搜索结果: 1-10 共查到“光电子技术 shift”相关记录10条 . 查询时间(0.015 秒)
Chiral Metamaterial Produces Record Optical Shift Under Incremental Power Modulation
Chiral Metamaterial Produces Record Optical Shift Under Incremental Power Modulation
2017/3/14
Georgia Institute of Technology researchers have demonstrated an optical metamaterial whose chiroptical properties in the nonlinear regime produce a significant spectral shift with power levels in the...
Non-reciprocal phase shift induced by an effective magnetic flux for light
Non-reciprocal phase shift induced effective magnetic
2015/8/6
Photons are neutral particles that do not interact directly with a magnetic field. However, recent theoretical work1,2 has shown that an effective magnetic field for photons can exist if t...
基于改进Mean Shift算法的实时视频目标跟踪
嵌入式 视频目标跟踪 图像传感器 Mean Shift算法 实时
2012/12/13
设计了一套嵌入式平台上实现的视频目标跟踪系统.该系统采用CMOS图像传感器获取视频信号,利用Z228多媒体芯片自带的ARM9处理器完成视频信号的控制,并通过MPEG-4硬件编码器实现视频信号的压缩.用Mean Shift算法跟踪运动目标,针对其收敛的局限性设置多个搜索点来提高其跟踪效果.通过减少采样点和标记已计算点来提高代码运行速度,增强了跟踪的实时性.实验结果表明,本系统能以27 fps速率连续...
Compact refractometer based on extrinsic-phase-shift fiber Bragg grating
Refractometer Extrinsic-phase-shift Fiber Bragg grating Compact sensing structure Large measurement range
2013/5/27
A novel method to measure refractive index of liquids by using an extrinsic-phase-shift fiber Bragg grating(EPS-FBG) is proposed and experimentally demonstrated. The EPS-FBG is obtained by separating ...
160 Gb/s All-Optical Binary-to-Quaternary Amplitude Shift Keying Format Conversion
Nonlinear optics fibers Ultrafast nonlinear optics
2015/5/21
160Gb/s all-optical binary-to-quaternary amplitude shift keying format conversion is carried out in nonlinear optical fiber. This scheme, which also acts as a 2-bit digital-to-analog convertor, has be...
Optical isolation based on nonreciprocal phase shift induced by interband photonic transitions
Optical isolation nonreciprocal phase shift lnterband photonic transitions
2015/8/10
Photonic transitions in waveguides can create nonreciprocal phase response for counterpropagating modes. Such effect can be used in Mach–Zehnder interferometers to form optical isolators and circulato...
New Optical Fibre Line Testing System Function for Facility Location and Identification Using Multivalued Brillouin Frequency Shift Assigned Fibre
Optical Fibre Line Testing System Function IMultivalued Brillouin Frequency Shift Assigned Fibre
2015/7/17
We propose a new optical fibre line testing system function for locating and identifying facilities in optical fibre networks with high accuracy by using 1 cm of multivalued Brillouin frequency shift ...
Tunable Birefringent Phase-Shift Induced in Fiber Bragg Grating by a Shape Memory Alloy Ferrule
Tunable Birefringent Phase-Shift Induced Fiber Bragg Grating Shape Memory Alloy Ferrule
2015/7/15
We present a new method to induce low loss tunable birefringent phase shifts in fiber Bragg grating by applying mechanical stresses at precise locations along the FBG with a specially designed shape m...
Thermal Diffusivity Measurements of Metals and Alloys by Making Use of the Phase Shift of Laser-Induced Thermoelastic Wave
Thermal diffusivity measurement Thermo elastic wave CO2 laser
2009/6/8
This paper describes a method of obtaining the thermal diffusivity of a metal sample of known thickness. By irradiating an intensity-modulated laser beam of 8 W to the sample at power density of 1.5 ×...
All-optical Vestigial-Sideband Signal Generation and Pattern Effect Miti- gation with an SOA Based Red-Shift Optical Filter Wavelength Converter
All-optical Vestigial-Sideband Signal SOA Based Red-Shift Optical Wavelength Converter
2015/8/3
We demonstrate 40 Gb/s SOA-based wavelength conversion from a RZ into a vestigial-sideband RZ signal. SOA related pattern effects are successfully suppressed by proper choice of the red-shift optical ...