搜索结果: 1-7 共查到“工学 Heterodyne”相关记录7条 . 查询时间(0.053 秒)
Fourier-Transform, Integrated-Optic Spatial-Heterodyne Spectrometer with 1 GHz Resolution on a Silica-Based Planar Waveguide
Waveguides planar Spectroscopy Fourier transforms Integrated optics devices
2015/5/26
We present fabrication details and measurements of a high-resolution planar-waveguide spatial heterodyne spectrometer incorporating 64 asymmetric Mach-Zehnder interferometers.Measurements verify 1 GHz...
Michelson Interferometer With Faraday Mirrors Employed In A Delayed Self-Heterodyne Interferometer
Coherent optical effects Heterodyne Interferometry
2015/5/25
Faraday rotator mirrors in a Michelson interferometer configuration is shown to significantly improve resolution and coherence for delayed self-heterodyne interferometery.Coherence is clearly observed...
频率外差经验模式分解改进算法（Improved Algorithm of Frequency Heterodyne Empirical Mode Decomposition）
经验模式分解 频率外差 间隙非线性系统
2010/12/28
当信号中两个单频分量的频率在二倍频内时，经验模式分解（EMD）无法将两分量分解开。为了提高EMD的频率分辨率，根据频率外差EMD方法提出了一种改进算法。此方法增大了信号中组成分量的频率差距，使之达到EMD可分的程度，但不会使高低频率翻转。间隙非线性系统输出分析和转子复合故障诊断的应用表明，该算法能有效提高EMD的频率分辨率，分解精度高，操作简单。
Optical Carrier Suppression and Balanced Coherent Heterodyne Detection for Improved Performance in Wide-band Microwave Photonic Links
Optical Carrier Suppression Balanced Coherent Heterodyne Detection Improved Performance Wide-band Microwave Photonic Links
2015/6/8
We demonstrate a wide-band microwave photonic link with high gain and dynamic range, low noise figure, and dispersion-free propagation using double sideband suppressed carrier modulation, optical ampl...
Phase Stable RF-over-fiber Transmission using Heterodyne Interferometry
Radio frequency photonics Fiber optic links subsystems
2015/6/4
We demonstrate stable transmission of 3GHz over 300m of fiber with less than 0.017 degree (17fs) RMS phase error. An interferometer measures optical phase delay, providing information to a feed-forwar...
Experimental Demonstration on the Reduction of Linewidth Impact in a Self-Heterodyne Optical OFDM System
Fiber optics communications Modulation
2015/6/4
We show experimentally that the signal quality of a self-heterodyne optical OFDM system can be improved by temporally realigning the carrier with the subcarriers before photodetection. This can be exp...
Wavelength Resource Scalable Heterodyne Detection Based WDM Access Employing Time-Domain Modulation of Wavelength-Swept Light
Wavelength Resource Employing Time-Domain Modulation Wavelength-Swept Light
2015/7/31
Wavelength resource scalable heterodyne detection based WDM access employing time-domain modulation of wavelength-swept light is proposed. We experimentally demonstrate 1ch ～ 5ch 12.5 GHz-spaced 1.0 G...