CN104807545B - The high-precision spectral measurement device of spatio-temporal synergy and method - Google Patents
The high-precision spectral measurement device of spatio-temporal synergy and method Download PDFInfo
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Abstract
The invention discloses a kind of high-precision spectral measurement device of spatio-temporal synergy and method, the light that light source (1) sends obtains flashlight through narrow Fabry-perot optical fiber scanning interferometer device (2) arrival spectral band generating unit of freely composing；A spectral band for close limit is extracted in flashlight, collimator and extender mirror (5) is entered by output optical fibre, circular light beam after expanding is shaped as horizontal linear beam through cylindrical lens (6), it is incident to the angle dispersion that virtual image phased array device (7) produces wide-angle, form the separate hyperfine spectrum wave band window in space, photodetector array (9) is incided after being converged by condenser lens (8), and be input to processing unit 10 and process, finally give the spectral information of tested close limit spectral band.Compared with prior art, it is applied widely instant invention overcomes the contradiction of high accuracy and wide scope in spectrum analysis, meet multichannel light microfluid sensor high pass measurement growth requirement.
Description
Technical field
The present invention relates to the high accuracy spectral measurement field in optical sensing field, more particularly to a kind of spectral measurement device
And method.
Background technology
The micro-resonant cavity of generation Echo Wall resonant mode (Whisper Gallery Mode, WGM) can be in the size of very little
Obtain quality factor (Q values) very high, up to 1010.Light can be very high in the resonant transmission number of times of high q-factor resonator, therefore
Sensor is built using high q-factor resonator, the coverage that light interacts with material molecule is increased, detection is greatly improved
Sensitivity.Therefore WGM moulds are used to make high-precision light microfluid sensing, especially in bio-sensing field.
The WGM moulds of light microfluid sensor can produce a series of equidistant pectination resonance spectrums.Because the spectrum of WGM moulds is non-
Often fine, the mode of current spectrum analysis or the scope in narrow spectral range of analysis (~100pm) are done to its wall scroll spectrum
High accuracy spectrum analysis, or carry out a plurality of spectrum analysis of low spectral resolution in wide spectral range (~100nm).In high pass
, it is necessary to each spectral line for passing through micro-resonant cavity WGM mould pectination resonance spectrums is used as a passage in measurement, so as to realize multiple
The wavelength-division multiplex of light microfluid sensor.Therefore wide ranges are both needed, resolution ratio high is ensured again.The present invention is just directed to this
One demand, overcomes the shortcomings of conventional spectral analysis device and proposes.
The content of the invention
In order to overcome above-mentioned problem of the prior art, the present invention to propose a kind of high-precision spectral measurement dress of spatio-temporal synergy
Put and method, using it is narrow freely compose Fabry-perot optical fiber scanning interferometer device and carry out the time-domain multiline wavelength of narrow spectral region sweep parallel
Retouch, and each Free Spectral Range separate spy parallel in spatial domain by angle dispersion using virtual image phased array device
Survey；Spectral measurement is realized by spatio-temporal synergy；
Meanwhile, slightly converted by by above-mentioned technical proposal, you can realize parallel spectral measurement so as to by spatio-temporal synergy
Realize the parallel spectral measurement of high precision wide range to a plurality of spectral line.
The present invention proposes a kind of high-precision spectral measurement device of spatio-temporal synergy, and the device includes light source 1, narrow freely composes
Fabry-perot optical fiber scanning interferometer device 2, narrow freely compose Fabry-perot optical fiber scanning interferometer device driver 3, spectrum generating unit, collimator and extender mirror
5th, cylindrical lens 6, virtual image phased array device 7, condenser lens 8, photodetector array 9 and processing unit 10；
The light that light source 1 sends is obtained through the narrow arrival spectral band generating unit of Fabry-perot optical fiber scanning interferometer device 2 of freely composing
Flashlight；A spectral band for close limit is extracted in flashlight, collimator and extender mirror 5 is entered by output optical fibre, expanded
Circular light beam afterwards turns into horizontal linear beam through the shaping of cylindrical lens 6, is incident to virtual image phased array device 7 and produces wide-angle
Angle dispersion, form the separate hyperfine spectrum wave band window in space, photodetector battle array is incided after being converged by condenser lens 8
On row 9, the luminous intensity to spatial distribution carries out opto-electronic conversion, and is input to processing unit 10 and is acquired and processes, final meter
The spectral information of tested close limit spectral band is calculated, the spectral band generating unit is made up of wavelength division multiplexer (11),
Reach wavelength division multiplexer carries out rough segmentation into the spectral band of multiple close limits according to spectral region.
