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15.The Doping of Semiconductors
... the intrinsic semiconductor which forms the starting point for fabrication. Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity. Silicon is by far the more widely used semiconductor for electronics, partly because it can be us ...
... the intrinsic semiconductor which forms the starting point for fabrication. Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity. Silicon is by far the more widely used semiconductor for electronics, partly because it can be us ...
OPTICAL MODELING
... simulation tool for optical micro-systems is the focus of our research . We use a rigorous optical modeling technique based on the rigorous Scalar Rayleigh-Sommerfeld formulation, which is efficiently solved with an angular spectrum approach. Our current research involves a semivector analysis which ...
... simulation tool for optical micro-systems is the focus of our research . We use a rigorous optical modeling technique based on the rigorous Scalar Rayleigh-Sommerfeld formulation, which is efficiently solved with an angular spectrum approach. Our current research involves a semivector analysis which ...
Fiber Optic Multiplexers
... card and graphical user interface (GUI) software. Expansion cards may be stacked on the 907E to add up to 48 data channels in a variety of formats, including RS-232/422/485, TTL, Ethernet, CAN Bus, hydrophone, audio, responders, and various analog and digital sonar signals. The 907E runs from a +5 V ...
... card and graphical user interface (GUI) software. Expansion cards may be stacked on the 907E to add up to 48 data channels in a variety of formats, including RS-232/422/485, TTL, Ethernet, CAN Bus, hydrophone, audio, responders, and various analog and digital sonar signals. The 907E runs from a +5 V ...
Nonlinear Optics
... to change its shape in space and time, and to create ultrashort laser pulses, the shortest events ever made by Man. NL is key element for optical data processing ...
... to change its shape in space and time, and to create ultrashort laser pulses, the shortest events ever made by Man. NL is key element for optical data processing ...
High Harmonic Generation
... Generating femtosecond pulses with Kerr-lens mode-locking Ti: sapphire crystal was discovered as an appropriate laser medium with a sufficient broad gain bandwidth to support the generation of femtosecond pulses. The refractive index increases according to intensity is passing the crystal. ...
... Generating femtosecond pulses with Kerr-lens mode-locking Ti: sapphire crystal was discovered as an appropriate laser medium with a sufficient broad gain bandwidth to support the generation of femtosecond pulses. The refractive index increases according to intensity is passing the crystal. ...
OpticalPosterLax
... the range within the transmission is errors free. Data shall go through 100m long cables and two optical patch panels ...
... the range within the transmission is errors free. Data shall go through 100m long cables and two optical patch panels ...
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... Low-coherence inteferometry (LCI), which was developed initially in the field of fiber optics,1 has become a widely used technique for various applications that involve biomedical imaging.2,3 The use of light sources with short temporal coherence produces the depth resolution needed for optical imag ...
... Low-coherence inteferometry (LCI), which was developed initially in the field of fiber optics,1 has become a widely used technique for various applications that involve biomedical imaging.2,3 The use of light sources with short temporal coherence produces the depth resolution needed for optical imag ...
Comparison of laser scanning methods
... reconstruction plane to produce the required intensity profile. The computer algorithms used to calculate the diffraction patterns incorporate the profile of the illuminating laser beam in order to achieve the optimum reconstruction performance. A measured intensity profile can be inputted or a math ...
... reconstruction plane to produce the required intensity profile. The computer algorithms used to calculate the diffraction patterns incorporate the profile of the illuminating laser beam in order to achieve the optimum reconstruction performance. A measured intensity profile can be inputted or a math ...
4.6 Optical Fibres
... Figure 4.26 Optical fibre structure and total internal reflection Light has to be launched into a fibre. Communication fibre uses lasers but for local networks light-emitting diodes may be used. Light travels through the fibre by total internal reflection bouncing off the interface between the core ...
... Figure 4.26 Optical fibre structure and total internal reflection Light has to be launched into a fibre. Communication fibre uses lasers but for local networks light-emitting diodes may be used. Light travels through the fibre by total internal reflection bouncing off the interface between the core ...
15-Gb/s Bit-Interleaved Optical Backplane Bus Using Volume
... to happen locally to relieve wiring congestion. In BIOB, the signals provided to VCSEL driver are first shortened by the local bit controller. Then the optical bit pulses emitted from VCSEL are delayed by a specific time according to the physical location of the daughter board so that the receiver d ...
... to happen locally to relieve wiring congestion. In BIOB, the signals provided to VCSEL driver are first shortened by the local bit controller. Then the optical bit pulses emitted from VCSEL are delayed by a specific time according to the physical location of the daughter board so that the receiver d ...
Repetition Rate Multiplication Using All
... optical domain. Usually, pulse shapers based on spatial light modulators are preferred to all-fiber configurations because they provide reconfiguration capabilities.2 Once the synthesis is performed, the light intensity is transferred to the electrical domain simply by using a highspeed photodetecto ...
... optical domain. Usually, pulse shapers based on spatial light modulators are preferred to all-fiber configurations because they provide reconfiguration capabilities.2 Once the synthesis is performed, the light intensity is transferred to the electrical domain simply by using a highspeed photodetecto ...
Bending What is Optical Fiber Dispersion?
... Since each mode ray travels a different distance as it propagates, the ray arrive at different times at the fiber output. So the light pulse spreads out in time which can cause signal overlapping so seriously that you cannot distinguish them any more.. ...
