CN107342822A - Power regulating method and device, optical communication system for optical network unit - Google Patents
Power regulating method and device, optical communication system for optical network unit Download PDFInfo
- Publication number
- CN107342822A CN107342822A CN201610284997.7A CN201610284997A CN107342822A CN 107342822 A CN107342822 A CN 107342822A CN 201610284997 A CN201610284997 A CN 201610284997A CN 107342822 A CN107342822 A CN 107342822A
- Authority
- CN
- China
- Prior art keywords
- optical
- control module
- image intensifer
- power
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/2933—Signal power control considering the whole optical path
- H04B10/2939—Network aspects
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides a kind of power regulating method for optical network unit and device, optical communication system, this method to include：Control module receives the regulating command of optical network unit, controls image intensifer and optical attenuator to work according to regulating command；For image intensifer under the control of control module, the transmitting light to optical network unit carries out luminous power amplification, and image intensifer carries out non-amplification at the same level to the flashlight in transmitting light and Crosstalk；For optical attenuator under the control of control module, the transmitting light to optical network unit carries out optical power attenuation, and optical attenuator carries out decay at the same level to the flashlight in transmitting light and Crosstalk.By the implementation of the present invention, the transmitting luminous power for the ONU that decayed using optical attenuator, it can effectively mitigate cross talk effects, be amplified using transmitting luminous power of the image intensifer to ONU, so that ONU transmitting luminous power meets the requirement of NGPON2 standards.
Description
Technical field
The present invention relates to optical communication field, more particularly to a kind of power regulating method for optical network unit
And device, optical communication system.
Background technology
With the variation of user terminal business, as high-definition network TV, cloud storage cloud computing, social networks,
The popularization of video sharing etc., the number of users of operator's broadband access network increasingly increase, the access of user
Also in sharp increase, GPON, 10GPON EPON need to more Large Copacity, more bandwidth demand
Wide coverage, lower unit bandwidth cost, more convenient O＆M, the NG-PON2 of more high energy efficiency
(Next-Generation Passive Optical Network Stage 2, next-generation passive optical access network second
Stage) evolution.And in order to develop more advanced Optical Access Network, FSAN (Full Service Access
Network, international Full-Services access network) working group and ITU-T (International
Telecommunication Union-Telecommunication Standardization Sector, international telecommunication
The Union, Telecommunication Bureau of Standards), cooperation is formulated with high capacity data transmittability, multi-service/full-service
There is provided enabling capabilities, flexible network operation ability optical access network system of future generation international technical standards
--- the NG-PON2 of ITU-T G.989 series standards, i.e. 40G-PON technical standard.
In order to reduce upgoing O OB (out of band) and OOC (out of in NGPON2 standards
Channel) crosstalk, it is proposed that ONU (Optical Network Unit, optical network unit) optical power adjusting
Section mechanism (Optical Power Backoff, OPB), the mechanism can also realize multi-wavelength passage every
From and solve OLT (Optical Line Terminal, optical line terminal) receiver overload problem, it is and real
Existing ONU optical power adjustments mechanism will be using victim way optical power budget as cost, in NGPON2 standards
In be related to the budgetary request of channel optical power, if using optical power adjustment machine in NGPON2 systems
System, it will cause optical power budget deficiency standard requirement the problem of.
Therefore, how providing one kind can solve to use existing optical power adjustment in NGPON2 systems
Mechanism cause optical power budget deficiency standard requirement power regulating method, be those skilled in the art urgently
The technical problem of solution.
The content of the invention
The invention provides a kind of power regulating method for optical network unit and device, optic communication system
System, to solve to cause optical power budget not using existing optical power adjustment mechanism in NGPON2 systems
The problem of sufficient standard requirement.
The invention provides a kind of power regulating method for optical network unit, it includes：
Control module receives the regulating command of optical network unit, and image intensifer and light are controlled according to regulating command
Attenuator works；
Under the control of control module, the transmitting light to optical network unit carries out luminous power and put image intensifer
Greatly, image intensifer carries out non-amplification at the same level to the flashlight in transmitting light and Crosstalk；
Under the control of control module, the transmitting light to optical network unit carries out luminous power and declined optical attenuator
Subtract, optical attenuator carries out decay at the same level to flashlight in transmitting light and Crosstalk.
Further, power regulating method includes：Optical network unit judges that it is launched luminous power and meets standard
It is required that regulating command, the control of control module generation first are sent to control module according to light path and device loss
System instruction, control image intensifer amplification luminous power.
Further, power regulating method includes：Optical network unit judges that it is launched luminous power and is unsatisfactory for marking
Alignment request, luminous power and standard requirement is launched according to it, light path and device loss sends to control module and adjusted
Section instruction, control module generate the second control instruction, control image intensifer amplification luminous power.
Further, power regulating method includes：Optical network unit judges that the Crosstalk in transmitting light does not have
Reach standard requirement, then required according to standard, regulating command, control module generation are sent to control module
3rd control instruction, control optical attenuator carry out optical power attenuation to transmitting light；Optical network unit judges to decline
In transmitting light after subtracting flashlight luminous power be not reaching to standard requirement, then according to the luminous power after decay,
Light path and device loss, regulating command being sent to control module, control module generates the 4th control instruction,
Control image intensifer amplification luminous power.
Further, power regulating method includes：Control module determines optical attenuator according to regulating command
Pad value, judges whether pad value exceeds the adjustable range of optical attenuator, if pad value exceeds optical attenuator
Adjustable range, then according to the adjustable range, light path and device loss of optical attenuator generation the 5th control refer to
Order, adjust the amplification luminous power of image intensifer.
