Given the shortness of magnetic field sensing scheme of LPFG and magnetofluid toward temperature change,the thesis prompts the sensing scheme which employs magnetofluid and two LPFG with different effective thermo-opt...
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Given the shortness of magnetic field sensing scheme of LPFG and magnetofluid toward temperature change,the thesis prompts the sensing scheme which employs magnetofluid and two LPFG with different effective thermo-optical coefficients on *** variation was obtained by calculating the difference between the resonant wavelengths of two long period fiber gratings,and the result was afterwards *** analysis shows that the relationship between temperature variation and the refractive index of magnetofluid and the resonant wavelength of long-period fiber *** simulation system shows that:if the variation of external temperature is within 14 oC,the gained relative error of temperature is 1.567%in maximum that the precision for magnetic field intensity increased at least 78.6476%than the sensing scheme of magnetic field adopting LPFG and magnetofluid.
An information fusion method based on principal component analysis(PCA) was proposed for the spatial,spectral and poalrization information fusion taken by the imaging *** fusion method inspired by the local moving win...
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An information fusion method based on principal component analysis(PCA) was proposed for the spatial,spectral and poalrization information fusion taken by the imaging *** fusion method inspired by the local moving window and PCA was used to combine the different information coded in each image *** the fusion procedure,the noise part was recognised and surppressed *** provides us an alternative approach to implement the various optical information fusion.
This paper introduces the automatic measurement system of laser scattering method based on angular *** the principle of laser in optical element surface scattering,propose the method which use angle resolved scatterin...
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This paper introduces the automatic measurement system of laser scattering method based on angular *** the principle of laser in optical element surface scattering,propose the method which use angle resolved scattering(ARS)method to measure surface roughness,at the same time the measurement principle experimental platform is built based on the experimental results after verifying the correctness of the angle resolved scattering method.
High resolution and large FOV represents the developing trends of space optical imaging systems,Considering the characters of infrared optical systems,A low cost and low technical risk method of optical butting concep...
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High resolution and large FOV represents the developing trends of space optical imaging systems,Considering the characters of infrared optical systems,A low cost and low technical risk method of optical butting concept which offer the promise of butting smaller arrays into long linear detector assemblies is presented in this paper,the design method of optical butting is described,and a hypothetical system is demonstrated as well.
In recent years,with the development of modern optics and laser technology,modern industry for optical surface roughness measurement precision of the increasingly high demand,real-time,fast and precise measurement of ...
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In recent years,with the development of modern optics and laser technology,modern industry for optical surface roughness measurement precision of the increasingly high demand,real-time,fast and precise measurement of surface roughness has become constant subject of optical components in processing and *** this paper,the current method of measuring the surface roughness of optical components were described in detail,including light scattering method,interferometric method,speckle method,and optical stylus ***,the principles and characteristics of different methods were introduced respectively.
A new method named as Segment-Compound baffle design method was proposed in this *** with conventional methods,this new method could perform better in inhibit stay light more effectively and it could be designed easil...
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A new method named as Segment-Compound baffle design method was proposed in this *** with conventional methods,this new method could perform better in inhibit stay light more effectively and it could be designed easily by geometry.
It analyzed the factors affecting the Operational Data Quality,determined the evaluation index system,set up Operational Data Quality evaluation element and evaluating network,established the six-element evaluation **...
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It analyzed the factors affecting the Operational Data Quality,determined the evaluation index system,set up Operational Data Quality evaluation element and evaluating network,established the six-element evaluation *** Rough Set theory come to realize information reduction and using BP Neural Network theory come to realize quality *** method could enhance the scientificity and objectivity of *** results showed that the evaluation method of error was small,simple and practical.
Recently launched spaceborne remote sensors with short-wave infrared(SWIR) spectrum were *** and benefits of uncooled or TE cooling InGaAs sensor were analyzed.A remote sensing imaging system with visible and SWIR spe...
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Recently launched spaceborne remote sensors with short-wave infrared(SWIR) spectrum were *** and benefits of uncooled or TE cooling InGaAs sensor were analyzed.A remote sensing imaging system with visible and SWIR spectrums using CCD and InGaAs sensors in one optical system was modeled and *** on comparsion of visible and SWIR images,the application of SWIR spectrum was proposed.
The reflection phase properties of one dimensional photonic crystals with negative-index materials is investigated by transfer matrix *** is demonstrated that the reflection phase in zero average refractive index band...
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The reflection phase properties of one dimensional photonic crystals with negative-index materials is investigated by transfer matrix *** is demonstrated that the reflection phase in zero average refractive index band gap is influenced by the incident angle,polarization and thickness ratio,it is independent on the proportion of *** characteristic may be useful for making photonic crystal phase compensators and the dispersion compensators.
The performance of radio frequency(RF) excited He-Ne laser are *** text sets out from kinetics property of the electronics inside the high frequency,getting the relationship between radio frequency and plasma *** also...
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The performance of radio frequency(RF) excited He-Ne laser are *** text sets out from kinetics property of the electronics inside the high frequency,getting the relationship between radio frequency and plasma *** also obtains the optimal RF frequency through experiment,which has important reference value to the design of RF excited He-Ne laser.
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