Optical Fibers and Fiber-Optic Communications
... self-interference condition are known as meridional rays. There are classes of rays which are nearly totally internally reflected and may still propagate some distance down the fiber. These are known as leaky rays (or modes). Other geometrical paths are not at all confined in the core, but internall ...
... self-interference condition are known as meridional rays. There are classes of rays which are nearly totally internally reflected and may still propagate some distance down the fiber. These are known as leaky rays (or modes). Other geometrical paths are not at all confined in the core, but internall ...
Two-step DFT propagation - MZA Associates Corporation
... spacings and dimensions for the special case of propagation through vacuum or ideal dielectric media, given two limiting apertures. Next, we will present a simple step-by-step procedure to reduce any wave optics simulation problem, including propagation through optical systems and aberrating media, ...
... spacings and dimensions for the special case of propagation through vacuum or ideal dielectric media, given two limiting apertures. Next, we will present a simple step-by-step procedure to reduce any wave optics simulation problem, including propagation through optical systems and aberrating media, ...
McIntyre, Stuart (2013) Limitations to light microscope resolution in
... Fluorescence imaging has become a vital tool for understanding cardiac cell function. With the advent of calcium-sensitive and fast response voltage-sensitive dyes, it is now possible to gain complex physiological recordings from various cardiac muscle preparations, while simultaneously optically se ...
... Fluorescence imaging has become a vital tool for understanding cardiac cell function. With the advent of calcium-sensitive and fast response voltage-sensitive dyes, it is now possible to gain complex physiological recordings from various cardiac muscle preparations, while simultaneously optically se ...
Optical Fabrication - University of Arizona
... 2.3 Support methods for fabrication Most optical fabrication processes begin with the extremely important consideration of holding onto the part during subsequent fabrication steps. Numerous factors must be considered when choosing the support method: part size, thickness, shape, expansion coeffici ...
... 2.3 Support methods for fabrication Most optical fabrication processes begin with the extremely important consideration of holding onto the part during subsequent fabrication steps. Numerous factors must be considered when choosing the support method: part size, thickness, shape, expansion coeffici ...
Practitioner`s guide to laser pulse propagation models and simulation
... es transverse to the propagation axis. Thus, E = Ees , J = Jes , P = P es . There are actually two assumptions in one: First the electric field and the medium response (current J, nonlinear polarization P) are transverse, i.e., perpendicular to the propagation direction determined by the wave number ...
... es transverse to the propagation axis. Thus, E = Ees , J = Jes , P = P es . There are actually two assumptions in one: First the electric field and the medium response (current J, nonlinear polarization P) are transverse, i.e., perpendicular to the propagation direction determined by the wave number ...
Invisibility cloak - Department of Theoretical Physics
... angle. But to make a perfect invisibility device one needs more than that. Because of the wave nature of light it is possible to hide object that are smaller than the wavelenght, but that is not our goal. To make the perfect invisibilty device, light would have to be guided around the object, so it ...
... angle. But to make a perfect invisibility device one needs more than that. Because of the wave nature of light it is possible to hide object that are smaller than the wavelenght, but that is not our goal. To make the perfect invisibilty device, light would have to be guided around the object, so it ...
LIGHT GENERATION AND MANIPULATION FROM NONLINEAR RANDOMLY DISTRIBUTED DOMAINS IN SBN
... nonlinear light generation in random structures. Additionally, inspired by recent works in the control of linear light scattering through random media, we implement a novel method to re-concentrate the scattered light generation in random nonlinear materials. This chapter contains three sections. Th ...
... nonlinear light generation in random structures. Additionally, inspired by recent works in the control of linear light scattering through random media, we implement a novel method to re-concentrate the scattered light generation in random nonlinear materials. This chapter contains three sections. Th ...
A few words about possible applications
... 200 nm – 10 µm, impact the propagation of light inside them in a way similar to how semiconductor crystals impact the propagation of electrons. The solution of Maxwell equations for such structures shows the presence of wavelengths forbidden for the light propagation, which are called photonic band ...
... 200 nm – 10 µm, impact the propagation of light inside them in a way similar to how semiconductor crystals impact the propagation of electrons. The solution of Maxwell equations for such structures shows the presence of wavelengths forbidden for the light propagation, which are called photonic band ...
Lab 71 in TFFM08 Fiber Optics
... Optical fibers are a kind of waveguides, which are usually made of some kind of glass, can potentially be very long (hundreds of kilometers), and are – in contrast to other waveguides – fairly flexible. The most commonly used glass is silica (quartz glass, amorphous silicon dioxide = SiO2), either i ...
... Optical fibers are a kind of waveguides, which are usually made of some kind of glass, can potentially be very long (hundreds of kilometers), and are – in contrast to other waveguides – fairly flexible. The most commonly used glass is silica (quartz glass, amorphous silicon dioxide = SiO2), either i ...
Optical bandwidth and fabrication tolerances of multimode
... are positioned at W/3 and 2W/3, in order not to excite the modes 2 , 5, 8 , - . .. For a geometrical width of W = 18 prn, the equivalent width is We, = 19.2 pm and 19.0 pm for TE and TM, respectively; this is due to the lateral penetration of the evanescent fields at the side of the MMI section. The ...
... are positioned at W/3 and 2W/3, in order not to excite the modes 2 , 5, 8 , - . .. For a geometrical width of W = 18 prn, the equivalent width is We, = 19.2 pm and 19.0 pm for TE and TM, respectively; this is due to the lateral penetration of the evanescent fields at the side of the MMI section. The ...
Polarization Switching and Fatigue Anisotropy in RElaxor
... relaxor based and normal ferroelectrics. Normal ferroelectric BaTiO3 and its solid solutions with BaZrO3 did not exhibit fatigue anisotropy in the rhombohedral phase in [001]C orientations. From these studies it seems a combination of engineered domain states (orientation) and relaxor nature is requ ...
