实验研究了布里渊室的几何效应。
Effects of Brillouin cell geometry have been studied experimentally.
提出了采用双边缘技术测量光纤传感中的布里渊频移。
The measure error analysis of Brillouin scattering based on edge detecting technology;
测量了布里渊频移及能量转换率,对所观察现象进行了讨论。
Brillouin frequency and coefficient of energy transfer was measured. The phenomenon observed was discussed in the paper briefly.
提出了采用边缘光滤波器来测量光纤传感中布里渊频域的方案。
The scheme of measuring Brillouin frequency shift in fiber sensor based on edge optical filter is proposed.
在第一布里渊区中出现的杂质带的反常色散实际上是能带折叠的结果。
In fact, the seemingly anomalous dispersion of the impurity band in the first Brillouin zone is a result from band folding.
理论上,通过数值计算得出增大声子损耗能够提高布里渊阈值的结论;
By numerical calculations, we conclude that increasing phonon loss can improve SBS threshold.
这些结果表明锗导带能谷不在布里渊区中心,且具有非球形对称等能面。
Our results indicate that the energy valley of conduction band of Ge is not lying in the center of Brillouin zone and the constant energy surface possesses non-spherical symmetry.
计算表明:在布里渊区边界,界面波有强烈的散射,而在色散曲线上形成间隙。
The calculation shows that the interface modes are strongly scattered at the boundaries of Brillouin Zones, and the band gaps are formed in the dispersion curves of the interface modes.
讨论了微波外差式光纤布里渊传感系统的信号检测原理、参数选择和系统性能。
The signal detection principle, preferences and the system performance are discussed in optical fiber Brillouin sensing system based on microwave heterodyne technique.
接下来讨论了石英光纤的布里渊增益特性,为后续的计算工作奠定理论上的基础。
After that, we discuss the silica fiber's Brillouin scatter in order to found a theory basis for the following work.
采用边缘探测技术测量布里渊频移量的误差会对海表温度测量精度带来很大影响。
The error of measuring Brillouin frequency shift based on brim detecting technology has great influence on the measurement precision of sea surface temperature.
采用边缘探测技术测量布里渊频移量的误差会对海表温度测量精度带来很大影响。
The Brillouin lidar system for remote sensing of the ocean based on the edge technique is accurate.
研究了在各种CS_2介质波导中受激布里渊后向散射的模式特性以及脉宽压缩现象。
The mode characteristics and the pulse compression phenomenon of backward stimulated Brillouin scattering (SBS) in CS2 light waveguide of different sizes are investigated.
分析了影响布里渊频移测量精度的因素,给出了布里渊频移测量精度和信噪比的关系。
The factors affecting on the measurement accuracy of Brillouin frequency shift are analyzed, the relation between the measurement of Brillouin frequency shift and signal to noise (SNR) is obtained.
报道了基于布里渊光纤环形激光器的可控光学延时线,通过两段串联光纤获得了较大的延时。
A controllable optical delay line using a Brillouin optical fiber ring laser is demonstrated and a large time delay is obtained by cascading two optical fiber segments.
所以,在相同信噪比下,与常规检测技术相比,边缘检测技术可以大大提高布里渊频移测量精度。
So, for the same SNR, edge techniques can improve the measurement accuracy of Brillouin frequency shift greatly comparing with the conventional detection techniques.
在研究二维八面准晶体的物理性质中,介电、压电、弹性、光弹、拉曼和布里渊张量是很重要的。
In studying the physical properties of two-dimensional octagonal quasicrystals, electric susceptibility, piezoelectric, elastic, photoelastic, Raman and Brilliuin tensors are important.
用简单数学方法就体心立方晶格和面心立方晶格证明了三维情况下布里渊区体积等于倒格子原胞体积。
It is proved that the volume of Brillouin zone and that of the reciprocal lattice primitive cell are equal for BCC lattice and FCC lattice in three dimensions by a simple mathematical method.
提出了一种同时测量布里渊频移和功率变化的新方案,同时对系统的布里渊频移测量精度进行了分析。
Proposed a novel scheme to measure the Brillouin frequency shift and power change, and analyzed the measurement accuracy of Brillouin frequency shift.
给出了吸收谱线在不同中心频率、不同谱线宽度情况下,归一化信号S与布里渊频移 之间的函数图。
The resulting signals ratio S is plotted in a series of figures under different center frequencies and different widths of the absorption lines.
其次,在给定工作频率的情况下,分析了不同纵向波矢量和不同调制系数时的横向波矢量间布里渊区色散特性。
Secondly, when the operation frequency is given, the dispersion relation between transverse wave vectors were analyzed with various longitudinal wave vector or modulation coefficients.
阐述了光纤陀螺中光纤环的的作用和绕制技术,介绍了布里渊光时域反射计(BOTDR)的工作原理和性能。
The winding technology of fiber coil used in fiber optic gyroscope was demonstrated. The principle and application of Brillouin Optical Time Domain Reflectometer (BOTDR) were introduced.
与普通单模光纤相比,小纤芯pcf具有非线性效应强、布里渊增益大的特点,适合作为布里渊光纤激光器的增益介质。
Compared with common single mode fiber, the small core PCF has higher non-linear coefficient and larger Brillouin gain, and is suitable for the gain medium of Brillouin fiber laser.
理论和实验研究了相遇时间对双布里渊放大池放大控制脉冲波形的影响,得到了不同相遇时间下,脉冲波形随双池间距的变化规律。
Effects of encounter time on pulse shapes are theoretically and experimentally researched, and pulse shapes versus the distance between the two amplifiers are achieved with various encounter .
我们对温度控制光纤受激布里渊慢光大小的可行性进行了理论讨论和实验验证,找到了温度敏感系数在布里渊增益峰附近的变化曲线。
The possibility of controlling the slow light using temperature is demonstrated theoretically and experimentally. The curve of temperature coefficient around Brillouin gain peak is also presented.
介绍了布里渊光时域反射计(BOTDR)的分布式光纤应变测量原理,并应用BOTDR技术对钢筋混凝土T型梁加载后的应变分布进行了测量。
The principle of Brillouin optical time domain reflectometer (BOTDR) is introduced and its application to the strain monitoring of the strain distribution of the reinforced concrete beam is studied.
介绍了布里渊光时域反射计(BOTDR)的分布式光纤应变测量原理,并应用BOTDR技术对钢筋混凝土T型梁加载后的应变分布进行了测量。
The principle of Brillouin optical time domain reflectometer (BOTDR) is introduced and its application to the strain monitoring of the strain distribution of the reinforced concrete beam is studied.
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