CN102136869A - Automatic optical distribution frame, and calibration method and system thereof - Google Patents
Automatic optical distribution frame, and calibration method and system thereof Download PDFInfo
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- CN102136869A CN102136869A CN2011100691824A CN201110069182A CN102136869A CN 102136869 A CN102136869 A CN 102136869A CN 2011100691824 A CN2011100691824 A CN 2011100691824A CN 201110069182 A CN201110069182 A CN 201110069182A CN 102136869 A CN102136869 A CN 102136869A
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Abstract
The embodiment of the invention provides an automatic optical distribution frame, and a calibration method and a calibration system thereof, which relate to the field of communication. The complexity of a micro-electro-mechanical system (MEMS) micro mirror device is reduced, the cost of the automatic optical distribution frame (AODF) is reduced, and the calibration accuracy of the automatic optical distribution frame is improved. The method comprises the following steps of: establishing connection between an input optical fiber and an output optical fiber according to a connection instruction transmitted by a fiber management system, wherein one end of the input optical fiber is connected with an optical line terminal, and one end of the output optical fiber is connected with an optical network unit; and calibrating the connection between the input and output optical fibers according to an insertion loss value of an optical fiber link consisting of the input and output optical fibers. The embodiment of the invention is used for the calibration of the MEMS AODF.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of optical fiber automatic wiring frame and calibration steps and system.
Background technology
Optical fiber has that bandwidth capacity is big, loss is little, the reliability advantages of higher, is the desirable transmission medium of realizing the high-capacity and high-speed transmission, mainly is deployed in backbone, MAN originally, along with the continuous lifting of user bandwidth demand, constantly extends to the user now.Optical access network be with optical fiber as transmission medium, with the user access network of light as information carrier, along with the scale of optical access network is disposed, operator need manage magnanimity optical fiber.
Optical fiber automatic wiring frame (Automated/Automatic Optical DistributionFrame AODF) can carry out the distribution operation automatically, distribution weak point consuming time, and it is little to take up room, thereby reduces the O﹠M cost of operator greatly.
MEMS (micro electro mechanical system) (Micro-Electro-Mechanical System, MEMS) technology is to realize the mainstream technology of big capacity AODF, its operation principle be deflection angle by control MEMS micro-reflector with the control light path, thereby realize interconnection between the optical fiber.Inserting loss is the key technical index of AODF, realizes deflection angle that AODF needs accurate control MEMS micro-reflector with accurate optical system for alignment with the MEMS technology, and maintaining a long-term stability property, could obtain low insertion loss.
The current method that the MEMS micro-reflector is controlled has two kinds of open loop control and closed-loop controls.
Open-cycle controller directly applies with the corresponding input signal of the deflection angle of micro-reflector the MEMS micro-reflector and drives the deflection angle that micro-reflector rotates or be torqued into appointment, but because MENS long term device work meeting causes the deflection angle of micro-reflector to drift about, thereby make free space light path change generation misalignment and the insertion loss that has increased AODF.
Closed loop controller is adjusted control signal according to feedback signal and is realized accurate control to MEMS micro-reflector deflection angle, have precision height, advantage that dynamic characteristic is good, stable, but for small MEMS micro-reflector, obtaining of feedback signal is difficult point.At present feedback signal obtained two kinds of methods:
1, angular transducer is set in the MEMS micro-mirror device and realizes the angle measurement function, the deflection angle of micro-reflector is fed back to controller in real time.But this mode has increased the complexity of MEMS micro-mirror device, has improved the cost of MEMS micro-mirror device, thereby has increased the cost of AODF.
2, in the light Cross module of AODF, increase optical coupler and photodetector, to export light and be divided into two-way, one the tunnel is coupled to output optical fibre as flashlight, one the tunnel delivers to photodetector as sensed light signal, and photodetector becomes the signal of telecommunication with sensed light signal and feeds back to the MEMS chip controller.But this mode has increased optical device, thereby and because of the complexity that has increased the light Cross module has improved packaging cost, cause the AODF cost to increase, because flashlight is told a part as detection light, increased the insertion loss simultaneously.
