RAYS, WAVES AND ASYMPTOTICS1 1. Introduction
... Another method is the conversion of the problem into an integral equation by means of Green's functions. But then it is necessary to find some way to solve the integral equation. In very special cases the Wiener-Hopf method can be used for this purpose, but not in general. 6. Approximation methods a ...
... Another method is the conversion of the problem into an integral equation by means of Green's functions. But then it is necessary to find some way to solve the integral equation. In very special cases the Wiener-Hopf method can be used for this purpose, but not in general. 6. Approximation methods a ...
Understanding the concept of resolving power in the Fabry–Perot
... phase difference are related by δ = 2π λ The intensity depends on the thickness d, the reflection coefficient r, the wavelength λ, the intensity a 2 of the incident plane wave and the incidence angle . If the light comes from an extended source from all possible directions , and taking into accoun ...
... phase difference are related by δ = 2π λ The intensity depends on the thickness d, the reflection coefficient r, the wavelength λ, the intensity a 2 of the incident plane wave and the incidence angle . If the light comes from an extended source from all possible directions , and taking into accoun ...
Plasmonic Airy beams with dynamically controlled trajectories Peng Zhang, Sheng Wang,
... ences diffraction and decay during propagation due to the truncation and loss, it maintains its size and intensity much better than the Gaussian beam does, reflecting the nondiffracting nature of the Airy beam. Our experimental results agree well with the numerical simulations. For dynamic control o ...
... ences diffraction and decay during propagation due to the truncation and loss, it maintains its size and intensity much better than the Gaussian beam does, reflecting the nondiffracting nature of the Airy beam. Our experimental results agree well with the numerical simulations. For dynamic control o ...
Applications of Geometric Phase in Optics
... phase that depends on the path traveled by the beam. Suppose that a circularly polarized beam describes a path that coils like a helix (e.g., by traveling inside an optical fiber) and subsequently returns to its original propagation direction. After describing this path, its phase will differ from t ...
... phase that depends on the path traveled by the beam. Suppose that a circularly polarized beam describes a path that coils like a helix (e.g., by traveling inside an optical fiber) and subsequently returns to its original propagation direction. After describing this path, its phase will differ from t ...
Plasmonic Airy beams with dynamically controlled trajectories Peng Zhang, Sheng Wang,
... ences diffraction and decay during propagation due to the truncation and loss, it maintains its size and intensity much better than the Gaussian beam does, reflecting the nondiffracting nature of the Airy beam. Our experimental results agree well with the numerical simulations. For dynamic control o ...
... ences diffraction and decay during propagation due to the truncation and loss, it maintains its size and intensity much better than the Gaussian beam does, reflecting the nondiffracting nature of the Airy beam. Our experimental results agree well with the numerical simulations. For dynamic control o ...
Optical Methods for Tympanic Membrane Characterisation Towards Objective Otoscopy in Otitis Media
... measurement, given that variations in measurement distance were accounted for and that measurement from normally positioned tympanic membranes were used for signal normalization. In conclusion, the studies implicate that for individual otitis diagnosis, the hyperaemic tympanic membrane was separated ...
... measurement, given that variations in measurement distance were accounted for and that measurement from normally positioned tympanic membranes were used for signal normalization. In conclusion, the studies implicate that for individual otitis diagnosis, the hyperaemic tympanic membrane was separated ...
Concept of the equiphase sphere for light scattering by nonspherical
... Figure 3 graphs the FDTD-calculated spheroid total scattering cross section (in units of m 2 ) versus wavelength for the eccentricity b/a ⫽ 0.9 (a ⫽ 5 m, b ⫽ 4.5 m). Figure 3(a) shows the results of the FDTD simulations for the TE mode (solid dots) and the TM mode (open circles). For comparison, t ...
... Figure 3 graphs the FDTD-calculated spheroid total scattering cross section (in units of m 2 ) versus wavelength for the eccentricity b/a ⫽ 0.9 (a ⫽ 5 m, b ⫽ 4.5 m). Figure 3(a) shows the results of the FDTD simulations for the TE mode (solid dots) and the TM mode (open circles). For comparison, t ...
