IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... The Telecommunication Industries face a great challenge in providing very high bandwidth for the increasing Population. Thus the great demand has kindled the researchers to find new innovative ideas for effective dispersion less transmission through a long distance. The Wavelength Division Multiplex ...
... The Telecommunication Industries face a great challenge in providing very high bandwidth for the increasing Population. Thus the great demand has kindled the researchers to find new innovative ideas for effective dispersion less transmission through a long distance. The Wavelength Division Multiplex ...
OPTO - SPIE
... lasers. The model is based on a set of five rate equations: one for the ground state (GS) photons, another one treating the phase difference between the slave and the master lasers while three rate equations are used to describe the carriers in WL, ES and GS, respectively. The modulation transfer fu ...
... lasers. The model is based on a set of five rate equations: one for the ground state (GS) photons, another one treating the phase difference between the slave and the master lasers while three rate equations are used to describe the carriers in WL, ES and GS, respectively. The modulation transfer fu ...
Propagation dynamics of optical vortices
... found that field vortices are generated when waves scatter from rough surfaces.1–4 An optical vortex (OV) also occurs as a particular solution to the wave equation in cylindrical coordinates; hence the doughnut mode of a laser cavity is an example of an OV.5–17 For this reason, largearea lasers and ...
... found that field vortices are generated when waves scatter from rough surfaces.1–4 An optical vortex (OV) also occurs as a particular solution to the wave equation in cylindrical coordinates; hence the doughnut mode of a laser cavity is an example of an OV.5–17 For this reason, largearea lasers and ...
Multiplexed Digital Holography incorporating Speckle
... shapes without influencing the controlled parts. In contrast, interferometry and digital holography in combination with computers become faster, more reliable and highly accurate as an alternative non-contact technique for industrial shape evaluation. For example in digital holography, access to the ...
... shapes without influencing the controlled parts. In contrast, interferometry and digital holography in combination with computers become faster, more reliable and highly accurate as an alternative non-contact technique for industrial shape evaluation. For example in digital holography, access to the ...
Fiber optic sensor network for the monitoring of civil
... The security of civil engineering works demands a periodical monitoring of the structures. The current methods (such as triangulation, water levels, vibrating strings or mechanical extensometers) are often of tedious application and require the intervention of specialized operators. The resulting co ...
... The security of civil engineering works demands a periodical monitoring of the structures. The current methods (such as triangulation, water levels, vibrating strings or mechanical extensometers) are often of tedious application and require the intervention of specialized operators. The resulting co ...
Principles of Fiber Optic Communication
... From the local area telephone exchange, at the receiving end, these signals travel via metallic wire pairs to the receiver telephone, where they are converted back into corresponding sound waves. Through such cabled wire-pair telecommunication systems, one can at most send 48 simultaneous telephone ...
... From the local area telephone exchange, at the receiving end, these signals travel via metallic wire pairs to the receiver telephone, where they are converted back into corresponding sound waves. Through such cabled wire-pair telecommunication systems, one can at most send 48 simultaneous telephone ...
Electronic Thesis
... comprised of gold, silicon nitride, and silver multilayers, we achieve the first experimental demonstration of a negative index material at visible frequencies, with potential applications for sub-diffraction-limited microscopy and electromagnetic cloaking. We exploit this tunability of complex plas ...
... comprised of gold, silicon nitride, and silver multilayers, we achieve the first experimental demonstration of a negative index material at visible frequencies, with potential applications for sub-diffraction-limited microscopy and electromagnetic cloaking. We exploit this tunability of complex plas ...
Soliton Interactions and the Formation of Solitonic Patterns
... 1.1 Solitons and the dynamics of pattern formation Everyone in America knows what a fractal is. Take a stroll around any college campus and you will pass by young computer scientists wearing T-shirts emblazoned with brightly colored spiraling patterns. In the corporate world, fractals thrive in the ...
... 1.1 Solitons and the dynamics of pattern formation Everyone in America knows what a fractal is. Take a stroll around any college campus and you will pass by young computer scientists wearing T-shirts emblazoned with brightly colored spiraling patterns. In the corporate world, fractals thrive in the ...
Accurate calculation of the local density of optical states in inverse
... time-resolved fluorescence experiments using emitters with high quantum efficiencies, both enhanced and inhibited fluorescence decay rates have been observed [21]. In parallel to these experiments on 3D crystals, several groups have realized that emission enhancement and partial inhibition can also ...