Summary of the invention
Embodiments of the invention provide a kind of optical fiber automatic wiring frame and calibration steps and system, reduce the complexity of MEMS micro-mirror device, reduce the AODF cost, have improved the calibration accuracy of optical fiber automatic wiring frame.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, provide a kind of optical fiber automatic wiring frame calibration steps, comprising:
According to the link order that optical fibre management system issues, set up the connection between input optical fibre and the output optical fibre, an end of wherein said input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit;
The insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre is calibrated the connection between described input optical fibre and the described output optical fibre.
On the one hand, provide a kind of optical fiber automatic wiring frame, comprising:
Controller, optical cross connect module, at least one input optical fibre and at least one output optical fibre; Wherein, an end of described input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit;
Described controller is used for the link order that issues according to optical fibre management system, exports first control signal and gives described optical cross connect module; Simultaneously, the insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre is exported second control signal and is given described optical cross connect module;
Described optical cross connect module is used for setting up the connection between input optical fibre and the output optical fibre according to described first control signal; According to described second control signal, the connection between described input optical fibre and the described output optical fibre is calibrated.
On the one hand, provide a kind of optical fiber automatic wiring frame calibration system, comprising: optical fibre management system and optical fiber automatic wiring frame;
Described optical fibre management system is used to send link order to described optical fiber automatic wiring frame, and the connection between input optical fibre and the output optical fibre is set up in indication; Wherein, an end of described input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit; The insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre, the output control signal is given described optical fiber automatic wiring frame;
Described optical fiber automatic wiring frame is used for setting up the connection between input optical fibre and the output optical fibre according to described link order; Simultaneously, when the insertion loss value of the optical fiber link of forming when described input optical fibre and described output optical fibre surpasses pre-set threshold, the connection between described input optical fibre and the described output optical fibre is calibrated according to described control signal.
On the one hand, provide a kind of optical fiber automatic wiring frame calibration system, comprising: Optical Time Domain Reflectometer, Element management system or OSS and optical fiber automatic wiring frame;
Described Optical Time Domain Reflectometer, one end is connected with described Element management system or OSS, the other end is connected with described optical fiber automatic wiring frame, be used to test the optical fiber link between input optical fibre and the output optical fibre, and described test data is reported described Element management system or OSS; One end of wherein said input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit;
Described Element management system or OSS are used for analyzing according to described test data, obtain the insertion loss of the fibre circuit of described input optical fibre and described output optical fibre composition; And described insertion loss reported described optical fiber automatic wiring frame;
Described optical fiber automatic wiring frame is used for the insertion loss value according to the optical fiber link of described input optical fibre and described output optical fibre composition, and the connection between described input optical fibre and the described output optical fibre is calibrated.
MEMS (micro electro mechanical system) optical fiber automatic wiring frame and calibration steps and system that the embodiment of the invention provides according to the link order that optical fibre management system issues, set up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, do not change the internal structure of original AODF, thereby under the prerequisite of close-loop feedback control, reduced the complexity of MEMS micro-mirror device, reduce the cost of AODF, improved the calibration accuracy of AODF.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the AODF calibration steps that Fig. 1 provides for the embodiment of the invention one;
Fig. 2 is the structural representation of the AODF calibration system of the embodiment of the invention two;
The schematic flow sheet of the AODF calibration steps that Fig. 3 provides for the embodiment of the invention two;
Fig. 4 is the structural representation of the AODF calibration system of the embodiment of the invention three;
The schematic flow sheet of the AODF calibration steps that Fig. 5 provides for the embodiment of the invention three;
Fig. 6 is the structural representation of the AODF of the embodiment of the invention four;
Another structural representation of the AODF that Fig. 7 provides for the embodiment of the invention four.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one
The optical fiber automatic wiring frame calibration steps that the embodiment of the invention one provides, as shown in Figure 1, this method step comprises:
S101, optical fiber automatic wiring frame are set up the connection between input optical fibre and the output optical fibre according to the link order that optical fibre management system issues, and wherein an end of input optical fibre links to each other with optical line terminal, and an end of output optical fibre links to each other with optical network unit.
