 |
| 20 | 9.8 |
As shown in Table 1, on the premise of the performance number of the optical signal of VOA input reception is 20dBm,
When magnitude of voltage is 4mV, this is 18.1dBm through the performance number of the optical signal of decay, when magnitude of voltage is
During 8mV, this is 15.9dBm through the performance number of the optical signal of decay, for another example, when magnitude of voltage is 20mV
Time, this is 9.8dBm through the performance number of the optical signal of decay.
Should be understood that technical scheme is only illustrated as a example by table 1 by the embodiment of the present invention,
But the present invention is not limited to this, such as, this step-length can be 2, and coexist storage 10 class values etc..
Alternatively, this N number of magnitude of voltage and N number of pad value are stored by controller, N number of pad value
Respectively equal to the performance number of the optical signal that VOA input receives and the output of VOA outfan through decay
The difference of performance number of optical signal.For example, it is 0 to carry out with step-length for 4mV from magnitude of voltage equally
The constant optical signal for 20dBm of optical power value that VOA input is received by traversal is carried out at decay
Reason, when the magnitude of voltage controlling end input of VOA is 20mV, the pad value of this VOA reaches
Maximum attenuation value 10dBm of this VOA, then traversal during, record respectively each magnitude of voltage and
Each pad value, as such, it is possible to the mapping table obtaining magnitude of voltage-pad value is as shown in table 2.
Table 2
| Magnitude of voltage (mV) | Pad value (dBm) |
| 4 | 1.9 |
| 8 | 4.1 |
| 12 | 5.7 |
| 16 | 8.3 |
| 20 | 10.2 |
As shown in Table 2, on the premise of the performance number of the optical signal of VOA input reception is 20dBm,
When magnitude of voltage is 4mV, this pad value is 1.9dBm, when magnitude of voltage is 8mV, and this pad value
For 4.1dBm, for another example, when magnitude of voltage is 20mV, this pad value is 10.2dBm.
Should be understood that technical scheme is only illustrated as a example by table 2 by the embodiment of the present invention,
But the present invention is not limited to this, such as, this step-length can be 2, and coexist storage 10 class values etc..
Alternatively, this device also includes optical module, the outfan of this optical module and the input of this VOA
Being connected, this optical module is for providing this optical signal for this VOA.
Specifically, this optical module is electrical to optical converter, and the optical signal of this optical module output can be performance number
For constant optical signal, it is also possible to being the optical signal of performance number change, the present invention does not limits, it should be appreciated that
Under the scene that optical signal is performance number change of optical module output, controller storage is control signal
Corresponding relation between value and pad value.
Preferably, the storage of this controller is right by between DA value and the pad value of hexadecimal representation
Should be related to.
Specifically, the attenuation range of VOA is 0dBm～10dBm, and the DA on this printed circuit board turns
Parallel operation is in the range of 0x0～0xFF, and wherein, the scope of this DA attenuation range more than this VOA is corresponding
DA range of set value, controller can be within the scope of D/A converter from the beginning of 0x0, with step
A length of 0x4 travels through, and when DA setting value value is 0x14, this pad value has reached this VOA
Maximum attenuation value 10dBm, then during traversal, record each DA value and each with this respectively
Pad value, as such, it is possible to the mapping table obtaining DA value-pad value is as shown in table 3.
Table 3
| DA value | Pad value (dBm) |
| 0x04 | 1.9 |
| 0x08 | 4.1 |
| 0x0C | 5.7 |
| 0x10 | 8.3 |
| 0x14 | 10.2 |
As shown in Table 3, when DA value is 0x04, and this pad value is 1.9dBm, when DA value is 0x08
Time, this pad value is 4.1dBm.For another example, when DA value is 0x14, this pad value is 10.2dBm.
Should be understood that technical scheme is only illustrated as a example by table 2 by the embodiment of the present invention,
But the present invention is not limited to this, such as, this step-length can be 0x2, and coexist storage 10 class values etc..
Alternatively, this device also includes memorizer, this controller specifically for: indicate this memorizer to store
The corresponding relation of the value of this first parameter value and this first control signal.
Alternatively, this first parameter value is in mapping table with the corresponding relation of the value of this first control signal
First list item, this first list item includes the value of this first parameter value and this first control signal；This controller
It is additionally operable to the list item by lookup in this mapping table is mated with this first parameter value and determines this first list item
It is the list item mated with this first parameter value, from this first list item, obtains this first parameter value, according to this
First parameter value generates the 3rd control signal, and sends the 3rd control signal to this VOA, and this is the years old
The value of three control signals is equal to the value of this first control signal；This VOA is additionally operable to by this VOA's
Input receives the 3rd optical signal, declines the 3rd optical signal under the control of the 3rd control signal
Subtract and process thus generate the 3rd through the optical signal of decay, and by the outfan of this VOA export this
Three optical signals through decaying.
