CN102998004B - Wavelength automatic calibration system of wavelength-adjustable light source and method of system - Google Patents
Wavelength automatic calibration system of wavelength-adjustable light source and method of system Download PDFInfo
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- CN102998004B CN102998004B CN201210594029.8A CN201210594029A CN102998004B CN 102998004 B CN102998004 B CN 102998004B CN 201210594029 A CN201210594029 A CN 201210594029A CN 102998004 B CN102998004 B CN 102998004B
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Abstract
The invention provides a wavelength automatic calibration system of a wavelength-adjustable light source and a method of the system. The wavelength automatic calibration system comprises a wavelength-adjustable light source device, an implantation focusing device, an implantation focusing fixing frame, a probing focusing device, a probing focusing fixing frame, an optical fiber, a signal collecting device and an optical filter transition mechanism. By adopting the optical filter transition mechanism, a spike filter is placed on a light path between the probing focusing device and the optical fiber, light signals pass the spike filter, only optical filter nominal wavelength passes through, when light signals capable of probing optical filter nominal wavelength are scanned, light source wavelength is optical filter nominal wavelength of the spike filter, and accordingly wavelength automatic calibration of the wavelength-adjustable light source is achieved. Compared with the prior art, the wavelength automatic calibration system of the wavelength-adjustable light source can achieve wavelength automatic calibration only by simple structural improvement, greatly improves automation degree of probing devices adopting the wavelength-adjustable light source as an implantation light source, and improves work efficiency.
Description
Technical field
The present invention relates to wavelength Automatic Calibration Technique, particularly a kind of wavelength automatic correction device and method thereof of Wavelength tunable light source.
Background technology
Existing Wavelength tunable light source, as the monochromator with halogen tungsten lamp light source, in test macro, it plays the narrow spectrum light source (if spectrum width is 1nm) of output wavelengthtunable, and the light source of wavelengthtunable is using the injection light source as test macro simultaneously, and the accuracy of its wavelength will affect the accuracy of test parameter.Visible, the accuracy of optical source wavelength is most important for the accuracy of test result.
And the calibration of existing wavelength tunable light source wavelength mainly contains following several calibration steps:
1, spectrometer is calibrated
Light source input is coupled light in spectrometer, determine the initial wavelength of light source, thereby reach the effect of calibration wavelength.
Fig. 1 has shown the schematic diagram that utilizes spectrometer calibration wavelength tunable light source wavelength in prior art.As shown in Figure 1, Wavelength tunable light source 11 produces light source, and light source input is optically coupled in spectrometer 15 by coupled lens 12, optical fiber 13 and fiber adapter 14.In this calibration steps, must first carry out calibration in advance to Wavelength tunable light source, could carry out Installation and Debugging to checkout equipment.This bearing calibration belongs to debug process inspection, in actual applications, sells do not have a real operation using spectrometer as accessory together with checkout equipment.
2, utilize sample to there is special effect to reach the Wavelength calibration of Wavelength tunable light source to the light of certain wavelength.
For example, be 1383nm as the absorption peak of OH-in the optical fiber of sample.Fig. 2 has shown and has utilized in the prior art the calibration schematic diagram that the absorption peak of OH-in optical fiber is characteristic for 1383nm.As shown in Figure 2, in test, adopt and there is water peak (as thering is precipitous curve in Fig. 2, wherein the summit of curve is water peak 1383nm) optical fiber carry out the scanning of wide range, the absorption peak of a discontinuous high loss and 1383nm are carried out to the Wavelength calibration of system spectrum, thereby reach the Wavelength calibration of Wavelength tunable light source.But, but improving constantly due to optical fiber performing technology, can be good at controlling the content of the OH-in optical fibre rod, make to greatly reduce the height (as being overstriking and mild curve in Fig. 2) at optical fiber water peak, the wavelength calibration of test macro is played to certain difficulty.Performance based on this type of due to sample has improved or has changed, and will have influence on the calibration difficulty of system wavelength.
