Partially coherent beam shaping and imaging
... order to make numerical calculations feasible, so-called modal approaches [46–51] are used extensively, especially to describe partial spatial coherence. Such modal approaches, in which the partially coherent field is represented as a superposition of fully coherent fields, lead to the evaluation of ...
... order to make numerical calculations feasible, so-called modal approaches [46–51] are used extensively, especially to describe partial spatial coherence. Such modal approaches, in which the partially coherent field is represented as a superposition of fully coherent fields, lead to the evaluation of ...
Application note: Stripping cleaving and coupling to
... up and travel around either side of the hole and meet on a line pointing away from the scribing point. These lines are sometimes visible under a microscope (see LMA image below). Typically, the step height of those lines are <200 nm. For simple fiber-end inspection, using a scribing tool (e.g. a scr ...
... up and travel around either side of the hole and meet on a line pointing away from the scribing point. These lines are sometimes visible under a microscope (see LMA image below). Typically, the step height of those lines are <200 nm. For simple fiber-end inspection, using a scribing tool (e.g. a scr ...
Patterned dielectric membranes designed for optical sensing
... In combination with chemical surface functionalization, the detector can potentially arrange for specific capture and detection of particles in the form of proteins, deoxyribonucleic acid (DNA), ribonucleic acid (RNA) or viruses. I estimate the detection limit of the present detector to be particles ...
... In combination with chemical surface functionalization, the detector can potentially arrange for specific capture and detection of particles in the form of proteins, deoxyribonucleic acid (DNA), ribonucleic acid (RNA) or viruses. I estimate the detection limit of the present detector to be particles ...
Engineering nonlinearities in nanoscale optical systems
... Our review is organized as follows: first, the optical properties of SPWs are reviewed in Section 2, including methods for dispersion engineering of these tightly confined waveguides and their limitations. In Section 3, a discussion of the basic nonlinear optical response of Si is presented. This se ...
... Our review is organized as follows: first, the optical properties of SPWs are reviewed in Section 2, including methods for dispersion engineering of these tightly confined waveguides and their limitations. In Section 3, a discussion of the basic nonlinear optical response of Si is presented. This se ...
Laser Medicine and Medical Imaging – J. G. Fujimoto
... imaging with structural imaging for OCT. The Doppler catheter can be used for assessment of blood flow within a vessel as well as the fine structures within the vessel wall. A prototype Doppler catheter with an outer diameter of ~410 µm has been developed and demonstrated for measuring the intralumi ...
... imaging with structural imaging for OCT. The Doppler catheter can be used for assessment of blood flow within a vessel as well as the fine structures within the vessel wall. A prototype Doppler catheter with an outer diameter of ~410 µm has been developed and demonstrated for measuring the intralumi ...
Multiple-image digital photography
... resample fan beams to parallel beams extendable (with difficulty) to cone beams in 3D modern scanners use helical capture paths scattering degrades reconstruction ...
... resample fan beams to parallel beams extendable (with difficulty) to cone beams in 3D modern scanners use helical capture paths scattering degrades reconstruction ...
Fermat`s Principle and the Geometric Mechanics of
... conditions in (2.4). We choose the arc-length variable ds2 = dr · dr, so that |ṙ| = 1 for ṙ := dr/ds. (This means that d|ṙ|/ds = 0.) Consequently, the three-dimension eikonal equation (2.7) emerges for the ray path r ∈ R3. ...
... conditions in (2.4). We choose the arc-length variable ds2 = dr · dr, so that |ṙ| = 1 for ṙ := dr/ds. (This means that d|ṙ|/ds = 0.) Consequently, the three-dimension eikonal equation (2.7) emerges for the ray path r ∈ R3. ...
Ans: Optical Fiber Communication System
... An optical fiber (or optical fiber) is a flexible, transparent fiber made of extruded glass (silica) or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber. The field of applied science and engineering conc ...
... An optical fiber (or optical fiber) is a flexible, transparent fiber made of extruded glass (silica) or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber. The field of applied science and engineering conc ...
pdf file
... matching condition is satisfied at THz wave frequency of 2.1 THz. For the simulations under perfect phase matching conditions, the THz refractive index was set constant at the values of this frequency. Absorption in the THz region that is not included in the THz dispersion relation of Eq. (1) has be ...
... matching condition is satisfied at THz wave frequency of 2.1 THz. For the simulations under perfect phase matching conditions, the THz refractive index was set constant at the values of this frequency. Absorption in the THz region that is not included in the THz dispersion relation of Eq. (1) has be ...
Retrieving microphysical properties of dust
... spheroidal shapes that optimally mimics the scattering properties of dust particles does not necessarily correlate in any clear way with the physical shapes of the target particles and that at different wavelengths or for different scattering quantities the sets of spheroids that optimally reproduce ...