Further, power regulating method includes：Control module judges whether to need according to regulating command
Image intensifer is turned on and off, if desired opens image intensifer, then generates OPEN, opens light amplification
Device, image intensifer is if desired closed, then generate out code, close image intensifer.
Further, power regulating method is after image intensifer is turned off, in addition to：Generate attenuation instructions,
The pad value of control optical attenuator is adjusted to maximum.
The invention provides a kind of PCU Power Conditioning Unit for optical network unit, it includes：For exporting
Launch optical network unit, control module, image intensifer and the optical attenuator of light；Wherein,
Control module, for receiving the regulating command of optical network unit, light amplification is controlled according to regulating command
Device and optical attenuator work；
Image intensifer, under the control of control module, the transmitting light to optical network unit to carry out light work(
Rate is amplified, and image intensifer carries out non-amplification at the same level to the flashlight in transmitting light and Crosstalk；
Optical attenuator, under the control of control module, the transmitting light to optical network unit to carry out light work(
Rate decays, and optical attenuator carries out decay at the same level to flashlight in transmitting light and Crosstalk.
Further, optical network unit is used to judge that it is launched luminous power and meets standard requirement, according to light path
And device loss sends regulating command to control module, control module is used to generate the first control instruction, control
Image intensifer processed amplifies luminous power.
Further, optical network unit is additionally operable to judge that it is launched luminous power and is unsatisfactory for standard requirement, according to
It launches luminous power and standard requirement, light path and device loss sends regulating command, control to control module
Module is used to generate the second control instruction, control image intensifer amplification luminous power.
Further, optical network unit is used to judge that the Crosstalk in transmitting light to be not reaching to standard requirement,
Then required according to standard, regulating command is sent to control module, and control module is used to generate the 3rd and control to refer to
Order, control optical attenuator carry out optical power attenuation to transmitting light；Optical network unit is additionally operable to after judging decay
Transmitting light in flashlight luminous power be not reaching to standard requirement, then according to the luminous power after decay, light path
And device loss, regulating command is sent to control module, control module is used to generate the 4th control instruction,
Control image intensifer amplification luminous power.
Further, control module is additionally operable to determine the pad value of optical attenuator according to regulating command, judges
Whether pad value exceeds the adjustable range of optical attenuator, if pad value exceeds the adjustable range of optical attenuator,
The 5th control instruction is then generated according to the adjustable range, light path and device loss of optical attenuator, regulation light is put
The amplification luminous power of big device.
Further, control module is used to be turned on and off image intensifer according to regulating command, if desired beats
Switching amplifier, then OPEN is generated, open image intensifer, if desired close image intensifer, then give birth to
Into out code, image intensifer is closed.
Further, control module is used for after image intensifer is turned off, and is additionally operable to generate attenuation instructions,
The pad value of control optical attenuator is adjusted to maximum.
The invention provides a kind of optical communication system, and it includes：Optical network unit and provided by the invention
PCU Power Conditioning Unit, the optical network unit in PCU Power Conditioning Unit include light emission component, light emission component
Connect the image intensifer and/or optical attenuator of PCU Power Conditioning Unit.
Further, the control module in PCU Power Conditioning Unit, image intensifer and optical attenuator are using discrete
Form is arranged on outside light emission component, or, it is integrated in using integrated form within light emission component.
Beneficial effects of the present invention：
The invention provides a kind of PCU Power Conditioning Unit, the composition of the device includes control circuit, optical attenuation
Device and image intensifer, control circuit receives the regulating command that ONU is sent, and controls light decay according to instruction
Subtract device and image intensifer, transmitting luminous power of the optical attenuator for the ONU that decays, this decay can be to letter
Outer (the OOB, OOC) light intensity (i.e. crosstalk) of light intensity and channel while decayed in road, it is such
Words can effectively mitigate cross talk effects, but simultaneously it is also possible that light intensity does not reach optical power budget in channel
Requirement, the transmitting luminous power that the function of image intensifer includes to ONU is amplified, so that ONU
Transmitting luminous power meet the requirements of NGPON2 standards, can compensate to reduce crosstalk light decay outside channel
Subtract decay of the device for light intensity in channel, make up to the requirement of optical power budget, solve
Cause optical power budget deficiency budgetary request using existing optical power adjustment mechanism in NGPON2 systems.Enter
One step, because wave length shift problem is introduced by being switched on and off emitting laser, so using
The mode of image intensifer is switched on and off to replace being switched on and off the original-party of ONU emitting lasers
Formula, ONU emitters is constantly in stable output state, it is up can effectively to solve ONU
Emitter opens the wave length shift problem brought during shut-off.
Brief description of the drawings
Fig. 1 is the structural representation for the PCU Power Conditioning Unit that first embodiment of the invention provides；
Fig. 2 is the flow chart for the power regulating method that second embodiment of the invention provides；
Fig. 3 is the setting schematic diagram for the PCU Power Conditioning Unit that third embodiment of the invention provides；
Fig. 4 is the setting schematic diagram for the PCU Power Conditioning Unit that fourth embodiment of the invention provides；
Fig. 5 is the flow chart for the power regulating method that fifth embodiment of the invention provides.
Embodiment
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
Clearly and completely describing, it is clear that described embodiment is part of the embodiment in the present invention, and
The embodiment being not all of.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
Further annotation explanation is now made to the present invention by way of embodiment combination accompanying drawing.
