搜索结果: 1-15 共查到“光学工程 measurements”相关记录32条 . 查询时间(0.059 秒)
Simultaneous 3D-flow field and compliant wall measurements in an abdominal aortic aneurysm flow using scanning-PTV
index matching scanning particle tracking velocimetry flow phantom
2015/8/25
We combine well established particle tracking with wall surface measurements using tomographic scanning and present results for the non-stationary 4D - flow field within an abdominal aortic aneurysm (...
Measurements of Plasma Electron Temperature Utilizing Magnesium Lines Appeared in Laser Produced Aluminum Plasma in Air
LIBS Self Absorption Mg-Lines Plasma Parameters
2013/1/30
We have utilized the relative intensity of magnesium lines originated from the Mg I at 285.2 nm and Mg II at 280.27, 279.55 nm to measure the plasma electron temperature. The plasma was produced via i...
Effect of Grain Curvature on Nano-Indentation Measurements of Thin Films
Nano-indentation Hardness of thin film Young’s modulus of thin film VO2 Vanadium dioxide Grain curvature effect
2011/11/25
Grain curvature effect on the measurement of nano-indentation has been observed for the first time, taking VO2 thin film as an example. As the grain size of thin film is comparable to the diameter of ...
Noise Figure Measurements in Phase-Insensitive and Phase-Sensitive Fiber Parametric Amplifier Cascade
Fiber optics amplifiers and oscillators Nonlinear optics four-wave mixing
2015/6/10
By cascading two non-degenerate inline fiber-optic parametric amplifiers, we observe NF ~2dB (beating phase-insensitive quantum limit) at 16-dB gain for the second (phase-sensitive)stage after subtrac...
First 80-Gb/s and 160-Gb/s Wavelength-Converted Data Stream Measurements in a Silicon Waveguide
Wavelength conversion devices Nonlinear optics four-wave mixing
2015/6/10
Data fidelity is inspected for the first time for wavelength-converted RZ TDM 80- and 160-Gb/s data using four-wave mixing in a silicon waveguide. Open eye diagrams and error-free operation is shown f...
Continuous,Real-Time,Full-Field Waveform Measurements via Spectral Slicing and Parallel Digital Coherent Detection
Homodyning Phase measurement Ultrafast measurements
2015/6/10
Single-shot, amplitude and phase characterization of 160-GHz bandwidth optical wave-forms with 2-μs record lengths using a bandwidth- and time-record scalable technique based on parallelized balanced ...
Intra-Channel Chromatic Dispersion Measurements with Live Neighboring Signals in a Long Haul DWDM System
Optical communications Networks wavelength routing Fiber measurement
2015/6/5
A novel four-tone probe signal is used to measure end-to-end residual chromatic dispersion in single 50-GHz DWDM channels of a long-haul ROADM network while transmitting more than 30 live signals in n...
Determination of Localized Loss in Cabled Fiber Using OTDR Measurements of Relative Mode Field Diameter
Fiber Characterization Fiber Measurements
2015/6/5
We demonstrate enhanced sensitivity of a commercial OTDR by employing novel bidirectional analysis techniques. The method is applicable to measurements of cabled fiber where fluctuations in local mode...
In-Service Chromatic Dispersion and Pass-Band Shape Measurements for Light Path with Modulated ASE Source
Networks wavelength routing Fiber measurement
2015/6/5
A tunable modulated broadband source and narrow-bandwidth filter are used to measure chromatic dispersion, group-delay ripple, and pass-band shape of DWDM-network light paths. This new method is simpl...
Reference MPO Connectors with Pre-Angled MT ferrules and measurements of fiber core position
Fiber optics components Fibers single-mode
2015/6/4
This paper describes the single mode 12-fiber reference MPO connector with insertion loss of no more than 0.15dB and core eccentricity of no more than 0.45μm.
Thermal Temperature Measurements of Plasma Torch by Alexandrite Effect Spectropyrometer
spectropyrometer spectral power thermal plasma
2011/4/21
An alexandrite effect spectropyrometer is used to directly measure the thermal temperature of an argon gas plasma jet from a 100 kW DC plasma torch, and the directly measured thermal temperature...
Optical correlation technique for cement particle size measurements
transverse coherence polarization interferometer cement size distribution function
2011/5/9
Optical correlation technique of determining the cement particle size distribution is described. It
is based on transverse coherent function measurement using a polarization transverse shearing
inte...
Roughness characterization of well-polished surfaces by measurements of light scattering distribution
light scattering roughness bidirectional reflectance distribution function
2011/5/9
According to vector scattering and scalar scattering theory, the relationship of BRDF (bidirectional
reflectance distribution function) of light scattering from micro-rough surface with TIS (total
i...
A novel method for high temperature measurements using fiber Bragg grating sensor
fiber Bragg grating chemical composition grating long period grating broadband source 3 dB coupler optical spectrum analyzer
2011/5/9
This paper reports the simulation, design and experimental analysis of a fiber Bragg grating (FBG)
temperature sensor, making use of chemical composition grating (CCG), which ranges from room
temper...
Measurements of the Birefringence and Verdet Constant in an Air-Core Fiber
Birefringence Verdet Constant Air-Core Fiber
2015/8/10
In order to determine the Verdet constant of an aircore photonic bandgap fiber (PBF), the birefringence of the fiber needs to be accurately known. We used two methods to measure the linear...