1), calibration steps is cumbersome as from the foregoing, the problem that existing calibration steps exists is as follows:; 2), calibration process is subject to the impact of sample quality; 3), need to adopt utility appliance, cannot carry out automatic calibration to testing apparatus.
Summary of the invention
The object of the present invention is to provide a kind of wavelength automated calibration system and method thereof of Wavelength tunable light source, for solving, prior art automatic calibration complex operation and complexity are high, the impact that is subject to sample quality or adopt the problems such as extra utility appliance.
For addressing the above problem and other problems, the present invention provides a kind of wavelength automated calibration system of Wavelength tunable light source on the one hand, comprise: wavelength tunable light source apparatus, inject focalizer, focus on fixed mount for the injection of carrying described injection focalizer, survey focalizer, focus on fixed mount for the detection of carrying described detection focalizer, connect the optical fiber of described injection focalizer and described detection focalizer, signal pickup assembly, and in the light path between described detection focalizer and described optical fiber, dispose the optical filter throw-over gear of narrow band pass filter, utilize described optical filter throw-over gear, described narrow band pass filter is placed in the light path between described detection focalizer and described optical fiber, light signal only allows optical filter nominal wavelength pass through after by described narrow band pass filter, in the time scanning the light signal that can detect as described optical filter nominal wavelength, the optical source wavelength that described Wavelength tunable light source sends is the optical filter nominal wavelength of described narrow band pass filter, thereby completes the wavelength automatic calibration of described wavelengthtunable light source.
Alternatively, described wavelength tunable light source apparatus comprises: wide spectrum light source generation device, for generation of wide spectrum light source; Wavelength separated device, for isolating the wide spectrum light source that is received from described wide spectrum light source generation device in the extremely narrow monochromatic light of wavelength coverage.
Alternatively, described wavelength separated device is monochromator.
Alternatively, described optical filter throw-over gear comprises: optical filter fixed mount; Be located at the narrow band pass filter on described optical filter fixed mount; Be located at the light hole on described optical filter fixed mount; Be located at the motor fixing frame on described optical filter fixed mount; And be located at the motor on described motor fixing frame; Utilize motor, drive the activity of described optical filter fixed mount, described narrow band pass filter and the described light hole realized on described optical filter fixed mount are placed in the conversion in the light path between described detection focalizer and described optical fiber.
Alternatively, described optical filter fixed mount is discoid, and described narrow band pass filter and described light hole are located at respectively on the edge of described optical filter fixed mount, and the line of described narrow band pass filter and described light hole is a diameter of described optical filter fixed mount; Utilize described motor, drive described optical filter fixed mount rotation to carry out the conversion of described narrow band pass filter and described light hole.
Alternatively, the center of the center of described narrow band pass filter and described detection focalizer aligns.
Alternatively, the wavelength of described narrow band pass filter is 1064nm ± 0.5nm.
The present invention provides a kind of wavelength automatic calibrating method that is applied to wavelength automated calibration system as above on the other hand, comprising: the optical filter throw-over gear of disposing narrow band pass filter is provided; In the time that described Wavelength tunable light source is carried out to Wavelength calibration, utilize described optical filter throw-over gear that described narrow band pass filter is placed in the light path between described detection focalizer and described optical fiber, light signal only allows optical filter nominal wavelength pass through after by described narrow band pass filter, in the time scanning the light signal that can detect as described optical filter nominal wavelength, the optical source wavelength that described Wavelength tunable light source sends is the optical filter nominal wavelength of described narrow band pass filter, thereby completes the wavelength automatic calibration of described wavelengthtunable light source.
Alternatively, the center of the center of described narrow band pass filter and described detection focalizer aligns.
