Resonator micro-optic gyro (R-MOG) sensing rotation angular-velocity is based on Sagnac effect.We present a frequency modulation (FM) induced by the analog triangle-waveform phase modulation (ATAW-PM) technique in an ...Resonator micro-optic gyro (R-MOG) sensing rotation angular-velocity is based on Sagnac effect.We present a frequency modulation (FM) induced by the analog triangle-waveform phase modulation (ATAW-PM) technique in an R-MOG.Compared with the traditional serrodyne phase modulation or digital phase modulation methods,the proposed modulation technique has the intrinsic advantage in free of sweeping-back or step-effect induced pulse noise.The influence on dynamic range and resolution of the R-MOG by the parameters of analog trianglewaveform is theoretically analyzed.Experiments are carried out on an R-MOG composed of an integrated optic resonator with a free spectral range (FSR) and a fitness (F) of 1.6GHz and 61,respectively.Dynamic range of ±500 deg/s and bias drift of 0.6 deg/s over 1 h and 0.05 deg/s for 60 s are reliably obtained.展开更多
A novel micro resonator optic gyroscope comprising a dual-resonator structure is proposed.This design radically eliminates the noise induced by Rayleigh backscattering,the Kerr effect and polarization coupling.The con...A novel micro resonator optic gyroscope comprising a dual-resonator structure is proposed.This design radically eliminates the noise induced by Rayleigh backscattering,the Kerr effect and polarization coupling.The configuration of the micro optic gyroscope(MOG)is given and described.Three methods are applied to suppress the optical noises in the system and to theoretically analyze the performance improvement.Experiments are carried out on both dual-resonator and single-resonator MOGs,which show the resonance depth improvement from 0.7477 to 0.9173 in the present MOG dual-resonator configuration.展开更多
Two novel heteronuclear manganese-dysprosium complexes have been synthesized and characterized, both of which contain a [Mn_2Dy_2O_2] core ligated by eight But CO_2-anions and four neutral ligands. In complex 1, [Mn_2...Two novel heteronuclear manganese-dysprosium complexes have been synthesized and characterized, both of which contain a [Mn_2Dy_2O_2] core ligated by eight But CO_2-anions and four neutral ligands. In complex 1, [Mn_2Dy_2O_2(Bu^tCO_2)_8(Bu^tCO_2H)_4], all the four neutral ligands coordinated to Dy^(3+) are pivalic acids; Instead, two of these four pivalic acids have been replaced by ethanol in complex 2 [Mn2 Dy2 O2(Bu^tCO_2)_8(Bu^tCO_2H)_2(CH_3CH_2OH)_2]. The crystal of complex 1(C_(60)H_(112)Dy_2Mn_2O_(26), Mr = 1684.36) belongs to the orthorhombic system, space group Pbca with a =19.853(3), b = 18.565(3), c = 20.952(3) ?, V = 7723(2) ?3, Z = 4, Dc = 1.449 g/cm^3, S = 1.210, μ =2.302 mm^(-1), F(000) = 3448, the final R = 0.0802 and w R = 0.1570 for 8736 independent reflections.The crystal of complex 2(C_(54)H_(104)Dy_2Mn_2O_(24), Mr = 1572.25) belongs to the monoclinic system,space group C2/c with a = 27.814(6), b = 13.194(3), c = 22.912(5) ?, β = 124.89(3)o, V = 6897(3) ?3,Z = 4, Dc = 1.514 g/cm^3, S = 1.086, μ = 2.570 mm^(-1), F(000) = 3208, the final R = 0.0256 and wR =0.0592 for 7763 independent reflections. The cyclic voltammogram and catalytic activity measurements of complex 1 suggest that this type of complex can serve as a catalyst for oxygen-evolving reaction.展开更多
The imaging quality using two-detector arbitrary N th-order intensity correlation in optics is investigated.It is theoretically demonstrated that with the order of intensity correlation N increases,the visibility of t...The imaging quality using two-detector arbitrary N th-order intensity correlation in optics is investigated.It is theoretically demonstrated that with the order of intensity correlation N increases,the visibility of the retrieved image enhances promptly;and different n-fold intensity on one arm of the intensity correlation leads to different visibility,whereas the resolution is independent of N and n.The numerical simulation results are shown to be consistent with our theoretical analysis results.Furthermore,a particular imaging system of the two-detector N thorder Hanbury-Brown-Twiss(HBT)type ghost diffraction is conceived by using a slit as the object,the image quality by this type of ghost diffraction is investigated.The experimental results coincide with our theoretical analysis.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 50875015.
