CN106451055B - Phase control method and control circuit for big array element optics coherence tomography - Google Patents
Phase control method and control circuit for big array element optics coherence tomography Download PDFInfo
- Publication number
- CN106451055B CN106451055B CN201611094825.XA CN201611094825A CN106451055B CN 106451055 B CN106451055 B CN 106451055B CN 201611094825 A CN201611094825 A CN 201611094825A CN 106451055 B CN106451055 B CN 106451055B
- Authority
- CN
- China
- Prior art keywords
- phase
- signal
- modulator
- modulated signal
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10053—Phase control
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of phase control method for big array element optics coherence tomography, it is characterised in that the modulated signal of phase control algorithm is modulated using orthogonal coding single-frequency, compared to for more dither algorithms, without the debugging signal of multiple frequencies, is simplified algorithm, is convenient for hardware realization；For single-frequency dither algorithm, the number for applying phase modulation in certain time period is increased, control bandwidth is improved.The present invention also provides a kind of phase-control circuits for big array element optics coherence tomography, including programmable chip 1, digital analog converter 3, control signal conditioning circuit 4, analog-digital converter 5 and input signal conditioning circuit 6, it is characterised in that: further includes multiple selector 2.In the limited situation of 1 output pin of programmable chip, the maximum control number of control circuit is improved, can be realized the phase controlling of the big array element optics coherence tomography system of hundred tunnels grade.
Description
Technical field
The present invention relates to the optics coherence tomography of laser, especially a kind of phase control method for big array element optics coherence tomography and
Control circuit.
Background technique
Laser coherent combining technology can break through the limit of single laser output power, improve laser power and brightness, be
The research hotspot of superlaser technical field at present.(English name is for master oscillator power amplification based on Active phase control
Master Oscillator Power Amplifier, abbreviation MOPA) structure is a kind of Laser coherent combining system generallyd use
It unites (referring to 1688069 A of patent of invention CN).(referring to document: Liu Zejin waits Active phase to the system structure as shown in Figure 1
Control the research Chinese laser of optical-fiber laser optics coherence tomography, 2009,36 (3): 518-524.), system mainly includes seed laser
1/, laser beam splitter 2/, phase-modulator 3/, laser amplifier 4/, laser aligner 5/, laser bundling device 6/, spectroscope 7/, light
Electric explorer 8/With phase-control circuit 9/。
Wherein, phase-control circuit is the core devices of optics coherence tomography.Current phase-control circuit is generallyd use such as Fig. 2
Shown in structure (referring to document: grain Rong Tao waits the optics coherence tomography high-speed, high precision phase controller light laser of optical-fiber laser and grain
Beamlet, 2012,24 (6): 1290-1294), control circuit mainly has following part to constitute: programmable chip 1, digital analog converter
3, signal conditioning circuit 4, analog-digital converter 5 and input signal conditioning circuit 6 are controlled.
For the phase noise that the components such as laser amplifier introduce in elimination system, the phase noise to each road laser is needed
It is controlled, realizes the same-phase output of laser array.The light intensity fluctuation of light beam is usually synthesized using photodetector detection,
Phase noise information is therefrom extracted by certain algorithm again, and carries out Active phase control using phase-control circuit, from
And eliminate the influence of phase noise.Current widely used phase control algorithm has random paralleling gradient descent algorithm (ginseng
Seeing document: Wang little Lin waits high-precision phase position control system of the based on random paralleling gradient descent algorithm optical-fiber laser optics coherence tomography
Unite Acta Physica Sinica, 2010,59 (2): 973-979), (referring to document: horse Yan Xing waits the more dithering main oscillations of to more dither algorithms
The technology light laser of power amplifier optics coherence tomography and the particle beams, 2009,21 (11): 1639-1644) and single-frequency dither algorithm (ginseng
See document 5:Y Ma, waits .Coherent beam combination with single frequency dithering
Technique.Opt.Lett., 2010,35 (9): 1308-1310) etc..