Specifically, controller can be searched and the first parameter value in the mapping table such as table 1 to table 3
The list item joined.Such as, user needs attenuated optical signal 4.1dBm, then controller can at table 2 or
Table 3 is searched the list item that mate with 4.1dBm, if from top to bottom capable distinguishes first in table 2 or table 3
List item is to the 5th list item, then controller may determine that the second list item is the list item mated with 4.1dBm, enters
And controller can determine, according to this 4.1dBm, the control signal mated with 4.1dBm in the second list item
Value be 8mV or DA value be 0x08, and according to this 8mV or 0x08 control VOA export warp
The optical signal of decay.
Alternatively, this controller is additionally operable to send the second control signal to this VOA；This VOA also uses
In receiving the second optical signal by the input of this VOA, to this under the control of this second control signal
Second optical signal carries out attenuation processing thus generates the second optical signal through decaying, and by this VOA
Outfan export this second through decay optical signal；This light power meter is additionally operable to receive this second through decay
Optical signal, determine this second through the performance number of optical signal of decay, and to this controller send this
The performance number of two optical signals through decaying；This controller is additionally operable to preserve the second parameter value and this second control
The corresponding relation of the value of signal, this second parameter value is the letter of the performance number of this second optical signal through decaying
Numerical value, the value of this first control signal is unequal with the value of this second control signal, this first parameter value with
This second parameter value is unequal；This controller is additionally operable to the value according to this first control signal, this first ginseng
Numerical value, the value of this second control signal and this second parameter value, determine linear function y=f (x), and this is years old
The value of one control signal is equal to f (this first parameter value), and the value of this second control signal is equal to f (this second ginseng
Numerical value)；This controller is additionally operable to obtain the 3rd parameter value, according to the 3rd parameter value and this linear function,
Determining the value of the 3rd control signal, and send the 3rd control signal to this VOA, the 3rd controls
The value of signal is equal to f (the 3rd parameter value)；This VOA is additionally operable to be received by the input of this VOA
3rd optical signal, under the control of the 3rd control signal, the 3rd optical signal is carried out attenuation processing thus
Generate the 3rd optical signal through decaying, and export the 3rd through decay by the outfan of this VOA
Optical signal, the 3rd parameter value is the functional value of the performance number of the 3rd optical signal through decaying, the 3rd
Parameter value is unequal with this first parameter value, and the 3rd parameter value is unequal with this second parameter value, and this is years old
The value of three control signals is unequal with the value of this first control signal, the value of the 3rd control signal with this
The value of two control signals is unequal.
Specifically, controller can be according to the first list item in mapping table arbitrary in table 1 to table 3 to the 5th
Corresponding relation in list item carries out linear fit and obtains y=f (x), and wherein, y is the value of control signal, x
For parameter value.Illustrating as a example by table 1, user is 20dBm to the performance number that VOA input receives
Optical signal carry out attenuation processing, need to obtain the optical signal through decay that optical power value is 13dBm,
Controller can determine this linear function f according to 5 class values in the first list item in table 1 to the 5th list item,
Assume y=36.4-1.8x, need the optical power value 13dBm i.e. x=13 obtained to bring the party's formula into user
In, the y value i.e. value of control signal can be tried to achieve, controller is further according to the control obtained by the party's formula
Signal controls VOA and obtains the optical signal through decay.
Should be understood that the function in the embodiment of the present invention can be linear relationship, can also be non-linear relation,
For convenience, the present invention illustrates with linear relationship, but this is not limited by the present invention.
The embodiment of the present invention additionally provides a kind of system 1000 for processing optical signal.This system
1000 include according to embodiments of the present invention for the device that optical signal is processed and light power meter, should
The input of light power meter is connected with the outfan of this VOA being arranged on this printed circuit board, this light
The outfan of energy meter is connected with the input of the controller being arranged on this printed circuit board.
Alternatively, in the implementing of system 1000 that the embodiment of the present invention as shown in Figure 3 provides,
This system 1000 also includes PC, and the outfan of this light power meter is connected specifically with the input of this controller
Outfan including this light power meter is connected with the input of this controller by this PC.This PC's is defeated
Entering end to be connected with the outfan of this light power meter, the outfan of this PC is connected with the input of this controller.
