CN106452569A - Multi-backup OTDR optical amplification device with shared light source and control method - Google Patents
Multi-backup OTDR optical amplification device with shared light source and control method Download PDFInfo
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- CN106452569A CN106452569A CN201611144348.3A CN201611144348A CN106452569A CN 106452569 A CN106452569 A CN 106452569A CN 201611144348 A CN201611144348 A CN 201611144348A CN 106452569 A CN106452569 A CN 106452569A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a multi-backup OTDR optical amplification device with a shared light source. The device comprises a pump laser combination unit composed of a main control unit, a data collecting and processing unit, a laser control driving unit and N pump lasers, an optical switch control matrix, N*1 optical switches, an optical circulator, an output optical switch and a pump combiner MUX; N 1*2 optical switches are arranged in the optical switch control matrix; N is not smaller than 2; the laser control driving unit comprises a mode selection switch matrix and a laser control driving matrix; N driving units are arranged in the laser control driving matrix; the main control unit is connected with and controls the mode selection switch matrix; the driving units in the laser control driving matrix are separately connected with the corresponding pump lasers in the pump laser combination unit; and the multi-backup OTDR optical amplification device provided by the invention shares the pump lasers to achieve a built-in OTDR function of the optical amplification device, and the backup light source improves the reliability of OTDR.
Description
Technical field
The present invention relates to fiber optic communication field, a kind of common light source used in especially a kind of fiber optic communication field many
The OTDR optical amplification device of backup.
Background technology
Optical time domain reflectometer（OTDR）English full name be Optical Time Domain Reflectometer.OTDR
The precision being backscattering produced by Rayleigh scattering and Fresnel reflection when transmitting in a fiber using optical signal and making
Optoelectronic integration instrument, it is widely used in the maintenance of lightguide cable link, among construction, can carry out fiber lengths, optical fiber
The measurement of transmission attenuation, joint decay and fault location etc..
Long-haul transmission system typically all be unable to do without erbium-doped fiber amplifier, raman optical amplifier or both combinations at this stage
Now therefore to all whom it may concern together constituting etc..Before specific Transmission system is opened, before accessing raman optical amplifier,
General way is to detect the situation of optical fiber in advance with OTDR instrument, confirms joint, after optical fiber attenuation is all normal value,
Image intensifer could be accessed.In the application of long range propagation scene, need during optical communication equipment networking to purchase special OTDR and
Supporting test device, is tested to the optical fiber connecting and is monitored.Optical time domain reflectometer（OTDR）By direct-connected optical fiber or utilization
Specific wavelength light pulse insertion optical fiber is tested, and Test Networking scheme is complicated, and OTDR equipment price is high.Factors above leads to
The complexity that optical-fiber network with monitoring fiber functions is safeguarded is high, high cost.And OTDR equipment belongs to expensive equipment, it is built-in
Laser light source is once damage it is necessary to change OTDR equipment so that optical-fiber network maintenance cost improves further.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, provide a kind of many backups of common light source
OTDR optical amplification device, before optical amplification device works, can first open OTDR mode of operation, to detect the damage of Transmission Fibers
Consumption situation, opens image intensifer mode of operation after confirming Transmission Fibers in order；The present invention reduces the OTDR of costliness sets
Standby, shared pumping laser light source achieves optical amplification device built-in OTDR function, and back up that light source increased OTDR can
By property, spending that but need not be extra；The technical solution used in the present invention is：
A kind of OTDR optical amplification device of many backups of common light source, including：Main control unit, data acquisition process unit, laser
Device controls driver element, the pump laser assembled unit of N number of pump laser composition, photoswitch to control matrix, Nx1 light to open
Pass, optical circulators, output photoswitch, pump combiner MUX；It is provided with N number of 1x2 photoswitch in described photoswitch control matrix；N
≥2；
Laser control driver element includes mode selection switch matrix and laser control drives matrix；Laser control drives
It is provided with N number of driver element in dynamic matrix；Main control unit connects and control model selecting switch matrix；Mode selection switch matrix
N number of outfan connects the N number of driver element controlling laser control to drive in matrix respectively；Laser control drives in matrix
Each driver element connects each corresponding pump laser in the laser instrument assembled unit of Pu respectively；
Photoswitch controls the 1x2 photoswitch in matrix to comprise an input and two selection outfans；Photoswitch controls matrix
Connect and be controlled by main control unit, be connected for switching one of the input of 1x2 photoswitch and two selection outfans；Each
The input of 1x2 photoswitch is corresponding with each pump laser outfan in pump laser assembled unit respectively to be connected；Each
One selection outfan of 1x2 photoswitch is connected with each input of Nx1 photoswitch respectively, each 1x2 photoswitch another
Outfan is selected to be connected with each input of pump combiner MUX respectively；The input of 1x2 photoswitch and a selection outfan
During connection, this 1x2 photoswitch switches to OTDR operation range；The input of 1x2 photoswitch selects outfan to be connected with another
When, this 1x2 photoswitch switches to image intensifer operation range；
Nx1 photoswitch connects and is controlled by main control unit；Nx1 photoswitch includes N number of input and an outfan；
Optical circulators include tri- ports of 1a, 2a, 3a；
Output photoswitch connects and is controlled by main control unit, and output photoswitch includes 1b, 2b input port and 3b output port；
The outfan of Nx1 photoswitch connects the 1a port of optical circulators, and the 2a port of optical circulators connects output photoswitch
1b input port；The 3a port of optical circulators connects the input of data acquisition process unit；Data acquisition process unit
Outfan connect main control unit；
The outfan of pump combiner MUX connects the 2b input port of output photoswitch by isolator；Or there is isolation energy
The outfan of the pump combiner of power is directly connected to export the 2b input port of photoswitch；
The 3b output port of output photoswitch connects Transmission Fibers.