The spectral band of the multiple close limit enters multiple collimator and extender mirrors 5 by different output optical fibres, formation
Circular light beam after multiple-channel output is expanded respectively again turns into horizontal linear beam through the shaping of cylindrical lens 6, and void is incident to respectively
The angle dispersion of wide-angle is produced as phased array device 7, the separate hyperfine spectrum wave band window in space is formed, it is saturating by focusing on respectively
Mirror 8 is incided on photodetector array 9 after converging, and the luminous intensity to spatial distribution carries out opto-electronic conversion, and is separately input to
Processing unit 10 is acquired and processes, and the spectral information of tested close limit spectral band is finally calculated respectively.
The spectral band generating unit is made up of wavelength division multiplexer 11 and photoswitch 12, and the wavelength division multiplexer 11 will be arrived
The light for reaching carries out rough segmentation into multiple spectral bands according to spectral region；The photoswitch 12 gates the spectrum of one of close limit
Wave band, collimator and extender mirror 5 is entered by output optical fibre.
The invention allows for a kind of high-precision spectral measurement method of spatio-temporal synergy, the method includes walking in detail below
Suddenly：
The light that step 1, wideband light source send freely composes Fabry-perot optical fiber scanning interferometer device by Optical Fiber Transmission to narrow, process
The narrow high-fineness for freely composing the generation of Fabry-perot optical fiber scanning interferometer device, narrow comb spectrum of freely composing are modulated to form the light with comb spectrum
Output；
Step 2, the optical signal input spectrum wave band generating unit with comb spectrum, extract a spectrum ripple for close limit
Section, enters into output optical fibre；
The collimated beam expanding lens of step 3, the output light of output optical fibre forms collimated light beam, incides after cylindrical lens in level
It is directionally focused, form linear beam outgoing；
Step 4, linear beam incide virtual image phased array device, launch outgoing according to wavelength dispersion in vertical direction, so
Assembled by condenser lens, so that virtual image phased array device constitutes the separate hyperfine wave band window in space；
Step 5, converging light project photodetector array, and each hyperfine wave band window occupies photodetector array
Quantity is 2~18 pixel；
Step 6, it is narrow freely compose that Fabry-perot optical fiber scanning interferometer device driver drives are narrow freely to compose Fabry-perot optical fiber scanning interferometer device,
Comb spectrum is driven to be scanned, so as to carry out the parallel spectral line scanning of time-domain in each hyperfine spectrum wave band window.Correspondence
The photodetector array pixel of each hyperfine wave band window simultaneously by optical signal converted electrical number, to each hyperfine wave band
All pixels carry out accumulation calculating occupied by window, used as freely to compose Fabry-perot optical fiber scanning dry by narrow in the hyperfine wave band window
The luminous intensity that device inscribed at one obtained during time sweep is related to, so as to record the spectrum of each hyperfine wave band window
Information；
Step 7, processing unit are acquired to the electric signal that photodetector array is exported, and obtain photodetector array
Then the data that spatio-temporal synergy is obtained are carried out calculating a plurality of spectral information of acquisition by the time domain scan values of different spatial.By
Then interior scanning is freely composed in the narrow of each hyperfine wave band window, while being again that the hyperfine wave band window synchronization of multiple wave bands is swept
Retouch, it is achieved that the parallel spectral measurement of the high precision wide range to a plurality of spectral line；
In the step 2, spectral band generating unit extracts close limit by wave filter in flashlight
Spectral band, collimator and extender mirror is entered by output optical fibre.
In the step 2, spectral band generating unit is by wavelength division multiplexer by arrival wavelength division multiplexer according to light
Spectral limit carries out rough segmentation into the spectral band of multiple close limits.The spectral band of the multiple close limit is by different output lights
Fibre enters multiple collimator and extender mirrors, and the circular light beam after the multiple-channel output of formation is expanded respectively again turns into water through cylindrical lens shaping
Flat linear beam, is incident to the angle dispersion that virtual image phased array device 7 produces wide-angle respectively, forms separate hyperfine in space
Spectral band window, incides on photodetector array after being converged by condenser lens respectively, and the luminous intensity to spatial distribution is entered
Row opto-electronic conversion, and be separately input to processing unit and be acquired and process, tested close limit spectrum is finally calculated respectively
The spectral information of wave band.