Concrete, AODF is according to FMS (Fiber Management System, optical fibre management system) link order that issues, search input optical fibre and connect the corresponding required deflection angle of MEMS micro-reflector with output optical fibre, calculate control signal according to this deflection angle, control MEMS micro-reflector rotates to the regulation deflection angle, sets up the connection between input optical fibre and the output optical fibre.Perhaps, AODF searches input optical fibre and connects corresponding control signal with output optical fibre according to the link order that FMS issues, the output control signal, and control MEMS micro-reflector rotates to the regulation deflection angle, sets up the connection between input optical fibre and the output optical fibre
The insertion loss value of the optical fiber link that S102, optical fiber automatic wiring frame form according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.
Further, this insertion loss value can be by OLT (Optical Line Terminal, optical line terminal) or EMS (Element Management System, Element management system) or OSS (Operation Support System, OSS) or FMS calculate according to the luminous power of ONU (Optical Network Unit, optical network unit) and OLT and obtain.Also can be to analyze OTDR (Optical TimeDomain Reflector by EMS or OSS, the test data of the optical fiber link that input optical fibre that Optical Time Domain Reflectometer) records and output optical fibre are formed obtains, and wherein this OTDR can or be integrated in OLT for separate equipment and go up or be built in OLT.
In addition, the insertion loss value of the optical fiber link that AODF forms according to input optical fibre and described output optical fibre, the connection between this input optical fibre and the output optical fibre calibrated comprise following dual mode: one, AODF judge that whether the insertion loss value of the optical fiber link that input optical fibre and output optical fibre are formed is above preset threshold; If surpass, then the MEMS micro reflector array that connects this input optical fibre and output optical fibre is calibrated; Two, AODF receives the calibration command that FMS issues, and according to this calibration command, the MEMS micro reflector array that connects this input optical fibre and output optical fibre is calibrated.
The optical fiber automatic wiring frame calibration steps that the embodiment of the invention provides according to the link order that optical fibre management system issues, is set up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, do not change the internal structure of original AODF, thereby under the prerequisite of close-loop feedback control, reduced the complexity of MEMS micro-mirror device, reduce the cost of AODF, improved the calibration accuracy of optical fiber automatic wiring frame.
Embodiment two
The AODF calibration steps that the embodiment of the invention provides describes with reference to figure 2, Fig. 3.Wherein, Fig. 2 is the structural representation of the AODF system of present embodiment method correspondence; Fig. 3 is a present embodiment method step flow chart.
As shown in Figure 2, described AODF 20 comprises light Cross module 203 and MEMS controller 202, the m root input optical fibre that links to each other with OLT 21 is connected with the ONU 24 that n root input optical fibre links to each other by AODF 20, wherein the other end of OLT 21 links to each other with EMS or OSS22, this EMS or OSS 22 are connected with the end of FMS 23, the other end of this FMS 23 is connected with MEMS controller 202 among the AODF 20, and wherein light Cross module 203 comprises MEMS micro reflector array 201.
S301, FMS 23 issue link order to the controller 202 of AODF 20, require m root input optical fibre and n root output optical fibre to connect.
S302, controller 202 are found required deflection angle value or control signal (first control signal) value of MEMS micro reflector array 201 corresponding micro-reflectors when setting up these two optical fiber connections in the demarcation information in advance of storage inside, calculate control signal value according to this deflection angle value then or directly according to control signal value, the output control signal is given MEMS micro reflector array 201, drive the deflection angle that corresponding micro-reflector rotates or be torqued into appointment, thereby set up the interconnection between m root input optical fibre and the n root output optical fibre.
The OLT 21 that the ONU 24 that S303, n root output optical fibre are connected is connected to m root input optical fibre sends the luminous power of this ONU 24, as emission luminous power and/or received optical power.
S304, OLT 21 are according to the luminous power of self, as launch luminous power and/or received optical power, and emission luminous power and/or the received optical power of the ONU 24 that receives, calculate the insertion loss of the optical fiber link that m root input optical fibre and n root output optical fibre form.
S305, OLT 21 should insert loss and send to FMS23 or directly send to FMS 23 by EMS or OSS 22.
S306, FMS 23 judge whether this insertion loss surpasses preset threshold value; Surpass this threshold value if this inserts loss, then FMS 23 sends calibration command to controller 202.
After S307, controller 502 receive this calibration command, according to the optimizing algorithm of its inside or ergodic algorithm etc., calculate control signal (second control signal) and send to MEMS micro reflector array 201, so that MEMS micro reflector array 201 is adjusted the deflection angle of corresponding micro-reflector according to this control signal, realize calibration.