... time-resolved fluorescence experiments using emitters with high quantum efficiencies, both enhanced and inhibited fluorescence decay rates have been observed [21]. In parallel to these experiments on 3D crystals, several groups have realized that emission enhancement and partial inhibition can also ...
Coherent Control of Atoms and Molecules
... a few of Henry's famous "one-day" experiments in more-or-less a day. At the same time gently nudging me in the direction they, in their wisdom, deemed best for my career. As a result, I have learned far more about a broad range of elds than I could have imagined would have happened during my Ph.D. ...
... a few of Henry's famous "one-day" experiments in more-or-less a day. At the same time gently nudging me in the direction they, in their wisdom, deemed best for my career. As a result, I have learned far more about a broad range of elds than I could have imagined would have happened during my Ph.D. ...
In vivo confocal microscopy of the human cornea
... with confocal microscopy but comparisons of the in vivo (confocal microscopy) and ex vivo (light microscopy) aspects suggest that only the nucleus, or at best, the nucleus and a small portion of the cell body are visualised.17 Neither the keratocyte processes nor the stromal collagen fibres are visi ...
... with confocal microscopy but comparisons of the in vivo (confocal microscopy) and ex vivo (light microscopy) aspects suggest that only the nucleus, or at best, the nucleus and a small portion of the cell body are visualised.17 Neither the keratocyte processes nor the stromal collagen fibres are visi ...
Abstracts for OPTO 2014
... During the past 5-10 years dielectric transmission gratings have found widespread use in the ultraviolet, visible and near-infrared spectral ranges. However, it is very challenging to find an efficient grating structure due to the diffraction efficiency having a non-trivial dependency on the materia ...
... During the past 5-10 years dielectric transmission gratings have found widespread use in the ultraviolet, visible and near-infrared spectral ranges. However, it is very challenging to find an efficient grating structure due to the diffraction efficiency having a non-trivial dependency on the materia ...
Untitled
... Maxwell’s electromagnetic theory of light and its competition with elastic-medium theories of light; theories of the coupling between ether and matter in the contexts of optical dispersion, optical rotation, and the optics of moving body. Chapter 7 describes some highly mathematical contributions to ...
... Maxwell’s electromagnetic theory of light and its competition with elastic-medium theories of light; theories of the coupling between ether and matter in the contexts of optical dispersion, optical rotation, and the optics of moving body. Chapter 7 describes some highly mathematical contributions to ...
Thesis - A. de Castro
... 4.2.8 Three-dimensional gradient refractive index reconstruction algorithm . . . . . . . . . . . . . . . . . . . . . . . . 4.2.9 Analysis of the influence of the gradient refractive index in the optics of the lens . . . . . . . . . . . . . . . . 4.3 Results . . . . . . . . . . . . . . . . . . . . . ...
... 4.2.8 Three-dimensional gradient refractive index reconstruction algorithm . . . . . . . . . . . . . . . . . . . . . . . . 4.2.9 Analysis of the influence of the gradient refractive index in the optics of the lens . . . . . . . . . . . . . . . . 4.3 Results . . . . . . . . . . . . . . . . . . . . . ...
Thesis - UVaDOC - Universidad de Valladolid
... Chapter 6. Distortions of the posterior surface in optical coherence tomography images of the isolated crystalline lens: effect of the lens gradient refractive index 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 Material and methods . . . . . . . . . . . . . . . . ...
... Chapter 6. Distortions of the posterior surface in optical coherence tomography images of the isolated crystalline lens: effect of the lens gradient refractive index 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 Material and methods . . . . . . . . . . . . . . . . ...
Mature Bone in the Eye: A Case of Choroidal Osteoma
... our patient, appear as early lacy hyperfluorescence surrounded with late staining.4,5 Indocyanine green angiography shows early hypofluorescence due to the thick osteoma with late tumor staining.11,12 Bscan ultrasound shows slightly elevated densely hyperechoic concave choroidal mass with prominent ...
... our patient, appear as early lacy hyperfluorescence surrounded with late staining.4,5 Indocyanine green angiography shows early hypofluorescence due to the thick osteoma with late tumor staining.11,12 Bscan ultrasound shows slightly elevated densely hyperechoic concave choroidal mass with prominent ...
Optical Shop Testing
... merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the pu ...
... merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the pu ...