Further,
Main control unit includes interconnective MCU and FPGA controller；FPGA controller connects data acquisition by controlling bus
Unit；The outfan of data acquisition process unit connects FPGA controller by data/address bus；MCU connects respectively and controls light to open
Close the N road 1x2 photoswitch controlling in matrix, output photoswitch and Nx1 photoswitch；MCU is also connected with and controls laser control to drive
Moving cell；FPGA controller connects and controls laser control driver element；
The OTDR optical amplification device of many backups of this common light source includes two kinds of mode of operations；OTDR mode of operation and image intensifer
Mode of operation；
When mode of operation is for OTDR mode of operation, with the pump as OTDR light source in MCU selection laser control driving matrix
Driver element work corresponding to the laser instrument of Pu, and close the driver element of other pump lasers；Simultaneously according to selected by user
Or system default, it is selected as the pump laser of OTDR light source, corresponding for selected pump laser 1x2 photoswitch is switched to
OTDR operation range；The corresponding passage of this selected pump laser in gating Nx1 photoswitch, controls the 1b input of output photoswitch
Port is connected with 3b output port；Meanwhile, this selected pump laser corresponding pattern choosing in switch mode selecting switch matrix
Select switch, the type of drive of this selected pump laser is switched to OTDR impulse ejection mode；Thereafter, according to being surveyed transmission
The length of optical fiber link, the required light pulse amplitude of setting, pulsewidth and sampling number, by data/address bus, institute's setting parameter is passed to
FPGA controller simultaneously starts FPGA controller, and FPGA controller controls the driver element of this selected pump laser so that pumping
Laser instrument output optical pulse signal；This light pulse signal passes sequentially through corresponding 1x2 photoswitch, Nx1 light in optical switch matrix and opens
Pass, optical circulators 1a->2a port, output photoswitch, enter Transmission Fibers；In Transmission Fibers various terminal loss or
Optical fiber damages the Rayleigh scattering brought or Fresnel reflection passes through to export photoswitch and optical circulator 2a->3a port returns to
In digital sampling and processing；Digital sampling and processing receives this scattering/reflected light signal, converts optical signals to the signal of telecommunication
After deliver to FPGA controller and carry out data sampling；FPGA controller sends the data of reading to MCU, after MCU receives data
Carry out data processing, to obtain the testing result of Transmission Fibers link；
When mode of operation is for image intensifer mode of operation, N number of 1x2 photoswitch is switched to image intensifer operation range by MCU, control
The 2b input port of system output photoswitch is connected with 3b output port；Meanwhile, the pattern choosing in switch mode selecting switch matrix
Select switch, all pump laser type of drive are switched to image intensifer Laser Drive mode；Thereafter, MCU checks completely
During sufficient turn on pump condition, each pump laser is controlled to open default pump power.
Further,
Data acquisition process unit includes opto-electric transceiver module, high gain signal amplification module, isolation and the filter being sequentially connected
Wave circuit, A/D convertor circuit, data storage cell；Wherein high gain signal amplification module, A/D convertor circuit, data storage cell
It is controlled by main control unit；
In digital sampling and processing, opto-electric transceiver module receives this scattering/reflected light signal, converts optical signals to telecommunications
Amplify through plus and blowup circuit module after number, be converted to the signal of telecommunication in scope needed for A/D convertor circuit；
Meanwhile, FPGA controller controls A/D convertor circuit to start to sample, and the signal of telecommunication sampling is converted to digital signal
After send data storage cell to, after the completion for the treatment of the scanning of fibre circuit, the number in data storage cell is read in FPGA segmentation
According to, and MCU to is sent the data of reading by data/address bus, MCU carries out data processing after receiving data, and according to set
Put sampling number, FPGA controller constantly executes said process, after the completion for the treatment of all sampling processes, complete acquired in MCU analysis
Portion's data is to obtain the testing result of Transmission Fibers link.