After S308, calibration steps finish, control signal when controller 202 these m root input optical fibres of storage and n root output optical fibre connect and/or insertion loss.
Need to prove, in the present embodiment, insert loss and calculate, in addition, also can calculate by EMS or OSS 22 or FMS 23 by OLT 21.
If calculate the insertion loss by EMS or OSS 22, then above-mentioned steps S303～S305 then is following four steps:
The OLT 21 that the ONU 24 that step 1, n root output optical fibre are connected is connected by m root input optical fibre is to the luminous power of EMS or OSS 22 these ONU 24 of transmission, as emission luminous power and/or received optical power.
The OLT 21 that step 2, m root input optical fibre are connected is to the luminous power of EMS or OSS 22 these OLT 21 of transmission, as emission luminous power and/or received optical power.
Step 3, EMS or OSS 22 calculate the insertion loss of the optical fiber link of m root input optical fibre and n root output optical fibre composition according to ONU 24, OLT 21 emission luminous power and/or received optical power separately.
Step 4, EMS or OSS 22 will insert loss and send to FMS 23.
If calculate the insertion loss by FMS 23, then above-mentioned steps S303～S305 then is following five steps:
The OLT 21 that the ONU 24 that step 1, n root output optical fibre are connected is connected by m root input optical fibre is to the luminous power of EMS or OSS 22 these ONU 24 of transmission, as emission luminous power and/or received optical power.
Step 2, EMS or OSS 22 send to FMS 53 with emission luminous power and/or the received optical power of this ONU 24.
The OLT 21 that step 3, m root input optical fibre are connected is to the luminous power of EMS or OSS 22 transmission OLT 21, as emission luminous power and/or received optical power.
Step 4, EMS or OSS 22 send to FMS 23 with emission luminous power and/or the received optical power of this OLT 21.
Step 5, FMS 23 calculate the insertion loss of the optical fiber link of m root input optical fibre and n root output optical fibre composition according to ONU 24, OLT 21 emission luminous power and/or received optical power separately.
Have again, in the present embodiment, judge that whether insert loss is undertaken by FMS23 above preset threshold value, in addition, also can be undertaken by controller 202.At this moment, above-mentioned steps S306, S307 are following two steps:
Step 1, FMS 23 will insert loss and send to controller 202.
Step 2, controller 202 judge whether this insertion loss surpasses preset threshold value; If inserting loss, this surpasses preset threshold value, then controller 202 calculates according to the optimizing algorithm of its inside or this ergodic algorithm etc., controlled signal (second control signal) also sends to MEMS micro reflector array 201, so that MEMS micro reflector array 201 is adjusted the deflection angle of corresponding micro-reflector according to this control signal, realize calibration.
The AODF calibration steps that the embodiment of the invention provides according to the link order that optical fibre management system issues, is set up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, does not change the internal structure of original AODF, and the MEMS micro-mirror device need not to realize the angle measurement function, reduce the complexity and the cost of MEMS micro-mirror device, thereby reduced the AODF cost.In addition, also need not in AODF, to increase optical power monitoring function and constitute feedback loop, thereby reduced the AODF cost, avoided simultaneously providing the monitoring insertion loss that light signal increases owing to introducing optical coupler.Have again, still carried out online self calibration, can suppress drift, keep the low insertion loss of AODF, improved the calibration accuracy of AODF.
Embodiment three
The AODF calibration steps that the embodiment of the invention provides describes with reference to figure 4, Fig. 5.Wherein, Fig. 4 is the structural representation of the AODF system of present embodiment method correspondence; Fig. 5 is a present embodiment method step flow chart.
S501, FMS 23 issue link order to the controller 202 of AODF 20, require m root input optical fibre and n root output optical fibre to connect.
S502, controller 202 are found required deflection angle value or control signal (first control signal) value of MEMS micro reflector array 201 corresponding micro-reflectors when setting up these two optical fiber connections in the demarcation information in advance of storage inside, calculate control signal value according to the deflection angle value then or directly according to control signal value, the output control signal is given MEMS micro reflector array 201, drive the deflection angle that corresponding micro-reflector rotates or be torqued into appointment, thereby set up the interconnection between m root input optical fibre and the n root output optical fibre.
