搜索结果: 1-15 共查到“工学 Optically”相关记录30条 . 查询时间(0.058 秒)
A NEW TECHNIQUE BASED ON MINI-UAS FOR ESTIMATING WATER AND BOTTOM RADIANCE CONTRIBUTIONS IN OPTICALLY SHALLOW WATERS
UAS Ocean color Littoral waters Bottom reflectance Radiance Visible spectrum Saint Lawrence Estuary
2015/9/10
The mapping of nearshore bathymetry based on spaceborne radiometers is commonly used for QC ocean colour products in littoral waters. However, the accuracy of these estimates is relatively poor with r...
Analysis of Frequency Locking in Optically Driven MEMS Resonators
Frequency Locking Optically Driven MEMS Resonators
2015/8/27
Thin, planar, radio frequency microelectromechan-ical systems (MEMS) resonators have been shown to self-oscillate in the absence of externalforcing whenilluminated by adirect cur-rent (dc) laser of su...
Analysis of Laser Power Threshold for Self Oscillation in Thermo-Optically Excited Doubly Supported MEMS Beams
MEMS Limit cycle Hopf bifurcation Numerical continuation Resonator
2015/8/26
An optically thin MEMS beam suspended above a substrate and illuminated with a CW laser forms an interferometer, coupling out-of-plane deflection of the beam to absorption within it. In turn, laser ab...
Simulation of optically controlled GaN (Gallium Nitride) using analytical modeling of high frequency response and switching applications
Modeling analysis optical control gallium nitride ion dose ion energy ion range of parameters
2014/12/31
In this project, an analytical modeling of optically controlled Gallium Nitride has been presented here for an analysis of extrinsic and intrinsic parameters such as, gate capacitances including both ...
Optically Reconfigurable 1x4 Silicon-on-Insulator Remote Node Switch for Access Networks
Optically Reconfigurable 1x4 Silicon-on-Insulator Remote Node Switch Access Networks
2014/11/6
Operation of an optically controlled 1x4 remote node, based on membrane InP switches and SOI waveguide circuits, is shown. Extinction ratio >25dB and penalty-free operation for 10Gb/s 231-1 PRBS data ...
REMOTE SENSING OF WATER QUALITY IN OPTICALLY COMPLEX LAKES
Lakes remote sensing water quality aquatic optics chlorophyll-a CDOM suspended matter
2014/4/29
Solving of several global and regional problems requires adequate data about lake water quality parameters like the amount and type of phytoplankton dominating in the lakes, the amount of dissolved an...
Wavelength-Striped Multicasting of Optically-Connected Memory for Large-Scale Computing Systems
Optical interconnects Networks multicast Optics in computing
2015/5/26
We demonstrate the broadband multicasting of optically-connected memory between multiple SDRAM nodes and an emulated microprocessor on an optical network test-bed. 4×2.5-Gb/s wavelength-striped memory...
Two-Pump Distributed Parametric Amplification for Optically Powered Communication System
Fiber optics amplifiers oscillators Nonlinear optics parametric processes
2015/5/25
We demonstrate a power-efficient two-pump distributed parametric amplification(DPA) system. The residual pumps are recycled to power up the receiving component. At the BER of 10 −9 , power penal...
Monolithic Electro-Optically Modulated VCSEL Suitable For Radio over Fibre Applications to 20 GHz
Fiber optics communications Modulators
2015/5/25
An integrated EOM VCSELs is shown to offer high linearity (92dB/Hz ⅔ at 6GHz) and by extrapolation ~90dB/Hz ⅔ up to 20GHz. Successful modulation with IEEE 802.11g signals is demonstrated...
Up to 40Gb/s Optically Amplified AMOOFDM for Next Generation PON Networks
Fiber optics amplifiers oscillators Modulation
2015/5/25
We compare the performances of IMDD AMOOFDM transmissions in both amplified and unamplified configurations for long distance PON networks with 1:32 and 1:64 split ratios.Up to 40Gb/s bit rate has been...
Energy-efficient MAC Protocol Enabling an Optically Powered Sensor Network
Energy-efficient MAC Protocol Optically Powered Sensor Network
2015/5/18
A new MAC protocol allows communication with both awake and asleep network elements. The protocol and its capabilities are demonstrated in an exemplary sensor network.
Power Consumption and Scalability of Optically Switched Interconnects for High-Capacity Network Elements
Power Consumption Scalability Optically High-Capacity Network Element
2015/5/18
Three realizations of optically switched interconnects were analyzed regarding power consumption and scalability and compared with electronic backplane and optical point-to-point options. The results ...
Multi-Gbps ASK and QPSK-modulated 60 GHz RoF Link using an Optically Injection Locked VCSEL
Radio Frequency Photonics Vertical cavity surface emitting lasers
2015/6/9
A 60 GHz RoF transmitter employing an optically injection locked VCSEL is demonstrated for the first time. Multi-Gbps ASK and QPSK at 60 GHz after 20 km fiber and 3 m wireless transmission is shown.
Optically Powered Low-Energy Demarcation Device for Monitoring FTTx Networks
Fiber optics optical communications Remote sensing sensors
2015/6/5
We demonstrate an energy-autarkic FTTx monitor. A special protocol and sophisti-cated hardware reduce the electrical operating power to 0.7μW, which can be delivered by an optical supply signal of onl...
Simultaneous Transmission of 256-QAM WIMAX at 5.7GHz and Optically Generated Impulse Radio UWB over Fiber for Indoor Wireless Multi-Services
Radio frequency photonics Optical communications
2015/6/4
Fiber transmission of simultaneous optically generated FCC compliant 625Mbps impulse radio UWB and 80Mbps 256-QAM IEEE 802.16 WIMAX signals is experimentally demonstrated by using a single directly mo...