OPTICAL MINERALOGY-2
... radii that are parallel to the vibration direction of light. In isotropic minerals the indicatrix was a sphere, because the refractive index was the same in all directions. In uniaxial minerals, because nomega and nepsilon are not equal, the indicatrix is an ellipsoid, the shape of which is dependan ...
... radii that are parallel to the vibration direction of light. In isotropic minerals the indicatrix was a sphere, because the refractive index was the same in all directions. In uniaxial minerals, because nomega and nepsilon are not equal, the indicatrix is an ellipsoid, the shape of which is dependan ...
Optical Spectroscopy of Spin Ladders
... 1D Heisenberg chains and odd-leg ladders that have gapless excitation spectra. The socalled telephone-number compounds (Sr,La,Ca)14 Cu24 O41 provide excellent realizations of two-leg spin ladders, which are composed of the same corner-sharing plaquettes as the 2D cuprates. High-quality single crysta ...
... 1D Heisenberg chains and odd-leg ladders that have gapless excitation spectra. The socalled telephone-number compounds (Sr,La,Ca)14 Cu24 O41 provide excellent realizations of two-leg spin ladders, which are composed of the same corner-sharing plaquettes as the 2D cuprates. High-quality single crysta ...
Visibility study of graphene multilayer structures Guoquan Teo and
... substrates: quartz and NiFe (60 nm) coated Si wafer. The graphite flakes obtained by mechanical exfoliation were transferred to the substrates which include SLG, BLG and FLG sheets. Subsequently, the contrast and Raman spectra were measured to identify SLG and BLG sheets. After that, a thin layer (~ ...
... substrates: quartz and NiFe (60 nm) coated Si wafer. The graphite flakes obtained by mechanical exfoliation were transferred to the substrates which include SLG, BLG and FLG sheets. Subsequently, the contrast and Raman spectra were measured to identify SLG and BLG sheets. After that, a thin layer (~ ...
Hasan, Ahmed and Mohiuddin
... frequently used to modulate light, since the Kerr effect responds very quickly to changes in electric field. Light can be modulated with these devices at frequencies as high as 10 GHZ Because the Kerr effect is relatively weak, a typical Kerr cell may require voltages as high as 31 KV to achieve com ...
... frequently used to modulate light, since the Kerr effect responds very quickly to changes in electric field. Light can be modulated with these devices at frequencies as high as 10 GHZ Because the Kerr effect is relatively weak, a typical Kerr cell may require voltages as high as 31 KV to achieve com ...
Wavefront aberrations and spectacle lenses part one
... at the various surfaces of each lens or optical element. Aberrations are then determined by calculating the distance of these refracted rays from the intended focal point. Alternatively, the deformation of the corresponding wavefront of light as it passes through the optical system may be also deter ...
... at the various surfaces of each lens or optical element. Aberrations are then determined by calculating the distance of these refracted rays from the intended focal point. Alternatively, the deformation of the corresponding wavefront of light as it passes through the optical system may be also deter ...
reflectance measurement and modelling of high reflectivity
... is the maximum amount of light that can be reflected by the sample and can not be increased by increase film thickness or smoothness. Reflectance measurements are typically divided into two categories, which are internal reflectance measurement by using an attenuated total reflectance (ATR) element ...
... is the maximum amount of light that can be reflected by the sample and can not be increased by increase film thickness or smoothness. Reflectance measurements are typically divided into two categories, which are internal reflectance measurement by using an attenuated total reflectance (ATR) element ...
Faculty of Medicine
... required response, and compensate, or move the laser tracker mirrors to compensate for the new location. The latency period is therefore due to both the processing delay and the mirror readjustment delay. Typical infrared video camera-based tracking systems have a processing delay due to the time it ...
... required response, and compensate, or move the laser tracker mirrors to compensate for the new location. The latency period is therefore due to both the processing delay and the mirror readjustment delay. Typical infrared video camera-based tracking systems have a processing delay due to the time it ...
polarization effects generated through the
... highly focused radially polarized beam provides a large gradient force that helps in the solution of this problem [3, 4]. New effects and phenomena have been observed for optical fields with such unconventional polarization states; likewise, there are industrial applications where radial and azimuth ...
... highly focused radially polarized beam provides a large gradient force that helps in the solution of this problem [3, 4]. New effects and phenomena have been observed for optical fields with such unconventional polarization states; likewise, there are industrial applications where radial and azimuth ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.