CN106452569B - The OTDR optical amplification device and control method of prepare more part of common light source - Google Patents
The OTDR optical amplification device and control method of prepare more part of common light source Download PDFInfo
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- CN106452569B CN106452569B CN201611144348.3A CN201611144348A CN106452569B CN 106452569 B CN106452569 B CN 106452569B CN 201611144348 A CN201611144348 A CN 201611144348A CN 106452569 B CN106452569 B CN 106452569B
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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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Abstract
The present invention provides a kind of OTDR optical amplification device of prepare more part of common light source, including：Main control unit, data acquisition process unit, laser control driving unit, the pump laser assembled unit of N number of pump laser composition, photoswitch control matrix, Nx1 photoswitch, optical circulators, output photoswitch, pump combiner MUX；N number of 1x2 photoswitch is equipped in the photoswitch control matrix；N≥2；It include that mode selection switch matrix and laser control drive matrix in laser control driving unit；Laser control, which drives, is equipped with N number of driving unit in matrix；Main control unit connection and control model selection switch matrix；Each driving unit in laser control driving matrix is separately connected each corresponding pump laser in the laser assembled unit of Pu；The present invention, which shares pumping laser light source, realizes OTDR function built in optical amplification device, and backup light source increases the reliability of OTDR.
Description
Technical field
The present invention relates to fiber optic communication field, a kind of common light source for being used in especially a kind of fiber optic communication field it is more
The OTDR optical amplification device of backup.
Background technique
Optical time domain reflectometer（OTDR）Full name in English be Optical Time Domain Reflectometer.OTDR
It is backscattering and manufactured precision caused by Rayleigh scattering and the Fresnel reflection when being transmitted in a fiber using optical signal
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, connector decaying and fault location etc..
Long-haul transmission system generally all be unable to do without erbium-doped fiber amplifier at this stage, and raman optical amplifier or both combines
The Now therefore to all whom it may concern etc. constituted together.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, after confirming that connector, optical fiber attenuation are all normal value,
Image intensifer could be accessed.In long distance transmission field application, when optical communication equipment networking need to purchase dedicated OTDR and
Mating test device is tested and is monitored to the optical fiber of connection.Optical time domain reflectometer（OTDR）Pass through direct-connected optical fiber or utilization
Specific wavelength light pulse insertion optical fiber is tested, and Test Networking scheme is complicated, and OTDR equipment is at high price.Factors above causes
The complexity of optical-fiber network maintenance with monitoring fiber functions is high, at high cost.And OTDR equipment belongs to expensive equipment, built in
Laser light source once damages, it is necessary to OTDR equipment is replaced, so that optical-fiber network maintenance cost further increases.
Summary of the invention
It is an object of the present invention to overcome the shortcomings of the prior art and provide a kind of prepare more parts of common light source
OTDR optical amplification device can open OTDR operating mode, first before optical amplification device work to detect the damage of transmission fiber
Consumption situation, confirmation transmission fiber open image intensifer operating mode later in order；The present invention reduces expensive OTDR to set
Standby, sharing pumping laser light source realizes OTDR function built in optical amplification device, and backup light source increase OTDR can
By property, it is but not necessarily to additional spending；The technical solution adopted by the present invention is that：
A kind of OTDR optical amplification device of prepare more part of common light source, including：Main control unit, data acquisition process unit,
Laser control driving unit, the pump laser assembled unit of N number of pump laser composition, photoswitch control matrix, Nx1 light
Switch, optical circulators, output photoswitch, pump combiner MUX；N number of 1x2 light is equipped in the photoswitch control matrix to open
It closes；N≥2；
It include that mode selection switch matrix and laser control drive matrix in laser control driving unit；Laser control
N number of driving unit is equipped in system driving matrix；Main control unit connection and control model selection switch matrix；Mode selection switch square
N number of output end of battle array is separately connected N number of driving unit in control laser control driving matrix；Laser control drives matrix
In each driving unit be separately connected each corresponding pump laser in the laser assembled unit of Pu；