Further,
During OTDR mode of operation, if the selected pump laser i as OTDR light source or its corresponding driver element break down,
Main control unit automatic switchover pump laser and corresponding driver element in a predetermined sequence automatically.
Further,
If the currently selected pump laser i as OTDR light source or its corresponding driver element break down, during automatic switchover
Order according to i+1 to N, 1 to i-1.
Further,
The turn on pump condition meeting is needed during image intensifer mode of operation：Determine that Transmission Fibers state is normal according to testing result, and
OTDR optical amplification device temperature, each pump laser die temperature, these factor of judgment of scattering/reflected light signal power all do not have
Alarm, input optical signal is more than threshold value, and OTDR optical amplification device is in amplifier enabled state.
Further,
In optical circulators, light can only follow 1a->2a->3a direction one-way transmission.
Further,
Optical circulators are replaced with fiber coupler.
It is an advantage of the current invention that：The present invention chooses certain pump laser and shares simultaneously as OTDR light source, not only saves
Save the equipment cost of the OTDR of costliness, and can be with the loss of on-line real time monitoring fibre circuit, triggering alarm in time.Except this
Outside, OTDR common light source still backs up more, and after current OTDR light source breaks down, main control unit can be according to feedback information
The corresponding light source that backs up of setting is OTDR light source, and OTDR detection business will not be interrupted.
Brief description
Fig. 1 is the structure composition schematic diagram of the present invention.
Fig. 2 is the laser control structure of driving unit schematic diagram of the present invention.
Fig. 3 is that the photoswitch of the present invention controls the 1x2 photoswitch schematic diagram in matrix.
Fig. 4 is the main control unit structural representation of the present invention.
Fig. 5 is the data acquisition process cellular construction schematic diagram of the present invention.
Fig. 6 is the flow chart of control method of the present invention.
Specific embodiment
With reference to concrete drawings and Examples, the invention will be further described.
The present invention proposes a kind of OTDR optical amplification device of many backups of common light source, as shown in figure 1, including：Master control list
Unit, data acquisition process unit, laser control driver element, N number of pump laser constitute pump laser assembled unit,
Photoswitch controls matrix, Nx1 photoswitch, optical circulators, output photoswitch, pump combiner MUX；Described photoswitch controls square
It is provided with N number of 1x2 photoswitch in battle array；N≥2；
As shown in Fig. 2 laser control driver element includes mode selection switch matrix and laser control drives matrix；Swash
The control of light device drives in matrix and is provided with N number of driver element；Main control unit connects and control model selecting switch matrix；Model selection
N number of outfan of switch matrix connects the N number of driver element controlling laser control to drive in matrix respectively；Laser control drives
Each driver element in dynamic matrix connects each corresponding pump laser in the laser instrument assembled unit of Pu respectively；
Pump laser can adopt Raman pump laser, and its type is generally semiconductor pump laser, and output laser adopts
Protect folk prescription formula.Pumping wavelength is generally 14xxnm.If second order raman amplifier, pumping wavelength can also be 13xxnm.Pump
Pu laser instrument can also select EDFA pump laser；Raman pump laser and EDFA pump laser broadly fall into semiconductor pump
Pu laser instrument；The present invention may make up the raman optical amplifier with OTDR function or EDFA image intensifer etc.；
Some pump laser in pump laser assembled unit, as common light source, was both used as OTDR light source, also served as
Image intensifer light source；Common light source is any one pump laser in pump laser assembled unit, not refering in particular to property,
It can be any one in pump laser 1～N in pump laser assembled unit；When practical operation, these pumps
Pu laser instrument is to take similar parallel connection implementation, and user can specify a certain pump laser as the laser of OTDR light source
Device, it would however also be possible to employ the option of system default；So when the pump laser that some is done OTDR light source by the first choosing occurs event
After barrier, system automatically switches next pump laser as the laser instrument of OTDR light source, and automatically reports pump laser abnormal
Information, so, built-in OTDR function is unaffected；Pump laser as common light source is all to be all on OTDR light source
Mutually redundant relation.
Photoswitch (Optical Switch, OS) is that one kind has one or more selectable transmission windows, can be to light
Optical signal in transmission line or integrated optical circuit mutually changed or logical operation device.Its most basic form has 1 × 2
Road, 2 × 2 road photoswitches etc..
