搜索结果: 1-15 共查到“光学工程 visible”相关记录22条 . 查询时间(0.093 秒)
VISIBLE ROUTES IN 3D DENSE CITY USING REINFORCEMENT LEARNING
3D GIS Visibility Routes Reinforcement learning
2018/11/9
In the last few years, the 3D GIS domain has developed rapidly, and has become increasingly accessible to different disciplines. 3D Spatial analysis of Built-up areas seems to be one of the most chall...
Making Hydrogen Fuel from Water and Visible Light Highly Efficient（图）
Making Hydrogen Fuel Water Visible Light Highly Efficient
2015/9/9
Mimicking photosynthesis is not easy. The bottleneck of artificial photosynthesis is visible light, because converting it into other forms of energy is not efficient. Researchers at Michigan Technolog...
High Refractive Index Bi2O3-B2O3-TeO2 Glass with High Visible-NIR Transmittance
Fiber materials Optical properties
2015/6/4
We have newly developed Bi 2 O 3 -B 2 O 3 -TeO 2 glass system. This glass shows high transmittance in visible and near-IR wavelength, in spite of their high refractive index and optical nonlinearity.
803 Mbit/s Visible Light WDM Link based on DMT Modulation of a Single RGB LED Luminary
Free-space optical communication Light-emitting diodes
2015/5/25
We report the first visible light link based on WDM and DMT modulation of a single RGB-type white LED, operating at an aggregate rate of 803 Mbit/s within the FEC 2·10 -3 limit.
Equalization and Pre-distorted Schemes for Increasing Data Rate in In-door Visible Light Communication System
Equalization Pre-distorted Increasing Data Rate Visible Light Communication System
2015/5/18
We propose and demonstrate using signal pre-distortion and equalization schemes for increasing the data rate of the white-light LED communication system. Bit-error-rate of <10 -10 at 10-Mb/s operation...
A High-Speed Visible Light Indoor Network Employing a Short Pulse Modulation and a QPM-LN Module
High-Speed Visible Light Indoor Network Short Pulse Modulation QPM-LN Module
2015/5/18
We propose the concept of over-gigabit visible light indoor networks using λ-conversion achieved by combining a short pulse modulator with a QPM-LN module. Error free operation at 1.25 Gb/s is confirm...
Relation between side fluorescence and laser emission in an infrared-to-visible upconversion ZBLAN erbium-doped fiber
infrared-to-visible upconversion fiber laser
2011/5/5
The relation between spontaneous and induced emission, and to some extend amplified
spontaneous emission in an optical fiber, due to its very elongated active media shape (pencil-like
shape) is diff...
230 Mbit/s via a Wireless Visible-Light Link based on OOK Modulation of Phosphorescent White LEDs
Free-space optical communication Light-emitting diodes
2015/6/8
We report a first indoor wireless visible-light link operating up to 230 Mbit/s by use of on-off-keying and with bit-error-ratios below 2·10 -3 . The results were achieved for illuminance levels recom...
This article introduces "visible light communication" using visible light sources as transmitters and discusses its applications and standardization activities.
The influence of thermal treatment of the porous glass plates on the character of their scattering in visible spectral region
phase-separated alkali borosilicate glasses porous glass light transmission
2011/5/6
The pore structure and light transmission of the high-silica porous glasses in visible spectral
region are investigated depending on a temperature of their thermal treatment and composition of
the i...
Compact and Portable Multiline UV & Visible Raman Laser in Hydrogen-filled HC-PCF
Visible Raman Hydrogen-filled HC-PCF
2015/7/20
We present a very compact multi-line Raman-laser with broad spectral coverage from near-IR through to the much sought after yellow, deep blue and UV. Each line of the laser exhibits high power density...
80 Mbit/s Visible Light Communications Using Pre-Equalized White LED
Visible Light Communications Pre-Equalized White LED
2015/8/6
This paper reports an 80 Mbit/s OOK-NRZ Visible Light Communications experimental link using a single pre-equalized 45-MHz bandwidth white LED.
Visible luminescence and upconversion processes in Bi-doped silica- based fibers pumped by IR radiation
Visible luminescence upconversion processes Bi-doped fibers pumped IR radiation
2015/7/31
The anti-Stokes visible luminescence and upconversion processes in Bi-doped silica-based fibers were investigated. The upconversion coefficients, absorption cross-sections and concentrations of bismut...
10 Gb/s visible source based on sum frequency generation
visible source sum frequency generation
2015/7/30
We report the generation of a 10 Gb/s source at 639nm with applications in characterizing multimode plastic optical fiber systems, obtained via sum frequency generation in a PPLN crystal.
Ultraviolet photoconductive detector with high visible rejection and fast photoresponse based on ZnO thin film
ZnO MSM Photoconductive detector Responsivity
2011/12/8
In this study, metal–semiconductor–metal (MSM) photoconductive detector was fabricated on c-axis preferred oriented ZnO film prepared on quartz by radio frequency magnetron sputtering. With the applie...