It includes an input terminal and two selection output ends that photoswitch, which controls the 1x2 photoswitch in matrix,；Photoswitch control
Matrix connects and is controlled by main control unit, connect for switching one of the input terminal of 1x2 photoswitch and two selection output ends；Respectively
The input terminal of a 1x2 photoswitch is correspondingly connected with each pump laser output end in pump laser assembled unit respectively；Respectively
One selection output end of a 1x2 photoswitch is connect with each input terminal of Nx1 photoswitch respectively, each 1x2 photoswitch it is another
A selection output end is connect with each input terminal of pump combiner MUX respectively；The input terminal of 1x2 photoswitch and a selection export
When the connection of end, which is switched to OTDR operation range；The input terminal of 1x2 photoswitch and another selection output end connect
When connecing, which is switched to image intensifer operation range；
Nx1 photoswitch connects and is controlled by main control unit；Nx1 photoswitch includes N number of input terminal and an output end；
Optical circulators include tri- ports 1a, 2a, 3a；
Output photoswitch connects and is controlled by main control unit, and output photoswitch includes 1b, 2b input port and 3b output end
Mouthful；
The port 1a of the output end connection optical circulators of Nx1 photoswitch, the port 2a of optical circulators connects output light
The 1b input port of switch；The input terminal of the port the 3a connection data acquisition process unit of optical circulators；Data acquisition process
The output end of unit connects main control unit；
The output end of pump combiner MUX connects the 2b input port of output photoswitch by isolator；Or have every
The output end of pump combiner from ability is directly connected to the 2b input port of output photoswitch；
The 3b output port for exporting photoswitch connects transmission fiber.
Further,
Main control unit includes MCU interconnected and FPGA controller；FPGA controller connects data by control bus
Acquisition unit；The output end of data acquisition process unit connects FPGA controller by data/address bus；MCU is separately connected and controls
Photoswitch controls the road N 1x2 photoswitch, output photoswitch and Nx1 photoswitch in matrix；MCU is also connected with and controls laser control
Driving unit processed；FPGA controller connects and controls laser control driving unit；
The OTDR optical amplification device of prepare more part of the common light source includes two kinds of operating modes；OTDR operating mode and light are put
Big device operating mode；
When operating mode is OTDR operating mode, MCU is selected in laser control driving matrix and as OTDR light source
Pump laser corresponding to driving unit work, and close the driving unit of other pump lasers；Simultaneously according to user
Selected or system default is selected as the pump laser of OTDR light source, and the corresponding 1x2 photoswitch of selected pump laser is cut
Shift to OTDR operation range；Gate the corresponding channel of the selected pump laser of this in Nx1 photoswitch, the 1b of control output photoswitch
Input port and 3b output port are connected；Meanwhile the corresponding mould of the selected pump laser of this in switch mode selection switch matrix
Formula selection switch, is switched to OTDR impulse ejection mode for the driving method of the selected pump laser；Thereafter, according to being surveyed
Required light pulse amplitude, pulsewidth and sampling number is arranged in the length of transmission fiber link, by data/address bus by institute's setting parameter
It being transmitted to FPGA controller and starts FPGA controller, FPGA controller controls the driving unit of the selected pump laser, so that
Pump laser output optical pulse signal；The light pulse signal passes sequentially through corresponding 1x2 photoswitch, Nx1 in optical switch matrix
Photoswitch, optical circulators 1a->The port 2a, output photoswitch, into transmission fiber；Various terminal loss in transmission fiber
Or optical fiber damage bring Rayleigh scattering or Fresnel reflection pass through output photoswitch and optical circulator 2a->3a is returned port
It returns in digital sampling and processing；Digital sampling and processing receives the scattering/reflected light signal, converts optical signals to electricity
It is sent after signal to FPGA controller and carries out data sampling；The data transmission of reading is received number to MCU, MCU by FPGA controller
According to rear carry out data processing, to obtain the testing result of transmission fiber link；
When operating mode is image intensifer operating mode, N number of 1x2 photoswitch is switched to image intensifer work shelves by MCU
Position, the 2b input port and 3b output port of control output photoswitch are connected；Meanwhile the mould in switch mode selection switch matrix
All pump laser driving methods are switched to image intensifer laser driving method by formula selection switch；Thereafter, MCU is examined
It looks into when meeting turn on pump condition, controls each pump laser and open to preset pump power.
