An ultrasmall wavelength-selective channel drop switch
... The drop efficiency has been controlled by 12.5 dB and gap change of 600 nm. © 2009 American Institute of Physics. 关doi:10.1063/1.3254247兴 Photonic crystals 共PCs兲,1–7 which can confine light in micro/nanoregions, have great potential as integrated optical circuits and highly efficient photonic devic ...
... The drop efficiency has been controlled by 12.5 dB and gap change of 600 nm. © 2009 American Institute of Physics. 关doi:10.1063/1.3254247兴 Photonic crystals 共PCs兲,1–7 which can confine light in micro/nanoregions, have great potential as integrated optical circuits and highly efficient photonic devic ...
Adaptive secondary mirrors
... Result of previous calculation: • If sodium layer is illuminated with a single frequency laser tuned to the peak of the D2 line only a few per cent (of order 10 MHz/1GHz) of the atoms travel in a direction to interact at all with the radiation field. • These atoms interact strongly with the radiati ...
... Result of previous calculation: • If sodium layer is illuminated with a single frequency laser tuned to the peak of the D2 line only a few per cent (of order 10 MHz/1GHz) of the atoms travel in a direction to interact at all with the radiation field. • These atoms interact strongly with the radiati ...
Development of a high precision interferometric set-up for the
... PMD in time domain. Over last few years there has been significant work carried out using interferometric method to measure PMD in single mode ordinary optical fiber widely used in telecommunication applications [3,4]. The designed interferometric set-up is not only useful to measure the PMD of stan ...
... PMD in time domain. Over last few years there has been significant work carried out using interferometric method to measure PMD in single mode ordinary optical fiber widely used in telecommunication applications [3,4]. The designed interferometric set-up is not only useful to measure the PMD of stan ...
Pulse Propagation in Optical Fibers
... he appearance of optical fibers drastically changed the paradigm of data transmission, because of two main advantages that make it particularly in relation to wires: The optical fibers are completely immune to electromagnetic interference as they are made of dielectric material capable of transmit ...
... he appearance of optical fibers drastically changed the paradigm of data transmission, because of two main advantages that make it particularly in relation to wires: The optical fibers are completely immune to electromagnetic interference as they are made of dielectric material capable of transmit ...
``Interaction-free`` imaging - Vienna Center for Quantum Science and
... IFM’s exceeds one-half and in principle can be made arbitrarily close to unity, i.e., the probability of absorption can be made arbitrarily close to zero. In an experiment using a high- ...
... IFM’s exceeds one-half and in principle can be made arbitrarily close to unity, i.e., the probability of absorption can be made arbitrarily close to zero. In an experiment using a high- ...
Study on Supervision of Wavelength Division Multiplexing
... It is well-known that the traditional access networks based on coaxial cables or twisted pair cables have very limited bandwidth-distance product. At the data rate of 100 Mb/s, the transmission distance will be limited to less than 100 meters and highly advanced transmission technologies are require ...
... It is well-known that the traditional access networks based on coaxial cables or twisted pair cables have very limited bandwidth-distance product. At the data rate of 100 Mb/s, the transmission distance will be limited to less than 100 meters and highly advanced transmission technologies are require ...
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes
... array, e.g. frequency selective surfaces (for use with wavelengths longer than the infra-red light H01Q 15/0006)} Definition statement This place covers: Filters in which the spectral filtering is performed by a conductive grid or mesh. The background is that for microwave optics, there has long exi ...
... array, e.g. frequency selective surfaces (for use with wavelengths longer than the infra-red light H01Q 15/0006)} Definition statement This place covers: Filters in which the spectral filtering is performed by a conductive grid or mesh. The background is that for microwave optics, there has long exi ...
Super-Resolution Microscopy: Interference and Pattern Techniques
... In fluorescence microscopy, the wavelength of the emission light is close to that of the excitation light (λem ≈ λex ). Hence, the reciprocal grating period of the smallest possible illumination pattern approximates the cut-off frequency kcut-off . The delta functions of the Fourier-transformed illum ...
... In fluorescence microscopy, the wavelength of the emission light is close to that of the excitation light (λem ≈ λex ). Hence, the reciprocal grating period of the smallest possible illumination pattern approximates the cut-off frequency kcut-off . The delta functions of the Fourier-transformed illum ...
Representation of a nonspherical ice particle by a collection of
... (NGW03, their Figure 7). This ‘‘equidimensional aberration’’ decreases for both larger and smaller aspect ratios (columns and plates respectively). For the example just cited, gs gx switches from positive to negative for hexagonal prisms with aspect ratios of approximately 1/10 (plates) and 10 (co ...