First embodiment：
Fig. 1 is the structural representation for the PCU Power Conditioning Unit that first embodiment of the invention provides, can by Fig. 1
Know, in the present embodiment, PCU Power Conditioning Unit 1 provided by the invention includes：Control module 11, light are put
Big device 12 and optical attenuator 13, in addition to for exporting the optical network unit 14 of transmitting light, wherein,
Control module 11, for receiving the regulating command of optical network unit 14, controlled according to regulating command
Image intensifer 12 and optical attenuator 13 work；
Image intensifer 12, under the control of control module 11, the transmitting light to optical network unit 14
Luminous power amplification is carried out, image intensifer 12 carries out non-peer to the flashlight in transmitting light and Crosstalk and put
Greatly；
Optical attenuator 13, under the control of control module 11, the transmitting light to optical network unit 14
Optical power attenuation is carried out, optical attenuator 13 carries out decay at the same level to flashlight in transmitting light and Crosstalk.
In certain embodiments, the optical network unit 14 in above-described embodiment is used to judge that it launches light work(
Rate meets standard requirement, and regulating command, control are sent to control module 11 according to light path and device loss
Module 11 is used to generate the first control instruction, and control image intensifer 12 amplifies luminous power.In practical application
In, optical network unit 14 judges that it launches whether luminous power meets standard requirement, and generation first judges knot
Fruit, corresponding, regulating command judges that it launches whether luminous power meets standard requirement including optical network unit
The first judged result；If the first judged result meets that standard will for the transmitting luminous power of optical network unit
Ask, control module 11 is used to generate the first control instruction according to light path and device loss, controls light amplification
Device 12 amplifies luminous power.In actual applications, optical network unit judges that it launches whether luminous power meets
Requirement of the standard to transmitting luminous power, the first judged result is generated according to judged result, passes through regulating command
First judged result is sent to control module 11 and sends regulating command, if the transmitting light of optical network unit
Power meets standard requirement, and the first judged result meets that standard will for the transmitting luminous power of optical network unit
Ask, control module 11 is used to generate the first control instruction according to light path and device loss, controls light amplification
Device amplifies luminous power, for example, optical network unit provides light path and device loss is N, control module 11
Control image intensifer amplification luminous power Ndb.
In certain embodiments, the optical network unit 14 in above-described embodiment is additionally operable to judge that it launches light
Power is unsatisfactory for standard requirement, launches luminous power and standard requirement, light path and device loss to control according to it
Molding block 11 sends regulating command, and control module is used to generate the second control instruction, controls image intensifer
12 amplification luminous powers.A upper embodiment is accepted, if the first judged result is the transmitting light work(of optical network unit
Rate is unsatisfactory for standard requirement, transmitting luminous power and standard requirement of the regulating command also including optical network unit；
Control module 11 is additionally operable to according to the requirement of the transmitting luminous power and standard of optical network unit, light path and device
Loss the second control instruction of generation, control image intensifer 12 amplify luminous power.In actual applications, light
NE judges that it launches whether luminous power meets requirement of the standard to transmitting luminous power, ties according to judgement
Fruit generates the first judged result, and the first judged result is sent into control module 11 by regulating command and sent out
Regulating command is sent, if the first judged result is unsatisfactory for standard requirement for the transmitting luminous power of optical network unit,
Transmitting luminous power and standard requirement, control module 11 of the regulating command also including optical network unit are additionally operable to
Referred to according to the requirement of the transmitting luminous power and standard of optical network unit, light path and the control of device loss generation second
Order, control image intensifer 12 amplifies luminous power, such as optical network unit provides light path and device loss Ndb,
Optical network unit judges that it launches luminous power criterion distance difference Mdb, and control module 11 controls light amplification
Device amplifies luminous power (N+M) db.
In certain embodiments, the optical network unit 14 in above-described embodiment is used to judge in transmitting light
Crosstalk is not reaching to standard requirement, then is required according to standard, and regulating command is sent to control module 11,
Control module 11 is used to generate the 3rd control instruction, and control optical attenuator 13 carries out luminous power to transmitting light
Decay；Optical network unit 14 is additionally operable to judge that flashlight luminous power is not reaching in the transmitting light after decaying
Standard requirement, then according to the luminous power after decay, light path and device loss, send to control module 11
Regulating command, control module 11 are used to generate the 4th control instruction, and control image intensifer 12 amplifies light work(
Rate.In actual applications, optical network unit 14 judges whether its Crosstalk launched in light meets standard
It is required that the second judged result of generation, corresponding, regulating command judges that it launches light including optical network unit
In Crosstalk whether meet standard requirement the second judged result；If the second judged result is in transmitting light
Crosstalk reached standard requirement, then need not decay, if the second judged result for transmitting light in string
Disturb light and be not reaching to standard requirement, regulating command also includes the standard requirement of the Crosstalk in transmitting light, control
Molding block 11 is used to require the 3rd control instruction of generation according to the standard of Crosstalk, controls optical attenuator 13
Optical power attenuation is carried out to transmitting light.In actual applications, optical network unit judges the crosstalk in transmitting light
Light is not reaching to standard requirement, and regulating command, the generation of control module 11 the 3rd are sent to control module 11
Control instruction, control optical attenuator carry out optical power attenuation to transmitting light.In actual applications, decaying
Afterwards, optical network unit also needs to judge the luminous power of flashlight in the transmitting light after decay either with or without reaching
Standard requirement, according to corresponding judged result, regulating command, control module are sent to control module 11
11 the 4th control instructions of generation, control image intensifer amplification luminous power.For example, optical network unit judges hair
The Crosstalk criterion distance difference T penetrated in light, control module 11 generate the 3rd control instruction, control light
Attenuator carries out optical power attenuation T to transmitting light, and hereafter, optical network unit judges the transmitting light after decay
The luminous power criterion distance difference Q of middle flashlight, light path and device loss N, control module 11 generate
4th control instruction, control image intensifer amplification luminous power Q+N.