The optical fiber link that S503, OTDR (Optical Time DomainReflector, Optical Time Domain Reflectometer) 25 these m root input optical fibres of test that are connected with m root input optical fibre and n root output optical fibre are formed obtains test data.
S504, OTDR 25 send to EMS or OSS 22 with this test data.
S505, EMS or OSS 22 obtain the insertion loss of the optical fiber link of m root input optical fibre and n root output optical fibre composition according to this test data.
S506, EMS or OSS 22 should insert loss and send to FMS 23.
S507, FMS 23 judge whether this insertion loss surpasses preset threshold value; Surpass preset threshold value if this inserts loss, then FMS 23 is to controller 202 transmitting control commands.
After S508, controller 202 receive control command, according to the optimizing algorithm of its inside or ergodic algorithm etc., calculate control signal (second control signal) and send to MEMS micro reflector array 201, so that MEMS micro reflector array 201 according to the deflection angle of the corresponding micro-reflector of this control signal adjustment, is realized calibration.
After S509, calibration steps finish, control signal when controller 202 these m root input optical fibres of storage and n root output optical fibre connect and/or insertion loss.
Need to prove, in the present embodiment, insert loss and calculate, in addition, also can calculate by controller 202 by FMS 23.At this moment, above-mentioned steps S507, S508 are following two steps:
Step 1, FMS 23 will insert loss and send to controller 202.
Step 2, controller 202 judge whether this insertion loss surpasses preset threshold value; Surpass preset threshold value if insert loss, then controller 202 is according to the optimizing algorithm of its inside or ergodic algorithm etc., calculate control signal (second control signal) and send to MEMS micro reflector array 201, so that MEMS micro reflector array 201 according to the deflection angle of the corresponding micro-reflector of this control signal adjustment, is realized calibration.
Have, as shown in Figure 4, the OTDR in the present embodiment is independent the setting again.In addition, this OTDR also can be integrated in OLT and go up or be built among the OLT, and its calculating of inserting loss is identical with present embodiment with judgement.
The AODF calibration steps that the embodiment of the invention provides according to the link order that optical fibre management system issues, is set up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, does not change the internal structure of original AODF, and the MEMS micro-mirror device need not to realize the angle measurement function, reduce the complexity and the cost of MEMS micro-mirror device, thereby reduced the AODF cost.In addition, also need not in AODF, to increase optical power monitoring function and constitute feedback loop, thereby reduced the AODF cost, avoided simultaneously providing the monitoring insertion loss that light signal increases owing to introducing optical coupler.Have again, still carried out online self calibration, can suppress drift, keep the low insertion loss of AODF, improved the calibration accuracy of AODF.
Embodiment four
The optical fiber automatic wiring frame 60 that the embodiment of the invention four provides as shown in Figure 6, comprising:
Optical cross connect module 602 is used for according to first control signal, sets up the connection between input optical fibre 603 and the output optical fibre 604; According to second control signal, the connection between this input optical fibre and the output optical fibre is calibrated.
The AODF that the embodiment of the invention provides according to the link order that optical fibre management system issues, sets up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, do not change the internal structure of original AODF, thereby under the prerequisite of close-loop feedback control, reduced the complexity of MEMS micro-mirror device, reduce the cost of AODF, improved the calibration accuracy of AODF.
Further, controller 601 when the insertion loss value of the optical fiber link that specifically is used for determining that input optical fibre 603 and output optical fibre 604 are formed surpasses pre-set threshold, is exported second control signal and is given optical cross connect module 602.Perhaps, controller 601, when the insertion loss value that specifically is used for the optical fiber link formed when input optical fibre 603 and output optical fibre 604 surpasses pre-set threshold, receive the calibration command that optical fibre management system issues, and export second control signal and give optical cross connect module 602.
In addition, as shown in Figure 7, optical cross connect module 602 comprises MEMS micro reflector array 6021;
This MEMS micro reflector array 6021 is used for the deflection angle according to the relevant micro-reflector of second control signal adjustment MEMS, makes the insertion loss value of the optical fiber link that corresponding input optical fibre 603 and output optical fibre 604 are formed satisfy pre-set threshold.
Embodiment five
The optical fiber automatic wiring frame calibration system that the embodiment of the invention provides as shown in Figure 2, comprising: optical fibre management system 23 and optical fiber automatic wiring frame 20.