As shown in figure 3, photoswitch controls the 1x2 photoswitch in matrix to comprise an input and two selection outfans；
Photoswitch controls matrix to connect and be controlled by main control unit, for switching the input of 1x2 photoswitch and two selection outfans
One of connect；The input of each 1x2 photoswitch respectively with pump laser assembled unit in each pump laser outfan
Corresponding connection；One selection outfan of each 1x2 photoswitch is connected with each input of Nx1 photoswitch respectively, each 1x2 light
Another of switch selects outfan to be connected with each input of pump combiner MUX respectively；
When the input of 1x2 photoswitch is connected with a selection outfan 1, this 1x2 photoswitch switches to OTDR operation range；
When the input of 1x2 photoswitch selects outfan 2 to be connected with another, this 1x2 photoswitch switches to image intensifer operation range；
Nx1 photoswitch connects and is controlled by main control unit；Nx1 photoswitch includes N number of input and an outfan；N × 1 light is opened
Close the function for realizing backup more than OTDR light source；Pump laser and N × 1 are determined according to Transmission system demand by main control unit
The respective path gating of photoswitch is as the pump laser of OTDR light source；
Optical circulators include tri- ports of 1a, 2a, 3a；In optical circulators, light can only follow 1a->2a->3a direction is unidirectional
Transmission；In actual applications, optical circulators can also be replaced with fiber coupler；
Output photoswitch connects and is controlled by main control unit, and output photoswitch includes 1b, 2b input port and 3b output port；Defeated
Go out photoswitch to be used for switching OTDR mode of operation and image intensifer mode of operation；
The outfan of Nx1 photoswitch connects the 1a port of optical circulators, and the 2a port of optical circulators connects output photoswitch
1b input port；The 3a port of optical circulators connects the input of data acquisition process unit；Data acquisition process unit
Outfan connect main control unit；
Pump combiner MUX is used for will be a branch of for the Laser synthesizing of the pump laser output of different wave length；Pump combiner MUX mono-
As be film filter type, now need to connect an isolator behind；The outfan of pump combiner MUX passes through isolation
Device connects the 2b input port of output photoswitch；Pump combiner MUX can also be isolation polarized pump bundling device, for synthesizing
The laser power of phase co-wavelength, has the ability of isolation reflected signal simultaneously, prevents reflected signal from feeding back to laser resonant cavity
The output stability of middle impact pump laser, is now no need for arranging extra isolator；
The 3b output port of output photoswitch connects Transmission Fibers/gain media；
As shown in figure 4, main control unit includes interconnective MCU and FPGA controller；Connection between MCU and FPGA controller
Circuit includes address bus data bus；FPGA controller connects data acquisition unit by controlling bus；At data acquisition
The outfan of reason unit connects FPGA controller by data/address bus；Wherein MCU can be selected for arm processor or other microprocessor
Device；MCU connects respectively and controls photoswitch to control the N road 1x2 photoswitch in matrix, output photoswitch and Nx1 photoswitch；MCU
It is also connected with and controls laser control driver element；FPGA controller connects and controls laser control driver element；
As shown in figure 5, data acquisition process unit includes opto-electric transceiver module, the high gain signal amplification mould being sequentially connected
Block, isolation and filter circuit, A/D convertor circuit, data storage cell；Wherein high gain signal amplification module, A/D convertor circuit,
Data storage cell is controlled by main control unit；Opto-electric transceiver module is by the photodetector APD of high-responsivity and its bias plasma
Road forms, and the optical signal receiving is converted to the current signal output of respective intensities by APD；High gain signal amplification module will connect
The current signal receiving is converted to voltage signal and is amplified accordingly；Filtering and isolation circuit by amplify after voltage signal
It is filtered and isolates high gain signal amplification module and A/D convertor circuit；A/D convertor circuit will under the control of main control unit
The voltage signal receiving sends data storage cell to after being converted to digital signal；Data storage cell storage numeral accordingly
Signal is simultaneously supplied to main control unit use；
The OTDR optical amplification device of many backups of this common light source includes two kinds of mode of operations：OTDR mode of operation and image intensifer
Mode of operation；As shown in Figure 6；
When mode of operation is for OTDR mode of operation, with the pump as OTDR light source in MCU selection laser control driving matrix
Driver element work corresponding to the laser instrument of Pu, and close the driver element of other pump lasers；Simultaneously according to selected by user
Or system default, it is selected as the pump laser of OTDR light source, corresponding for selected pump laser 1x2 photoswitch is switched to
OTDR operation range；The corresponding passage of this selected pump laser in gating Nx1 photoswitch, controls the 1b input of output photoswitch
Port is connected with 3b output port；
Meanwhile, the corresponding mode selection switch of this selected pump laser in switch mode selecting switch matrix, this pumping is swashed
The type of drive of light device switches to OTDR impulse ejection mode；Thereafter, the length according to surveyed Transmission Fibers link, arranges institute
Institute's setting parameter is passed to FPGA controller and is started FPGA by data/address bus by light pulse amplitude, pulsewidth and the sampling number needing
Controller, FPGA controller controls the driver element of this selected pump laser so that pump laser output optical pulse signal；
This light pulse signal passes sequentially through corresponding 1x2 photoswitch, Nx1 photoswitch, optical circulators 1a- in optical switch matrix>2a end
Mouth, output photoswitch, enter Transmission Fibers/gain media；Various terminal in Transmission Fibers is lost or optical fiber damages and brings
Rayleigh scattering or Fresnel reflection pass through to export photoswitch and optical circulator 2a->3a port returns to data acquisition process
