搜索结果: 1-15 共查到“光学工程 Mach-Zehnder”相关记录41条 . 查询时间(0.097 秒)
为了精确测量干涉信号中相位改变量，建立了基于马赫增德尔干涉的光路结构，提出了一种高精度的条纹计数解调方案。首先，对马赫增德尔干涉的结构进行了介绍，对基于3×3耦合器的马赫增德尔干涉结构的输出信号进行了分析，并利用输出干涉信号与输入光强信号的关系，提出了抗光源扰动影响的数据处理方案。接着分析了传统的条纹计数解调方案，提出了一种高精度的解调方法，该方法将传统的过零检测法与阈值判别法结合，并将传统的单向...
基于光纤Mach-Zehnder干涉仪双边缘检测技术,提出并设计了一套全光纤非相干测风激光雷达系统,对多普勒频移的提取和风速反演算法进行了理论分析,针对大气分子散射信号的特点,对光纤Mach-Zehnder鉴频系统进行了优化设计.应用美国标准大气模型,对系统的灵敏度、信噪比以及测量误差进行了数值仿真.仿真结果表明,对532 nm波长的地基分子散射测风激光雷达,当垂直距离分辨率为300 m,进行1 ...
级联光子晶体Mach-Zehnder干涉仪的可调谐滤波特性
滤波 液晶 光子晶体 Mach-Zehnder 级联
2016/8/26
基于液晶的电控双折射特性和光子晶体自准直特性,在二维光子晶体引入复合缺陷提出一种可调谐Mach-Zehnder 干涉(MZI)滤波器结构,应用液晶系统的自由能理论,推导了外加电压与液晶有效折射率的关系,并结合MZI 相位调制原理和光子晶体等效折射率理论,得到液晶的电控双折射特性与MZI 滤波器的输出光谱间的数学关系,运用时域有限差分法(FDTD)对滤波器的输出进行仿真模拟,并根据仿真结果对结构进行...
Mach-Zehnder（M-Z）干涉仪可作为鉴频器件应用于多普勒测风激光雷达系统中.鉴于一般M-Z干涉仪的稳定性差，不易于调节的缺点，提出一种基于双棱镜结构的新型双通道M-Z干涉仪作为多普勒测风激光雷达鉴频器件.在进行探测原理分析的基础上，利用光学设计软件对其鉴频系统结构进行了参量优化设计和系统仿真.通过设定实验参量并进行光线追迹模拟仿真实验结果，应用反演理论获得了风速值.利用多普勒频移公式计算...
大孔径静态干涉成像光谱技术是一种时空联合调制的傅里叶变换成像光谱技术，其核心元件通常采用Sagnac横向剪切干涉仪。这种结构会使进入干涉仪的光线有一半沿原路返回，降低了能量利用率。文章提出一种改进型Mach-Zehnder横向剪切干涉仪结构，克服了能量利用率低的缺点，在实现横向剪切的同时，还具有双通道输出的优点。本文通过光线追迹的方法，得到剪切量的一般表达式，并分析了各种误差源对剪切量误差的贡献。...
This letter proposes and experimentally demonstrates a cost-effective phase-modulation duobinary modulation scheme for improving self-phase modulation tolerance using a single modulator. Successful tr...
We experimentally demonstrate a simultaneous generation of baseband (BB) and RF signals, using only one single-electrode Mach–Zehnder modulator (SD-MZM) based
on double-sideband with optical carrier ...
Generation of optical millimeter-wave (mm-wave) signal using a Mach–Zehnder modulator (MZM) based on double-sideband (DSB), single-sideband (SSB), and double-sideband with carrier suppression (DSBCS) ...
RADIO-OVER-FIBER (ROF) systems have attracted much interest for potential use in future broadband wireless communications. Essential to ROF systems is the ability to generate and transmit optical radi...
针对偏振衰落现象导致信号关联的二义性使分布式双Mach-Zehnder光纤干涉传感系统难以实现高精度定位的问题,提出了一种控制偏振衰落的方法来保持系统检测信号的稳定性。利用系统的偏振模型分析了偏振衰落的来源,指出传感光纤偏振特性的不一致使系统检测信号对输入偏振态敏感是造成信号相关性恶化的根本原因,据此提出控制输入偏振态、搜索偏振态工作点的抗偏振衰落思想。在此基础上通过分析输入偏振态的两个参量对信号...
A Consolidated Multi-rate Burst-Mode DPSK Transmitter Using a Single Mach-Zehnder Modulator
Phase modulation Free-space optical comm Optical communications
2015/5/26
We demonstrate phase modulation, pulse carving, and burst-mode windowing in a single Mach-Zehnder modulator, significantly reducing size, weight, power, and complexity of prior three-modulator designs...
25GHz Hybrid Silicon Mach-Zehnder Modulator using High-Speed Push-Pull Slotline Design
General Modulators
2015/5/26
We demonstrate a hybrid silicon Mach-Zehnder modulator having a voltage-length product of 2.4 V-mm and chirp parameter of -0.75. This modulator also has a modulation bandwidth of 25 GHz.
Monolithic 100 Gb/s Twin-IQ Mach-Zehnder Modulators for Advanced Hybrid High-Capacity Transmitter Boards
Monolithic 100 Gb/s Twin-IQ Mach-Zehnder Modulators Advanced Hybrid High-Capacity Transmitter Boards
2015/5/20
Development and characterization of monolithic, flip-chip compatible 2x50 Gb/s twin-IQ DQPSK MZ modulator chips - capable for hybrid assembly onto planar optical boards of advanced Tbit-capacity trans...
40G RZ-DQPSK Transmitter Monolithically Integrated with Tunable DFB Laser Array and Mach-Zehnder Modulators
40G RZ-DQPSK Transmitter Monolithically Integrated Tunable DFB Laser Array Mach-Zehnder Modulators
2015/5/20
A 40G RZ-DQPSK transmitter monolithically integrated with a tunable DFB laser array and Mach-Zehnder modulators was developed for the first time. The optical waveform of 40Gb/s DQPSK was successfully ...
Demonstration of 50 Gbit/s 16QAM Signal Generation by Novel 16QAM Generation Method using a Dual-Drive InP Mach-Zehnder Modulator
Modulators Phase modulation
2015/5/20
We propose a novel 16QAM signal generation method using a single Mach-Zehnder modulator. We successfully demonstrate 50 Gbit/s 16QAM signal generation with a dual-drive npin InP Mach-Zehnder modulator...