The light for reaching wavelength division multiplexer is carried out into rough segmentation into multiple light according to spectral region in spectral band generating unit
Spectrum wave band, the spectral band of one of close limit is gated by photoswitch, and collimator and extender mirror is entered by output optical fibre.
Compared with prior art, the present invention has following technique effect：
1st, instant invention overcomes the contradiction of high accuracy and wide scope in spectrum analysis；
2nd, the present invention is applied widely, is especially suitable for the pectination light of the narrow spectrum width of the WGM resonant modes of light microfluid sensor
Spectrometry, meets multichannel light microfluid sensor high pass measurement growth requirement.
Brief description of the drawings
Fig. 1 is the parallel spectral measurement schematic device of spatio-temporal synergy high precision wide range；
Fig. 2 is shown using the parallel spectral measurement device of the spatio-temporal synergy high precision wide range of multiple photodetector arrays
It is intended to；
Fig. 3 is the parallel spectral measurement schematic device of the spatio-temporal synergy high precision wide range using photoswitch switching；
Fig. 4 is the parallel spectral measurement method schematic diagram of spatio-temporal synergy；
Fig. 5 is the WGM resonant mode spectrum schematic diagrames of light microfluid sensor；
In figure, 1, light source, 2, it is narrow freely compose Fabry-perot optical fiber scanning interferometer device, 3, narrow freely compose Fabry-perot optical fiber scanning interferometer device
Driver, 4, wave filter, 5, collimator and extender mirror, 6, cylindrical lens, 7, virtual image phased array device, 8, condenser lens, 9, light electrical resistivity survey
Survey device array, 10, processing unit, 11, wavelength division multiplexer, 12, photoswitch.
Specific embodiment
Below in conjunction with the drawings and the specific embodiments, technical scheme is described in further detail.
Embodiment 1：The parallel spectral measurement device of spatio-temporal synergy high precision wide range
As shown in figure 1, the light that light source 1 sends (freely composes optical fiber through narrow Fabry-perot optical fiber scanning interferometer device 2 of freely composing by narrow
Method amber scanning interferometer device driver 3 is controlled) reach wave filter 4, it is filtered after obtain flashlight；One is extracted in flashlight
The spectral band of close limit, collimator and extender mirror 5 is entered by output optical fibre, and the circular light beam after expanding is through the shaping of cylindrical lens 6
As horizontal linear beam, the angle dispersion that virtual image phased array device 7 produces wide-angle is incident to, forms the separate superfinishing in space
Thin spectral band window, incides on photodetector array 9 after being converged by condenser lens 8, and the luminous intensity to spatial distribution is entered
Row opto-electronic conversion, and be input to processing unit 10 and be acquired and process, finally calculate the spectrum letter of close limit spectral band
Breath.
Wherein：
Light source 1, using the wideband light source with wide spectrum, by optical fiber output, including ASE light sources and SLD light sources；
It is narrow freely to compose Fabry-perot optical fiber scanning interferometer device 2, for being modulated to wide spectrum, produce high-fineness, narrow freedom
Spectrum scanning comb spectrum very high, its free 1~20GHz of spectral limit, fineness 1000~5000；
It is narrow freely to compose Fabry-perot optical fiber scanning interferometer device control driver 3, for being scanned to Fabry-perot optical fiber by voltage modulated
The comb spectrum scanning of interferometer is controlled, and drives Fabry-perot optical fiber scanning interferometer device to carry out time-domain scanning, and by electricity in real time
Pressure is worth to the accurate wavelength value of comb spectrum；
Wave filter 4, for extracting a spectral band for the close limit of 1.6~6.4nm in flashlight, enters into defeated
Go out optical fiber；
Collimator and extender mirror 5, for the carrying out that space propagation is converted into the light transmitted out in optical fiber to be collimated and light beam expansion
Beam；
Cylindrical lens 6, for realizing circular beam shaping to space propagation collimated light, becomes horizontal wire
Light beam；
Virtual image phased array device 7, the angle dispersion for producing wide-angle, its angle dispersion distribution arrangement and horizontal linear beam
Vertically, the separate hyperfine spectrum wave band window in space is formed, spectral band window size scope is 8~160pm, with narrow freedom
The Free Spectral Range size for composing Fabry-perot optical fiber scanning interferometer device matches, and virtual image phased array device is put down by the glass of two sides plated film
The tilting composition of row flat board, the inclination angle of glass parallel flat is 1 °~10 °, and coated reflection rate is 0.85~0.99, and thickness is 50
~1000 μm, the dispersion for producing wide-angle, its angle dispersion distribution arrangement is vertical with wire hot spot；
Condenser lens 8, for assembling space collimated light beam；
Photodetector array 9, opto-electronic conversion is carried out for the luminous intensity to spatial distribution, each hyperfine wave band window
Occupy the pixel that photodetector array quantity is 2~18, the type of photoelectronic detecting array include using line array CCD or,
InGaAs and CMOS detection arrays are acquired to spatial light intensity and positional information, and incoming computer is stored and located
Reason；
Processing unit 10, including all-purpose computer and embedded computing system, for gathering defeated to photodetector array
The information electric signal for going out is acquired and processes, and accumulation calculating is carried out to each all pixel occupied by hyperfine wave band window,
As in the hyperfine wave band window by it is narrow freely compose one obtained when Fabry-perot optical fiber scanning interferometer device carries out time sweep when
The luminous intensity inscribed, finally calculates spectral information.