As shown in Figure 2 (by taking 3 tunnels as an example), phase-control circuit is existed the principle of more dither algorithms by phase-modulator first
On each road laser load a high-frequency carrier signal, the signal when with beam Propagation can by the phase fluctuation amplitude modulation of light beam,
Finally embodied in a manner of the shake of far-field spot striped.This optical signal electric signal is converted to using photodetector to pass
It is defeated by phase-control circuit, phase-control circuit calculates the phase difference between light beam based on demodulation principle again, and generates benefit accordingly
The phase that each road light beam is corrected in signal loading to corresponding phase-modulator is repaid, the final same-phase for realizing laser array is defeated
Out.As shown in Fig. 3 (by taking 3 tunnels as an example), single-frequency dither algorithm only needs a modulated signal to the principle of single-frequency dither algorithm, and
The phase-modulator 3 of each road laser is loaded into according to time-multiplexed mode timesharing/On, phase-control circuit 9/Timesharing is to each road
The modulated signal of light beam is demodulated, and the phase control signal timesharing that demodulation obtains is loaded into the phase-modulator of each road laser
3/On.
Currently, all there is certain deficiency in these phase control algorithms and phase-control circuit:
(1) control bandwidth of SPGD algorithm and single-frequency dither algorithm with control number bandwidth decline rapidly；
(2) more dither algorithms need multiple chattering frequencies, and circuit debugging is cumbersome, to the response frequency range of phase-modulator
It is required that excessively high；
(3) existing phase-control circuit is constituted based on monolithic programmable chip, and control number is limited, it is difficult to realize hundred tunnels
The phase controlling of the big array element optics coherence tomography system of grade.
Summary of the invention
The purpose of the present invention is to provide a kind of phase control method for big array element (hundred tunnels grade) optics coherence tomography and its
Control circuit, to overcome the above-mentioned deficiency of existing phase control algorithm and its control circuit.
A kind of phase control method for big array element optics coherence tomography, it is characterised in that: the modulation of phase control algorithm is believed
It constitutes number as follows:
Assuming that the total M of phase-modulator × N number of, corresponding laser number is also the road M × N, and algorithm exports M group signal altogether, and i-th
Organizing signal is
Wherein HM(i, k) is the numerical value that the i-th row kth of M rank hadamard matrix arranges, and k=1,2 ..., M, T is modulated signal
Period, t is the time；
(j-1) T to the jT moment applies modulated signal y to (i-1) × N+j road phase-modulatori(t), wherein i value
From 1 to M, j value is from 1 to N；And repeat the above process, until closing phase-control circuit.
The present invention provides a kind of phase-control circuit for big array element optics coherence tomography, including programmable chip (1), digital-to-analogue
Converter (3), control signal conditioning circuit (4), analog-digital converter (5) and input signal conditioning circuit (6), it is characterised in that:
It further include multiple selector (2).
Preferably, the multiple selector (2) is that N selects 1 multiple selector.
Preferably, the multiple selector (2) is programmable logic chip.
Preferably, the multiple selector (2) is data selector chip.
Further, the operation program of the programmable chip (1) comprises the following modules: module (7), signal occur for address
Module (8), signal demodulation module (9), multi-path choice module (10) occur；
It is multi-path choice module (10) and multiple selector (2) offer address signal that module (7), which occur, for the address, every
Time T updates primary address, exports the 1st road to the road N input signal successively from output signal, so recycles；
The signal generating module (8) includes M signal generator, each signal generator export one group of period be T but
It is different modulated signal；
The signal processing module (9) includes M group, and every group has N number of signal demodulation module, is denoted as 9- for j-th of i-th group
Ij works when the enable signal of the multi-path choice module (10) is high level, in the enabled letter of multi-path choice module (10)
Number be low level when stop working and keep control signal, reset other intermediate parameters；
The multi-path choice module (10) has M, and according to address mould occurs for i-th of multi-path choice module (10)
The address signal that block (7) generates, the signal output for inputting (j-1) * T to j*T moment from signal demodulation module 9-ij, simultaneously
Make the enable signal high level for being input to signal demodulation module 9-ij, the enable signal of other signal demodulation modules is low electricity
Flat, so on circulate, wherein i value is from 1 to M, and j value is from 1 to N.
