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... bandwidth and driving voltage. With respect to standard single-domain structures, larger bandwidths and lower driving voltages can be obtained, thus achieving figure of merits for the electro-optic response that are up to 50% larger. As a demonstration, a chirp-free modulator, having ∼2V switching v ...
2.1. Specifications and designs
... systems may provide advantages in both, optical performance and mechanical properties of the optical coatings. Rugates have shown to be specially interesting for design of notch filters. A lot of theoretical work on design of rugate filters has been done in the last decades. However, only few of the ...
... systems may provide advantages in both, optical performance and mechanical properties of the optical coatings. Rugates have shown to be specially interesting for design of notch filters. A lot of theoretical work on design of rugate filters has been done in the last decades. However, only few of the ...
Diamond chemical-vapor deposition on optical fibers for
... critical steps in developing a fiber coupled single-photon source based on optically active defect centers in diamond. © 2005 American Institute of Physics. 关DOI: 10.1063/1.1890484兴 The availability of precise silica fabrication technologies, flexible waveguiding technologies, and high speed switchi ...
... critical steps in developing a fiber coupled single-photon source based on optically active defect centers in diamond. © 2005 American Institute of Physics. 关DOI: 10.1063/1.1890484兴 The availability of precise silica fabrication technologies, flexible waveguiding technologies, and high speed switchi ...
Technical Article
... In order to verify this SD-OCT sensitivity analysis, we constructed differential SS-OCT and FD-OCT systems. The SS-OCT setup is in Fig. 1(a). This differential interferometer topology allows for the cancellation of DC, excess noise, and autocorrelation terms which otherwise contaminate SD-OCT images ...
... In order to verify this SD-OCT sensitivity analysis, we constructed differential SS-OCT and FD-OCT systems. The SS-OCT setup is in Fig. 1(a). This differential interferometer topology allows for the cancellation of DC, excess noise, and autocorrelation terms which otherwise contaminate SD-OCT images ...
Advantages of Holographic Optical Tweezers
... the maximum displayable traps since for example a trap that has a large deflection consumes a higher spatial bandwidth due to the high grating period it has. The fact that the light modulators we use are phase–mostly modulators reduces the quality of the reconstruction further. However for many holo ...
... the maximum displayable traps since for example a trap that has a large deflection consumes a higher spatial bandwidth due to the high grating period it has. The fact that the light modulators we use are phase–mostly modulators reduces the quality of the reconstruction further. However for many holo ...
Lab 14 - FIber Optics Principles and Position Sensor
... Starting from zero displacement, why does the detected light intensity first INCREASE from zero (region 1) in above figure and then decrease (region 2)? Is there any displacement region where this displacement sensor is linear? What the range of detection (not necessarily when the sensor is line ...
... Starting from zero displacement, why does the detected light intensity first INCREASE from zero (region 1) in above figure and then decrease (region 2)? Is there any displacement region where this displacement sensor is linear? What the range of detection (not necessarily when the sensor is line ...
cut off frequency for different modes
... As seen earlier, has to be real for a propagating mode. The frequency range over which remains real therefore is important information. It can be shown that for to be real the frequency of the wave has to be greater than certain value, called the cut-off frequency. 1. Cutoff frequency is defin ...
... As seen earlier, has to be real for a propagating mode. The frequency range over which remains real therefore is important information. It can be shown that for to be real the frequency of the wave has to be greater than certain value, called the cut-off frequency. 1. Cutoff frequency is defin ...
Demonstration of a large-scale optical exceptional point structure Liang Feng, Xuefeng Zhu,
... mechanics [2] and thus realize unique directional light transport and novel devices [3–9] at the parity-time phase transition point, a type of exceptional points. However, exceptional point is much more general concept, contains broader and richer physics, and should thus be expected in a larger non ...
... mechanics [2] and thus realize unique directional light transport and novel devices [3–9] at the parity-time phase transition point, a type of exceptional points. However, exceptional point is much more general concept, contains broader and richer physics, and should thus be expected in a larger non ...
On the path to Bose-Einstein condensate
... Figure 5: Zeeman shift causes the right transition energies to match with lasers’. Here ML describes the state with vertical component of angular momentum as listed, ωz the resonance frequency without Zeeman shift, and σ the direction of circular polarisation of the laser. for a light beam of inten ...
... Figure 5: Zeeman shift causes the right transition energies to match with lasers’. Here ML describes the state with vertical component of angular momentum as listed, ωz the resonance frequency without Zeeman shift, and σ the direction of circular polarisation of the laser. for a light beam of inten ...
EL26960968
... "photonic crystals" usage matter is presented, these crystals because of having unique linear and nonlinear features are used in optical communications [5]. This naming reason is related to their periodic structure and function in light. In fact, they are periodic items of dielectric materials that ...
... "photonic crystals" usage matter is presented, these crystals because of having unique linear and nonlinear features are used in optical communications [5]. This naming reason is related to their periodic structure and function in light. In fact, they are periodic items of dielectric materials that ...
Experimental realization of three-dimensional indefinite cavities at the nanoscale with
... recently, metamaterials with an ultrahigh refractive index (in the terahertz regime) have been explored26–28. However, the experimental implementation of such a metamaterial at optical frequencies is difficult because of fabrication constraints. Another approach for achieving nanoscale optical caviti ...
... recently, metamaterials with an ultrahigh refractive index (in the terahertz regime) have been explored26–28. However, the experimental implementation of such a metamaterial at optical frequencies is difficult because of fabrication constraints. Another approach for achieving nanoscale optical caviti ...
Unit4
... Consists of a tunable bandpass filter and an optical power meter The light from the input fibre is collimated and applied to the diffraction grating The diffraction grating separates the input light into different angles depending on wavelength The light from the grating is then focused onto an outp ...
... Consists of a tunable bandpass filter and an optical power meter The light from the input fibre is collimated and applied to the diffraction grating The diffraction grating separates the input light into different angles depending on wavelength The light from the grating is then focused onto an outp ...
C-Point singularities in Poincare beams
... Polarization singularities are a type of optical singularities that arise when one of the parameters specifying the polarization of the light is undefined [1]. In particular, C-points are singularities present in a field of polarization ellipses, where the orientation of the ellipse is undefined. Th ...
... Polarization singularities are a type of optical singularities that arise when one of the parameters specifying the polarization of the light is undefined [1]. In particular, C-points are singularities present in a field of polarization ellipses, where the orientation of the ellipse is undefined. Th ...
Enhancement of absorption and color contrast in
... reflectivity spectrum at various points on the sample. We used an optical microscope with a 5, 0.15 NA objective and a halogen light to illuminate the sample, and used an additional port to confocally collect a portion of the reflected light into a multimode optical fiber (400 lm core), which was t ...
... reflectivity spectrum at various points on the sample. We used an optical microscope with a 5, 0.15 NA objective and a halogen light to illuminate the sample, and used an additional port to confocally collect a portion of the reflected light into a multimode optical fiber (400 lm core), which was t ...
Presentation
... Media, characterized by permittivity (or permeability) tensors with opposite signs of diagonal components, exhibit hyperbolic-type dispersion in space of wave vectors. Such media are referred as hyperbolic metamaterials (HMMs). A distinctive feature of such media is a capability to support propagati ...
... Media, characterized by permittivity (or permeability) tensors with opposite signs of diagonal components, exhibit hyperbolic-type dispersion in space of wave vectors. Such media are referred as hyperbolic metamaterials (HMMs). A distinctive feature of such media is a capability to support propagati ...
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.