In module；In digital sampling and processing, opto-electric transceiver module receives this scattering/reflected light signal, converts optical signals to electricity
Amplify through plus and blowup circuit module after signal, be converted to the signal of telecommunication in scope needed for A/D convertor circuit；
Meanwhile, FPGA controller controls A/D convertor circuit to start to sample, and the signal of telecommunication sampling is converted to digital signal
After send data storage cell to, after the completion for the treatment of the scanning of fibre circuit, the number in data storage cell is read in FPGA segmentation
According to, and MCU to is sent the data of reading by data/address bus, MCU carries out data processing after receiving data, and according to set
Put sampling number, FPGA controller constantly executes said process, after the completion for the treatment of all sampling processes, complete acquired in MCU analysis
Portion's data simultaneously reports Transmission Fibers link load and various event etc.；
If the pump laser being elected to be OTDR light source breaks down, the now input of data acquisition process unit is OTDR detection
End cannot any scattering/reflected light signal it is assumed that now as the pump laser of OTDR light source, to number be i, then permissible
Think that this pump laser or its driver element there is a problem, system automatically according to i+1 to N, automatically cut by the order of 1 to i-1
Change pump laser and corresponding driver element and tested, meanwhile, automatically report the pump laser going wrong to number and
Possible problem making reason.
It is possible to judge whether to meet turn on pump condition after MCU obtains correct Transmission Fibers loss and attenuation data；
Normal firstly the need of confirmation Transmission Fibers state；The factor determining whether also has OTDR optical amplification device temperature, and each pumping swashs
Light device die temperature, scattering/reflected light signal power, input optical signal is more than threshold value, and whether OTDR optical amplification device is in puts
Big device enables（Enable）State etc.；If these factor of judgment all do not alert, then image intensifer Working mould can be started
Formula；
When mode of operation is for image intensifer mode of operation, N number of 1x2 photoswitch is switched to image intensifer operation range by MCU, control
The 2b input port of system output photoswitch is connected with 3b output port；Meanwhile, the pattern choosing in switch mode selecting switch matrix
Select switch, all pump laser type of drive are switched to image intensifer Laser Drive mode；Thereafter, MCU checks completely
During sufficient turn on pump condition, each pump laser is controlled to open default pump power；If being unsatisfactory for turn on pump condition, report and alarm
Information；If Transmission Fibers detection is abnormal, MCU reports optical fiber link abnormal information；
When gain control or output are abnormal in discovery system, now it is possible to pump laser triggered
Close pump operated.In order to detailed the reason knowing fault, now do not need to cut off optical fiber, and only need to main control unit control
Optical switch, mode selector switch are switched to OTDR puls transmission mode as described above and judge that fiber failure situation both may be used.
Above procedure is all remote equipment room manipulation.Hold OTDR instrument without the person of sending someone to carry out cutting off optical fiber to scene, access
OTDR instrument.
Claims (10)
1. a kind of OTDR optical amplification device of many backups of common light source is it is characterised in that include：Main control unit, data acquisition
The pump laser assembled unit that processing unit, laser control driver element, N number of pump laser are constituted, photoswitch control
Matrix, Nx1 photoswitch, optical circulators, output photoswitch, pump combiner MUX；It is provided with N in described photoswitch control matrix
Individual 1x2 photoswitch；N≥2；
Laser control driver element includes mode selection switch matrix and laser control drives matrix；Laser control drives
It is provided with N number of driver element in dynamic matrix；Main control unit connects and control model selecting switch matrix；Mode selection switch matrix
N number of outfan connects the N number of driver element controlling laser control to drive in matrix respectively；Laser control drives in matrix
Each driver element connects each corresponding pump laser in the laser instrument assembled unit of Pu respectively；
Photoswitch controls the 1x2 photoswitch in matrix to comprise an input and two selection outfans；Photoswitch controls matrix
Connect and be controlled by main control unit, be connected for switching one of the input of 1x2 photoswitch and two selection outfans；Each
The input of 1x2 photoswitch is corresponding with each pump laser outfan in pump laser assembled unit respectively to be connected；Each
One selection outfan of 1x2 photoswitch is connected with each input of Nx1 photoswitch respectively, each 1x2 photoswitch another
Outfan is selected to be connected with each input of pump combiner MUX respectively；The input of 1x2 photoswitch and a selection outfan
During connection, this 1x2 photoswitch switches to OTDR operation range；The input of 1x2 photoswitch selects outfan to be connected with another
When, this 1x2 photoswitch switches to image intensifer operation range；
Nx1 photoswitch connects and is controlled by main control unit；Nx1 photoswitch includes N number of input and an outfan；
Optical circulators include tri- ports of 1a, 2a, 3a；
Output photoswitch connects and is controlled by main control unit, and output photoswitch includes 1b, 2b input port and 3b output port；
The outfan of Nx1 photoswitch connects the 1a port of optical circulators, and the 2a port of optical circulators connects output photoswitch
1b input port；The 3a port of optical circulators connects the input of data acquisition process unit；Data acquisition process unit
Outfan connect main control unit；
The outfan of pump combiner MUX connects the 2b input port of output photoswitch by isolator；Or there is isolation energy
The outfan of the pump combiner of power is directly connected to export the 2b input port of photoswitch；
The 3b output port of output photoswitch connects Transmission Fibers.