Compared with prior art, technical effect of the invention:
1, Laser coherent combining system structure of the invention is identical with more shakes, the system structure of single-frequency dither algorithm, such as
Shown in Fig. 1-Fig. 3, difference is modulated signal difference, and the improvement of algorithm, which is that, has invented new modulated signal, and use is orthogonal
Single-frequency modulation is encoded, compared to for more dither algorithms, without the debugging signal of multiple frequencies, simplifies algorithm, it is real convenient for hardware
It is existing；For single-frequency dither algorithm, the number for applying phase modulation in certain time period is increased, control band is improved
It is wide.
2, the control signal timesharing of programmable chip 1 is passed to by different digital analog converters using multiple selector 2
3, in the limited situation of 1 output pin of programmable chip, the maximum control number of control circuit is improved, can be realized hundred tunnels
The phase controlling of the big array element optics coherence tomography system of grade.
Detailed description of the invention
Fig. 1 is existing Laser coherent combining system schematic；
Fig. 2 is existing more dither algorithm Laser coherent combining system schematics；
Fig. 3 is existing single-frequency dither algorithm Laser coherent combining system schematic；
Fig. 4 is existing phase-control circuit structural schematic diagram；
Fig. 5 is 4 × 3 road Laser coherent combining system schematic of orthogonal coding single-frequency dither algorithm of the present invention；
Fig. 6 is 8 × 3 road Laser coherent combining system schematics of the invention
Fig. 7 is phase-control circuit structural schematic diagram of the present invention；
Fig. 8 is the program structure schematic diagram of phase-control circuit of the present invention.
Specific embodiment
Laser coherent combining system as shown in Figure 1, the total M of phase-modulator × it is N number of, corresponding laser number is also M × N
Road.The modulated signal of phase control algorithm is constituted as follows:
Orthogonal coding single-frequency dither algorithm exports M group signal altogether, and i-th group of signal is constituted as follows:
HM(i, k) is the numerical value that the i-th row kth of m rank hadamard matrix arranges, k=1,2 ..., M.
(j-1) T to the jT moment applies modulated signal y to (i-1) × N+j road phase-modulatori(t), i value from 1 to
M, j value are from 1 to N；And repeat the above process, until closing phase-control circuit.
Illustrate the phase control algorithm of phase control method of the present invention by taking 4 × 3 road Laser coherent combining systems as an example below
In modulated signal, as shown in Figure 5:
0 arrives the T moment, applies modulated signal y to No. 1st phase-modulator1(t), apply to No. 4th phase-modulator and modulate
Signal y2(t), apply modulated signal y to No. 7th phase-modulator3(t), apply modulated signal y to No. 10th phase-modulator4
(t)；
T to the 2T moment applies modulated signal y to No. 2nd phase-modulator1(t), apply to No. 5th phase-modulator and adjust
Signal y processed2(t), apply modulated signal y to No. 8th phase-modulator3(t), apply modulated signal to No. 11st phase-modulator
y4(t)；
2T to the 3T moment applies modulated signal y to No. 3rd phase-modulator1(t), apply to No. 6th phase-modulator and adjust
Signal y processed2(t), apply modulated signal y to No. 9th phase-modulator3(t), apply modulated signal to No. 12nd phase-modulator
y4(t)；
3T to the 4T moment executes 0 process for arriving the T moment；4T to the 5T moment executes the process at T to 2T moment；So follow
Ring, until closing phase-control circuit.
8 × 3 road Laser coherent combining systems are as shown in Figure 6:
0 arrives the T moment, applies modulated signal y to No. 1st phase-modulator1(t), apply to No. 4th phase-modulator and modulate
Signal y2(t), apply modulated signal y to No. 7th phase-modulator3(t), apply modulated signal y to No. 10th phase-modulator4
(t), apply modulated signal y to No. 13rd phase-modulator5(t), apply modulated signal y to No. 16th phase-modulator6(t), to
No. 19th phase-modulator applies modulated signal y7(t), apply modulated signal y to No. 22nd phase-modulator8(t)；
T to the 2T moment applies modulated signal y to No. 2nd phase-modulator1(t), apply to No. 5th phase-modulator and adjust
Signal y processed2(t), apply modulated signal y to No. 8th phase-modulator3(t), apply modulated signal to No. 11st phase-modulator
y4(t), apply modulated signal y to No. 14th phase-modulator5(t), apply modulated signal y to No. 17th phase-modulator6(t),
Apply modulated signal y to No. 20th phase-modulator7(t), apply modulated signal y to No. 23rd phase-modulator8(t)；
2T to the 3T moment applies modulated signal y to No. 3rd phase-modulator1(t), apply to No. 6th phase-modulator and adjust
Signal y processed2(t), apply modulated signal y to No. 9th phase-modulator3(t), apply modulated signal to No. 12nd phase-modulator
y4(t), apply modulated signal y to No. 15th phase-modulator5(t), apply modulated signal y to No. 18th phase-modulator6(t),
Apply modulated signal y to No. 21st phase-modulator7(t), apply modulated signal y to No. 24th phase-modulator8(t)；
3T to the 4T moment executes 0 process for arriving the T moment；4T to the 5T moment executes the process at T to 2T moment；So follow
Ring, until closing phase-control circuit.