Specifically, PC uses the mode of traversal to control CPU and produces N number of DA value, and CPU is by this N
Individual DA value is sent to D/A converter, and this N number of DA value is converted into analogue signal by this D/A converter
Control the optical signal that optical module exports by this VOA respectively and carry out attenuation processing, and this VOA's is defeated
Going out the N number of optical signal through decay of end output, then obtain on PC reading light power meter is N number of through declining
The performance number of the optical signal subtracted, and by the most N number of through decay optical signal be sent to CPU, CPU
The correspondence of the performance number of instruction memorizer storage this DA value of N and this N number of optical signal through decay
Relation.
Should be understood that in application documents, " 0x " represents hexadecimal.
Therefore, the system being used for processing optical signal of the embodiment of the present invention, by storage the first ginseng
The corresponding relation of the value of numerical value and the first control signal, the control letter that controller determines according to this corresponding relation
Number control this VOA, it is possible to be effectively improved the precision of optical signal through decay of VOA output.
System 1000 shown in Fig. 3 can be extended on the basis of the device 100 shown in Fig. 2
Arrive.Specifically, system 1000 include in the embodiment of the present invention for optical signal is processed
Operation that modules in device 100 and light power meter 200, and device 100 realizes and function with
Technique scheme is identical, for sake of simplicity, do not repeat them here.
As shown in Figure 4, the embodiment of the present invention additionally provides a kind of method for processing optical signal
300.The method 300 can apply in the system 1000 shown in Fig. 3.Concrete, shown in Fig. 3
System 1000 may be used for the method shown in Fig. 4 that performs.Seeing Fig. 4, the method 300 includes:
S310, controller sends the first control signal to this VOA；
S320, VOA receive the first optical signal by the input of VOA, in this first control signal
Under control, this first optical signal is carried out attenuation processing thus generate the first optical signal through decaying, Yi Jitong
The outfan crossing this VOA exports this first optical signal through decaying；
S330, light power meter receives this first optical signal through decaying, and determines this first light letter through decaying
Number performance number, and send this first through the performance number of optical signal of decay to this controller；
S340, controller preserves the corresponding relation of the value of the first parameter value and this first control signal, and this is the years old
One parameter value is the functional value of the performance number of this first optical signal through decaying.
Therefore, the method being used for processing optical signal of the embodiment of the present invention, by storage the first ginseng
The corresponding relation of the value of numerical value and the first control signal, in order to this VOA in use, controls
Device controls this VOA according to the control signal that this corresponding relation determines, is favorably improved the warp of VOA output
The precision of the optical signal of decay.
Fig. 5 shows another device 500 according to embodiments of the present invention.This device 500 includes: storage
Device 510, processor 520, transceiver 530, adjustable optical attenuator VOA540 and light power meter 550
Bus system 560.Wherein, this memorizer, this processor, this transceiver, this adjustable optical attenuator VOA
Being connected by this bus system with this light power meter, this memorizer is used for storing instruction, and this processor is used for
Perform the instruction of this memorizer storage, to control transceivers signal or to send signal, and at this
When reason device performs the instruction of this memorizer storage, this processor is used for: send the first control letter to VOA
Number；This VOA is for receiving the first optical signal by the input of this VOA, at this first control letter
Number control under this first optical signal carried out attenuation processing thus generate first through the optical signal of decay, with
And export this first optical signal through decaying by the outfan of this VOA；This light power meter is used for receiving
This first optical signal through decaying, determines the performance number of this first optical signal through decaying, and to this control
Device processed sends the performance number of this first optical signal through decaying；This processor is additionally operable to receive in this first control
Under the control of signal processed, this first optical signal is carried out attenuation processing thus generate the first light letter through decaying
Number, and export this first optical signal through decaying by the outfan of this VOA；Preserve the first parameter
The corresponding relation of the value of value and this first control signal, this first parameter value is this first light letter through decaying
Number the functional value of performance number.
Therefore, the device being used for optical signal is processed that the embodiment of the present invention provides, it is possible to increase
The luminous power precision through decay of VOA output.
Should be understood that in embodiments of the present invention, this processor 520 can be CPU, this processor 520
Can also is that other general processors, digital signal processor (DSP), special IC (ASIC),
FPGA or other PLDs, discrete gate or transistor logic, discrete hardware group
Part etc..General processor can be microprocessor.