To the parallel spectral measurement device of the technical solution of the present invention slightly spatio-temporal synergy high precision wide range
Embodiment 2：Filled using the parallel spectral measurement of the spatio-temporal synergy high precision wide range of multiple photodetector arrays
Put
As shown in Fig. 2 the light that light source 1 sends (freely composes optical fiber through narrow Fabry-perot optical fiber scanning interferometer device 2 of freely composing by narrow
Method amber scanning interferometer device driver 3 is controlled) wavelength division multiplexer 11 is reached, carry out rough segmentation into multiple close limits according to spectral region
Spectral band, multiple collimator and extender mirrors 5 are entered by different output optical fibres, and the multiple circle light beam after expanding is respectively through multiple
The shaping of cylindrical lens 6 turns into the linear beam of a plurality of level, is incident to each corresponding virtual image phased array device 7 and produces wide-angle
Angle dispersion, form the separate hyperfine spectrum wave band window in multiple spaces, it is incident after being converged by each corresponding condenser lens 8
Onto each photodetector array 9, the luminous intensity to spatial distribution carries out opto-electronic conversion, and is input to processing unit 10 and carries out
Collection and treatment, finally calculate the spectral information of a wide scope spectral band.
Embodiment 3：The parallel spectral measurement schematic device of the spatio-temporal synergy high precision wide range switched using photoswitch
As shown in figure 3, the light that light source 1 sends (freely composes optical fiber through narrow Fabry-perot optical fiber scanning interferometer device 2 of freely composing by narrow
Method amber scanning interferometer device driver 3 is controlled) wavelength division multiplexer 11 is reached, carry out rough segmentation into multiple spectrum ripples according to spectral region
Section, the spectral band of one of close limit is gated by photoswitch 12, into collimator and extender mirror 5, the circular light after expanding
Beam turns into the linear beam of a plurality of level through the shaping of cylindrical lens 6, is incident to the role that virtual image phased array device 7 produces wide-angle
Dissipate, form the separate hyperfine spectrum wave band window in space, incided after being converged by condenser lens 8 on photodetector array 9,
Luminous intensity to spatial distribution carries out opto-electronic conversion, and is input to processing unit 10 and is acquired and processes, and finally calculates one
Wide scope spectral band spectral information.
