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Dinner? Clubbing? There are many places full of picturesque sceneries, beautiful girls and delicious food. But if you wa......
Our experimental results show that the presence of a proper amount of negative group velocity dispersion is essential to......
A fully-differential charge pump(FDCP)with perfect current matching and low output current noise is realized for phase-l......
In this paper,experimental and theoretical studies of the output mode characteristics of an in-phase locked gain wavegui......
A pulsed laser system is realized with graphene employed as a Q-switch.The graphene is exfoliated from its solution usin......
We demonstrate a switchable Q-switched and mode-locked erbium-doped fiber laser (EDFL) operating in the L-band region us......
Two essential blocks for the PLLs based on CP, a phase-frequency detector(PFD) and an improved current steering charge-p......
We propose a novel hybrid phase-locked loop(PLL) architecture for overcoming the trade-off between fast locking time and......
Human activity duo to rapid increasing of the economy in China has become so wide and intense since 1980s that it comes ......
We report a wavelength swept fiber laser at the 1 μm region based on an actively mode-locked dispersion-tuning techniqu......
A 1.4–2 GHz phase-locked loop(PLL) ∑–Δ fraction-N frequency synthesizer with automatic frequency control(AFC) for 80......
A wide band, injection-coupled LC quadrature voltage control oscillator is presented. In the proposed circuit, two oscil......
We report on a compact passive mode-locked Er:fiber ring laser operated at the fundamental repetition rate of 517 MHz, w......
A 1550 nm Q-switched fiber laser using a carbon platinum saturable absorber deposited on side-polished fiber(SPF) is pro......
Graphene oxide carboxylic acid(COOH), a novel two-dimensional(2D) layered material with its unique optical and electroni......
Tungsten disulfide(WS_2) is a type of anisotropic-layered compound and has broadband saturable absorption features as sa......
We demonstrate an indoor 5 m free-space optical wireless coherent communication in mid L-band(1606.7 nm)by employing a t......
We demonstrate the generation of mode-locked pulses in an erbium-doped fiber laser(EDFL) by using a new manganese-doped ......
全固态激光器被动锁模是产生超短脉冲的一种有效方法。在基于Nd~(3+)掺杂激光材料被动锁模产生超短脉冲的研究中,无序晶体成为研究......
In this work pulse generation in both the 1.5 and 2 μm spectral ranges using a graphene oxide(GO)-paper-based saturable......
We experimentally demonstrated a diode-pumped Kerr-lens mode-locked femtosecond laser with a Yb:CaYAlO_4 crystal as the ......
We reported diverse soliton operations in a thulium/holmium-doped fiber laser by taking advantage of a tapered fiber-bas......
A method for optimizing the spectral distortion of an ultrafast pulse in a polarization-maintaining picosecond linear-ca......
非谓语动词中过去分词的用法你掌握了多少呢？经常给自己的语法知识梳梳辫子, 能够让你脑中有一个清晰的语法网络。下面让我们具体来......
The longitudinal generalized magneto-optical ellipsometry(GME) method is extended to the measurement of threelayer ultra......
作为1 μm附近由激光二极管直接抽运的高效、紧凑固体激光器的增益介质,掺Yb3+离子的激光材料越来越受到人们的关注.掺Yb的晶体具......
We propose and demonstrate a passively mode-locked fiber laser operating at 1951.8 nm using a commercial thulium-doped f......
课型类别:阅读课授课时间:30分钟授课年级:五年级教学文本The Greatest Treasure in the World Once upon a time,the greatest tr......
A fast-locking all-digital delay-locked loop(ADDLL) is proposed for the DDR SDRAM controller interface in a field progra......
Objective To investigate the expression profile of microRNA-21 in human cholangiocarcinoma tissues and to validate its b......
Time-to-Digital Converter (TDC) is a key block used as the phase/frequency detector in an All-Digital Phase-Locked Loop ......
一、什么叫过去分词的逻辑主语 我们知道,过去分词属于非谓语动词的一种。所谓非谓语动词,就是指不用作谓语的动词。由于非谓语......
目的 分析被关锁重性精神疾病患者解锁救治前后状况.方法 纳入2006年11月至2012年3月河北省开展的“解锁工程”解救被关锁的重性精......
多用户环境下实现数据共享要避免同时访问时可能产生的数据错误,Visual Foxpro能够有选择地实现数据的锁定与解锁以及预防死锁的功......
这幢私人住宅的组织结构和外表结构基于一个双重闭合的环状半圆线脚装饰环形，魔比斯环。魔比斯环的交织结构与该家庭的全天生活与工......
介绍了数字锁相环CD4046在电能质量分析仪中的一种典型应用,给出了电路参数的计算方法,并对电压控制振荡器（Voltage-Controlled Osc......
随着计算机技术的高速发展以及计算机的广泛使用，人们对监控性工具软件的需求越来越强烈。屏幕锁定系统是一个基于C／S模式的网络监控......
文章讨论本发明创造的发明点在于:用全数字设计的方法,简洁、准确地判断PLL是否处于稳定状态,经研究,发现其特别适用于全数字PLL。......
模拟仿真了谐振式光纤环腔的透射谱线以及鉴频曲线,得透射谱线最低谷值对应为调制谐振点,鉴频曲线的线性区为陀螺的工作范围区,线......
