Electron beam lithography designed silver nano
... EBL, on the other hand, is a modified SEM system that has superior properties compared to other optical or chemical patterning techniques, such as the precise placement and design of arbitrarily shaped NPs with a large selection of geometries of various sizes with fine features. It offers a high res ...
... EBL, on the other hand, is a modified SEM system that has superior properties compared to other optical or chemical patterning techniques, such as the precise placement and design of arbitrarily shaped NPs with a large selection of geometries of various sizes with fine features. It offers a high res ...
Designing Fiber Optic Systems
... Electrical to optical video converters generally have a BNC coaxial cable connector at the input and a fiber optic connector on the output. In order to get the digital bits down the fiber optic cable, a light emitting device is used, onto which the digital signal is modulated. Either a laser or an L ...
... Electrical to optical video converters generally have a BNC coaxial cable connector at the input and a fiber optic connector on the output. In order to get the digital bits down the fiber optic cable, a light emitting device is used, onto which the digital signal is modulated. Either a laser or an L ...
Imaging optical singularities; Understanding the duality of C-points and optical vortices
... superposition of a circularly-polarized optical vortex field with an oppositely-polarized planar field.7, 8 Optical vortices are very sensitive to perturbations, to the point that optical vortices with topological charge greater than one are difficult to preserve and measure.2, 9 The latter is often ...
... superposition of a circularly-polarized optical vortex field with an oppositely-polarized planar field.7, 8 Optical vortices are very sensitive to perturbations, to the point that optical vortices with topological charge greater than one are difficult to preserve and measure.2, 9 The latter is often ...
Depth Estimation and Focus Recovery
... Then, we discuss the issue on focus recovery. There exist some problems in optical image processing like aberrations of camera, structure of zoom lens, blurring model and geometric optics and so on. Later, we will make a introduction to Fourier Optics and optics analyzed by the linear canonical tran ...
... Then, we discuss the issue on focus recovery. There exist some problems in optical image processing like aberrations of camera, structure of zoom lens, blurring model and geometric optics and so on. Later, we will make a introduction to Fourier Optics and optics analyzed by the linear canonical tran ...
Waveguide Dispersion
... Combining intermodal and intramodal dispersions Consider a graded index fiber with a core diameter of 30 mm and a refractive index of 1.474 at the center of the core and a cladding refractive index of 1.453. Suppose that we use a laser diode emitter with a spectral linewidth of 3 nm to transmit alo ...
... Combining intermodal and intramodal dispersions Consider a graded index fiber with a core diameter of 30 mm and a refractive index of 1.474 at the center of the core and a cladding refractive index of 1.453. Suppose that we use a laser diode emitter with a spectral linewidth of 3 nm to transmit alo ...
Low-Coherence Fibre-Optic Interferometric Sensors
... fringe in the interference fringe pattern. It is so important because this position refers to the zero value of the OPD and therefore gives information about the measurand. The intensity difference between the central fringe and the first side fringe can be so small that the signal-to-noise ratio re ...
... fringe in the interference fringe pattern. It is so important because this position refers to the zero value of the OPD and therefore gives information about the measurand. The intensity difference between the central fringe and the first side fringe can be so small that the signal-to-noise ratio re ...
Lens equation for flat lenses made with hyperbolic
... at near-field distance smaller than λ=4. This process differs from the evanescent amplification in perfect lenses that theoretically allows to focalize an image at distances larger than λ with a super resolution. However, in both parabolic and hyperbolic lenses the presence of plasmonic modes have b ...
... at near-field distance smaller than λ=4. This process differs from the evanescent amplification in perfect lenses that theoretically allows to focalize an image at distances larger than λ with a super resolution. However, in both parabolic and hyperbolic lenses the presence of plasmonic modes have b ...
Generation of radially and azimuthally polarized light by optical
... subwavelength circular nanoslits, the total optical transmission could reach 80% in the visible wavelength range [27]. When its diameter is larger than the incident wavelengths, an individual circular nanoslit can be utilized to generate and focus surface plasmon waves, and thus was denoted as plasm ...
... subwavelength circular nanoslits, the total optical transmission could reach 80% in the visible wavelength range [27]. When its diameter is larger than the incident wavelengths, an individual circular nanoslit can be utilized to generate and focus surface plasmon waves, and thus was denoted as plasm ...