In certain embodiments, the control module 11 in above-described embodiment is additionally operable to true according to regulating command
Determine the pad value of optical attenuator 13, judge whether pad value exceeds the adjustable range of optical attenuator 13, if
Pad value exceeds the adjustable range of optical attenuator, then according to the adjustable range, light path and device of optical attenuator
Loss the 5th control instruction of generation, adjust the amplification luminous power of image intensifer 12.In actual applications,
Optical network unit judges whether pad value exceeds the tune of optical attenuator it is determined that after the pad value of optical attenuator
Adjusting range, if pad value exceed optical attenuator adjustable range, according to the adjustable range of optical attenuator,
Light path and device loss send regulating command to control module 11, generate the 5th control instruction, control mould
Block 11 controls image intensifer regulating optical power, for example, optical network unit determines that optical attenuator needs to decay
A, judge that pad value A exceeds the adjustable range part B of optical attenuator, light path and device loss N, it is right
Control module 11 sends regulating command, generates the 5th control instruction, and control module 11 controls image intensifer
Value of magnification is adjusted to N-B.
In certain embodiments, the control module 11 in above-described embodiment is used to be given according to optical network unit
The regulating command gone out is turned on and off image intensifer, if desired opens image intensifer, then generates OPEN,
Image intensifer is opened, if desired closes image intensifer, then generates out code, closes image intensifer.
In certain embodiments, the control module 11 in above-described embodiment be used for shut-off image intensifer it
Afterwards, it is additionally operable to generate attenuation instructions, controls the pad value of optical attenuator to adjust to maximum.
Corresponding, the invention provides a kind of optical communication system, and it includes：Optical network unit and this hair
The PCU Power Conditioning Unit of bright offer, the optical network unit in PCU Power Conditioning Unit include light emission component, light
Emitting module connects the image intensifer and/or optical attenuator of PCU Power Conditioning Unit.
In certain embodiments, the control module in PCU Power Conditioning Unit, image intensifer and optical attenuator are adopted
Outside light emission component being arranged on discrete form, or, light emission component is integrated in using integrated form
Within.
Second embodiment：
Fig. 2 is the flow chart for the power regulating method that second embodiment of the invention provides, as shown in Figure 2,
In the present embodiment, power regulating method provided by the invention comprises the following steps：
S201：Control module receives the regulating command of optical network unit, and light amplification is controlled according to regulating command
Device and optical attenuator work；
S202：For image intensifer under the control of control module, the transmitting light to optical network unit carries out light work(
Rate is amplified, and image intensifer carries out non-amplification at the same level to the flashlight in transmitting light and Crosstalk；
S203：For optical attenuator under the control of control module, the transmitting light to optical network unit carries out light work(
Rate decays, and optical attenuator carries out decay at the same level to flashlight in transmitting light and Crosstalk.
In certain embodiments, the power regulating method in above-described embodiment includes：Optical network unit judges
It is launched luminous power and meets standard requirement, and sending regulation to control module according to light path and device loss refers to
Order, control module generate the first control instruction, control image intensifer amplification luminous power.
In certain embodiments, the power regulating method in above-described embodiment includes：Optical network unit judges
It is launched luminous power and is unsatisfactory for standard requirement, launches luminous power and standard requirement, light path and device according to it
Loss sends regulating command to control module, and control module generates the second control instruction, controls image intensifer
Amplify luminous power.
In certain embodiments, the power regulating method in above-described embodiment includes：Optical network unit judges
Crosstalk in transmitting light is not reaching to standard requirement, then is required according to standard, and control module is sent and adjusted
Section instruction, control module generate the 3rd control instruction, and control optical attenuator carries out luminous power to transmitting light and declined
Subtract；Optical network unit judges that flashlight luminous power is not reaching to standard requirement in the transmitting light after decay, then
According to the luminous power after decay, light path and device loss, regulating command is sent to control module, controls mould
Block generates the 4th control instruction, control image intensifer amplification luminous power.
In certain embodiments, the power regulating method in above-described embodiment includes：Control module is according to tune
Section instruction determines the pad value of optical attenuator, judges whether pad value exceeds the adjustable range of optical attenuator,
If pad value exceeds the adjustable range of optical attenuator, according to the adjustable range, light path and device of optical attenuator
Part loss the 5th control instruction of generation, adjust the amplification luminous power of image intensifer.
In certain embodiments, the power regulating method in above-described embodiment includes：Control module is according to tune
Section instruction, judges whether to need to be turned on and off image intensifer, if desired opens image intensifer, then generate
OPEN, image intensifer is opened, if desired closes image intensifer, then generate out code, close light
Amplifier.
In certain embodiments, the power regulating method in above-described embodiment is after image intensifer is turned off,
Also include：Attenuation instructions are generated, control the pad value of optical attenuator to adjust to maximum.