... Since each mode ray travels a different distance as it propagates, the ray arrive at different times at the fiber output. So the light pulse spreads out in time which can cause signal overlapping so seriously that you cannot distinguish them any more.. ...
Guided photoluminescence study of Nd
... Figures 6 present guided fluorescence decays (τ) of 4F3/2 - 4I11/2 radiative transition excited at 444 nm by top surface pumping of Nd3+-doped- SRSO and SRSN planar waveguides. Due to the non-exponential decay of the luminescence, the fitting by an exponential curve cannot be easily done. The lifeti ...
... Figures 6 present guided fluorescence decays (τ) of 4F3/2 - 4I11/2 radiative transition excited at 444 nm by top surface pumping of Nd3+-doped- SRSO and SRSN planar waveguides. Due to the non-exponential decay of the luminescence, the fitting by an exponential curve cannot be easily done. The lifeti ...
ellip
... The minimal signal is obtained when both polarizations incident on the analyzer are in phase. This can be obtained for two different positions of the polarizer, hence the two values P1 and P2. In principle one could measure either one. In practice both values are measured to eliminate any possible m ...
... The minimal signal is obtained when both polarizations incident on the analyzer are in phase. This can be obtained for two different positions of the polarizer, hence the two values P1 and P2. In principle one could measure either one. In practice both values are measured to eliminate any possible m ...
61
... When pulse propagates through boundaries having different refractive index n1and n2 where n1 is non linear refractive index and n2 is linear refractive index. At the boundary of linear and nonlinear the phase of pulse gets dispersed as shown in figure 5 When the pulse propagates through non linear m ...
... When pulse propagates through boundaries having different refractive index n1and n2 where n1 is non linear refractive index and n2 is linear refractive index. At the boundary of linear and nonlinear the phase of pulse gets dispersed as shown in figure 5 When the pulse propagates through non linear m ...
Structure and optical properties of reconstructed Si and Ge surfaces
... special structures on the surfaces by exploiting the anisotropy. Reflectance anisotropy (RA) spectroscopy is one of them. It is a linear optical technique that provides optical information about ordered surfaces and interfaces that are anisotropic in the surface plane. RA spectroscopy is a technique ...
... special structures on the surfaces by exploiting the anisotropy. Reflectance anisotropy (RA) spectroscopy is one of them. It is a linear optical technique that provides optical information about ordered surfaces and interfaces that are anisotropic in the surface plane. RA spectroscopy is a technique ...
Shaping up LED Chips
... power density. Such an assembly is ideal for optical coupling to a fibre (see Figure 3(a)). To test its efficiency, the aperture of a 2mm-diameter plastic optical fibre was aligned to the focal spot of the LED assembly. Measurements determined a coupling efficiency of 53.8 percent, the highest value ...
... power density. Such an assembly is ideal for optical coupling to a fibre (see Figure 3(a)). To test its efficiency, the aperture of a 2mm-diameter plastic optical fibre was aligned to the focal spot of the LED assembly. Measurements determined a coupling efficiency of 53.8 percent, the highest value ...
ELECTRICAL & COMPUTER ENGINEERING SEMINAR “Ultrafast Lasers and Devices”
... average power of 250 mW and a pulse energy of 58 pJ. This is a two-order-of-magnitude improvement in pulse energy over the performance of previously reported electrically pumped 1550-nm semiconductor lasers. The laser is designed to have a large saturation energy with a small confinement factor, ena ...
... average power of 250 mW and a pulse energy of 58 pJ. This is a two-order-of-magnitude improvement in pulse energy over the performance of previously reported electrically pumped 1550-nm semiconductor lasers. The laser is designed to have a large saturation energy with a small confinement factor, ena ...
Gigahertz frequency comb offset stabilization
... ultrabroadband supercontinua (SC) using chip-based silicon nitride (Si3N4) photonic waveguides [13, 14]. Multi-octave-spanning coherent spectra have been obtained with an order of magnitude less pulse energy as a direct result of the higher nonlinearity provided by these silicon-based photonics plat ...
... ultrabroadband supercontinua (SC) using chip-based silicon nitride (Si3N4) photonic waveguides [13, 14]. Multi-octave-spanning coherent spectra have been obtained with an order of magnitude less pulse energy as a direct result of the higher nonlinearity provided by these silicon-based photonics plat ...
Silicon photonics
Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).Silicon photonic devices can be made using existing semiconductor fabrication techniques, and because silicon is already used as the substrate for most integrated circuits, it is possible to create hybrid devices in which the optical and electronic components are integrated onto a single microchip. Consequently, silicon photonics is being actively researched by many electronics manufacturers including IBM and Intel, as well as by academic research groups such as that of Prof. Michal Lipson, who see it is a means for keeping on track with Moore's Law, by using optical interconnects to provide faster data transfer both between and within microchips.The propagation of light through silicon devices is governed by a range of nonlinear optical phenomena including the Kerr effect, the Raman effect, two photon absorption and interactions between photons and free charge carriers. The presence of nonlinearity is of fundamental importance, as it enables light to interact with light, thus permitting applications such as wavelength conversion and all-optical signal routing, in addition to the passive transmission of light.Silicon waveguides are also of great academic interest, due to their ability to support exotic nonlinear optical phenomena such as soliton propagation.