搜索结果: 1-15 共查到“工学 pulses”相关记录31条 . 查询时间(0.125 秒)
WAVEFORM PROCESSING OF LASER PULSES FOR RECONSTRUCTION OF SURFACES IN URBAN AREAS
Urban Analysis Laser scanning LIDAR Measurement Feature
2015/8/3
In this paper we describe investigations for digital recording of received laser pulses and a detailed analysis of the pulse waveform.In contrast to previous works using a single photon detection tech...
EXTRACTION OF FEATURES FROM OBJECTS IN URBAN AREAS USING SPACETIME ANALYSIS OF RECORDED LASER PULSES
Urban Analysis Simulation Laser scanning LIDAR Measurement Feature
2015/6/1
In this paper we describe a simulation system and investigations for analysis of recorded laser pulses. A simulation setup that considers simulated signals of synthetic objects was developed for explo...
Light pulses control graphene’s electrical behavior（图）
graphene’s electrical behavior The sensor
2014/8/19
Graphene, an ultrathin form of carbon with exceptional electrical, optical, and mechanical properties, has become a focus of research on a variety of potential uses. Now researchers at MIT have found ...
BACKSCATTERING OF INDIVIDUAL LIDAR PULSES FROM FOREST CANOPIES EXPLAINED BY PHOTOGRAMMETRICALLY DERIVED VEGETATION STRUCTURE
Canopy imaging silhouette footprint echo triggering waveform LiDAR
2014/4/24
In recent years, airborne LiDAR sensors have shown remarkable performance in the mapping of forest vegetation. This experimental study looks at LiDAR data at the scale of individual pulses to elucidat...
Nonlinear Optical Studies of DNA Doped Rhodamine 6G-PVA Films Using Picosecond Pulses
DNA Thin Films Z-Scan Picosecond Two-Photon Absorption
2013/1/30
We present our results from the measurements of third-order optical nonlinearity in DNA doped Rhodamine 6G/PVA films achieved through Z-scan measurements using ~2 picosecond (ps) pulses at a wavelengt...
Active in Situ Biomonitoring of Pesticide Pulses Using Gammarus spp. in Small Tributaries of Lake Constance
Active Biomonitoring Gammarus Field Test Ecotoxicology
2013/3/11
Gammarids are important members of a stream抯 macrozoobenthos biocoenosis and food web. Moreover, they proved to be very sensitive towards different types of pollution. GamToxTM is a new in situ ecotox...
Photonic Synthesis of Triangular-Shaped Pulses and Its Tunability Utilizing Frequency to Time Mapping
Triangular-Shaped Pulses Utilizing Frequency Photonic Synthesis
2015/5/15
A synthesis scheme to generate microwave triangular-shaped pulses based on spectral shaping and frequency-to-time mapping is proposed. Triangular-shaped signals with periods of 0.2ns, 0.4ns, 1.6ns and...
Generation of Ultra-wideband Doublet Pulses Based on Kerr Shutter Using an Elliptically Polarized Beam in Bismuth Oxide-based Nonlinear Optical Fiber
Ultra-wideband Doublet Pulses Kerr Shutter Elliptically Polarized Beam
2015/5/15
We demonstrate a nonlinear signal-processor incorporating a Bismuth-based nonlinear fiber for UWB doublet pulse generation. High quality of doublet pulses is readily generated from the signal-processo...
Reconfigurable Linear Chirp Control in Photonic Generation of High-Frequency Microwave Pulses
Continuous optical signal processing Microwaves
2015/6/4
A fiber-based approach for linear chirp control in optically-generated microwave pulses is proposed and demonstrated.Full linear chirp reconfigurability, including positive, negative and zero chirp ra...
Completely Capturing Light Pulses in a Few Dynamically Tuned Microcavities
Coupled mode analysis optical pulses simulation waveguides
2015/8/10
We describe a dynamically tuned system capable of capturing light pulses incident from a waveguide in a pair of microcavities.
Capturing light pulses into a pair of coupled photonic crystal cavities
Capturing light pulses coupled photonic crystal cavities
2015/8/10
We describe finite-difference time-domain simulations of a two-dimensional photonic crystal implementation of a two-resonator system capable of capturing light pulses from a waveguide. As much a...
Generation of High-Repetition-Rate Pulses Utilizing Cascaded Single Mode Fiber and Semiconductor Optical Amplifier
Optoelectronics high-repetition-rate optical pulses single mode fiber
2009/7/28
To generate high-repetition-rate optical pulses, a novel and simple device is demonstrated, in which the cascaded single mode fiber (SMF) with negative third order dispersion and semiconductor optical...
160 Gbit/s OTDM System Based on 40 GHz Optical Pulses Generated Using Simultaneous Two-Arm Modulation of a Mach-Zehnder Modulator
OTDM System Optical Pulses Generated Mach-Zehnder Modulator
2015/7/17
Bit-error-rate free performance of 160 Gbit/s OTDM data based on 1.9 ps 40 GHz optical pulses generated by simultaneous two-arm modulation of a Mach-Zehnder intensity modulator has been demonstrated.
Novel Optical Generation of Ultrawideband (UWB) Signals Using Quadratic Nonlinear Interactions Seeded By Normal/Dark Pulses
Optical Ultrawideband (UWB) Quadratic Nonlinear Seeded Normal/Dark Pulses
2015/7/17
We report two approaches to generate optical ultrawideband (UWB) signals using quadratic nonlinear interactions in periodically poled lithium niobate (PPLN) seeded by either normal or dark pulses. Pai...
Measurement of Fiber Chromatic Dispersion Using Spectral Interferometry with Modulation of Dispersed Laser Pulses
Chromatic Dispersion Spectral Interferometry Modulation Dispersed Laser Pulses
2015/7/16
We propose and experimentally demonstrate a simple accurate method for fiber dispersion measurement based on modulation of laser pulses stretched by the tested fiber. The spectral interferometry is im...