Further,
Data acquisition process unit includes sequentially connected opto-electric transceiver module, high gain signal amplification module, isolation
And filter circuit, A/D converter circuit, data storage cell；Wherein high gain signal amplification module, A/D converter circuit, data storage
Unit is controlled by main control unit；
Opto-electric transceiver module receives the scattering/reflected light signal in digital sampling and processing, converts optical signals to
Amplify after electric signal through plus and blowup circuit module, is converted to the electric signal in range needed for A/D converter circuit；
At the same time, FPGA controller control A/D converter circuit starts to sample, and the electric signal sampled is converted to number
Send data storage cell after signal to, after the completion of a fibre circuit scans, FPGA segmentation is read in data storage cell
Data, and the data transmission of reading is received to MCU, MCU by data/address bus and carries out data processing after data, and according to
Set sampling number, FPGA controller constantly execute the above process, after the completion of all sampling processes, acquired in MCU analysis
Total data to obtain the testing result of transmission fiber link.
Further,
When OTDR operating mode, if selected occur as the pump laser i of OTDR light source or its correspondence driving unit
Failure, main control unit automatically switch pump laser and corresponding driving unit in a predetermined sequence automatically.
Further,
If currently selected break down as the pump laser i of OTDR light source or its correspondence driving unit, cut automatically
Sequence when changing is according to i+1 to N, and 1 to i-1.
Further,
The turn on pump condition for needing to meet when image intensifer operating mode：Determining transmission fiber state just according to testing result
Often, and OTDR optical amplification device temperature, each pump laser die temperature, these factor of judgment of scattering/reflected light signal power
It does not all alert, input optical signal is greater than threshold value, and OTDR optical amplification device is in amplifier enabled state.
Further,
In optical circulators, light can only follow 1a->2a->The direction 3a one-way transmission.
Further,
Optical circulators are replaced with fiber coupler.
The advantage of the invention is that：The present invention chooses some pump laser while OTDR light source being used as to share, and not only saves
The equipment cost of expensive OTDR is saved, and can be with the loss of on-line real time monitoring fibre circuit, triggering alarm in time.Except this
Except, OTDR common light source or prepare more part, after current OTDR light source breaks down, main control unit can be according to feedback information
It is OTDR light source that corresponding backup light source, which is arranged, and OTDR detection business will not interrupt.
Detailed description of the invention
Fig. 1 is structure composition schematic diagram of the invention.
Fig. 2 is laser control structure of driving unit schematic diagram of the invention.
Fig. 3 is the 1x2 photoswitch schematic diagram in photoswitch control matrix of the invention.
Fig. 4 is main control unit structural schematic diagram of the invention.
Fig. 5 is data acquisition process cellular construction schematic diagram of the invention.
Fig. 6 is the flow chart of control method of the present invention.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
The present invention proposes a kind of OTDR optical amplification device of prepare more part of common light source, as shown in Figure 1, including：Master control list
Member, data acquisition process unit, laser control driving unit, N number of pump laser constitute pump laser assembled unit,
Photoswitch controls matrix, Nx1 photoswitch, optical circulators, output photoswitch, pump combiner MUX；The photoswitch controls square
N number of 1x2 photoswitch is equipped in battle array；N≥2；
As shown in Fig. 2, including that mode selection switch matrix and laser control drive square in laser control driving unit
Battle array；Laser control, which drives, is equipped with N number of driving unit in matrix；Main control unit connection and control model selection switch matrix；Mould
N number of output end of formula selection switch matrix is separately connected N number of driving unit in control laser control driving matrix；Laser
Each driving unit in control driving matrix is separately connected each corresponding pump laser in the laser assembled unit of Pu；
Raman pump laser can be used in pump laser, and type is generally semiconductor pump laser, exports laser
Using polarization-maintaining mode.Pumping wavelength is generally 14xxnm.If it is second order raman amplifier, pumping wavelength be can also be
13xxnm.Pump laser can also select EDFA pump laser；Raman pump laser and EDFA pump laser all belong to
In semiconductor pump laser；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 is both used as OTDR light source as common light source,
As image intensifer light source；Common light source is any one of pump laser assembled unit pump laser, and there is no special
Finger property, it can be any one of 1~N of pump laser in pump laser assembled unit；When practical operation, this
A little pump lasers are to take similar implementation in parallel, and user can specify a certain pump laser swashing as OTDR light source
Light device can also use the option of system default；In this way when some is occurred by the pump laser that OTDR light source is done in the first choosing
After failure, system automatically switches laser of next pump laser as OTDR light source, and reports pump laser different automatically
Normal information, in this way, built-in OTDR function is unaffected；Pump laser as common light source be all on OTDR light source all
It is mutually redundant relationship.