Equally we can extend to the Laser coherent combining system of hundred tunnels grade, 8 × 12 road Laser coherent combining system tune
Signal processed is as follows:
0 arrives the T moment, applies modulated signal y to No. 1st phase-modulator1(t), apply to No. 13rd phase-modulator and adjust
Signal y processed2(t), apply modulated signal y to No. 25th phase-modulator3(t), apply modulated signal to No. 37th phase-modulator
y4(t), apply modulated signal y to No. 49th phase-modulator5(t), apply modulated signal y to No. 61st phase-modulator6(t),
Apply modulated signal y to No. 73rd phase-modulator7(t), apply modulated signal y to No. 85th phase-modulator8(t)；
T to the 2T moment applies modulated signal y to No. 2nd phase-modulator1(t), apply to No. 14th phase-modulator and adjust
Signal y processed2(t), apply modulated signal y to No. 26th phase-modulator3(t), apply modulated signal to No. 38th phase-modulator
y4(t), apply modulated signal y to No. 50th phase-modulator5(t), apply modulated signal y to No. 62nd phase-modulator6(t),
Apply modulated signal y to No. 74th phase-modulator7(t), apply modulated signal y to No. 86th phase-modulator8(t)；
2T to the 3T moment applies modulated signal y to No. 3rd phase-modulator1(t), apply to No. 15th phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 27th phase-modulator3(t), apply modulation letter to No. 39th phase-modulator
Number y4(t), apply modulated signal y to No. 51st phase-modulator5(t), apply modulated signal y to No. 63rd phase-modulator6
(t), apply modulated signal y to No. 75th phase-modulator7(t), apply modulated signal y to No. 87th phase-modulator8(t)；
3T to the 4T moment applies modulated signal y to No. 4th phase-modulator1(t), apply to No. 16th phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 28th phase-modulator3(t), apply modulation letter to No. 40th phase-modulator
Number y4(t), apply modulated signal y to No. 52nd phase-modulator5(t), apply modulated signal y to No. 64th phase-modulator6
(t), apply modulated signal y to No. 76th phase-modulator7(t), apply modulated signal y to No. 88th phase-modulator8(t)；
4T to the 5T moment applies modulated signal y to No. 5th phase-modulator1(t), apply to No. 17th phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 29th phase-modulator3(t), apply modulation letter to No. 41st phase-modulator
Number y4(t), apply modulated signal y to No. 53rd phase-modulator5(t), apply modulated signal y to No. 65th phase-modulator6
(t), apply modulated signal y to No. 77th phase-modulator7(t), apply modulated signal y to No. 89th phase-modulator8(t)；
5T to the 6T moment applies modulated signal y to No. 6th phase-modulator1(t), apply to No. 18th phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 30th phase-modulator3(t), apply modulation letter to No. 42nd phase-modulator
Number y4(t), apply modulated signal y to No. 54th phase-modulator5(t), apply modulated signal y to No. 66th phase-modulator6
(t), apply modulated signal y to No. 78th phase-modulator7(t), apply modulated signal y to No. 90th phase-modulator8(t)；
6T to the 7T moment applies modulated signal y to No. 7th phase-modulator1(t), apply to No. 19th phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 31st phase-modulator3(t), apply modulation letter to No. 43rd phase-modulator
Number y4(t), apply modulated signal y to No. 55th phase-modulator5(t), apply modulated signal y to No. 67th phase-modulator6
(t), apply modulated signal y to No. 79th phase-modulator7(t), apply modulated signal y to No. 91st phase-modulator8(t)；
7T to the 8T moment applies modulated signal y to No. 8th phase-modulator1(t), apply to No. 20th phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 32nd phase-modulator3(t), apply modulation letter to No. 44th phase-modulator
Number y4(t), apply modulated signal y to No. 56th phase-modulator5(t), apply modulated signal y to No. 68th phase-modulator6
(t), apply modulated signal y to No. 80th phase-modulator7(t), apply modulated signal y to No. 92nd phase-modulator8(t)；
8T to the 9T moment applies modulated signal y to No. 9th phase-modulator1(t), apply to No. 21st phase-modulator