This memorizer 510 can include read only memory and random access memory, and to processor 520
Instruction and data is provided.A part for memorizer 510 can also include nonvolatile RAM.
Such as, memorizer 510 can be with the information of storage device type.
This bus system 560 is in addition to including data/address bus, it is also possible to includes power bus, control bus
With status signal bus in addition etc..But for the sake of understanding explanation, in the drawings various buses are all designated as bus
System 560.
During realizing, each step of said method 300 can be by the hardware in processor 520
The instruction of integrated logic circuit or software form completes.In conjunction with the method disclosed in the embodiment of the present invention
Step can be embodied directly in hardware processor and perform, or with the hardware in processor and software mould
Block combination execution completes.Software module may be located at random access memory, flash memory, read only memory, can compile
The storage medium that this areas such as journey read only memory or electrically erasable programmable memorizer, depositor are ripe
In.This storage medium is positioned at memorizer 510, and processor 520 reads the information in memorizer 510, knot
Close its hardware and complete the step of said method 300.For avoiding repeating, it is not detailed herein.
Should be understood that in embodiments of the present invention, device 500 according to embodiments of the present invention may be used for reality
Existing system 1000 shown in Fig. 3.For sake of simplicity, do not repeat them here.
Should be understood that in embodiments of the present invention, " B corresponding with A " represents that B with A is associated, root
B is may determine that according to A.Determine it is also to be understood that determine B to be not meant to only according to A according to A
B, it is also possible to determine B according to A and/or out of Memory.
Those of ordinary skill in the art are it is to be appreciated that combine each of the embodiments described herein description
The unit of example and algorithm steps, it is possible to come real with electronic hardware, computer software or the combination of the two
Existing, in order to clearly demonstrate the interchangeability of hardware and software, the most according to function one
As property describe composition and the step of each example.These functions are held with hardware or software mode actually
OK, application-specific and the design constraint of technical scheme are depended on.Professional and technical personnel can be to each
Specifically should be used for using different methods to realize described function, but this realization is it is not considered that surpass
Go out the scope of the present invention.
Those skilled in the art is it can be understood that arrive, for convenience of description and succinctly, above-mentioned
The specific works process of the system, device and the unit that describe, be referred in preceding method embodiment is right
Answer process, do not repeat them here.
In several embodiments provided herein, it should be understood that disclosed system, device and
Method, can realize by another way.Such as, device embodiment described above is only shown
Meaning property, such as, the division of this unit, it is only a kind of logic function and divides, actual permissible when realizing
Have other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another and be
Unite, or some features can be ignored, or do not perform.It addition, shown or discussed coupling each other
Conjunction or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit or logical
Letter connect, it is also possible to be electric, machinery or other form connect.
This as the unit that separating component illustrates can be or may not be physically separate, as
The parts that unit shows can be or may not be physical location, i.e. may be located at a place, or
Person can also be distributed on multiple NE.Can select according to the actual needs part therein or
All unit realizes the purpose of embodiment of the present invention scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit
In, it is also possible to it is that unit is individually physically present, it is also possible to be that two or more unit are integrated in
In one unit.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ software
The form of functional unit realizes.
If this integrated unit realizes and as independent production marketing using the form of SFU software functional unit
Or when using, can be stored in a computer read/write memory medium.Based on such understanding, this
The part that prior art is contributed by the technical scheme of invention the most in other words, or this technical scheme
Completely or partially can embody with the form of software product, this computer software product is stored in one
In individual storage medium, including some instructions with so that computer equipment (can be personal computer,
Server, or the network equipment etc.) perform all or part of step of each embodiment the method for the present invention.
And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or light
The various medium that can store program code such as dish.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
In this, any those familiar with the art, can be easily in the technical scope that the invention discloses
Expect amendment or the replacement of various equivalence.
Claims (7)
1. one kind is used for the device processing optical signal, it is characterised in that described device includes print
Circuit board processed, controller and adjustable optical attenuator VOA, described controller and described VOA install
On described printed circuit board, the outfan of described VOA be not installed on described printed circuit board
The input of light power meter be connected, the input phase of the outfan of described light power meter and described controller
Even, the outfan of described controller is connected with the input of described VOA；
Described controller is for sending the first control signal to described VOA；
Described VOA is for receiving the first optical signal by the input of described VOA, described first
Under the control of control signal, described first optical signal is carried out attenuation processing thus generate first through decay
Optical signal, and by the outfan output described first of the described VOA optical signal through decaying；
Described light power meter, for receiving the described first optical signal through decaying, determines described first through decay
The performance number of optical signal, and send described first through the power of the optical signal of decay to described controller
Value；
Described controller is additionally operable to preserve the first parameter value pass corresponding with the value of described first control signal
System, described first parameter value is the functional value of the performance number of the described first optical signal through decaying.