Photoswitch (Optical Switch, OS) is a kind of with one or more selectable transmission windows, can be to light
Optical signal in transmission line or integrated optical circuit is mutually converted or the device of logical operation.Its most basic form has 1 × 2
Road, 2 × 2 road photoswitches etc..
As shown in figure 3, the 1x2 photoswitch in photoswitch control matrix includes an input terminal and two selection output ends；
Photoswitch control matrix connects and is controlled by main control unit, for switching the input terminal and two selection output ends of 1x2 photoswitch
One of connection；The input terminal of each 1x2 photoswitch respectively with each pump laser output end in pump laser assembled unit
It is correspondingly connected with；One selection output end of each 1x2 photoswitch is connect with each input terminal of Nx1 photoswitch respectively, each 1x2 light
Another selection output end of switch is connect with each input terminal of pump combiner MUX respectively；
When the input terminal of 1x2 photoswitch is connect with a selection output end 1, which is switched to OTDR work shelves
Position；When the input terminal of 1x2 photoswitch is connect with another selection output end 2, which is switched to image intensifer work shelves
Position；
Nx1 photoswitch connects and is controlled by main control unit；Nx1 photoswitch includes N number of input terminal and an output end；N×1
Photoswitch for realizing OTDR light source prepare more part function；By main control unit according to Transmission system demand determine pump laser and
The respective path of the photoswitch of N × 1 gates the pump laser as OTDR light source；
Optical circulators include tri- ports 1a, 2a, 3a；In optical circulators, light can only follow 1a->2a->The direction 3a
One-way transmission；In practical 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 end
Mouthful；Output photoswitch is for switching OTDR operating mode and image intensifer operating mode；
The port 1a of the output end connection optical circulators of Nx1 photoswitch, the port 2a of optical circulators connects output light
The 1b input port of switch；The input terminal of the port the 3a connection data acquisition process unit of optical circulators；Data acquisition process
The output end of unit connects main control unit；
The Laser synthesizing that pump combiner MUX is used to export the pump laser of different wave length is a branch of；Pump combiner
MUX is generally film filter type, needs to connect an isolator at this time behind；The output end of pump combiner MUX is logical
Cross the 2b input port of isolator connection output photoswitch；Pump combiner MUX is also possible to that polarized pump bundling device is isolated, and uses
In the laser power of synthesis phase co-wavelength, while there is the ability of isolation reflection signal, prevents reflection signal feedback to laser
The output stability of pump laser is influenced in resonant cavity, at this time the isolator additional with regard to no setting is required；
The 3b output port for exporting photoswitch connects transmission fiber/gain media；
As shown in figure 4, main control unit includes MCU interconnected and FPGA controller；Between MCU and FPGA controller
Connection line includes address bus and data/address bus；FPGA controller connects data acquisition unit by control bus；Data are adopted
The output end of collection processing unit connects FPGA controller by data/address bus；Wherein arm processor or other micro- can be selected in MCU
Processor；MCU is separately connected and controls the road N 1x2 photoswitch, output photoswitch and the Nx1 photoswitch in photoswitch control matrix；
MCU is also connected with and controls laser control driving unit；FPGA controller connects and controls laser control driving unit；
As shown in figure 5, data acquisition process unit includes sequentially connected opto-electric transceiver module, high gain signal amplification
Module, isolation and filter circuit, A/D converter circuit, data storage cell；Wherein high gain signal amplification module, AD conversion electricity