2. many backups of common light source as claimed in claim 1 OTDR optical amplification device it is characterised in that
Main control unit includes interconnective MCU and FPGA controller；FPGA controller connects data acquisition by controlling bus
Unit；The outfan of data acquisition process unit connects FPGA controller by data/address bus；MCU connects respectively and controls light to open
Close the N road 1x2 photoswitch controlling in matrix, output photoswitch and Nx1 photoswitch；MCU is also connected with and controls laser control to drive
Moving cell；FPGA controller connects and controls laser control driver element；
The OTDR optical amplification device of many backups of this common light source includes two kinds of mode of operations；OTDR mode of operation and image intensifer
Mode of operation；
When mode of operation is for OTDR mode of operation, with the pump as OTDR light source in MCU selection laser control driving matrix
Driver element work corresponding to the laser instrument of Pu, and close the driver element of other pump lasers；Simultaneously according to selected by user
Or system default, it is selected as the pump laser of OTDR light source, corresponding for selected pump laser 1x2 photoswitch is switched to
OTDR operation range；The corresponding passage of this selected pump laser in gating Nx1 photoswitch, controls the 1b input of output photoswitch
Port is connected with 3b output port；Meanwhile, this selected pump laser corresponding pattern choosing in switch mode selecting switch matrix
Select switch, the type of drive of this selected pump laser is switched to OTDR impulse ejection mode；Thereafter, according to being surveyed transmission
The length of optical fiber link, the required light pulse amplitude of setting, pulsewidth and sampling number, by data/address bus, institute's setting parameter is passed to
FPGA controller simultaneously starts FPGA controller, and FPGA controller controls the driver element of this selected pump laser so that pumping
Laser instrument output optical pulse signal；This light pulse signal passes sequentially through corresponding 1x2 photoswitch, Nx1 light in optical switch matrix and opens
Pass, optical circulators 1a->2a port, output photoswitch, enter Transmission Fibers；In Transmission Fibers various terminal loss or
Optical fiber damages the Rayleigh scattering brought or Fresnel reflection passes through to export photoswitch and optical circulator 2a->3a port returns to
In digital sampling and processing；Digital sampling and processing receives this scattering/reflected light signal, converts optical signals to the signal of telecommunication
After deliver to FPGA controller and carry out data sampling；FPGA controller sends the data of reading to MCU, after MCU receives data
Carry out data processing, to obtain the testing result of Transmission Fibers link；
When mode of operation is for image intensifer mode of operation, N number of 1x2 photoswitch is switched to image intensifer operation range by MCU, control
The 2b input port of system output photoswitch is connected with 3b output port；Meanwhile, the pattern choosing in switch mode selecting switch matrix
Select switch, all pump laser type of drive are switched to image intensifer Laser Drive mode；Thereafter, MCU checks completely
During sufficient turn on pump condition, each pump laser is controlled to open default pump power.
3. many backups of common light source as claimed in claim 2 OTDR optical amplification device it is characterised in that
Data acquisition process unit includes opto-electric transceiver module, high gain signal amplification module, isolation and the filter being sequentially connected
Wave circuit, A/D convertor circuit, data storage cell；Wherein high gain signal amplification module, A/D convertor circuit, data storage cell
It is controlled by main control unit；
In digital sampling and processing, opto-electric transceiver module receives this scattering/reflected light signal, converts optical signals to telecommunications
Amplify through plus and blowup circuit module after number, be converted to the signal of telecommunication in scope needed for A/D convertor circuit；
Meanwhile, FPGA controller controls A/D convertor circuit to start to sample, and the signal of telecommunication sampling is converted to digital signal
After send data storage cell to, after the completion for the treatment of the scanning of fibre circuit, the number in data storage cell is read in FPGA segmentation
According to, and MCU to is sent the data of reading by data/address bus, MCU carries out data processing after receiving data, and according to set
Put sampling number, FPGA controller constantly executes said process, after the completion for the treatment of all sampling processes, complete acquired in MCU analysis
Portion's data is to obtain the testing result of Transmission Fibers link.