文摘Resonator micro-optic gyro (R-MOG) sensing rotation angular-velocity is based on Sagnac effect.We present a frequency modulation (FM) induced by the analog triangle-waveform phase modulation (ATAW-PM) technique in an R-MOG.Compared with the traditional serrodyne phase modulation or digital phase modulation methods,the proposed modulation technique has the intrinsic advantage in free of sweeping-back or step-effect induced pulse noise.The influence on dynamic range and resolution of the R-MOG by the parameters of analog trianglewaveform is theoretically analyzed.Experiments are carried out on an R-MOG composed of an integrated optic resonator with a free spectral range (FSR) and a fitness (F) of 1.6GHz and 61,respectively.Dynamic range of ±500 deg/s and bias drift of 0.6 deg/s over 1 h and 0.05 deg/s for 60 s are reliably obtained.
基金by the National Natural Science Foundation of China under Grant No 50875015.
文摘A novel micro resonator optic gyroscope comprising a dual-resonator structure is proposed.This design radically eliminates the noise induced by Rayleigh backscattering,the Kerr effect and polarization coupling.The configuration of the micro optic gyroscope(MOG)is given and described.Three methods are applied to suppress the optical noises in the system and to theoretically analyze the performance improvement.Experiments are carried out on both dual-resonator and single-resonator MOGs,which show the resonance depth improvement from 0.7477 to 0.9173 in the present MOG dual-resonator configuration.
基金supported by the National Key Research and Development Program of China(No.2017YFA0503704)the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB17030600)National Natural Science Foundation of China(No.31770258)
文摘Two novel heteronuclear manganese-dysprosium complexes have been synthesized and characterized, both of which contain a [Mn_2Dy_2O_2] core ligated by eight But CO_2-anions and four neutral ligands. In complex 1, [Mn_2Dy_2O_2(Bu^tCO_2)_8(Bu^tCO_2H)_4], all the four neutral ligands coordinated to Dy^(3+) are pivalic acids; Instead, two of these four pivalic acids have been replaced by ethanol in complex 2 [Mn2 Dy2 O2(Bu^tCO_2)_8(Bu^tCO_2H)_2(CH_3CH_2OH)_2]. The crystal of complex 1(C_(60)H_(112)Dy_2Mn_2O_(26), Mr = 1684.36) belongs to the orthorhombic system, space group Pbca with a =19.853(3), b = 18.565(3), c = 20.952(3) ?, V = 7723(2) ?3, Z = 4, Dc = 1.449 g/cm^3, S = 1.210, μ =2.302 mm^(-1), F(000) = 3448, the final R = 0.0802 and w R = 0.1570 for 8736 independent reflections.The crystal of complex 2(C_(54)H_(104)Dy_2Mn_2O_(24), Mr = 1572.25) belongs to the monoclinic system,space group C2/c with a = 27.814(6), b = 13.194(3), c = 22.912(5) ?, β = 124.89(3)o, V = 6897(3) ?3,Z = 4, Dc = 1.514 g/cm^3, S = 1.086, μ = 2.570 mm^(-1), F(000) = 3208, the final R = 0.0256 and wR =0.0592 for 7763 independent reflections. The cyclic voltammogram and catalytic activity measurements of complex 1 suggest that this type of complex can serve as a catalyst for oxygen-evolving reaction.
文摘The imaging quality using two-detector arbitrary N th-order intensity correlation in optics is investigated.It is theoretically demonstrated that with the order of intensity correlation N increases,the visibility of the retrieved image enhances promptly;and different n-fold intensity on one arm of the intensity correlation leads to different visibility,whereas the resolution is independent of N and n.The numerical simulation results are shown to be consistent with our theoretical analysis results.Furthermore,a particular imaging system of the two-detector N thorder Hanbury-Brown-Twiss(HBT)type ghost diffraction is conceived by using a slit as the object,the image quality by this type of ghost diffraction is investigated.The experimental results coincide with our theoretical analysis.