Device the most according to claim 1, it is characterised in that described first parameter value is equal to institute
State first through the performance number of optical signal of decay, or equal to the performance number of described first optical signal and described the
Difference once the performance number of the optical signal decayed.
Device the most according to claim 1 and 2, it is characterised in that described device also includes light
Module, the outfan of described optical module is connected with the input of described VOA, described optical module be used for be
Described VOA provides described first optical signal.
Device the most according to any one of claim 1 to 3, it is characterised in that described device
Also include that digital-to-analogue D/A converter, described D/A converter are used for:
The value of described first control signal is converted to the first analogue signal；
Described VOA is specifically for entering described first optical signal under the control of described first analogue signal
Row attenuation processing thus generate described first through decay optical signal.
Device the most according to any one of claim 1 to 4, it is characterised in that described device
Also include memorizer, described controller specifically for:
Described memorizer is indicated to store described first parameter value corresponding with the value of described first control signal
Relation.
Device the most according to any one of claim 1 to 5, it is characterised in that described first
The corresponding relation of the value of parameter value and described first control signal is the first list item in mapping table, described the
One list item includes the value of described first parameter value and described first control signal；
Described controller is additionally operable to mate with described first parameter value by searching in described mapping table
List item determines that described first list item is the list item mated with described first parameter value, from described first list item
Obtain described first parameter value, generate the 3rd control signal according to described first parameter value, and to described
VOA sends described 3rd control signal, and the value of described 3rd control signal controls letter equal to described first
Number value；
Described VOA is additionally operable to receive the 3rd optical signal by the input of described VOA, described the
Under the control of three control signals, described 3rd optical signal is carried out attenuation processing thus generate the 3rd through decay
Optical signal, and by the outfan of described VOA output the described 3rd through the optical signal of decay.
Device the most according to any one of claim 1 to 5, it is characterised in that
Described controller is additionally operable to send the second control signal to described VOA；
Described VOA is additionally operable to be received the second optical signal by the input of described VOA, described
Under the control of two control signals, described second optical signal is carried out attenuation processing thus generate second through decay
Optical signal, and by the outfan of described VOA output described second through the optical signal of decay；
Described light power meter is additionally operable to receive the described second optical signal through decaying, and determines described second through declining
The performance number of the optical signal subtracted, and the merit of the described second optical signal through decaying is sent to described controller
Rate value；
Described controller is additionally operable to preserve the second parameter value pass corresponding with the value of described second control signal
System, described second parameter value is described second through the functional value of performance number of the optical signal of decay, described the
The value of one control signal is unequal with the value of described second control signal, described first parameter value and described the
Two parameter values are unequal；
Described controller is additionally operable to the value according to described first control signal, described first parameter value, described
The value of the second control signal and described second parameter value, determine linear function y=f (x), described first control
The value of signal processed is equal to f (described first parameter value), and the value of described second control signal is equal to f (described second
Parameter value)；
Described controller is additionally operable to obtain the 3rd parameter value, according to described 3rd parameter value and described linear letter
Number, determines the value of the 3rd control signal, and sends described 3rd control signal, institute to described VOA
State the value of the 3rd control signal equal to f (described 3rd parameter value)；
Described VOA is additionally operable to receive the 3rd optical signal by the input of described VOA, described the
Under the control of three control signals, described 3rd optical signal is carried out attenuation processing thus generate the 3rd through decay
Optical signal, and by the outfan of described VOA output the described 3rd through the optical signal of decay, institute
State the functional value that the 3rd parameter value is the performance number of the described 3rd optical signal through decaying, described 3rd parameter
Being worth unequal with described first parameter value, described 3rd parameter value is unequal with described second parameter value, institute
The value stating the 3rd control signal is unequal with the value of described first control signal, described 3rd control signal
It is worth unequal with the value of described second control signal.
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| CN111814105A (en) * | 2020-06-24 | 2020-10-23 | 武汉光迅科技股份有限公司 | Calibration method, device and equipment of coherent optical module and computer readable storage medium |
| CN116488730A (en) * | 2023-06-25 | 2023-07-25 | 广东电网有限责任公司广州供电局 | Optical fiber transmission system for controlling optical signal power |
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