4. many backups of common light source as claimed in claim 2 or claim 3 OTDR optical amplification device it is characterised in that
During OTDR mode of operation, if the selected pump laser i as OTDR light source or its corresponding driver element break down,
Main control unit automatic switchover pump laser and corresponding driver element in a predetermined sequence automatically.
5. many backups of common light source as claimed in claim 4 OTDR optical amplification device it is characterised in that
If the currently selected pump laser i as OTDR light source or its corresponding driver element break down, during automatic switchover
Order according to i+1 to N, 1 to i-1.
6. many backups of common light source as claimed in claim 2 or claim 3 OTDR optical amplification device it is characterised in that
The turn on pump condition meeting is needed during image intensifer mode of operation：Determine that Transmission Fibers state is normal according to testing result, and
OTDR optical amplification device temperature, each pump laser die temperature, these factor of judgment of scattering/reflected light signal power all do not have
Alarm, input optical signal is more than threshold value, and OTDR optical amplification device is in amplifier enabled state.
7. many backups of the common light source as described in claim 1,2 or 3 OTDR optical amplification device it is characterised in that
In optical circulators, light can only follow 1a->2a->3a direction one-way transmission.
8. many backups of the common light source as described in claim 1,2 or 3 OTDR optical amplification device it is characterised in that
Optical circulators are replaced with fiber coupler.
9. a kind of OTDR optical amplification device control method of many backups of common light source is it is characterised in that include two kinds of Working moulds
Formula：OTDR mode of operation and image intensifer mode of operation；
When mode of operation is for OTDR mode of operation, with the pump as OTDR light source in MCU selection laser control driving matrix
Driver element work corresponding to the laser instrument of Pu, and close the driver element of other pump lasers；Simultaneously according to selected by user
Or system default, it is selected as the pump laser of OTDR light source, corresponding for selected pump laser 1x2 photoswitch is switched to
OTDR operation range；The corresponding passage of this selected pump laser in gating Nx1 photoswitch, controls the 1b input of output photoswitch
Port is connected with 3b output port；Meanwhile, this selected pump laser corresponding pattern choosing in switch mode selecting switch matrix
Select switch, the type of drive of this selected pump laser is switched to OTDR impulse ejection mode；Thereafter, according to being surveyed transmission
The length of optical fiber link, the required light pulse amplitude of setting, pulsewidth and sampling number, by data/address bus, institute's setting parameter is passed to
FPGA controller simultaneously starts FPGA controller, and FPGA controller controls the driver element of this selected pump laser so that pumping
Laser instrument output optical pulse signal；This light pulse signal passes sequentially through corresponding 1x2 photoswitch, Nx1 light in optical switch matrix and opens
Pass, optical circulators 1a->2a port, output photoswitch, enter Transmission Fibers；In Transmission Fibers various terminal loss or
Optical fiber damages the Rayleigh scattering brought or Fresnel reflection passes through to export photoswitch and optical circulator 2a->3a port returns to
In digital sampling and processing；In digital sampling and processing, opto-electric transceiver module receives this scattering/reflected light signal, by light
Signal amplifies through plus and blowup circuit module after being converted to the signal of telecommunication, is converted to the telecommunications in scope needed for A/D convertor circuit
Number；Meanwhile, FPGA controller controls A/D convertor circuit to start to sample, and the signal of telecommunication sampling is converted to after digital signal
Send data storage cell to, after the completion for the treatment of a fibre circuit scanning, the data in data storage cell is read in FPGA segmentation,
And MCU to is sent the data of reading by data/address bus, MCU carries out data processing after receiving data, and according to set
Sampling number, FPGA controller constantly executes said process, after the completion for the treatment of all sampling processes, whole acquired in MCU analysis
Data is to obtain the testing result of Transmission Fibers link；
MCU judges to meet turn on pump condition, mode of operation could be switched to image intensifer mode of operation；
When mode of operation is for image intensifer mode of operation, N number of 1x2 photoswitch is switched to image intensifer operation range by MCU, control
The 2b input port of system output photoswitch is connected with 3b output port；Meanwhile, the pattern choosing in switch mode selecting switch matrix
Select switch, all pump laser type of drive are switched to image intensifer Laser Drive mode；Thereafter, MCU checks completely
During sufficient turn on pump condition, each pump laser is controlled to open default pump power.