Optical fibre management system 23 is used to send link order to optical fiber automatic wiring frame 20, and the connection between input optical fibre and the output optical fibre is set up in indication; Wherein, an end of input optical fibre links to each other with optical line terminal 21, and an end of output optical fibre links to each other with optical network unit 24; The insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre, the output control signal is given optical fiber automatic wiring frame 20.
Optical fiber automatic wiring frame 20 is used for according to link order, sets up the connection between input optical fibre and the output optical fibre; Simultaneously, when the insertion loss value of the optical fiber link of forming when input optical fibre and output optical fibre surpasses pre-set threshold, the connection between this input optical fibre and the output optical fibre is calibrated according to control signal.Calibrate as deflection angle the corresponding micro-reflector of self MEMS micro reflector array 201.
The AODF calibration system that the embodiment of the invention provides according to the link order that optical fibre management system issues, is set up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, do not change the internal structure of original AODF, thereby under the prerequisite of close-loop feedback control, reduced the complexity of MEMS micro-mirror device, reduce the cost of AODF, improved the calibration accuracy of AODF.
Further, this system also comprises optical line terminal 21.
Another kind of situation is that this system also comprises optical line terminal 21, Element management system or OSS 22; Element management system or OSS 22 1 ends are connected with optical line terminal 21, and the other end is connected with optical fibre management system 23.
Element management system or OSS 22, be used for according to the luminous power of this input optical fibre and the luminous power of output optical fibre, calculate the insertion loss value of the optical fiber link that input optical fibre and output optical fibre form, and should insert loss value and report optical fibre management system 23.
Be that this system also comprises optical line terminal 21 in a kind of situation;
Optical fibre management system 23 specifically is used for the luminous power that reports according to optical line terminal 21, calculates the insertion loss value of the optical fiber link between input optical fibre and the output optical fibre.
In addition, under above-mentioned various situations, optical fibre management system 23, whether the insertion loss value that specifically is used for the optical fiber link of definite input optical fibre and output optical fibre composition surpasses pre-set threshold; If exceed, then export calibration command and give optical fiber automatic wiring frame 20, make optical fiber automatic wiring frame 20 calibrate according to this calibration command.
Embodiment six
The optical fiber automatic wiring frame calibration system that the embodiment of the invention provides as shown in Figure 4, comprising: Optical Time Domain Reflectometer 25, Element management system or OSS 22 and optical fiber automatic wiring frame 20.
Optical Time Domain Reflectometer 25, one end is connected with Element management system or OSS 22, the other end is connected with optical fiber automatic wiring frame 20, be used to test the optical fiber link of forming between input optical fibre and the output optical fibre, and test data is reported Element management system or OSS 22; Wherein, an end of input optical fibre links to each other with optical line terminal 21, and an end of output optical fibre links to each other with optical network unit 24.
Element management system or OSS 22 are used for analyzing according to test data, obtain the insertion loss of the fibre circuit of input optical fibre and output optical fibre composition; And should insert loss and reported optical fiber automatic wiring frame 20.
Optical fiber automatic wiring frame 20 is used for the insertion loss value according to the optical fiber link of input optical fibre and output optical fibre composition, and the connection between this input optical fibre and the output optical fibre is calibrated.Calibrate as deflection angle the corresponding micro-reflector of MEMS micro reflector array.
The AODF calibration system that the embodiment of the invention provides according to the link order that optical fibre management system issues, is set up the connection between input optical fibre and the output optical fibre; Then, the insertion loss value of the optical fiber link of forming according to input optical fibre and output optical fibre is calibrated the connection between this input optical fibre and the output optical fibre.Relative prior art, the required insertion loss value of feedback calibration obtains outside AODF, do not change the internal structure of original AODF, thereby under the prerequisite of close-loop feedback control, reduced the complexity of MEMS micro-mirror device, reduce the cost of AODF, improved the calibration accuracy of AODF.
Further, this system also comprises optical fibre management system 23, and these optical fibre management system 23 1 ends are connected with Element management system or OSS 22, and the other end is connected with optical fiber automatic wiring frame 20.