Modulated signal y2(t), apply modulated signal y to No. 33rd phase-modulator3(t), apply modulation letter to No. 45th phase-modulator
Number y4(t), apply modulated signal y to No. 57th phase-modulator5(t), apply modulated signal y to No. 69th phase-modulator6
(t), apply modulated signal y to No. 81st phase-modulator7(t), apply modulated signal y to No. 93rd phase-modulator8(t)；
9T to the 10T moment applies modulated signal y to No. 10th phase-modulator1(t), it is applied to No. 22nd phase-modulator
Add modulated signal y2(t), apply modulated signal y to No. 34th phase-modulator3(t), apply to No. 46th phase-modulator and modulate
Signal y4(t), apply modulated signal y to No. 58th phase-modulator5(t), apply modulated signal y to No. 70th phase-modulator6
(t), apply modulated signal y to No. 82nd phase-modulator7(t), apply modulated signal y to No. 94th phase-modulator8(t)；
10T to the 11T moment applies modulated signal y to No. 11st phase-modulator1(t), it is applied to No. 23rd phase-modulator
Add modulated signal y2(t), apply modulated signal y to No. 35th phase-modulator3(t), apply to No. 47th phase-modulator and modulate
Signal y4(t), apply modulated signal y to No. 59th phase-modulator5(t), apply modulated signal y to No. 71st phase-modulator6
(t), apply modulated signal y to No. 83rd phase-modulator7(t), apply modulated signal y to No. 95th phase-modulator8(t)；
11T to the 12T moment applies modulated signal y to No. 12nd phase-modulator1(t), it is applied to No. 24th phase-modulator
Add modulated signal y2(t), apply modulated signal y to No. 36th phase-modulator3(t), apply to No. 48th phase-modulator and modulate
Signal y4(t), apply modulated signal y to No. 60th phase-modulator5(t), apply modulated signal y to No. 72nd phase-modulator6
(t), apply modulated signal y to No. 84th phase-modulator7(t), apply modulated signal y to No. 96th phase-modulator8(t)；
13T to the 14T moment executes 0 process for arriving the T moment；14T to the 15T moment executes the process at T to 2T moment；So
Circulation, until closing phase-control circuit.
A kind of phase-control circuit for big array element optics coherence tomography as shown in Figure 7, including programmable chip 1, digital-to-analogue
Converter 3, control signal conditioning circuit 4, analog-digital converter 5 and input signal conditioning circuit 6, it is characterised in that: further include more
Road selector 2.
Preferably, the multiple selector 2 is that N selects 1 multiple selector.
Preferably, the multiple selector 2 is programmable logic chip.
Preferably, the multiple selector 2 is data selector chip.
As shown in figure 8, the operation program of the programmable chip 1 comprises the following modules: module 7, signal hair occur for address
Raw module 8, signal demodulation module 9, multi-path choice module 10；
It is that multi-path choice module 10 and multiple selector 2 provide address signal that module 7, which occurs, for the address, every time T
Primary address is updated, exports the 1st road to the road N input signal successively from output signal, is so recycled；
The signal generating module 8 includes M signal generator, and each signal generator exports one group of period as T still
Different modulated signals；
The signal processing module 9 includes M group, and every group has N number of signal demodulation module, is denoted as 9- for j-th of i-th group
Ij works when the enable signal of the multi-path choice module 10 is high level, is in the enable signal of multi-path choice module 10
It stops working when low level and keeps control signal, reset other intermediate parameters；
The multi-path choice module 10 has M, and according to address module 7 occurs for i-th of multi-path choice module 10
The address signal of generation, the signal output for inputting (j-1) * T to j*T moment from signal demodulation module 9-ij, while making defeated
The enable signal entered to signal demodulation module 9-ij is high level, the enable signals of other signal demodulation modules is low level, such as
This reciprocation cycle, wherein i value is from 1 to M, and j value is from 1 to N.