... spheroidal shapes that optimally mimics the scattering properties of dust particles does not necessarily correlate in any clear way with the physical shapes of the target particles and that at different wavelengths or for different scattering quantities the sets of spheroids that optimally reproduce ...
Optical Fibers and Fiber-Optic Communications
... frequency can result in a small but measurable change in index profile, resulting in profile dispersion (this contribution, being small, is often neglected). Material, waveguide, and profile dispersion act together, the waveguide dispersion being of opposite sign to that of the material dispersion. ...
... frequency can result in a small but measurable change in index profile, resulting in profile dispersion (this contribution, being small, is often neglected). Material, waveguide, and profile dispersion act together, the waveguide dispersion being of opposite sign to that of the material dispersion. ...
Applications of spatial light modulators for optical trapping and
... light field. This phenomenon could be explained by an asymmetric, prism-like particle shape, an asymmetric radial intensity profile of the projected light field, and the particle confinement in the air-liquid interface (Jesacher et al., 2006c). Generally, the forces on microparticles emerging in opt ...
... light field. This phenomenon could be explained by an asymmetric, prism-like particle shape, an asymmetric radial intensity profile of the projected light field, and the particle confinement in the air-liquid interface (Jesacher et al., 2006c). Generally, the forces on microparticles emerging in opt ...
Distributed Temperature Sensing Using Stimulated
... Authorized licensed use limited to: Chinese University of Hong Kong. Downloaded on April 16,2010 at 07:38:52 UTC from IEEE Xplore. Restrictions apply. ...
... Authorized licensed use limited to: Chinese University of Hong Kong. Downloaded on April 16,2010 at 07:38:52 UTC from IEEE Xplore. Restrictions apply. ...
Modeling and simulation of surface profile forming process of
... many methods to fabricate in-plane microlenses and microlens arrays: Use the surface tension at reflow temperature of the polymer fabrication [22, 23], hot-embossing to imprint microlenses or microlens array in PMMA [24], isotropic wet-etching of glass [25], gray-tone lithography, and etc. The reflo ...
... many methods to fabricate in-plane microlenses and microlens arrays: Use the surface tension at reflow temperature of the polymer fabrication [22, 23], hot-embossing to imprint microlenses or microlens array in PMMA [24], isotropic wet-etching of glass [25], gray-tone lithography, and etc. The reflo ...
Optical Time Domain Reflectometry (OTDR)
... transmitted through the PBS by 90° when passing the plate twice. Back-reflected light is therefore steered by the PBS towards the measurement detector. Afterwards the laser beam is coupled by a microscope objective (9) into the fiber, which is mounted in an XY holder allowing — in combination with t ...
... transmitted through the PBS by 90° when passing the plate twice. Back-reflected light is therefore steered by the PBS towards the measurement detector. Afterwards the laser beam is coupled by a microscope objective (9) into the fiber, which is mounted in an XY holder allowing — in combination with t ...
MEASUREMENT AND COMPARISON OF REFRACTIVE INDEX OF
... I, Shafudah Natangue Heita, declare hereby that this study is a true reflection of my own research, and that this work, or part thereof has not been submitted for a degree in any other institution of higher education. No part of this thesis may be reproduced, stored in any retrieval system, or trans ...
... I, Shafudah Natangue Heita, declare hereby that this study is a true reflection of my own research, and that this work, or part thereof has not been submitted for a degree in any other institution of higher education. No part of this thesis may be reproduced, stored in any retrieval system, or trans ...
Ray-optics cloaking devices for large objects in incoherent natural light
... hide objects roughly one wavelength large (an optical wavelength equates to the scale of single-celled organisms) have been experimentally demonstrated in both the microwave4,7,10 and optical spectrum8,9,11. Successful attempts have also been made to allow the cloaking technology to be used at much ...
... hide objects roughly one wavelength large (an optical wavelength equates to the scale of single-celled organisms) have been experimentally demonstrated in both the microwave4,7,10 and optical spectrum8,9,11. Successful attempts have also been made to allow the cloaking technology to be used at much ...
Low-Temperature Bonding for Silicon-Based Micro
... and data processing. In addition, the fabrication of Si-based devices is compatible with parallel processing which can potentially lower the cost. One practical example of such system is the early diagnosis and monitoring of human diseases using autofluoresnce or fluorescence lifetime imaging [1]. A ...
... and data processing. In addition, the fabrication of Si-based devices is compatible with parallel processing which can potentially lower the cost. One practical example of such system is the early diagnosis and monitoring of human diseases using autofluoresnce or fluorescence lifetime imaging [1]. A ...
Optical aberration
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An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements.Aberration leads to blurring of the image produced by an image-forming optical system. Makers of optical instruments need to correct optical systems to compensate for aberration.The articles on reflection, refraction and caustics discuss the general features of reflected and refracted rays.