... relaxor based and normal ferroelectrics. Normal ferroelectric BaTiO3 and its solid solutions with BaZrO3 did not exhibit fatigue anisotropy in the rhombohedral phase in [001]C orientations. From these studies it seems a combination of engineered domain states (orientation) and relaxor nature is requ ...
Metastable optical gratings in compound semiconductors
... EL2 and DX systems. The underlying principle for both systems is optically induced Fermi-level modulation, in which the gratings are viewed as modulation-doped superlattices in thermal equilibrium with stable defect states. The superlattices are assumed to be generated adiabatically, with slow incre ...
... EL2 and DX systems. The underlying principle for both systems is optically induced Fermi-level modulation, in which the gratings are viewed as modulation-doped superlattices in thermal equilibrium with stable defect states. The superlattices are assumed to be generated adiabatically, with slow incre ...
Bimodal waveguide interferometer device based high sensitive biosensing
... SEM micrographs of a pillar-array microcavity and a photonic crystal microcavity. . . . . . . . . . . . . . . . . . . . . . . . . . . Scheme of a interferometer based on Mach-Zehnder configuration Cosine dependence of interferometric signals. . . . . . . . . . . . Optical arrangement and representat ...
... SEM micrographs of a pillar-array microcavity and a photonic crystal microcavity. . . . . . . . . . . . . . . . . . . . . . . . . . . Scheme of a interferometer based on Mach-Zehnder configuration Cosine dependence of interferometric signals. . . . . . . . . . . . Optical arrangement and representat ...
Porous Waveguide in the Kretschmann Configuration for Small Molecule Detection
... air; however, when the sensor is used with a microfluidics flow cell, the medium could be water or a buffer solution. Light is coupled into the PSi layer via a cubic zirconia prism with refractive index n1=2.1252 at wavelength of λ=1550 nm. We consider transverse-electric (TE) polarized light in thi ...
... air; however, when the sensor is used with a microfluidics flow cell, the medium could be water or a buffer solution. Light is coupled into the PSi layer via a cubic zirconia prism with refractive index n1=2.1252 at wavelength of λ=1550 nm. We consider transverse-electric (TE) polarized light in thi ...
Tensorial split-field finite-difference time-domain approach for second- and third-order nonlinear materials
... one of the most successful tools in calculating the time evolution of electromagnetic fields in many different types of structures. In the case of laterally periodic media, the FDTD technique can be modified to take full advantage of the periodicity of the problem. One such modification is the so-ca ...
... one of the most successful tools in calculating the time evolution of electromagnetic fields in many different types of structures. In the case of laterally periodic media, the FDTD technique can be modified to take full advantage of the periodicity of the problem. One such modification is the so-ca ...
QUANTITIES, TERMINOLOGY, AND SYMBOLS IN
... change (by radiationless transition or chemical reaction), molecular alignment, vibrational excitation, rotational excitation, electronic excitation, concentration change, photoinduced volume change, creation of electric field (charge creation), clustering, and so on. Absorption changes induced by s ...
... change (by radiationless transition or chemical reaction), molecular alignment, vibrational excitation, rotational excitation, electronic excitation, concentration change, photoinduced volume change, creation of electric field (charge creation), clustering, and so on. Absorption changes induced by s ...
356961: Internet Protocols - ECSE - Rensselaer Polytechnic Institute
... Even in single mode, there are 2 linearly independent solutions for every (to maxwell’s equations) State of polarization (SOP): distribution of light energy between the (two transverse) polarization modes Ex and Ey Polarization Vector: The electric dipole moment per unit volume In perfectly circul ...
... Even in single mode, there are 2 linearly independent solutions for every (to maxwell’s equations) State of polarization (SOP): distribution of light energy between the (two transverse) polarization modes Ex and Ey Polarization Vector: The electric dipole moment per unit volume In perfectly circul ...
Measuring amplitude and phase in optical fields with
... require coherent detection methods, in particular heterodyne scanning probe microscope (heterodyne SNOM), which allow the measurement of amplitude and phase of the optical field with sub-wavelength resolution. We discuss some basic properties of phase distributions. Light waves diffracted by microst ...
... require coherent detection methods, in particular heterodyne scanning probe microscope (heterodyne SNOM), which allow the measurement of amplitude and phase of the optical field with sub-wavelength resolution. We discuss some basic properties of phase distributions. Light waves diffracted by microst ...
Coatings - CVI Laser Optics
... Light waves that are exactly out of phase with one another (by 180º or π radians) undergo destructive interference, and, as shown in the figure, their amplitudes cancel. In intermediate cases, total amplitude is given by the vector resultant, and intensity is given by the square of amplitude. ...
... Light waves that are exactly out of phase with one another (by 180º or π radians) undergo destructive interference, and, as shown in the figure, their amplitudes cancel. In intermediate cases, total amplitude is given by the vector resultant, and intensity is given by the square of amplitude. ...
Birefringence
Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic materials are said to be birefringent (or birefractive). The birefringence is often quantified as the maximum difference between refractive indices exhibited by the material. Crystals with asymmetric crystal structures are often birefringent, as are plastics under mechanical stress.Birefringence is responsible for the phenomenon of double refraction whereby a ray of light, when incident upon a birefringent material, is split by polarization into two rays taking slightly different paths. This effect was first described by the Danish scientist Rasmus Bartholin in 1669, who observed it in calcite, a crystal having one of the strongest birefringences. However it was not until the 19th century that Augustin-Jean Fresnel described the phenomenon in terms of polarization, understanding light as a wave with field components in transverse polarizations (perpendicular to the direction of the wave vector).