Road, data storage cell are controlled by main control unit；Opto-electric transceiver module by high-responsivity photodetector APD and its bias
Circuit composition, APD export the current signal that the optical signal received is converted to respective intensities；High gain signal amplification module will
The current signal received is converted to voltage signal and is amplified accordingly；Filtering and isolation circuit believe amplified voltage
It number is filtered and high gain signal amplification module and A/D converter circuit is isolated；A/D converter circuit is under the control of main control unit
Data storage cell is sent to after the voltage signal received is converted to digital signal；The corresponding number of data storage cell storage
Word signal is simultaneously supplied to main control unit use；
The OTDR optical amplification device of prepare more part of the common light source includes two kinds of operating modes：OTDR operating mode and light are put
Big device operating mode；As shown in Figure 6；
When operating mode is OTDR operating mode, MCU is selected in laser control driving matrix and as OTDR light source
Pump laser corresponding to driving unit work, and close the driving unit of other pump lasers；Simultaneously according to user
Selected or system default is selected as the pump laser of OTDR light source, and the corresponding 1x2 photoswitch of selected pump laser is cut
Shift to OTDR operation range；Gate the corresponding channel of the selected pump laser of this in Nx1 photoswitch, the 1b of control output photoswitch
Input port and 3b output port are connected；
Meanwhile the corresponding mode selection switch of the selected pump laser of this in switch mode selection switch matrix, by the pump
The driving method of Pu laser is switched to OTDR impulse ejection mode；Thereafter, according to the length of surveyed transmission fiber link, if
Required light pulse amplitude, pulsewidth and sampling number are set, institute's setting parameter is transmitted to by FPGA controller by data/address bus and is started
FPGA controller, FPGA controller control the driving unit of the selected pump laser, so that pump laser output optical pulse
Signal；The light pulse signal passes sequentially through corresponding 1x2 photoswitch, Nx1 photoswitch, optical circulators 1a- in optical switch matrix>
The port 2a, output photoswitch, into transmission fiber/gain media；Various terminal loss or optical fiber damage in transmission fiber
Bring Rayleigh scattering or Fresnel reflection pass through output photoswitch and optical circulator 2a->The port 3a is acquired back to data
In processing module；Opto-electric transceiver module receives the scattering/reflected light signal in digital sampling and processing, and optical signal is converted
To amplify after electric signal through plus and blowup circuit module, the electric signal in range needed for A/D converter circuit is converted to；
At the same time, FPGA controller control A/D converter circuit starts to sample, and the electric signal sampled is converted to number
Send data storage cell after signal to, after the completion of a fibre circuit scans, FPGA segmentation is read in data storage cell
Data, and the data transmission of reading is received to MCU, MCU by data/address bus and carries out data processing after data, and according to
Set sampling number, FPGA controller constantly execute the above process, after the completion of all sampling processes, acquired in MCU analysis
Total data and report transmission fiber link load and various events etc.；
If the pump laser for being elected to be OTDR light source breaks down, at this time input, that is, OTDR of data acquisition process unit
Test side cannot get any scattering/reflected light signal, it is assumed that be at this time i as the pump laser number of OTDR light source, then
It is considered that the pump laser or its driving unit there is a problem, system is automatically according to i+1 to N, and 1 to i-1 sequence is certainly
Dynamic switching pump laser and corresponding driving unit are simultaneously tested, meanwhile, report the pump laser to go wrong to compile automatically
Number and the reason of may cause problem.