Optical fibre management system 23 is used to judge whether the insertion loss value of the optical fiber link between input optical fibre and the output optical fibre surpasses pre-set threshold; If surpass, then export calibration command and give optical fiber automatic wiring frame 20, make optical fiber automatic wiring frame 20 calibrate the connection between input optical fibre and the output optical fibre according to this calibration command.Calibrate as deflection angle the corresponding micro-reflector of MEMS micro reflector array.
Perhaps, optical fibre management system 23 just will insert loss and send to AODF 20, be judged by AODF 20, and its process and said method embodiment are similar.
In addition, this Optical Time Domain Reflectometer 25 can be separate equipment, also can be integrated on the optical line terminal 21 or is built in optical line terminal 21.
In addition, in embodiment five and embodiment six, the optical fiber link of forming between OTDR 25 test input optical fibres and the output optical fibre, and after obtaining test data, the analysis that also can further carry out data obtains inserting loss.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (15)
1. an optical fiber automatic wiring frame calibration steps is characterized in that, comprising:
According to the link order that optical fibre management system issues, set up the connection between input optical fibre and the output optical fibre, an end of wherein said input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit;
The insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre is calibrated the connection between described input optical fibre and the described output optical fibre.
2. method according to claim 1, it is characterized in that described insertion loss value is to be calculated according to the luminous power of described optical network unit and described optical line terminal by described optical line terminal or Element management system or OSS or optical fibre management system to obtain.
3. method according to claim 1, it is characterized in that, described insertion loss value is analyzed the test data acquisition of the optical fiber link that input optical fibre that Optical Time Domain Reflectometer records and output optical fibre form by Element management system or OSS, and wherein said Optical Time Domain Reflectometer is separate equipment or is integrated on the optical line terminal or is built in optical line terminal.
4. method according to claim 1 is characterized in that, the insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre is calibrated the connection between described input optical fibre and the described output optical fibre and to be comprised:
Whether the insertion loss value of judging the optical fiber link that described input optical fibre and described output optical fibre are formed surpasses preset threshold; If surpass, then the MEMS (micro electro mechanical system) micro reflector array that connects described input optical fibre and described output optical fibre is calibrated;
Perhaps,
Receive the calibration command that described optical fibre management system issues,, the MEMS (micro electro mechanical system) micro reflector array that connects described input optical fibre and described output optical fibre is calibrated according to described calibration command.
5. an optical fiber automatic wiring frame is characterized in that, comprising:
Controller, optical cross connect module, at least one input optical fibre and at least one output optical fibre; Wherein, an end of described input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit;
Described controller is used for the link order that issues according to optical fibre management system, exports first control signal and gives described optical cross connect module; Simultaneously, the insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre is exported second control signal and is given described optical cross connect module;
Described optical cross connect module is used for setting up the connection between input optical fibre and the output optical fibre according to described first control signal; According to described second control signal, the connection between described input optical fibre and the described output optical fibre is calibrated.
6. optical fiber automatic wiring frame according to claim 5 is characterized in that,
Described controller when the insertion loss value of the optical fiber link that specifically is used for determining that described input optical fibre and described output optical fibre are formed surpasses pre-set threshold, is exported second control signal and is given described optical cross connect module;
Perhaps,
Described controller, when the insertion loss value that specifically is used for the optical fiber link formed when described input optical fibre and described output optical fibre surpasses pre-set threshold, receive the calibration command that described optical fibre management system issues, and export described second control signal and give described optical cross connect module.
7. according to claim 5 or 6 described optical fiber automatic wiring framves, it is characterized in that described optical cross connect module comprises the MEMS (micro electro mechanical system) micro reflector array;
Described MEMS (micro electro mechanical system) micro reflector array, be used for adjusting the deflection angle of the relevant micro-reflector of MEMS (micro electro mechanical system), make the insertion loss value of the optical fiber link between described input optical fibre and the described output optical fibre satisfy pre-set threshold according to described second control signal.
8. an optical fiber automatic wiring frame calibration system is characterized in that, comprising: optical fibre management system and optical fiber automatic wiring frame;
Described optical fibre management system is used to send link order to described optical fiber automatic wiring frame, and the connection between input optical fibre and the output optical fibre is set up in indication; Wherein, an end of described input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit; The insertion loss value of the optical fiber link of forming according to described input optical fibre and described output optical fibre, the output control signal is given described optical fiber automatic wiring frame;
Described optical fiber automatic wiring frame is used for setting up the connection between input optical fibre and the output optical fibre according to described link order; Simultaneously, when the insertion loss value of the optical fiber link of forming when described input optical fibre and described output optical fibre surpasses pre-set threshold, the connection between described input optical fibre and the described output optical fibre is calibrated according to described control signal.