Further annotation explanation is done to the present invention in conjunction with concrete application scene.
In order to reduce upgoing O OB and OOC crosstalk in NGPON2 standards, it is proposed that ONU light work(
Rate regulation mechanism, the mechanism can also realize the isolation of multi-wavelength passage and solve OLT receiver mistakes
Load problem.But the requirement of channel optical power budget is related in NGPON2 standards, realizes ONU light
Power adjustment mechanism may not have also on this point at present using victim way optical power budget as cost
Effective and feasible scheme.The present embodiment is exactly to be directed to this point, gives one kind and realizes ONU luminous powers
The method and device of regulation mechanism, solve and realize optical power budget that ONU optical power adjustments are brought not
Sufficient problem.Also, can also solve what is brought when NGPON2 upstream transmitters are opened by the device
Wave length shift problem, and can make to meet turn-off light power in NGPON2 standards during Transmitter Turn-Off
It is required that.
This patent provides a kind of method and dress for realizing ONU power adjustment mechanisms in NGPON2 systems
Put.The composition of the device includes control circuit, (Variable Optical Attenuator, can darkening by VOA
Attenuator, one kind of optical attenuator) and OA (Optical Amplifier, image intensifer).Control circuit
Function be, receive the regulating commands sent of ONU, and according to instruction control variable optical attenuator and
Image intensifer.Transmitting luminous power of the variable optical attenuator for the ONU that decays, this decay can be to channel
Outer (the OOB, OOC) light intensity of interior light intensity and channel is crosstalk while decayed, like this can be with
It is effective to mitigate cross talk effects, but simultaneously it is also possible that light intensity does not reach wanting for optical power budget in channel
Ask.The function of image intensifer includes：Transmitting luminous power to ONU is amplified, so that ONU
Transmitting luminous power meet the requirements of NGPON2 standards；It can compensate variable to reduce crosstalk outside channel
Decay of the optical attenuator for light intensity in channel, makes up to the requirement of optical power budget；Because wavelength floats
Shifting problem is introduced by being switched on and off emitting laser, so using being switched on and off image intensifer
Mode replace being switched on and off the raw mode of ONU emitting lasers, make ONU emitters one
The straight output state in stabilization, can effectively solve to bring when ONU upstream transmitters open shut-off
Wave length shift problem.It should be noted that the image intensifer used in the present embodiment is to flashlight and crosstalk
Light is not amplification at the same level, and the number of stages of amplification to flashlight is tens times of Crosstalk even more more.
A kind of method for realizing ONU power adjustment mechanisms includes in NGPON2 systems：Control circuit connects
The regulating command that ONU is sent is received, according to instruction adjustment control variable optical attenuator and image intensifer.
Specific control mode is as follows：
Control circuit first controls image intensifer to amplify certain value to ONU transmitting luminous powers, if ONU
Transmitting luminous power can not meet the requirements of NGPON2 standards, can be made by the amplification of image intensifer
Reach standard requirement.If ONU transmitting luminous power has met the requirement of NGPON2 standards, pass through
The amplification of image intensifer：One can compensate light path and device loss, and two can compensate to reduce string outside channel
Decay of the variable optical attenuator for light intensity in channel is disturbed, makes up to the requirement of optical power budget, threeway
Cross being switched on and off to replace that the openings of ONU emitting lasers is turned off and can had of control image intensifer
Effect solves the problems, such as the wave length shift brought during ONU upstream transmitters opening.
Control circuit controls variable optical attenuator to launch ONU the certain value of optical power attenuation, makes channel
(OOB, OOC) light intensity is the requirement that crosstalk meets NGPON2 standards outside, is decayed pre- to luminous power
Influence to be compensated by image intensifer caused by calculating, if desired tune of the value of decay beyond variable optical attenuator
Adjusting range, the regulation model of variable optical attenuator can also be increased indirectly by way of adjusting image intensifer
Enclose.Other, when solving the problems, such as wave length shift, after turning off image intensifer, control circuit control can
Light attenuator is transferred to maximum, can prevent turn-off light power from exceeding NGPON2 standards.
This patent provides a kind of method and dress for realizing ONU power adjustment mechanisms in NGPON2 systems
Put, the composition of device includes control circuit, variable optical attenuator and image intensifer.Preferably, can should
Device is integrated within ONU optical modules, and this mode can make the implementation of ONU power adjustment mechanisms
With more preferable flexibility.The difference for realizing structure according to device has following examples：
3rd embodiment：
As shown in figure 3, ONU PCU Power Conditioning Units are placed on optical module light transmitting group using discrete form
Outside part, OA (Optical Amplifier) is image intensifer in figure, VOA (Variable Optical
Attenuator) it is variable optical attenuator.In figure, control module 11 connects OA12a and VOA13a simultaneously,
Preferably, the image intensifer OA12a of optical module light emission component connection PCU Power Conditioning Unit, optical-fiber network list
The light emission component of member can also connect the optical attenuator VOA13a of PCU Power Conditioning Unit, now, OA12a
Can be that corresponding function is realized using independent equipment with VOA13a.