Embodiment 4：The parallel spectral measurement method of spatio-temporal synergy high precision wide range
As shown in figure 1, the light that light source 1 sends (freely composes optical fiber through narrow Fabry-perot optical fiber scanning interferometer device 2 of freely composing by narrow
Method amber scanning interferometer device driver 3 is controlled) modulation after reach wave filter 4, it is filtered after obtain flashlight；Extracted in flashlight
Go out a spectral band for close limit, enter into output optical fibre, be transferred on collimator and extender mirror 5, light shaping is turned into circular light
Beam is transmitted to cylindrical mirror 6.Circular light beam is focused on through cylindrical mirror 6 turns into linear beam, reenters and is incident upon virtual image phased array device 7, produces
The angle dispersion of raw wide-angle, forms the separate hyperfine spectrum wave band window in space.As shown in figure 4, ordinate represents space bit
Put, the separate hyperfine spectrum wave band window in the space that virtual image phased array device 7 is constituted is incided after condenser lens 8 is assembled
On photodetector 9, each hyperfine spectrum wave band window and the narrow free spectrum model for freely composing Fabry-perot optical fiber scanning interferometer device
Enclose (FSR) size to match, occupy the pixel quantity of photodetector array 9 for 2~18；Abscissa represents time location, narrow
Freely composing Fabry-perot optical fiber scanning interferometer device scanning comb spectrum can be controlled by narrow Fabry-perot optical fiber scanning interferometer device driver 3 of freely composing
It is scanned in time-domain, its scanning wavelength scope is a Free Spectral Range (FSR).Each Free Spectral Range (FSR)
Each hyperfine spectrum wave band window size matches, and Real-Time Optical can be received by the pixel on photodetector array 9
Strong information is simultaneously converted into electric signal input processing unit 10, and each all pixel occupied by hyperfine wave band window is tired out
Plus calculate, freely compose what is obtained when Fabry-perot optical fiber scanning interferometer device carries out time sweep by narrow as in the hyperfine wave band window
The luminous intensity inscribed at one, so as to record the spectral information of each hyperfine wave band window.10 pairs of light electrical resistivity surveys of processing unit
The electric signal for surveying the output of device array 9 is acquired, and the photodetector array for obtaining the different hyperfine wave band windows of correspondence is different
The time domain scan values of locus pixel, then carry out spatio-temporal synergy to all of pixel, you can obtain a plurality of spectral information.By
Then interior scanning is freely composed in the narrow of each hyperfine wave band window, while being again that the hyperfine wave band window synchronization of multiple wave bands is swept
Retouch, it is achieved that the parallel spectral measurement of the high precision wide range to a plurality of spectral line.
Embodiment 5：Applicating example
Disclosure is particularly well suited to the comb δ function formula measurement of the narrow spectrum width of the WGM resonant modes of light microfluid sensor.Such as Fig. 5 institutes
Show, this spectral line is the comb δ function formula of the narrow spectrum width of the WGM resonant modes of light microfluid sensor, be characterized in that there is Q values very high
(up to 107), therefore spectral line is extremely thin sharp, it is necessary to carry out high-precision spectral measurement.Meanwhile, in order to meet multichannel light miniflow
The high pass measurement demand for development of body sensor is, it is necessary to reach tens nanometers of spectral measurement ranges.Connect using apparatus of the present invention
Receive the comb δ function formula of the narrow spectrum width of the WGM resonant modes of light microfluid sensor, by the high precision wide range of spatio-temporal synergy and
Row Spectroscopy procedures, finally can obtain its high accuracy spectral information in a wide range in processing unit.
Claims (8)
1. the high-precision spectral measurement device of a kind of spatio-temporal synergy, it is characterised in that the device includes light source (1), narrow freely composes
Fabry-perot optical fiber scanning interferometer device (2), narrow Fabry-perot optical fiber scanning interferometer device driver (3), spectrum generating unit, the collimation freely composed expand
Shu Jing (5), cylindrical lens (6), virtual image phased array device (7), condenser lens (8), photodetector array (9) and treatment are single
First (10)；
The light that light source (1) sends is obtained through narrow Fabry-perot optical fiber scanning interferometer device (2) arrival spectral band generating unit of freely composing
Flashlight；A spectral band for close limit is extracted in flashlight, collimator and extender mirror (5) is entered by output optical fibre, expanded
Circular light beam after beam turns into horizontal linear beam through cylindrical lens (6) shaping, is incident to virtual image phased array device (7) generation
The angle dispersion of wide-angle, forms the separate hyperfine spectrum wave band window in space, and photoelectricity is incided after being converged by condenser lens (8)
On detector array (9), carry out opto-electronic conversion to the luminous intensity of spatial distribution, and be input to processing unit (10) be acquired and
Treatment, finally calculates the spectral information of tested close limit spectral band, and the spectral band generating unit is by wavelength-division multiplex
Device（11）Constitute, reach wavelength division multiplexer carries out rough segmentation into the spectral band of multiple close limits according to spectral region.
2. such as claim1The high-precision spectral measurement device of described spatio-temporal synergy, it is characterised in that the multiple close limit
Spectral band enter multiple collimator and extenders mirror (5) by different output optical fibres, after the multiple-channel output of formation is expanded respectively again
Circular light beam through cylindrical lens (6) shaping turn into horizontal linear beam, be incident to respectively virtual image phased array device (7) generation
The angle dispersion of wide-angle, forms the separate hyperfine spectrum wave band window in space, is incided after being converged by condenser lens (8) respectively
On photodetector array (9), the luminous intensity to spatial distribution carries out opto-electronic conversion, and is separately input to processing unit (10) and enters
Row collection and treatment, finally calculate the spectral information of tested close limit spectral band respectively.