9. system according to claim 8 is characterized in that described system also comprises optical line terminal;
Described optical line terminal, be used to receive the luminous power of the described input optical fibre that is connected with self and the luminous power of the output optical fibre that is connected with described optical network unit, and according to the luminous power of described input optical fibre and the luminous power of described output optical fibre, calculate the insertion loss value of the optical fiber link of described input optical fibre and described output optical fibre composition, and described insertion loss value is reported described optical fibre management system.
10. system according to claim 8 is characterized in that, described system also comprises optical line terminal and Element management system or OSS; Described Element management system or OSS one end are connected with described optical line terminal, and the other end is connected with described optical fibre management system;
Described optical line terminal is used to receive the luminous power of the output optical fibre that is connected with described optical network unit, and the luminous power of self and the luminous power of described output optical fibre are reported described Element management system or OSS;
Described Element management system or OSS, be used for according to the luminous power of described input optical fibre and the luminous power of described output optical fibre, calculate the insertion loss value of the optical fiber link between described input optical fibre and the described output optical fibre, and described insertion loss value is reported described optical fibre management system.
11. system according to claim 8 is characterized in that, described system also comprises optical line terminal;
Described optical line terminal is used to receive the luminous power of the output optical fibre that is connected with described optical network unit, and the luminous power of self and the luminous power of described output optical fibre are reported described optical fibre management system;
Described optical fibre management system specifically is used for the luminous power that reports according to described optical line terminal, calculates the insertion loss value of the optical fiber link between described input optical fibre and the described output optical fibre.
12. arbitrary according to Claim 8-11 described system is characterized in that,
Described optical fibre management system, whether the insertion loss value that specifically is used for the optical fiber link of definite described input optical fibre and described output optical fibre composition surpasses pre-set threshold; If exceed, then export calibration command and give described optical fiber automatic wiring frame, make described optical fiber automatic wiring frame calibrate according to described calibration command.
13. an optical fiber automatic wiring frame calibration system is characterized in that, comprising: Optical Time Domain Reflectometer, Element management system or OSS and optical fiber automatic wiring frame;
Described Optical Time Domain Reflectometer, one end is connected with described Element management system or OSS, the other end is connected with described optical fiber automatic wiring frame, be used to test the optical fiber link between input optical fibre and the output optical fibre, and described test data is reported described Element management system or OSS; One end of wherein said input optical fibre links to each other with optical line terminal, and an end of described output optical fibre links to each other with optical network unit;
Described Element management system or OSS are used for analyzing according to described test data, obtain the insertion loss of the fibre circuit of described input optical fibre and described output optical fibre composition; And described insertion loss reported described optical fiber automatic wiring frame;
Described optical fiber automatic wiring frame is used for the insertion loss value according to the optical fiber link of described input optical fibre and described output optical fibre composition, and the connection between described input optical fibre and the described output optical fibre is calibrated.
14. system according to claim 13 is characterized in that, described system also comprises optical fibre management system, and described optical fibre management system one end is connected with described Element management system or OSS, and the other end is connected with described optical fiber automatic wiring frame;
Described optical fibre management system is used to judge whether the insertion loss value of the optical fiber link between described input optical fibre and the described output optical fibre surpasses pre-set threshold; If surpass, then export calibration command and give described optical fiber automatic wiring frame, make described optical fiber automatic wiring frame calibrate the connection between described input optical fibre and the described output optical fibre according to described calibration command.
15., it is characterized in that described Optical Time Domain Reflectometer is separate equipment or is integrated on the optical line terminal or is built in optical line terminal according to claim 13 or 14 described systems.
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| CN104485989A (en) * | 2014-12-05 | 2015-04-01 | 国家电网公司 | Automatic check system for optical fiber links of intelligent substations |
| CN104485989B (en) * | 2014-12-05 | 2017-07-18 | 国家电网公司 | A kind of intelligent substation optical fiber link automatic checker |
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