Fourth embodiment：
As shown in figure 4, ONU PCU Power Conditioning Units are integrated and optical module light transmitting group using integrated form
Within part, integrated mode include but is not limited to space optical coupling, PIC (power integrated circuit,
Power integrated circuit) hybrid integrated, single-chip integration etc., LD (laser diode) is the pole of laser two in figure
Pipe, OA (Optical Amplifier) are image intensifer, VOA (Variable Optical Attenuator)
For variable optical attenuator.In figure, control module 11 connects OA12b and VOA13b simultaneously, it is preferred that
The image intensifer of laser diode LD connection PCU Power Conditioning Unit in optical module light emission component
OA12b, the light emission component of optical network unit can also connect the optical attenuator of PCU Power Conditioning Unit
VOA13b, now, OA12b and VOA13b just need to use circuit element independent or coordinate to realize
Corresponding function.
5th embodiment：
Now with different utilization scenes, the present invention is described further, as shown in figure 5, in this implementation
In example, ONU power regulating methods provided by the invention include：
S501：Control circuit receives the regulating command from ONU；
S502：Control circuit judges whether regulating command is enabled instruction, if so, step S503 is then performed,
If it is not, then perform step S507；
In the present embodiment, enabled instruction refers to the instruction for being turned on and off image intensifer, ONU power
Adjusting means solves the problems, such as wave length shift by being turned on and off image intensifer；Specifically, needing to beat
During the disconnected ONU of on and off emitting laser, ONU sends regulating command, control to PCU Power Conditioning Unit
Circuit controlled after the regulating command that ONU sends is received image intensifer carry out it is corresponding open shut-off, with
Solves the problems, such as the wave length shift brought during ONU upstream transmitters opening.Control circuit turns off image intensifer
Afterwards, ONU sends regulating command to PCU Power Conditioning Unit, and control circuit is in the tune for receiving ONU and sending
Control variable optical attenuator is transferred to maximum after section instruction, to prevent turn-off light power from being marked beyond NGPON2
It is accurate.
S503：Control circuit judges whether to be off the instruction of image intensifer, if so, then performing step
S504, if it is not, then performing step S506；
S504：Control circuit turns off image intensifer；
S505：Control circuit control variable optical attenuator is transferred to maximum；
S506：Control circuit opens image intensifer；
S507：ONU judges to launch whether luminous power meets the requirement of NGPON2 standards, if satisfied, then controlling
Circuit processed performs step S508, if not satisfied, then performing step S509；
In actual applications, ONU PCU Power Conditioning Units are used to reduce upgoing O OB (out of band)
With OOC (out of channel) crosstalk, when ONU transmitting luminous power can meet NGPON2
During the requirement of standard, control circuit only needs the loss for compensating light path and device is brought, when ONU's
When transmitting luminous power is unsatisfactory for the requirement of NGPON2 standards, control circuit is needing amplification ONU hair
While luminous power is penetrated so that meeting standard requirement, it is also necessary to compensate light path and loss that device is brought；
S508：Control circuit control image intensifer amplification transmitting luminous power is to compensate light path and device is brought
Loss；
After the regulating command that ONU is sent is received, control image intensifer amplification transmitting luminous power 5%, with
The loss that compensation light path and device are brought.
S509：Control circuit control image intensifer amplification launches luminous power to meet NGPON2 standards
It is required that and compensation light path and the loss that brings of device；
If ONU transmitting luminous power can not meet the requirement of NGPON2 standards, ONU adjusts to power
Regulating device sends regulating command, and control circuit controls light amplification after the regulating command that ONU sends is received
Device amplification transmitting luminous power, makes up to standard requirement.Afterwards, image intensifer amplification transmitting light work(is controlled
Rate, with the loss for compensating light path and device is brought.
To make outside channel (OOB, OOC) light intensity, i.e. crosstalk meets the requirement of NGPON2 standards,
Control module needs to control variable optical attenuator to be worth ONU transmittings optical power attenuation accordingly, makes satisfaction
The requirement of NGPON2 standards.
S510：ONU judges whether crosstalk meets the requirement of NGPON2 standards, if satisfied, then flow knot
Beam, if not satisfied, then performing step S511；
S511：Control circuit controls variable optical attenuator to be worth ONU transmittings optical power attenuation accordingly,
Make outer (the OOB, OOC) light intensity of channel, i.e. crosstalk meets the requirement of NGPON2 standards；
S512：ONU judges that variable optical attenuator (OOB, OOC) light intensity outside attenuation channel is gone here and there
After disturbing, whether light intensity can reach the requirement for launching luminous power in NGPON2 standards in channel.If it is not,
Step S513 is then performed, if so, then flow terminates；
S513：ONU sends regulating command to PCU Power Conditioning Unit, and control circuit is sent receiving ONU
Regulating command after control image intensifer amplification transmitting luminous power be allowed to require to launch in NGPON2 standards
The requirement of luminous power.
In summary, by the implementation of the present invention, following beneficial effect at least be present：
The invention provides a kind of regulation dress including control circuit, variable optical attenuator and image intensifer
Put, control circuit receives the regulating commands sent of ONU, and according to instruction control variable optical attenuator and
Image intensifer, transmitting luminous power of the variable optical attenuator for the ONU that decays, this decay can be to channel
Outer (the OOB, OOC) light intensity (i.e. crosstalk) of interior light intensity and channel while decayed, such words
Cross talk effects can effectively be mitigated, but simultaneously it is also possible that light intensity does not reach optical power budget in channel
It is required that the transmitting luminous power that the function of image intensifer includes to ONU is amplified, so that ONU
Transmitting luminous power meet the requirements of NGPON2 standards, can compensate variable to reduce crosstalk outside channel
Decay of the optical attenuator for light intensity in channel, makes up to the requirement of optical power budget, solves
Cause optical power budget deficiency budgetary request using existing optical power adjustment mechanism in NGPON2 systems.
