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optical frequency multiplying 光学倍乘法
Keywords Radio-over-Fiber;Millimeter-wave;Bidirectional transmission;Optical Frequency Multiplying;frequency-swept lightwave;Optical Interferometer;Pilot-tone insertion technology; 关键词光纤载射频;毫米波;双向传输系统;光学倍频法;扫频光波;光干涉仪;插入导频法;
Passively mode-locked fiber laser and the application in optical frequency metrology were introduced. 摘要本文介绍被动锁模光纤激光的架构，以及在光频量测的应用。
Two additional features of the pulses emitted by mode-locked lasers are keys to the development of optical frequency combs. 锁模雷射所放出的脉冲另有两个特徵，成为发展光频梳的关键。
Jun Ye, Steven Cundiff and John Hall bring different backgrounds to their collaboration on developing and applying femtosecond optical frequency combs. 叶军、康帝夫以及霍尔各有不同的背景，但是一起合作发展及应用飞秒光频梳。
Steven Cundiff, Jun Ye and John Hall bring different backgrounds to their collaboration on developing and applying femtosecond optical frequency combs. 康帝夫、叶军以及霍尔各有不同的背景，但是一起合作发展及应用飞秒光频梳。
John Hall, Steven Cundiff and Jun Ye bring different backgrounds to their collaboration on developing and applying femtosecond optical frequency combs. 霍尔、康帝夫以及叶军各有不同的背景，但是一起合作发展及应用飞秒光频梳。
The microcontroller then sets the frequency driving AOM to let the shifted optical frequency to jump alternatively to either side of the desired saturated absorption peak. 单片机控制AOM在吸收峰左右跳频得到鉴频信号，经数字PID计算反馈控制激光频率，实现了无调制稳频。
The optical temporal and the optical frequency holograph are introduced in this paper, emphasis on the principle of the optical frequency holograph, and its application. 介绍了光学频域全息和时域全息的形成原理,并对光学频域全息在光纤通信及图像传输中的应用作了简要介绍。
Frequency parameters are some of the key technical aspects in prototyping an optical fiber sensor system based on power modulated optical frequency domain Raman reflectometry. 研究了功率调制型光频域反射技术空间采样函数的基本特征,得到了频域测量参量对测量距离和空间分辨率的基本限制；
A frequency multiplier which multiplies the frequency of an input signal by two. 使输入信号的频率加倍的一种倍频器。
A wavefront at high radio frequencies or optical frequencies impinging on the atmosphere is distorted. 高射电频率或光学频率的波阵面进入大气时受到畸变。
This paper gives a new method of designing low frequency multiplier by expounding the principles and analyzing the characteristics. 文章提出了一种全新的低频倍频器的设计方法，并对其原理及特性进行了阐述与分析。
The attosecond pulse train which are consecutive pulses with same carrier envelope phase can push optical frequency combs in the visible and near infrared wavelength to extreme ultraviolet regions. 利用脉冲间具有相同载波包络相位的阿秒脉冲序列能把可见光波段的光学频率梳向极紫外波段扩展；
High-resolution measurements were the domain of specialists in precision spectroscopy and optical frequency metrology, wherein highly stable CW lasers reigned as the preferred tools. 高解析度测量是精细光谱及光频度量衡专家的专长，他们比较喜欢用高稳定度的CW雷射。
A counter with timing fiducial oscillator acts as a frequency multiplier, and the count value in the prior period is taken as the reference for the current period to give the decimal part of a signal period. 该方法利用带基准时基的数字计数器实现周期内线性细分，当前周期信号将前一整周期的倍频数作为参考构成信号周期的小数部分。
His optic nerve was hurt in an accident. 他的视神经在一次事故中受到损伤。
The experimental result shows that the frequency muhiplier designed by this method can hardly add noise except the theoretic phase noise loss. In addition,the efficiency of the frequency multiplier is relatively high. 实验结果表明,用这种方法设计的倍频电路,除损失理论上的相位噪声外,几乎不附加噪声,同时倍频效率也比较高。
In this paper,with the help of double balance mixer,design and manufacture of S-band wide-band & frequency multiplier chain is introduced,of which bandwidth is biggerthan 13%,harmonic rejection is bigger than 45 dB,output fluctuation is less than 1 dB. 本文介绍使用双平衡混频器设计制作S波段宽带八倍频链带宽大于13%25，谐波抑制大于45dB、输出波动小于1dB的良好性能。
Microscopes and telescopes are optical instruments. 望远镜和显微镜是光学仪器。