搜索结果: 1-15 共查到“Fabry-Perot”相关记录47条 . 查询时间(0.086 秒)
基于射线跟踪模型,提出了一种超材料角反射面结构,实现了Fabry-Perot天线增益和口径效率的提升.首先对基于超材料角反射面的Fabry-Perot天线进行了理论推导和分析.然后,设计并分析了双圆极化馈源、基于超材料角反射面的Fabry-Perot天线及其性能.最后,对所提出的Fabry-Perot天线模型进行了制造和测试.结果表明,该天线的左圆极化增益和右圆极化增益分别为21.4dBi和21....
基于谱估计的Fabry-Perot标准具透过率曲线参数估计方法
Fabry-Perot标准具 激光雷达 谱估计 参数估计
2016/11/22
直接探测多普勒测风激光雷达系统大多采用基于Fabry-Perot（F-P）标准具的条纹技术和边缘技术测量多普勒频移。但激光器频率漂移会使得透过率曲线的估计出现一定误差，为了抑制其影响，提出了一种基于谱估计的F-P标准具透过率曲线参数估计方法。首先将标准具全量程扫描结果进行重构得到观测矩阵。之后使用MUSIC算法得到透过率曲线的伪谱。对伪谱进行谱峰搜索后，将得到的谱峰位置进行线性拟合得到自由谱间距。...
Fabry–Perot interferometer as a solar background noise suppressor:application to daytime lidar
Lidar Atmosphere Daytime
2015/8/24
Continuous atmospheric probing by a lidar is a requirement for many applications. However, due to high solar background noise during the daytime, lidar operations are mostly restricted to night-time. ...
提出一种基于Fibonacci与最小均方差联合解调光纤法布里-珀罗传感器腔长的算法.利用Fibonacci搜索方法,在一系列估计值中快速搜索到对应的最小均方差的数值,并作为腔长解调结果.仿真分析了算法迭代次数与解调准确度之间的关系并进行温度测量实验.结果表明,该算法的理论平均解调误差小于2×10-5 pm,与实际腔长的拟合度优于0.9999,解调动态范围可达2.5 mm;实验中,该算法腔长解调分辨...
利用非线性回归法结合仪器的传递函数模型对大气风场探测法布里-珀罗干涉仪进行了定标和反演.首先,基于修正的艾里函数建立了仪器的传递函数及气辉响应函数模型;然后,利用稳频激光器对现有法布里-珀罗干涉仪系统进行了实验室定标,获取了定标数据;采用分步非线性回归拟合法对定标数据进行处理,获取仪器传递函数模型参量;最后利用标定的仪器传递函数模型,对不同信噪比、不同风速温度预估输入的法布里-珀罗干涉仪气辉仿真数...
Wavelength-tunable QAM Synthesis by Direct Modulation of Injection-locked Fabry-Perot Semiconductor Lasers
Wavelength-tunable QAM Synthesis Direct Modulation Injection-locked Fabry-Perot Semiconductor Lasers
2014/11/6
A new scheme for direct and tunable (30nm shown here) QAM synthesis from binary RF data streams is demonstrated with up to 48Gbit/s QPSK, including propagation over 75km SMF-28. Preliminary 16QAM (60G...
针对星载测风Fabry-Perot（F-P）干涉仪的核心部件F-P标准具的热稳定性对测风精度的影响，从标准具结构设计角度(材料、形状和固定方式)分析了标准具的热稳定性，并给出最优设计方案。通过对光学元件结构尺寸的优化设计，得出了F-P标准具光学元件的最佳形状尺寸，即平板厚度为25 mm，间隔元件的角度为40°。采用柔性结构固定方式，计算了F-P标准具机械结构的形状尺寸。最后基于有限元法，分析了光学...
中高层大气风速反演需要精确的确定法布里-帕罗干涉仪(Fabry-Perot Interferometer,FPI)干涉条纹的圆心和半径.本文针对FPI非闭合式干涉环条纹,提出了新的条纹圆心和半径确定方法:首先对所得到的条纹强度分布进行噪声去除预处理:包括均值滤波和自适应滤波;然后初步确定圆心,以该圆心为中心作n条射线得到n条干涉环剖线,利用高斯函数拟合得到干涉环峰值位置,再利用所得峰值位置进行圆拟...
By using an optical nonreturn-to-zero (NRZ) format data-stream to injection-lock an synchronously modulated Fabry-Perot laser diode at below threshold condition (without DC driving current), an output...
High-speed all-optical data-format conversion and logic gate from a synchronously modulated Fabry朠閞ot laser diode (FPLD) below threshold condition is demonstrated by using external injection-induced n...
Enhanced Transmission in Rolled-up Hyperlenses utilizing Fabry-Perot Resonances
Enhanced Transmission Rolled-up Hyperlenses Fabry-Perot Resonances
2011/8/3
Abstract: We experimentally demonstrate that the transmission though rolled-up metal/semiconductor hyperlenses can be enhanced at desired frequencies utilizing Fabry-P\'erot resonances. By means of fi...
Upstream Multi-Wavelength Shared PON with Wavelength-Tunable Self-seeding Fabry-Perot Laser Diode
Lasers fiber Lasers, injection-locked Optical communications
2015/5/21
We proposed a Upstream Multi-Wavelength Shared PON using a tunable self-seeding FP-LD at ONU. The fiber laser performances are experimentally investigated. The paper also for the first time studies th...
Spontaneous emission spectrum of a V-type three-level atom in a Fabry–Perot cavity containing left-handed materials
Spontaneous emission spectrum V-type three-level atom Fabry–Perot cavity left-handed materials
2014/5/28
The spontaneous emission of a V-type Zeeman atom in a Fabry–Perot cavity containing left-handed materials(LHMs) is investigated. Because of the strong indirect quantum interference induced by the refo...
Demonstration of Low-Cost Uplink Transmission in a Coherent OCDMA PON Using Gain-Switched Fabry–Perot Lasers With External Injection
Fabry–Perot (FP) laser gain-switching optical code-division multiple access (OCDMA) passive optical network (PON)
2016/12/2
We propose and demonstrate a simple and low-cost uplink transmission scheme for coherent optical code-division multiple access (OCDMA) passive optical networks (PONs), using gain-switched Fabry-Perot ...
Controlling single diamond NV color center photoluminescence spectrum with a Fabry-Perot microcavity
Controlling single diamond NV color center photoluminescence spectrum Fabry-Perot microcavity
2010/11/9
We present both theoretical and experimental results on fluorescence of single defect centers in diamond nanocrystals embedded in a planar dielectric microcavity. From a theoretical point of view, we ...