After MCU obtains correct transmission fiber loss and attenuation data, so that it may judge whether to meet turn on pump condition；
It is normal firstly the need of confirmation transmission fiber state；There are also OTDR optical amplification device temperature, each pumpings to swash for the factor further judged
Light device die temperature, scattering/reflected light signal power, input optical signal are greater than threshold value, and whether OTDR optical amplification device, which is in, puts
Big device is enabled（Enable）State etc.；If these factor of judgment all do not alert, image intensifer Working mould can star
Formula；
When operating mode is image intensifer operating mode, N number of 1x2 photoswitch is switched to image intensifer work shelves by MCU
Position, the 2b input port and 3b output port of control output photoswitch are connected；Meanwhile the mould in switch mode selection switch matrix
All pump laser driving methods are switched to image intensifer laser driving method by formula selection switch；Thereafter, MCU is examined
It looks into when meeting turn on pump condition, controls each pump laser and open to preset pump power；If being unsatisfactory for turn on pump condition, report
Warning information；If transmission fiber detection is abnormal, MCU reports optical fiber link exception information；
When gain control in discovery system or abnormal output power, at this time it is possible that pump laser
Pump operation is closed in triggering.For detailed the reason of knowing failure, cutting optical fiber is not needed at this time, and only needs main control unit
Control optical switch, mode selector switch are switched to OTDR puls transmission mode as described above and had judged fiber failure situation both
It can.Above procedure is all that remote equipment room manipulates.OTDR instrument is held without the person of sending someone and carries out cutting optical fiber to scene, is connect
Enter OTDR instrument.
Claims (10)
1. a kind of OTDR optical amplification device of prepare more part of common light source, which is characterized in that including：Main control unit, data acquisition
Processing unit, laser control driving unit, the pump laser assembled unit of N number of pump laser composition, photoswitch control
Matrix, Nx1 photoswitch, optical circulators, output photoswitch, pump combiner MUX；N is equipped in the photoswitch control matrix
A 1x2 photoswitch；N≥2；
It include that mode selection switch matrix and laser control drive matrix in laser control driving unit；Laser control drives
N number of driving unit is equipped in dynamic matrix；Main control unit connection and control model selection switch matrix；Mode selection switch matrix
N number of output end is separately connected N number of driving unit in control laser control driving matrix；Laser control drives in matrix
Each driving unit is separately connected each corresponding pump laser in the laser assembled unit of Pu；
It includes an input terminal and two selection output ends that photoswitch, which controls the 1x2 photoswitch in matrix,；Photoswitch controls matrix
Main control unit is connected and be controlled by, is connect for switching one of the input terminal of 1x2 photoswitch and two selection output ends；It is each
The input terminal of 1x2 photoswitch is correspondingly connected with each pump laser output end in pump laser assembled unit respectively；It is each
One selection output end of 1x2 photoswitch is connect with each input terminal of Nx1 photoswitch respectively, each 1x2 photoswitch another
Selection output end is connect with each input terminal of pump combiner MUX respectively；The input terminal of 1x2 photoswitch and a selection output end
When connection, which is switched to OTDR operation range；The input terminal of 1x2 photoswitch is connect with another selection output end
When, which is switched to image intensifer operation range；
Nx1 photoswitch connects and is controlled by main control unit；Nx1 photoswitch includes N number of input terminal and an output end；
Optical circulators include first port (1a), second port (2a), third port (3a)；
Output photoswitch connects and is controlled by main control unit, and output photoswitch includes first input port (1b), the second input terminal
Mouth (2b) and output port (3b)；
The first port (1a) of the output end connection optical circulators of Nx1 photoswitch, the second port (2a) of optical circulators is even
Connect the first input port (1b) of output photoswitch；Third port (3a) the connection data acquisition process unit of optical circulators
Input terminal；The output end of data acquisition process unit connects main control unit；
The output end of pump combiner MUX connects the second input port (2b) of output photoswitch by isolator；Or have
The output end of the pump combiner of isolating power is directly connected to the second input port (2b) of output photoswitch；
The output port (3b) for exporting photoswitch connects transmission fiber.