3. the high-precision spectral measurement device of spatio-temporal synergy as claimed in claim 1, it is characterised in that the spectral band hair
Raw unit is made up of wavelength division multiplexer (11) and photoswitch (12), and the light that the wavelength division multiplexer (11) will reach is according to spectrum model
Enclosing carries out rough segmentation into multiple spectral bands；The photoswitch (12) gates the spectral band of one of close limit, by output
Optical fiber enters collimator and extender mirror (5).
4. the high-precision spectral measurement method of a kind of spatio-temporal synergy, it is characterised in that the method includes step in detail below：
The light that step (1), wideband light source send freely composes Fabry-perot optical fiber scanning interferometer device by Optical Fiber Transmission to narrow, through narrow
Freely compose the high-fineness of Fabry-perot optical fiber scanning interferometer device generation, narrow comb spectrum of freely composing and modulate that to form the light with comb spectrum defeated
Go out；
Step (2), the optical signal input spectrum wave band generating unit with comb spectrum, extract a spectrum ripple for close limit
Section, enters into output optical fibre；
The collimated beam expanding lens of step (3), the output light of output optical fibre forms collimated light beam, incides after cylindrical lens in level side
To convergence, linear beam outgoing is formed；
Step (4), linear beam incide virtual image phased array device, launch outgoing according to wavelength dispersion in vertical direction, then
Line focus lens are assembled, so that virtual image phased array device constitutes the separate hyperfine wave band window in space；
Step (5), converging light project photodetector array, and each hyperfine wave band window occupies photodetector array number
Measure the pixel for 2~18；
Step (6), it is narrow freely compose that Fabry-perot optical fiber scanning interferometer device driver drives are narrow freely to compose Fabry-perot optical fiber scanning interferometer device, drive
Dynamic comb spectrum is scanned, so as to carry out the parallel spectral line scanning of time-domain in each hyperfine spectrum wave band window；Correspondence is every
The photodetector array pixel of individual hyperfine wave band window simultaneously by optical signal converted electrical number, to each hyperfine wave band window
Mouthful occupied all pixels carry out accumulation calculating, used as freely composing Fabry-perot optical fiber scanning interferometer by narrow in the hyperfine wave band window
Device carries out the luminous intensity inscribed at one obtained during time sweep, so as to the spectrum for recording each hyperfine wave band window is believed
Breath；
Step (7), processing unit are acquired to the electric signal that photodetector array is exported, and obtain photodetector array not
Then the data that spatio-temporal synergy is obtained are carried out calculating a plurality of spectral information of acquisition by the time domain scan values of isospace position；Due to
It is freely to compose interior scanning in the narrow of each hyperfine wave band window, while being again that the hyperfine wave band window synchronization of multiple wave bands is swept
Retouch, it is achieved that the parallel spectral measurement of the high precision wide range to a plurality of spectral line.
5. the high-precision spectral measurement method of spatio-temporal synergy as claimed in claim 4, it is characterised in that in the step (2)
In, spectral band generating unit extracts a spectral band for close limit by wave filter in flashlight, by output light
Fibre enters collimator and extender mirror.
6. the high-precision spectral measurement method of spatio-temporal synergy as claimed in claim 4, it is characterised in that in the step (2)
In, arrival wavelength division multiplexer is carried out rough segmentation into multiple by spectral band generating unit by wavelength division multiplexer according to spectral region
The spectral band of close limit.
7. the high-precision spectral measurement method of spatio-temporal synergy as claimed in claim 6, it is characterised in that the multiple close limit
Spectral band enter multiple collimator and extender mirrors by different output optical fibres, the multiple-channel output of formation expand respectively again after circle
Shaped light beam turns into horizontal linear beam through cylindrical lens shaping, and the angle that virtual image phased array device produces wide-angle is incident to respectively
Dispersion, forms the separate hyperfine spectrum wave band window in space, and photodetector battle array is incided after being converged by condenser lens respectively
On row, the luminous intensity to spatial distribution carries out opto-electronic conversion, and is separately input to processing unit and is acquired and processes, final point
The spectral information of tested close limit spectral band is not calculated.
8. the high-precision spectral measurement method of spatio-temporal synergy as claimed in claim 7, it is characterised in that in the step (2)
In, the light for reaching wavelength division multiplexer is carried out into rough segmentation into multiple spectrum ripples according to spectral region in spectral band generating unit
Section, the spectral band of one of close limit is gated by photoswitch, and collimator and extender mirror is entered by output optical fibre.
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