Alternatively, described optical filter throw-over gear is provided with light hole; In the time carrying out parameter detecting, utilize described optical filter throw-over gear that described light hole is placed in the light path between described detection focalizer and described optical fiber, guarantee not change described narrow band pass filter and be placed in the light path between described detection focalizer and described optical fiber.
Wavelength automated calibration system and the method thereof of Wavelength tunable light source provided by the invention, the optical filter throw-over gear with narrow band pass filter is additionally provided, by described narrow band pass filter is placed in to light path, only allow optical filter nominal wavelength pass through, complete accordingly the wavelength automatic calibration of described wavelengthtunable light source.With respect to prior art, the present invention only needs simple structure to improve can realize wavelength automatic calibration, and greatly improves employing Wavelength tunable light source as the detecting devices automaticity of injecting light source, has improved work efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram that utilizes spectrometer calibration wavelength tunable light source wavelength in prior art.
Fig. 2 utilizes the calibration schematic diagram that the absorption peak of OH-in optical fiber is characteristic for 1383nm in prior art.
Fig. 3 is the configuration diagram of the wavelength automated calibration system of Wavelength tunable light source of the present invention.
Fig. 4 is the structural representation of optical filter throw-over gear 28 in Fig. 3.
Fig. 5 is the schematic flow sheet of the wavelength automatic calibrating method of Wavelength tunable light source of the present invention.
Element numbers explanation
11 Wavelength tunable light sources
12 coupled lens
13 optical fiber
14 fiber adapter
15 spectrometers
21 wavelength tunable light source apparatus
211 wide spectrum light source generation devices
212 wavelength separated devices
22 inject focalizer
23 inject focusing fixed mount
24 survey focalizer
25 survey focusing fixed mount
26 optical fiber
27 signal pickup assemblies
28 optical filter throw-over gears
281 optical filter fixed mounts
282 narrow band pass filters
283 light holes
284 motor fixing frames
285 motors
S301 ~ S307 step
Embodiment
The present inventor finds: the existing wavelength calibration technology that is applied to Wavelength tunable light source, exists that automatic calibration complex operation and complexity are high, the impact that is subject to sample quality or adopt the problems such as extra utility appliance.
Therefore, the present inventor improves prior art, detect in light path at original checkout equipment, add a movably narrow band pass filter, in the time need to carrying out Wavelength calibration to the light source of existing system, narrow band pass filter is moved in the middle of current detection system, then the optical source wavelength that starts variable light source continuously changes, utilize original signal detection system, survey light signal, when scanning can survey light signal time, optical source wavelength is now the logical optical wavelength of narrow band pass filter, carries out accordingly the wavelength calibration of Wavelength tunable light source.
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention can also be implemented or be applied by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
One aspect of the present invention provides a kind of wavelength automated calibration system of Wavelength tunable light source.Refer to Fig. 3, shown the configuration diagram of the wavelength automated calibration system of Wavelength tunable light source.As shown in Figure 3, described wavelength automated calibration system comprises: have optical fiber 26, signal pickup assembly 27 and the optical filter throw-over gear 28 in the light path between detection focalizer 24 and optical fiber 26 of wavelength tunable light source apparatus 21, injection focalizer 22, injection focusing fixed mount 23, detection focalizer 24, detection focusing fixed mount 25, connection injection focalizer 22 and the detection focalizer 24 of wide spectrum light source generation device 211 and wavelength separated device 212.
Below above-mentioned each device is elaborated.
Wavelength tunable light source apparatus 21 is for generation of Wavelength tunable light source.Particularly, wide spectrum light source generation device 211, for generation of wide spectrum light source.Wavelength separated device 212, for carrying out the wide spectrum light source that is received from wide spectrum light source generation device 211 light-splitting processing to isolate the extremely narrow monochromatic light of wavelength coverage.In the present embodiment, wavelength separated device 212 can be selected monochromator.