Further, because wave length shift problem is introduced by being switched on and off emitting laser, institute
Come the original instead of being switched on and off ONU emitting lasers in a manner of using image intensifer is switched on and off
Beginning mode, ONU emitters is constantly in stable output state, can effectively solve ONU
Upstream transmitter opens the wave length shift problem brought during shut-off.
It the above is only the embodiment of the present invention, any formal limit not done to the present invention
Make, every any simple modification made according to technical spirit of the invention to embodiment of above, be equal
Change, combination or modification, still fall within the protection domain of technical solution of the present invention.
Claims (16)
- A kind of 1. power regulating method for optical network unit, it is characterised in that including：Control module receives the regulating command of optical network unit, and image intensifer is controlled according to the regulating command Worked with optical attenuator；Under the control of the control module, the transmitting light to the optical network unit enters the image intensifer Row luminous power is amplified, and the image intensifer carries out non-peer to the flashlight in the transmitting light and Crosstalk Amplification；Under the control of the control module, the transmitting light to the optical network unit enters the optical attenuator Row optical power attenuation, the optical attenuator carry out peer and declined to flashlight in the transmitting light and Crosstalk Subtract.
- 2. power regulating method as claimed in claim 1, it is characterised in that including：The optical-fiber network Its transmitting luminous power of unit judges meets standard requirement, according to light path and device loss to the control module Regulating command is sent, the control module generates the first control instruction, controls the image intensifer amplification light Power.
- 3. power regulating method as claimed in claim 2, it is characterised in that also include：The light net Its transmitting luminous power of network unit judges is unsatisfactory for standard requirement, required according to its transmitting luminous power and standard, Light path and device loss send regulating command, the control of control module generation second to the control module Instruction, control the image intensifer amplification luminous power.
- 4. power regulating method as claimed in claim 1, it is characterised in that also include：The light net Crosstalk in network unit judges transmitting light is not reaching to standard requirement, then is required according to standard, to described Control module sends regulating command, and the control module generates the 3rd control instruction, controls the optical attenuation Device carries out optical power attenuation to transmitting light；The optical network unit judges flashlight in the transmitting light after decay Luminous power is not reaching to standard requirement, then according to the luminous power after decay, light path and device loss, to institute State control module and send regulating command, the control module generates the 4th control instruction, controls the light to put Big device amplification luminous power.
- 5. power regulating method as claimed in claim 1, it is characterised in that also include：The control Module determines the pad value of the optical attenuator according to regulating command, judges whether the pad value exceeds institute The adjustable range of optical attenuator is stated, if the pad value exceeds the adjustable range of the optical attenuator, root The 5th control instruction is generated according to the adjustable range, light path and device loss of the optical attenuator, described in regulation The amplification luminous power of image intensifer.
- 6. the power regulating method as described in any one of claim 1 to 5, it is characterised in that also include： The control module judges whether to need to be turned on and off image intensifer, if desired beaten according to regulating command The image intensifer is driven, then generates OPEN, opens the image intensifer, if desired closes the light Amplifier, then out code is generated, close the image intensifer.
- 7. power regulating method as claimed in claim 6, it is characterised in that turning off the light amplification After device, in addition to：Attenuation instructions are generated, control the pad value of the optical attenuator to adjust to maximum.
- A kind of 8. PCU Power Conditioning Unit for optical network unit, it is characterised in that including：For exporting Launch optical network unit, control module, image intensifer and the optical attenuator of light；Wherein,The control module, for receiving the regulating command of the optical network unit, referred to according to the regulation Order controls the image intensifer and optical attenuator work；The image intensifer, under the control of the control module, to the hair of the optical network unit Penetrate light and carry out luminous power amplification, the image intensifer is carried out to the flashlight in the transmitting light and Crosstalk Non- amplification at the same level；The optical attenuator, under the control of the control module, to the hair of the optical network unit Penetrate light and carry out optical power attenuation, the optical attenuator carries out same to flashlight in the transmitting light and Crosstalk Level decay.
- 9. PCU Power Conditioning Unit as claimed in claim 8, it is characterised in that the optical network unit is used In judge its launch luminous power meet standard requirement, the control module is sent out according to light path and device loss Regulating command is sent, the control module is used to generate the first control instruction, controls the image intensifer to amplify Luminous power.
- 10. PCU Power Conditioning Unit as claimed in claim 9, it is characterised in that the optical-fiber network list Member is additionally operable to judge that it is launched luminous power and is unsatisfactory for standard requirement, launches luminous power according to it and standard will Ask, light path and device loss are used to generate to control module transmission regulating command, the control module Second control instruction, control the image intensifer amplification luminous power.
- 11. PCU Power Conditioning Unit as claimed in claim 8, it is characterised in that the optical-fiber network list Member is used to judge that the Crosstalk in transmitting light to be not reaching to standard requirement, then is required according to standard, to described Control module sends regulating command, and the control module is used to generate the 3rd control instruction, controls the light Attenuator carries out optical power attenuation to transmitting light；The optical network unit is additionally operable to judge the transmitting after decay Flashlight luminous power is not reaching to standard requirement in light, then according to the luminous power after decay, light path and device Loss, regulating command being sent to the control module, the control module is used to generate the 4th control instruction, Control the image intensifer amplification luminous power.