Those skilled in the art will be clear that the scope of the present invention is not limited to example discussed above, it is possible to carry out to it
Several changes and modification, the scope of the present invention limited without departing from the appended claims.Although oneself is through in attached drawing and explanation
The present invention is illustrated and described in book in detail, but such illustrate and describe is only explanation or schematical, and not restrictive.
The present invention is not limited to the disclosed embodiments.
By to attached drawing, the research of specification and claims, those skilled in the art can be in carrying out the present invention
Understand and realize the deformation of the disclosed embodiments.In detail in the claims, term " includes " is not excluded for other steps or element,
And indefinite article "one" or "an" be not excluded for it is multiple.The certain measures quoted in mutually different dependent claims
The fact does not mean that the combination of these measures cannot be advantageously used.Any reference marker in claims is not constituted pair
The limitation of the scope of the present invention.
Claims (5)
1. a kind of phase control method for big array element optics coherence tomography, it is characterised in that: the modulated signal of phase control algorithm
It constitutes as follows:
Assuming that the total M of phase-modulator × N number of, corresponding laser number is also the road M × N, and algorithm exports M group signal, i-th group of letter altogether
Number it is
Wherein HM(i, k) is the numerical value that the i-th row kth of M rank hadamard matrix arranges, and k=1,2 ..., M, T is the week of modulated signal
Phase, t are the time；
(j-1) T to the jT moment applies modulated signal y to (i-1) × N+j road phase-modulatori(t), wherein i value from 1 to
M, j value are from 1 to N；And repeat the above process, until closing phase-control circuit.
2. a kind of phase-control circuit for big array element optics coherence tomography, including programmable chip (1), digital analog converter (3), control
Signal conditioning circuit (4), analog-digital converter (5) and input signal conditioning circuit (6) processed, it is characterised in that: further include multichannel choosing
Select device (2)；
The operation program of the programmable chip (1) comprises the following modules: address occur module (7), signal generating module (8),
Signal demodulation module (9), multi-path choice module (10)；
It is multi-path choice module (10) and multiple selector (2) offer address signal that module (7), which occur, for the address, every the time
T updates primary address, exports the 1st road to the road N input signal successively from output signal, so recycles；
The signal generating module (8) includes M signal generator, each signal generator export one group of period be T but not
Same modulated signal；
The signal processing module (9) includes M group, and every group has N number of signal demodulation module, is denoted as 9-ij for j-th of i-th group,
It works when the enable signal of the multi-path choice module (10) is high level, is in the enable signal of multi-path choice module (10)
It stops working when low level and keeps control signal, reset other intermediate parameters；
The multi-path choice module (10) has M, and according to address module occurs for i-th of multi-path choice module (10)
(7) address signal generated, the signal output for inputting (j-1) * T to j*T moment from signal demodulation module 9-ij, makes simultaneously
The enable signal for being input to signal demodulation module 9-ij is high level, and the enable signal of other signal demodulation modules is low level,
So on circulate, wherein i value is from 1 to M, and j value is from 1 to N.
3. being used for the phase-control circuit of big array element optics coherence tomography as claimed in claim 2, it is characterised in that: the multichannel choosing
Selecting device (2) is that N selects 1 multiple selector.
4. being used for the phase-control circuit of big array element optics coherence tomography as claimed in claim 2, it is characterised in that: the multichannel choosing
Selecting device (2) is programmable logic chip.