Inject focalizer 22 for the light source of wavelength separated device 212 light-splitting processing being focused on and is injected into as the optical fiber 26 of test sample.In the present embodiment, optical fiber 26 is to be connected in as the test sample of light sources transmit medium to inject focalizer 22 and inject focalizer 22, in actual applications, one end of optical fiber 26 is to be installed in to inject on focalizer 22, and the other end is to be installed in to inject on focalizer 22.
Inject and focus on fixed mount 23 for carrying described injection focalizer 22.
Survey focalizer 24 for be sent to signal pickup assembly 27 by focus on processing by optical fiber light source out after.
Survey and focus on fixed mount 25 for carrying detection focalizer 24.
Signal pickup assembly 27 is for gathering the light signal sending by surveying focalizer 25, so that it is detected.
Especially, the present invention is also provided with an optical filter throw-over gear 28 between detection focalizer 24 and optical fiber 26.Fig. 4 has shown the structural representation of optical filter throw-over gear 28 in the present invention.As shown in Figure 4, optical filter throw-over gear 28 comprises: optical filter fixed mount 281, be located at the narrow band pass filter 282 on optical filter fixed mount 281, be located at the light hole 283 on optical filter fixed mount 281, be located at the motor fixing frame 284 on described optical filter fixed mount 281, and be located at the motor 285 on motor fixing frame 284.In the present embodiment, optical filter throw-over gear 28 can be fixedly connected on to survey focalizer 24 or survey and focus on fixed mount 25.
Optical filter fixed mount 281 is discoid, and narrow band pass filter 282 and light hole 283 are circular configuration, and narrow band pass filter 282 and light hole 283 are located at respectively on the edge of optical filter fixed mount 281.Motor fixing frame 284 and motor 285 are middle sections of being located at optical filter fixed mount 281.In actual applications, utilize motor, can drive optical filter fixed mount 281 to rotate, thereby realize narrow band pass filter 282 and the conversion of light hole 283 in light path.Preferably, the line of being located at narrow band pass filter 282 on the edge of optical filter fixed mount 281 and light hole 283 is a diameter of optical filter fixed mount 281, like this, in the time of conversion, motor drives each time, and the rotation of 180 ° occurs optical filter fixed mount 281, simple to operate.In addition, narrow band pass filter 282 and the conversion of light hole 283 in light path, particularly, comprise: in the time carrying out parameter detecting, by motor 285 rotation location, light hole 283 is positioned in the light path of surveying between focalizer 24 and optical fiber 26, light hole 283 center aligns with surveying focalizer 24 center, does not disturb light path; In the time carrying out optical source wavelength automatic calibration, by motor 285 rotation location, narrow band pass filter 282 is positioned in the light path of surveying between focalizer 24 and optical fiber 26, narrow band pass filter 282 center aligns with detection focalizer 24 center, light signal only allows optical filter nominal wavelength pass through after by narrow band pass filter 282, optical source wavelength is now the logical optical wavelength of narrow band pass filter, utilizes this principle to carry out the wavelength calibration of wavelengthtunable light source.In the present embodiment, the wavelength of narrow band pass filter 282 is 1064nm ± 0.5nm.
The present invention also provides a kind of wavelength automatic calibrating method of Wavelength tunable light source, and described wavelength automatic calibrating method is to be applied to above-mentioned wavelength automated calibration system.Fig. 5 has shown the schematic flow sheet of the wavelength automatic calibrating method of Wavelength tunable light source of the present invention.Now, in conjunction with Fig. 3, Fig. 4 and Fig. 5, described wavelength automatic calibrating method comprises:
Step S301, provides optical filter throw-over gear 28.Optical filter throw-over gear 28 comprises: optical filter fixed mount 281, be located at the narrow band pass filter 282 on optical filter fixed mount 281, be located at the light hole 283 on optical filter fixed mount 281, be located at the motor fixing frame 284 on described optical filter fixed mount 281, and be located at the motor 285 on motor fixing frame 284.Utilize motor, can drive optical filter fixed mount 281 to rotate, thereby realize narrow band pass filter 282 and the conversion of light hole 283 in light path.