... (NGW03, their Figure 7). This ‘‘equidimensional aberration’’ decreases for both larger and smaller aspect ratios (columns and plates respectively). For the example just cited, gs gx switches from positive to negative for hexagonal prisms with aspect ratios of approximately 1/10 (plates) and 10 (co ...
Module P6.4 Optical instruments
... A small object is placed on the optical axis, 20 cm away from a concave mirror with radius of curvature 15 cm. Describe qualitatively the nature and position of the image formed and indicate how this will change as the object is moved along the axis towards the mirror, so that it reaches a final pos ...
... A small object is placed on the optical axis, 20 cm away from a concave mirror with radius of curvature 15 cm. Describe qualitatively the nature and position of the image formed and indicate how this will change as the object is moved along the axis towards the mirror, so that it reaches a final pos ...
Single-Mode Optical Waveguides and
... cross sections are the building blocks of most inte- agation characteristics of single-mode rectangular wavegrated optical devices; hence, a knowledge of their prop- guides and show that it is extremely accurate in the pracagation characteristics is important for the design of such tical region of s ...
... cross sections are the building blocks of most inte- agation characteristics of single-mode rectangular wavegrated optical devices; hence, a knowledge of their prop- guides and show that it is extremely accurate in the pracagation characteristics is important for the design of such tical region of s ...
Various Indoor OFDM Optical Wireless Communication Systems and
... Abstract— In this paper, the performance of indoor OFDM(Orthogonal Frequency Division Multiplexing) optical wireless communication systems in the presence of LED clipping distortions is analysed. The Orthogonal frequency division multiplexing (OFDM) is used in many wired and wireless broadband commu ...
... Abstract— In this paper, the performance of indoor OFDM(Orthogonal Frequency Division Multiplexing) optical wireless communication systems in the presence of LED clipping distortions is analysed. The Orthogonal frequency division multiplexing (OFDM) is used in many wired and wireless broadband commu ...
Effect of input pulse chirp on nonlinear energy deposition and
... 10 cm of water as a function of the input pulse width at λ0 800 nm. Numerical data in circles and diamonds show results obtained when full Keldysh ionization plus quadratic (dashed) or linear (dotted–dashed) electron-ion recombination are introduced in Eqs. (1)–(3). The solid vertical line marks t ...
... 10 cm of water as a function of the input pulse width at λ0 800 nm. Numerical data in circles and diamonds show results obtained when full Keldysh ionization plus quadratic (dashed) or linear (dotted–dashed) electron-ion recombination are introduced in Eqs. (1)–(3). The solid vertical line marks t ...
(k) and Refractive Index
... but also the angle of incidence and polarization of the incident light. If the incident angle of the light is altered, the internal angles and optical path lengths within each layer will be affected, which also will influence the amount of phase change in the reflected beams. It is convenient to des ...
... but also the angle of incidence and polarization of the incident light. If the incident angle of the light is altered, the internal angles and optical path lengths within each layer will be affected, which also will influence the amount of phase change in the reflected beams. It is convenient to des ...
Non-Magneto-Optic Waveguide Isolator Namkhun Srisanit , Non-member
... Linearly polarized light traveling with the field will find its polarization direction rotated as a right-hand screw, while light traveling against the field is rotated in the opposite direction. This rotation is similar to that experienced in optically active crystals with one important difference: the ...
... Linearly polarized light traveling with the field will find its polarization direction rotated as a right-hand screw, while light traveling against the field is rotated in the opposite direction. This rotation is similar to that experienced in optically active crystals with one important difference: the ...
FABRY PEROT RESONATOR
... Fabry Perot Interferometers At first it seems astonishing that at the point of resonance where the mirror distances of the Fabry Perot are just about a multiple of half the wavelength, the transmission is 1, as if there were no mirrors there at all. Let us take, for example, a simple helium-neon las ...
... Fabry Perot Interferometers At first it seems astonishing that at the point of resonance where the mirror distances of the Fabry Perot are just about a multiple of half the wavelength, the transmission is 1, as if there were no mirrors there at all. Let us take, for example, a simple helium-neon las ...
Optical phase conjugation: principles, techniques, and applications
... from optical elements and propagating media. The first impossibility was removed after the advent of laser oscillators and amplifiers. The second restraint could also be released by utilizing the OPC technique. In general, a pair of optical waves are phase conjugated to each other if their complex amp ...
... from optical elements and propagating media. The first impossibility was removed after the advent of laser oscillators and amplifiers. The second restraint could also be released by utilizing the OPC technique. In general, a pair of optical waves are phase conjugated to each other if their complex amp ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.