Femtosecond self-guided atmospheric light strings
... self-focusing. Various theoretical explanations for the formation of this novel light guide have been put forward by different authors. The critical power for cw self-focusing in air is estimated to be about 1–2 GW. The first explanation offered for this phenomenon was that a stationary waveguide co ...
... self-focusing. Various theoretical explanations for the formation of this novel light guide have been put forward by different authors. The critical power for cw self-focusing in air is estimated to be about 1–2 GW. The first explanation offered for this phenomenon was that a stationary waveguide co ...
Demonstration of high waveguide bending efficiency (>90%) in a m wavelengths µ
... In Fig. 7, the measured η is plotted as function of frequency ω. Different symbols represent data taken on samples with different a’s for TE polarization. The two dash lines represent valence band (VB) edge at ω=0.255 and conduction band (CB) edge at ω=0.325 respectively. The band edge positions are ...
... In Fig. 7, the measured η is plotted as function of frequency ω. Different symbols represent data taken on samples with different a’s for TE polarization. The two dash lines represent valence band (VB) edge at ω=0.255 and conduction band (CB) edge at ω=0.325 respectively. The band edge positions are ...
High optical efficiency and photon noise limited sensitivity of microwave
... submillimeter Array.2 The desired sensors should have a background limited sensitivity and a high optical efficiency and enable arrays of up to megapixels in size. The most promising candidates to fulfill these requirements are microwave kinetic inductance detectors (MKIDs)3 due to their inherent po ...
... submillimeter Array.2 The desired sensors should have a background limited sensitivity and a high optical efficiency and enable arrays of up to megapixels in size. The most promising candidates to fulfill these requirements are microwave kinetic inductance detectors (MKIDs)3 due to their inherent po ...
Synopsis by Scott Gibb
... ways of holding the optic during the different fabrication stages, and typically one does not want to distort the optic during critical stages since this would show up as a disfigure in the final product. Blocking is a term used for holding the optic, typically by some larger block of material. Hold ...
... ways of holding the optic during the different fabrication stages, and typically one does not want to distort the optic during critical stages since this would show up as a disfigure in the final product. Blocking is a term used for holding the optic, typically by some larger block of material. Hold ...
Direct Characterization of Plasmonic Slot Waveguides
... (Figure 4i) of Ez field. As expected from the mode-field distribution (Figure 1a, inset), Ez field magnitude is zero in the middle and opposite in sign on both sides of the waveguide (Figure 4j). The filtering procedure was applied to all measurements (see Supporting Information for more details) made i ...
... (Figure 4i) of Ez field. As expected from the mode-field distribution (Figure 1a, inset), Ez field magnitude is zero in the middle and opposite in sign on both sides of the waveguide (Figure 4j). The filtering procedure was applied to all measurements (see Supporting Information for more details) made i ...
Image reconstruction in diffuse optical tomography based on
... uniqueness of the inverse problem it cannot be determined using frequency domain data. Image reconstruction through the use of higher ordered models is presented. It is demonstrated that at higher orders (for example SP7) the image reconstruction becomes highly under-determined due to the large incr ...
... uniqueness of the inverse problem it cannot be determined using frequency domain data. Image reconstruction through the use of higher ordered models is presented. It is demonstrated that at higher orders (for example SP7) the image reconstruction becomes highly under-determined due to the large incr ...
A Reliable Method For Extraction Of Material Parameters In
... and . Starting with a good estimation of and and repeating the whole procedure described in this paragraph, one will converge to the solution after a few iterations. The principle of this new extraction procedure that takes into ...
... and . Starting with a good estimation of and and repeating the whole procedure described in this paragraph, one will converge to the solution after a few iterations. The principle of this new extraction procedure that takes into ...
Phase-preserving chirped-pulse optical parametric amplification to
... (CPOPA) is rapidly emerging as an attractive alternative to conventional stimulated-emission-based chirped-pulse amplif ier (CPA) systems for the amplification of ultrashort pulses. Large single-pass parametric gains, of the order of 107 , are in principle possible by propagation through only millim ...
... (CPOPA) is rapidly emerging as an attractive alternative to conventional stimulated-emission-based chirped-pulse amplif ier (CPA) systems for the amplification of ultrashort pulses. Large single-pass parametric gains, of the order of 107 , are in principle possible by propagation through only millim ...
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.