On the one hand, as step S303, in the time carrying out parameter detecting, by motor 285 rotation location, light hole 283 is positioned in the light path of surveying between focalizer 24 and optical fiber 26, light hole 283 center aligns with surveying focalizer 24 center, guarantees the not light path between interference detection focalizer 24 and optical fiber 26.
On the other hand, as step S305, in the time carrying out optical source wavelength automatic calibration, by motor 285 rotation location, narrow band pass filter 282 is positioned in the light path of surveying between focalizer 24 and optical fiber 26, narrow band pass filter 282 center aligns with surveying focalizer 24 center, and light signal only allows after by narrow band pass filter 282 optical filter nominal wavelength by (light source of other wavelength by narrow band pass filter filtering outside).
Step S307, the wavelength of scanning wavelength tripping device 212, the wavelength that starts Wavelength tunable light source continuously changes and records detection data, adopts the corresponding relation of the wavelength of software analysis detection data and wavelength separated device 212, realizes the automatic calibration of Wavelength tunable light source.
In sum, wavelength automated calibration system and the method thereof of Wavelength tunable light source provided by the invention, the optical filter throw-over gear with narrow band pass filter is additionally provided, by described narrow band pass filter is placed in to light path, only allow optical filter nominal wavelength pass through, complete accordingly the wavelength automatic calibration of described wavelengthtunable light source.With respect to prior art, the present invention only needs simple structure to improve can realize wavelength automatic calibration, and greatly improves employing Wavelength tunable light source as the detecting devices automaticity of injecting light source, has improved work efficiency.
Above-described embodiment just lists expressivity principle of the present invention and effect is described, but not for limiting the present invention.Any person skilled in the art person all can without departing from the spirit and scope of the present invention, modify to above-described embodiment.Therefore, the scope of the present invention, should be as listed in claims.
Claims (9)
1. a wavelength automated calibration system for Wavelength tunable light source, comprising: wavelength tunable light source apparatus, the optical fiber and the signal pickup assembly that inject focalizer, focus on fixed mount, survey focalizer, focus on fixed mount, connect described injection focalizer and described detection focalizer for carrying the detection of described detection focalizer for carrying the injection of described injection focalizer; It is characterized in that, described wavelength automated calibration system also comprises: in the light path between described detection focalizer and described optical fiber, the optical filter throw-over gear of disposing narrow band pass filter and light hole; Utilize described optical filter throw-over gear, described narrow band pass filter is placed in the light path between described detection focalizer and described optical fiber, light signal only allows optical filter nominal wavelength pass through after by described narrow band pass filter, in the time scanning the light signal that can detect as described optical filter nominal wavelength, the optical source wavelength that described Wavelength tunable light source sends is the optical filter nominal wavelength of described narrow band pass filter, thereby completes the wavelength automatic calibration of described wavelengthtunable light source; And in now utilizing described optical filter throw-over gear that described light hole is placed in the light path between described detection focalizer and described optical fiber, guarantee not change the light path that described narrow band pass filter is placed between described detection focalizer and described optical fiber and carry out detected parameters.
2. wavelength automated calibration system as claimed in claim 1, is characterized in that, described wavelength tunable light source apparatus comprises:
Wide spectrum light source generation device, for generation of wide spectrum light source;
Wavelength separated device, for isolating the wide spectrum light source that is received from described wide spectrum light source generation device in the extremely narrow monochromatic light of wavelength coverage.
3. wavelength automated calibration system as claimed in claim 1, is characterized in that, described wavelength separated device is monochromator.