5. being used for the phase-control circuit of big array element optics coherence tomography as claimed in claim 2, it is characterised in that: the multichannel choosing
Selecting device (2) is data selector chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094825.XA CN106451055B (en) | 2016-12-02 | 2016-12-02 | Phase control method and control circuit for big array element optics coherence tomography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094825.XA CN106451055B (en) | 2016-12-02 | 2016-12-02 | Phase control method and control circuit for big array element optics coherence tomography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451055A CN106451055A (en) | 2017-02-22 |
| CN106451055B true CN106451055B (en) | 2018-12-07 |
Family
ID=58223779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094825.XA Active CN106451055B (en) | 2016-12-02 | 2016-12-02 | Phase control method and control circuit for big array element optics coherence tomography |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451055B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507688B (en) * | 2018-04-10 | 2019-05-03 | 中国人民解放军国防科技大学 | Phase detection and control method for large number of laser arrays |
| CN109802291B (en) * | 2019-02-18 | 2019-12-20 | 中国人民解放军国防科技大学 | Optical fiber laser aperture coherent synthesis phase control method based on deep learning |
| CN112202040B (en) * | 2020-10-12 | 2021-12-03 | 中国人民解放军国防科技大学 | Laser array piston phase control method |
| CN114006247B (en) * | 2021-11-03 | 2023-05-05 | 中国人民解放军国防科技大学 | Phase control system and method based on time-frequency multi-domain information |
| CN114859566B (en) * | 2022-04-18 | 2023-03-31 | 中国科学院光电技术研究所 | Multi-path laser splicing and synthesizing system based on automatic light path alignment and pointing accurate control |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009076963A (en) * | 2007-09-18 | 2009-04-09 | Mitsubishi Electric Engineering Co Ltd | Video signal processing apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8289986B2 (en) * | 2008-09-10 | 2012-10-16 | Samsung Electronics Co., Ltd | Self-organizing resource access apparatus and method in local area network communication environment |
| US9219540B2 (en) * | 2012-07-20 | 2015-12-22 | Freescale Semiconductor, Inc. | Method and system for phase compensation in multi-path communication device |
-
2016
- 2016-12-02 CN CN201611094825.XA patent/CN106451055B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009076963A (en) * | 2007-09-18 | 2009-04-09 | Mitsubishi Electric Engineering Co Ltd | Video signal processing apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 窄线宽纳秒脉冲光纤激光相干放大阵列;粟荣涛;《中国博士学位论文全文数据库信息科技辑》;20160115(第01期);I135-27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106451055A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106451055B (en) | Phase control method and control circuit for big array element optics coherence tomography | |
| CN109597347B (en) | Quantum chip feedback control method | |
| CN104932122B (en) | The control method of optical element | |
| CN112204580B (en) | Method and apparatus for facilitating resource pairing using deep Q networks | |
| CN106772813A (en) | Resolution ratio wavelengthtunable selecting switch and control method based on phase grating array | |
| CN107482469B (en) | The adjustment device and method of frequency comb | |
| CN102866876A (en) | Single chip integrated optical matrix-vector multiplier | |
| KR102437666B1 (en) | Data Rate Independent Serializer/Parallelizer (SERDES) lanes per lane | |
| KR20240054223A (en) | Electro-optical networks for machine learning | |
| CN105698820B (en) | A kind of laser gyro cavity translatory mirror shakes deformation active compensation device | |
| CN103580757A (en) | Optical network unit | |
| Sun et al. | Integrated continuously tunable optical orbital angular momentum generator | |
| CN107819524B (en) | The light-operated transmission method of Multiple Superposition state radio frequency orbital angular momentum signal, system | |
| CN109579819A (en) | It is a kind of to improve the method for optic fiber gyroscope graduation factor performance, optical fibre gyro | |
| CN116029350B (en) | Two-dimensional photon coherent convolution acceleration chip based on time interleaving and application system thereof | |
| CN116316007A (en) | Ultra-high-speed arbitrary waveform generator and generation method based on synthesized dimension | |
| CN113325917A (en) | Light computing device, system and computing method | |
| CN110417478A (en) | Microwave frequency division device and its microwave frequency division method | |
| CN107800024A (en) | Tunable pulse-position modulation signal generation device based on spectral structure | |
| CN113885590B (en) | High-speed expandable optical phased array control system based on FPGA | |
| Qinggui et al. | PIN photodiode array for free-space optical communication | |
| KR102277164B1 (en) | Waveform generator | |
| CN107172659A (en) | The method and device of resource allocation | |
| CN113660039A (en) | Programmable controlled multi-dimensional multiplexing microwave photon filter and filtering method thereof | |
| Li et al. | Direct measurement of density-matrix elements with a phase-shifting technique on a quantum photonic chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |