搜索结果: 31-45 共查到“光电子技术 Light”相关记录76条 . 查询时间(0.267 秒)
This investigation proposes and experimentally demonstrates an optical code-division multiple-access (OCDMA) light source using a directly modulated Fabry–Pérot laser diode in an external injection sc...
A GaSb/GaAs quantum-dot light-emitting diode (QD LED) with a single GaSb QD layer is investigated in this paper. The room-temperature photoluminescence (PL) peak blue shift with increasing excitation ...
Angular constraint on light-trapping absorption enhancement in solar cells
Angular constraint light-trapping absorption enhancement solar cells
2011/8/10
Light trapping for solar cells can reduce production cost and improve energy conversion efficiency.Understanding some of the basic theoretical constraints on light trapping is therefore of funda...
Fabrication of Microfiber-Based Bragg Gratings with Ultraviolet-Light Exposure
Fiber Bragg gratings Integrated optics devices Microstructure fabrication
2011/5/22
We fabricated microfiber-based Bragg gratings with ultraviolet-light exposure. Bragg reflections are observed for gratings with diameters of several micron-meters. The dependence of Bragg grating char...
Cooperative Light Scattering Effects in Optical Fibers, Lasers, and Amplifiers
Nonlinear optics fibers Lasers fibers
2011/5/20
We overview Rayleigh, Brillouin and Raman scattering in optical fibers, fiber amplifiers and lasers focusing on their mutual cooperation dynamics and explaining associated effects such as multi-cascad...
Heating and burning of optical fiber by light scattered from bubble train formed by optical fiber fuse
optical fiber bubble train light scattered Heating and burning
2011/5/14
We investigate in detail for the first time the scattering properties and heating characteristics in an optical fiber when a bubble train forms in the middle of the fiber as a result of the fiber fuse...
Nanodome Solar Cells with Efficient Light Management and Self-Cleaning
Nanocone nanodome solar cell light trapping photovoltaics
2010/8/10
Here for the first time, we demonstrate novel nanodome solar cells, which have periodic nanoscale modulation for all layers from the bottom substrate, through the active absorber to the top tran...
Superscattering of Light from Subwavelength Nanostructures
Superscattering Light Subwavelength Nanostructures
2010/8/10
We provide a theoretical discussion of the scattering cross section of individual subwavelength structures. We show that, in principle, an arbitrarily large total cross section can be achieved, provid...
Fundamental limit of nanophotonic light trapping in solar cells
nanophotonic light trapping solar cells
2010/8/10
Establishing the fundamental limit of nanophotonic light-trapping schemes is of paramount importance and is becoming increasingly urgent for current solar cell research. The standard theory of light t...
We report the first demonstration of a slow light laser oscillator. The slow light laser was realized by incorporating an ultra-narrow bandwidth long-delay and low loss transmission filter into an Er/...
Photonic Crystal Slow Light Devices −−− Tunable Delay, Nonlinearity, Dynamic Tuning
Micro-optical devices Integrated optics devices
2010/6/5
Recent progress on photonic crystal slow light devices is presented. A 100 ps class tunability, 1 THz bandwidth, ps order response, enhanced nonlinearities with chalcogenide material, and dynamic tuni...
In-Service Chromatic Dispersion and Pass-Band Shape Measurements for Light Path with Modulated ASE Source
Networks wavelength routing Fiber measurement
2010/6/5
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...
Harmonic Distortion in Slow Light SOA based Microwave Photonic Phase Shifters
Fiber optics communications Fiber optics links subsystems
2010/6/4
We present a theoretical and experimental evaluation of any general order harmonic distortion in a SFL phase shifter based on CPO in a SOA and propose different optical filtering implementations for d...
Optoelectronic Generation of Millimeter-Wave White-Light at W-band with Very-Fast Sweeping Rate by Use of High-Power and Broadband Photonic Emitters
Photodiodes Radio frequency photonics
2010/6/4
By using photonic emitters and fast-scanning lasers at 1.55μm wavelengths, we generated very-flat spectra at 75-110GHz with a thirty times faster scanning-rate (35GHz/ms), much lower driving-voltage, ...
Very-High Temperature (200 ℃) Operation of GaN-Based Cascade Green Light Emitting Diode for Plastic Optical Fiber Communication
Light-emitting diodes Fiber optics communications
2010/6/4
We demonstrate cascade green light-emitting-diodes, which greatly release trade-off between output-power and speed and exhibits strong modulation-speed enhancement with negligible output-power degrada...