- 12. PCU Power Conditioning Unit as claimed in claim 8, it is characterised in that the control module For determining the pad value of the optical attenuator according to regulating command, judge whether the pad value exceeds institute The adjustable range of optical attenuator is stated, if the pad value exceeds the adjustable range of the optical attenuator, root The 5th control instruction is generated according to the adjustable range, light path and device loss of the optical attenuator, described in regulation The amplification luminous power of image intensifer.
- 13. the PCU Power Conditioning Unit as described in any one of claim 8 to 12, it is characterised in that institute State control module to be additionally operable to according to regulating command, judge whether to need to be turned on and off image intensifer, if needing The image intensifer is opened, then generates OPEN, opens the image intensifer, if desired closes institute Image intensifer is stated, then generates out code, closes the image intensifer.
- 14. PCU Power Conditioning Unit as claimed in claim 13, it is characterised in that the control module For after the image intensifer is turned off, being additionally operable to generate attenuation instructions, the optical attenuator is controlled Pad value is adjusted to maximum.
- 15. a kind of optical communication system, it is characterised in that including any one of such as claim 8 to 14 institute The PCU Power Conditioning Unit stated, the optical network unit in the PCU Power Conditioning Unit include light emission component, institute State image intensifer and/or optical attenuator that light emission component connects the PCU Power Conditioning Unit.
- 16. optical communication system as claimed in claim 15, it is characterised in that the power adjusting dress Control module, image intensifer and optical attenuator in putting are arranged on the light emission component using discrete form Outside, or, it is integrated in using integrated form within the light emission component.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284997.7A CN107342822A (en) | 2016-04-29 | 2016-04-29 | Power regulating method and device, optical communication system for optical network unit |
| PCT/CN2016/089916 WO2017185531A1 (en) | 2016-04-29 | 2016-07-13 | Power backoff method and device for optical network unit, and optical communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284997.7A CN107342822A (en) | 2016-04-29 | 2016-04-29 | Power regulating method and device, optical communication system for optical network unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107342822A true CN107342822A (en) | 2017-11-10 |
Family
ID=60160662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610284997.7A Pending CN107342822A (en) | 2016-04-29 | 2016-04-29 | Power regulating method and device, optical communication system for optical network unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107342822A (en) |
| WO (1) | WO2017185531A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401885A (en) * | 2019-08-19 | 2019-11-01 | 深圳市双翼科技股份有限公司 | A kind of optical power control system in PON communication |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265240C (en) * | 2002-07-18 | 2006-07-19 | 华为技术有限公司 | Low-noise variable-gain optical amplifier |
| JP4633664B2 (en) * | 2006-03-24 | 2011-02-16 | 富士通株式会社 | Optical switch system |
| CN102307068B (en) * | 2011-06-24 | 2015-04-01 | 武汉光迅科技股份有限公司 | Method for locking Raman gains of target and Raman OFA (optical fiber amplifier) |
| CN103512599B (en) * | 2013-09-27 | 2017-01-04 | 武汉理工大学 | Vast capacity fiber grating sensing system based on optical amplification repeater |
-
2016
- 2016-04-29 CN CN201610284997.7A patent/CN107342822A/en active Pending
- 2016-07-13 WO PCT/CN2016/089916 patent/WO2017185531A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401885A (en) * | 2019-08-19 | 2019-11-01 | 深圳市双翼科技股份有限公司 | A kind of optical power control system in PON communication |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017185531A1 (en) | 2017-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE602004001078T2 (en) | Optical amplifier with control functions of the pump light, and optical transmission system using this amplifier | |
| CN108834005B (en) | Passive optical fiber network system with adjustable power and control method thereof | |
| CN103139670B (en) | Passive optical network and uplink and downlink optical signal transmitting method coexists | |
| CN107666354A (en) | Poewr control method and system and optical line terminal and optical network unit | |
| CN204761440U (en) | Overlength is apart from being bare transmission system | |
| CN104539370A (en) | Laser and optical module | |
| CN106230501A (en) | Laser diode launches optical power adjusting method, Apparatus and system | |
| CN109040866B (en) | Power-adjustable optical network unit terminal and control method thereof | |
| CN107342822A (en) | Power regulating method and device, optical communication system for optical network unit | |
| CN103002358B (en) | optical network unit of passive optical network and control method thereof | |
| WO2010045981A1 (en) | Optical network amplifier node and method of channel power depletion compensation | |
| CN101416428B (en) | Method for regulating osnr in a fiber optic communication line using raman amplification | |
| Pecci et al. | Design of submarine “open” cables | |
| CN104410452B (en) | A kind of long range coherent optical communication system transmission performance optimization method | |
| EP2932629A1 (en) | Method of configuring an optical communication network configured for co-propagating raman amplification and an optical communication network element | |
| CN101141222B (en) | Device and method for implementing photosignal waveform generation | |
| CN105323005B (en) | A kind of transmission performance optimization method and apparatus | |
| US9509430B2 (en) | Apparatus for optical signal amplification | |
| CN106918972A (en) | Aowc | |
| CN206618934U (en) | Aowc | |
| CN106936509A (en) | A kind of Raman transient effect control method and device | |
| CN106160869A (en) | A kind of optical network system, cold joint optical fiber attenuation union joint device and method | |
| DE102004052883A1 (en) | Compensation of gain fluctuations of a multi-stage optical amplifier | |
| Ramaswami et al. | Analysis of effective power budget in optical bus and star networks using erbium-doped fiber amplifiers | |
| KR19990034429A (en) | Bidirectional Fiber Optic Amplifier Using Isolators |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171110 |