2. the OTDR optical amplification device of prepare more part of common light source as described in claim 1, which is characterized in that
Main control unit includes MCU interconnected and FPGA controller；FPGA controller connects data acquisition by control bus
Unit；The output end of data acquisition process unit connects FPGA controller by data/address bus；MCU is separately connected and controls light and opens
Close the road N 1x2 photoswitch, output photoswitch and the Nx1 photoswitch in control matrix；MCU is also connected with and controls laser control drive
Moving cell；FPGA controller connects and controls laser control driving unit；
The OTDR optical amplification device of prepare more part of the common light source includes two kinds of operating modes；OTDR operating mode and image intensifer
Operating mode；
When operating mode be OTDR operating mode when, MCU select laser control drive matrix in the pump as OTDR light source
The work of driving unit corresponding to the laser of Pu, and close the driving unit of other pump lasers；Simultaneously according to selected by user
Or system default, it is selected as the pump laser of OTDR light source, the corresponding 1x2 photoswitch of selected pump laser is switched to
OTDR operation range；The corresponding channel of the selected pump laser of this in Nx1 photoswitch is gated, the first of control output photoswitch is defeated
Inbound port (1b) and output port (3b) are connected；Meanwhile the selected pump laser is corresponding in switch mode selection switch matrix
Mode selection switch, the driving method of the selected pump laser is switched to OTDR impulse ejection mode；Thereafter, according to
Required light pulse amplitude, pulsewidth and sampling number is arranged in the length of surveyed transmission fiber link, will be set by data/address bus
Parameter is transmitted to FPGA controller and starts FPGA controller, and FPGA controller controls the driving unit of the selected pump laser,
So that pump laser output optical pulse signal；The light pulse signal pass sequentially through corresponding 1x2 photoswitch in optical switch matrix,
Nx1 photoswitch, optical circulators first port (1a)->Second port (2a), output photoswitch, into transmission fiber；Transmit light
Various terminal loss or optical fiber damage bring Rayleigh scattering or Fresnel reflection in fibre pass through output photoswitch and optics
Circulator second port (2a)->Third port (3a) returns in digital sampling and processing；Digital sampling and processing receives
The Rayleigh scattering or Fresnel reflection optical signal, convert optical signals to send after electric signal and carry out data to FPGA controller and adopt
Sample；FPGA controller carries out data processing after the data transmission of reading is received data to MCU, MCU, to obtain transmission fiber
The testing result of link；
When operating mode is image intensifer operating mode, N number of 1x2 photoswitch is switched to image intensifer operation range by MCU, control
The second input port (2b) and output port (3b) of system output photoswitch are connected；Meanwhile in switch mode selection switch matrix
Mode selection switch, all pump laser driving methods are switched to image intensifer laser driving method；Thereafter,
When MCU inspection meets turn on pump condition, controls each pump laser and open to preset pump power.
3. the OTDR optical amplification device of prepare more part of common light source as claimed in claim 2, which is characterized in that
Data acquisition process unit includes sequentially connected opto-electric transceiver module, high gain signal amplification module, isolation and filter
Wave circuit, A/D converter circuit, data storage cell；Wherein high gain signal amplification module, A/D converter circuit, data storage cell
It is controlled by main control unit；
Opto-electric transceiver module receives the Rayleigh scattering or Fresnel reflection optical signal in digital sampling and processing, by optical signal
Amplify after being converted to electric signal through plus and blowup circuit module, is converted to the electric signal in range needed for A/D converter circuit；
At the same time, FPGA controller control A/D converter circuit starts to sample, and the electric signal sampled is converted to digital signal
After send data storage cell to, after the completion of fibre circuit scans, the number in data storage cell is read in FPGA segmentation
According to, and data processing is carried out after the data transmission of reading is received data to MCU, MCU by data/address bus, and according to set
Sampling number is set, FPGA controller constantly executes what above-mentioned sampling controlling A/D converter circuit since FPGA controller will extremely be read
Data transmission is to the process of MCU, and after the completion of all sampling processes, the acquired total data of MCU analysis is to obtain transmission light
The testing result of fine link.
4. the OTDR optical amplification device of prepare more part of common light source as claimed in claim 2 or claim 3, which is characterized in that
When OTDR operating mode, if selected break down as the pump laser i of OTDR light source or its correspondence driving unit,
Main control unit automatically switches pump laser and corresponding driving unit in a predetermined sequence automatically.
5. the OTDR optical amplification device of prepare more part of common light source as claimed in claim 4, which is characterized in that
If it is currently selected as the pump laser i of OTDR light source or its correspond to driving unit and break down, when automatic switchover
Sequence according to i+1 to N, 1 to i-1.
6. the OTDR optical amplification device of prepare more part of common light source as claimed in claim 2 or claim 3, which is characterized in that
The turn on pump condition for needing to meet when image intensifer operating mode：Determine that transmission fiber 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 greater than threshold value, and OTDR optical amplification device is in amplifier enabled state.