10. many backups of common light source as claimed in claim 9 OTDR optical amplification device control method it is characterised in that
The turn on pump condition meeting is needed during image intensifer mode of operation：Determine that Transmission Fibers state is normal according to testing result, and
OTDR optical amplification device temperature, each pump laser die temperature, these factor of judgment of scattering/reflected light signal power all do not have
Alarm, input optical signal is more than threshold value, and OTDR optical amplification device is in amplifier enabled state.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655720A (en) * | 2017-02-27 | 2017-05-10 | 大族激光科技产业集团股份有限公司 | Power supply driving apparatus and laser power supply |
| CN106679937A (en) * | 2017-03-02 | 2017-05-17 | 大族激光科技产业集团股份有限公司 | Test system for semiconductor laser units |
| CN113382523A (en) * | 2017-06-02 | 2021-09-10 | 深圳市绎立锐光科技开发有限公司 | Laser optical fiber lighting system, indoor lighting system and outdoor lighting system |
| EP3764566A4 (en) * | 2018-03-08 | 2021-12-15 | Accelink Technologies Co., Ltd. | Detection method and device for high-dynamic-range optical time domain reflection |
| CN115185046A (en) * | 2022-07-04 | 2022-10-14 | 京东科技信息技术有限公司 | Light source module, initialization and control method and device |
| WO2023109508A1 (en) * | 2021-12-15 | 2023-06-22 | 中兴通讯股份有限公司 | Centralized light supply apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079668A (en) * | 2007-07-05 | 2007-11-28 | 华为技术有限公司 | Device, method and device for positioning the optical fiber failure |
| WO2010126427A1 (en) * | 2009-04-30 | 2010-11-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for fault discovery in a passive optical network (pon) |
| CN201878147U (en) * | 2010-08-25 | 2011-06-22 | 浙江万马集团电子有限公司 | Passive optical network (PON) access network optical cable fault on-line monitor |
| CN104536093A (en) * | 2014-12-29 | 2015-04-22 | 武汉光迅科技股份有限公司 | Multichannel combined wave switching device used for simulation monitoring PON system |
| CN105762621A (en) * | 2015-01-06 | 2016-07-13 | 贰陆股份公司 | Rare earth-doped fiber amplifier with integral optical metrology functionality |
| CN206620132U (en) * | 2016-12-13 | 2017-11-07 | 无锡市德科立光电子技术有限公司 | The OTDR optical amplification devices of many backups of common light source |
-
2016
- 2016-12-13 CN CN201611144348.3A patent/CN106452569B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079668A (en) * | 2007-07-05 | 2007-11-28 | 华为技术有限公司 | Device, method and device for positioning the optical fiber failure |
| WO2010126427A1 (en) * | 2009-04-30 | 2010-11-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for fault discovery in a passive optical network (pon) |
| CN201878147U (en) * | 2010-08-25 | 2011-06-22 | 浙江万马集团电子有限公司 | Passive optical network (PON) access network optical cable fault on-line monitor |
| CN104536093A (en) * | 2014-12-29 | 2015-04-22 | 武汉光迅科技股份有限公司 | Multichannel combined wave switching device used for simulation monitoring PON system |
| CN105762621A (en) * | 2015-01-06 | 2016-07-13 | 贰陆股份公司 | Rare earth-doped fiber amplifier with integral optical metrology functionality |
| CN206620132U (en) * | 2016-12-13 | 2017-11-07 | 无锡市德科立光电子技术有限公司 | The OTDR optical amplification devices of many backups of common light source |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655720A (en) * | 2017-02-27 | 2017-05-10 | 大族激光科技产业集团股份有限公司 | Power supply driving apparatus and laser power supply |
| CN106655720B (en) * | 2017-02-27 | 2019-01-22 | 大族激光科技产业集团股份有限公司 | Power source drive device and laser power supply |
| CN106679937A (en) * | 2017-03-02 | 2017-05-17 | 大族激光科技产业集团股份有限公司 | Test system for semiconductor laser units |
| CN113382523A (en) * | 2017-06-02 | 2021-09-10 | 深圳市绎立锐光科技开发有限公司 | Laser optical fiber lighting system, indoor lighting system and outdoor lighting system |
| CN113382523B (en) * | 2017-06-02 | 2023-04-18 | 深圳市绎立锐光科技开发有限公司 | Laser optical fiber lighting system, indoor lighting system and outdoor lighting system |
| EP3764566A4 (en) * | 2018-03-08 | 2021-12-15 | Accelink Technologies Co., Ltd. | Detection method and device for high-dynamic-range optical time domain reflection |
| WO2023109508A1 (en) * | 2021-12-15 | 2023-06-22 | 中兴通讯股份有限公司 | Centralized light supply apparatus |
| CN115185046A (en) * | 2022-07-04 | 2022-10-14 | 京东科技信息技术有限公司 | Light source module, initialization and control method and device |
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|---|---|
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