A Survivable Protection and Restoration Scheme using Wavelength
... laser assembly (ITLA) such as modulated grating Y-branch laser (MG-Y) with wide tuning range and nano-second wavelength switching speed is now commercially available [8]. Using such low cost tunable laser transmitter at the ONU can provide cost-effective solution for high bit rate colorless WDM-PON ...
... laser assembly (ITLA) such as modulated grating Y-branch laser (MG-Y) with wide tuning range and nano-second wavelength switching speed is now commercially available [8]. Using such low cost tunable laser transmitter at the ONU can provide cost-effective solution for high bit rate colorless WDM-PON ...
Laser Linewidth Characterization
... Sd(f) is the ordinary direct detection that could be measured with just a photodetector and ESA The second term – the useful heterodyne mixing product which is the convolution of the LO spectrum SLO(ν) with the signal spectrum Ss(ν) The convolution originates from the multiplication of the time-vary ...
... Sd(f) is the ordinary direct detection that could be measured with just a photodetector and ESA The second term – the useful heterodyne mixing product which is the convolution of the LO spectrum SLO(ν) with the signal spectrum Ss(ν) The convolution originates from the multiplication of the time-vary ...
Birefringence dispersion in fused silica for DUV lithography
... Shorter wavelength radiation sources and improvements in the quality of the optical materials used in microlithography stepper systems have been two of the driving forces towards production of integrated circuits with smaller feature sizes. Fused silica lens elements in current lithography tools pos ...
... Shorter wavelength radiation sources and improvements in the quality of the optical materials used in microlithography stepper systems have been two of the driving forces towards production of integrated circuits with smaller feature sizes. Fused silica lens elements in current lithography tools pos ...
Intermittent measurement
... An interesting overview about the history of optical monitoring we can extract from Angus Mac Leod’s article “Evolution of the measurement of Thin Films” 1. In the 18th century, Isaac Newton studied the colours of light reflected from thin films. He found the relation between the thicknesses of thin ...
... An interesting overview about the history of optical monitoring we can extract from Angus Mac Leod’s article “Evolution of the measurement of Thin Films” 1. In the 18th century, Isaac Newton studied the colours of light reflected from thin films. He found the relation between the thicknesses of thin ...
Optical Comms 2004 (Summer)
... Overall then it is apparent that there is significant trade-off between a high acceptance angle and a large fibre bandwidth. The impact of this trade-off in an actual optical fibre system is important, for good coupling efficiency for optical sources such as lasers or particularly LEDs a high fibre ...
... Overall then it is apparent that there is significant trade-off between a high acceptance angle and a large fibre bandwidth. The impact of this trade-off in an actual optical fibre system is important, for good coupling efficiency for optical sources such as lasers or particularly LEDs a high fibre ...
Multimode or Single-Mode Optical Fiber
... transceiver options, greater bandwidth and is less sensitive to handling of the cables and patch cords than is conventional single-mode optical fiber. Which Multimode Fiber Type and Why? At one time, the network designer or end user who specified multimode optical fiber for short reach systems had t ...
... transceiver options, greater bandwidth and is less sensitive to handling of the cables and patch cords than is conventional single-mode optical fiber. Which Multimode Fiber Type and Why? At one time, the network designer or end user who specified multimode optical fiber for short reach systems had t ...
POLARIZATION
... through that plane. An electromagnetic wave is frequently composed of (or can Figure 1. Polarization Coordinates be broken down into) two orthogonal components as shown in Figure 1. This may be due to the arrangement of power input leads to various points on a flat antenna, or due to an interaction ...
... through that plane. An electromagnetic wave is frequently composed of (or can Figure 1. Polarization Coordinates be broken down into) two orthogonal components as shown in Figure 1. This may be due to the arrangement of power input leads to various points on a flat antenna, or due to an interaction ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.