7. the OTDR optical amplification device of prepare more part of common light source as claimed in claim 1,2 or 3, which is characterized in that
In optical circulators, light can only follow first port (1a)->Second port (2a)->The direction third port (3a) unidirectionally passes
It is defeated.
8. the OTDR optical amplification device of prepare more part of common light source as claimed in claim 1,2 or 3, which is characterized in that
Optical circulators are replaced with fiber coupler.
9. a kind of OTDR optical amplification device control method of prepare more part of common light source, which is characterized in that including two kinds of Working moulds
Formula：OTDR operating mode and image intensifer operating mode；
When operating mode be OTDR operating mode when, MCU select laser control drive matrix in the pump as OTDR light source
The work of driving unit corresponding to the laser of Pu, and close the driving unit of other pump lasers；Simultaneously according to selected by user
Or system default, it is selected as the pump laser of OTDR light source, the corresponding 1x2 photoswitch of selected pump laser is switched to
OTDR operation range；The corresponding channel of the selected pump laser of this in Nx1 photoswitch is gated, the first of control output photoswitch is defeated
Inbound port (1b) and output port (3b) are connected；Meanwhile the selected pump laser is corresponding in switch mode selection switch matrix
Mode selection switch, the driving method of the selected pump laser is switched to OTDR impulse ejection mode；Thereafter, according to
Required light pulse amplitude, pulsewidth and sampling number is arranged in the length of surveyed transmission fiber link, will be set by data/address bus
Parameter is transmitted to FPGA controller and starts FPGA controller, and FPGA controller controls the driving unit of the selected pump laser,
So that pump laser output optical pulse signal；The light pulse signal pass sequentially through corresponding 1x2 photoswitch in optical switch matrix,
Nx1 photoswitch, optical circulators first port (1a)->Second port (2a), output photoswitch, into transmission fiber；Transmit light
Various terminal loss or optical fiber damage bring Rayleigh scattering or Fresnel reflection in fibre pass through output photoswitch and optics
Circulator second port (2a)->Third port (3a) returns in digital sampling and processing；Light in digital sampling and processing
Electric receiver module receives the Rayleigh scattering or Fresnel reflection optical signal, puts after converting optical signals to electric signal through high-gain
Big circuit module amplification, is converted to the electric signal in range needed for A/D converter circuit；At the same time, FPGA controller control AD turns
It changes circuit to start to sample, sends data storage cell to after the electric signal sampled is converted to digital signal, to an optical fiber
After the completion of line scanning, the data in data storage cell are read in FPGA segmentation, and are passed the data of reading by data/address bus
MCU is given, MCU carries out data processing after receiving data, and according to set sampling number, on FPGA controller constantly executes
It states and samples the data transmission that will extremely read controlling A/D converter circuit since FPGA controller to the process of MCU, to all samplings
After the completion of process, MCU analyzes acquired total data to obtain the testing result of transmission fiber link；
MCU judgement meets turn on pump condition, and operating mode could be switched to image intensifer operating mode；
When operating mode is image intensifer operating mode, N number of 1x2 photoswitch is switched to image intensifer operation range by MCU, control
The second input port (2b) and output port (3b) of system output photoswitch are connected；Meanwhile in switch mode selection switch matrix
Mode selection switch, all pump laser driving methods are switched to image intensifer laser driving method；Thereafter,
When MCU inspection meets turn on pump condition, controls each pump laser and open to preset pump power.
10. the OTDR optical amplification device control method of prepare more part of common light source as claimed in claim 9, which is characterized in that
The turn on pump condition for needing to meet when image intensifer operating mode：Determine that transmission fiber 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 greater than threshold value, and OTDR optical amplification device is in amplifier enabled state.
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| 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 |
| CN108990224B (en) * | 2017-06-02 | 2021-05-04 | 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 |
| CN108199767B (en) * | 2018-03-08 | 2020-06-30 | 武汉光迅科技股份有限公司 | Method and device for detecting high dynamic range optical time domain reflection |
| CN116264654A (en) * | 2021-12-15 | 2023-06-16 | 中兴通讯股份有限公司 | Centralized light supply device |
| 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 |
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 |
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