4. wavelength automated calibration system as claimed in claim 1, is characterized in that, described optical filter throw-over gear comprises:
Optical filter fixed mount;
Be located at the narrow band pass filter on described optical filter fixed mount;
Be located at the light hole on described optical filter fixed mount;
Be located at the motor fixing frame on described optical filter fixed mount;
And be located at the motor on described motor fixing frame; Utilize motor, drive the activity of described optical filter fixed mount, described narrow band pass filter and the described light hole realized on described optical filter fixed mount are placed in the conversion in the light path between described detection focalizer and described optical fiber.
5. wavelength automated calibration system as claimed in claim 4, it is characterized in that, described optical filter fixed mount is discoid, described narrow band pass filter and described light hole are located at respectively on the edge of described optical filter fixed mount, and the line of described narrow band pass filter and described light hole is a diameter of described optical filter fixed mount; Utilize described motor, drive described optical filter fixed mount rotation to carry out the conversion of described narrow band pass filter and described light hole.
6. wavelength automated calibration system as claimed in claim 4, is characterized in that, the center of the center of described narrow band pass filter and described detection focalizer aligns.
7. the wavelength automated calibration system as described in claim 4,5 or 6, is characterized in that, the wavelength of described narrow band pass filter is 1064nm ± 0.5nm.
8. a wavelength automatic calibrating method that is applied to the wavelength automated calibration system as described in any one in claim 1 to 7, is characterized in that, comprising:
The optical filter throw-over gear of disposing narrow band pass filter and light hole is provided;
In the time that described Wavelength tunable light source is carried out to Wavelength calibration, utilize described optical filter throw-over gear that described narrow band pass filter is placed in the light path between described detection focalizer and described optical fiber, light signal only allows optical filter nominal wavelength pass through after by described narrow band pass filter, in the time scanning the light signal that can detect as described optical filter nominal wavelength, the optical source wavelength that described Wavelength tunable light source sends is the optical filter nominal wavelength of described narrow band pass filter, thereby completes the wavelength automatic calibration of described wavelengthtunable light source;
Utilize described optical filter throw-over gear that described light hole is placed in the light path between described detection focalizer and described optical fiber, guarantee not change described narrow band pass filter and be placed in the light path between described detection focalizer and described optical fiber, carry out parameter detecting.
9. wavelength automatic calibrating method as claimed in claim 8, is characterized in that, the center of the center of described narrow band pass filter and described detection focalizer aligns.
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| CN201210594029.8A CN102998004B (en) | 2012-12-31 | 2012-12-31 | Wavelength automatic calibration system of wavelength-adjustable light source and method of system |
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| CN201210594029.8A CN102998004B (en) | 2012-12-31 | 2012-12-31 | Wavelength automatic calibration system of wavelength-adjustable light source and method of system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3922095A (en) * | 1973-06-01 | 1975-11-25 | Jin G Lee | Wavelength calibrator for clinical instruments |
| GB9121658D0 (en) * | 1991-10-11 | 1991-11-27 | Optical Activity Ltd | A polarimeter |
| DE102006050421B4 (en) * | 2006-10-20 | 2010-11-25 | Bundesrepublik Deutschland, vertr. durch d. Bundesministerium f. Wirtschaft und Technologie, dieses vertreten durch d. Präsidenten d. Physikalisch-Technischen Bundesanstalt | Optical filter arrangement |
| CN101419156B (en) * | 2007-10-23 | 2012-12-05 | 深圳迈瑞生物医疗电子股份有限公司 | Spectrophotometric detecting method and apparatus , and detecting system |
| CN102575959B (en) * | 2009-10-16 | 2015-01-28 | 皇家飞利浦电子股份有限公司 | A spectral detection device for detecting spectral components of received light |
| CN101718942B (en) * | 2009-11-25 | 2011-10-26 | 北京航空航天大学 | Multi-channel fiber Bragg grating (FBG) demodulator |
| CN102269910A (en) * | 2011-07-15 | 2011-12-07 | 武汉理工光科股份有限公司 | Wavelength demodulation system and method for optical grating by using angle tuning filter |
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