基于相干光的相位编码OCD MA技术依靠光信号的相位变化,利用伪随机序列来编解码。
Based on coherent optical phase encoding OCDMA techniques rely on phase changes optical signals, using pseudo-random sequence for encoding and decoding.
提出外部光注入半导体激光器混沌相位控制方法,通过周期调制注入光的相位相移将激光器的混沌控制到多种周期状态。
In this paper, a method of chaotic controlling is presented via controlling the phase in semiconductor lasers under to external optical injection.
随后用激光穿过第一块透镜,导致两块透镜之间发生的时间周围的光产生弥散,随后光通过第二块时间透镜回到初始相位。
This dispersed the light around the events happening between the lenses. The light then passed through the second split time lens and returned to its original phase.
对两束相干光写入稳态相位栅的衍射效率进行数值模拟,发现在某一角度范围内衍射效率有一最大值存在。
Diffraction efficiency was simulated theoretically in the stable state phase during the double coherent light coupling and a maximum value of diffraction efficiency was discovered in some Angle scope.
建立高精度的相位-高度映射关系是结构光测量技术中的关键技术之一。
Establishing high precision phase-height mapping is one of the key techniques in structural light measurement system.
由于光纤通信系统中光功率很低,使得满足晶体的相位匹配变得更加重要。
And due to the low optical power of the optical communication system, it is more important to match the crystal phases.
提出了会聚偏振光干涉法测量波片相位延迟量的新方法。
Put forward a new method of assembling polarization-interference to measure the phase retardation of wave-plate.
利用耦合波方程分析了相位共轭效应和受激散射阈值效应对受激散射光发散角的影响。
The influence of the phase conjugation effect and the threshold effect of stimulated scattering on the divergence of stimulated scattering was discussed.
提出用光纤相位传感器代替传统的微音器检测光声信号。
The optical fiber phase sensor is used to replace the traditional microphone to detect photoacoustic signal.
首次建立了微变形镜阵列的光相位调制系统级模型。
Moreover, the optical phase modulation behavior model of micro deformable mirror arrays is established for the first time.
偏振光干涉仪也是一种能将布拉格波长移动转化为干涉相位变化的非平衡干涉仪。
The polarized light interferometer is also a kind of unbalanced interferometer which can convert the Bragg wavelength shifts into interferometer phase shifts.
利用条纹照相机直接观察和记录了由全息相位共轭技术产生的相位共轭的皮秒光脉冲。
The phase conjugation of picosecond optical pulses is observed and recorded directly by using a streak camera. The signals are achieved by holographic phase conjugate technique.
同时,利用相位渗透理论,数值计算了垂直腔半导体光放大器(VCSOA)中的有效腔长。
The efficient cavity length of vertical cavity semiconductor optical amplifier (VCSOA) is calculated with the theory of phase penetrating.
基于压电陶瓷的逆压电效应,采用压电陶瓷作为光相位调制器设计了光纤微分干涉仪。
A piezoelectric ceramic, based on the converse piezoelectric effect, was used as optical phase modulator to design a fiber differential interferometer.
从光的菲涅耳衍射、波前相位重构入手,对连续信号进行了离散化处理,给出了数值计算公式。
The formula of numerical computing is presented with discretion for Fresnel diffraction and phase numerical reconstruction of wave front.
讨论了准相位匹配(QPM)技术中的非线性光频转换谐波振幅方程和谐波转换效率。
The harmonic amplitude equation and the generation efficiency of nonlinear optical frequency conversion(NOFC)in quasi-phase-matching (QPM) were discussed.
同时,还证明了在描写光场的相干性方面,光场的量子相位与量子相干性是并协的。
Also show the quantum phase and coherence properties of the field are complementary in description of the optical quantum coherence.
理论分析表明,该现象可以用光克尔效应和热光非线性效应共同作用下的附加相位孔对入射光束的衍射行为来解释。
This phenomenon can be explained by the diffraction effect of the Gaussian beam from the laser induced phase hole in the nonlinear medium caused by Kerr effect and thermo optic effect.
激光全息摄影是一种能够记录景物反射光的振幅和相位信息的立体摄影技术。
Laser holography is a kind of three-dimensional photographic technique to record the scene reflected light amplitude and phase information.
结果表明:啁啾光脉冲的振幅调制深度和相位扰动深度越大,则压缩后的光脉冲对比度越小;
The influences of the SPM with amplitude modulations and phase perturbations on the compressed pulse is simulated.
结果表明:啁啾光脉冲的振幅调制深度和相位扰动深度越大,则压缩后的光脉冲对比度越小;啁啾光脉冲的振幅调制周期和相位扰动周期越小,则压缩光脉冲的预脉冲宽度越大。
The simulations show that more amplitude modulations and phase perturbations lead to lower contrast of the compressed pulse, and bigger modulation cycle results in wider pre-pulse width.
提出用光纤相位传感器代替传统的微音器检测光声信号,讨论了光纤中光波的相位变化与光声信号的关系。
The optical fiber phase sensor is used to replaces traditional microphone, and the relationship between light phase and photoacoustic signal is discussed.
以结构光条纹相位为信息载体,采用相移技术精确地测量结构光条纹成像过程中相位的变化,实现高分辨的光线追迹,得到点列图。
The phase changes in the imaging process can be tested accurately by the phase-shifting technique and then used for ray tracing to get the spot diagram.
通过改变光子晶体的结构参数可以实现对反射光相位的调制。
Therefore, the reflective phase modulation will be achieved by variation of the structure parameters of photonic crystals.
提出采用光学移相办法测量超高频调制光相位特性的一种方法。
A method for measuring the phase characteristics of ultrahigh frequency modulating light by optical phase shift is proposed.
当两相干光附加一按固定频率变化的相位差时,其干涉条纹的光强将随之交变,即为相位调制干涉。
In addition to alternating phase difference between two aims of interferometer, the intensity of light of the interference fringes will vary in the same frequency, which is called as phase modulation.
通过实验得出了SPPC和MPPC共存时的相位共轭输出特性对二束泵浦光的泵浦参数的依赖关系。
The dependence is obtained experimentally of the output properties of SPPC and MPPC coexistence on pump parameters of both the pump beams.
相位共轭光腔能消除腔内的波前畸变和介质扰动,从而能提高输出激光束的性能和质量。
Phase conjugate resonators offer the potential to increase laser output and improve beam quality by virtue of their ability to correct for severe intracavity aberrations.
相位共轭光腔能消除腔内的波前畸变和介质扰动,从而能提高输出激光束的性能和质量。
Phase conjugate resonators offer the potential to increase laser output and improve beam quality by virtue of their ability to correct for severe intracavity aberrations.
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