Tunable properties of light propagation in photonic liquid crystal fibers
... source of radiating fields. In current implementations for circular inclusions, the method achieves high accuracy and rapid convergence, with modest computational resources. Systems with large numbers of inclusions can be modelled, and for structures with discrete rotational symmetries the computati ...
... source of radiating fields. In current implementations for circular inclusions, the method achieves high accuracy and rapid convergence, with modest computational resources. Systems with large numbers of inclusions can be modelled, and for structures with discrete rotational symmetries the computati ...
Activities and Findings - LIGO
... recycling. This configuration allows a modification in the frequency response of the interferometer and offers the possibility of a tailored response for a targeted source. The increase in the complexity of the interferometer, both in terms of the optical and controls systems, is significant, and ha ...
... recycling. This configuration allows a modification in the frequency response of the interferometer and offers the possibility of a tailored response for a targeted source. The increase in the complexity of the interferometer, both in terms of the optical and controls systems, is significant, and ha ...
Effective Science and Engineering Communication
... Discussion and Conclusion (Cont’d) From the experiments, we have found that the optical system used has several advantages and constraints. The advantages include single-step process and flexibility in the selection of lasers and recording media for various photonic crystals. Since the optical syst ...
... Discussion and Conclusion (Cont’d) From the experiments, we have found that the optical system used has several advantages and constraints. The advantages include single-step process and flexibility in the selection of lasers and recording media for various photonic crystals. Since the optical syst ...
Determination of the dihedral angle errors of a corner cube from its
... reflections," J. Opt. Soc. Am. 62, 727 (A) (1972).: used the pattern data to compute the relative sign and magnitude of all three dihedral angle errors. Thomas and Wyant A. Thomas and J. C. Wyant, "Determination of the dihedral angle errors of a corner cube from its Twyman-Green interferogram," J. O ...
... reflections," J. Opt. Soc. Am. 62, 727 (A) (1972).: used the pattern data to compute the relative sign and magnitude of all three dihedral angle errors. Thomas and Wyant A. Thomas and J. C. Wyant, "Determination of the dihedral angle errors of a corner cube from its Twyman-Green interferogram," J. O ...
Confinement Factors And Gain In Optical Amplifiers
... study this, a so-called modal analysis of the device is needed. In recent papers, the authors have investigated guided modes in planar dielectric waveguides with gain and losses [4]–[7]. In semiconductor TWA’s, the material gain in the active region due to carrier injection introduces an additional ...
... study this, a so-called modal analysis of the device is needed. In recent papers, the authors have investigated guided modes in planar dielectric waveguides with gain and losses [4]–[7]. In semiconductor TWA’s, the material gain in the active region due to carrier injection introduces an additional ...
Light beams with fractional orbital angular
... Here, Φ(x, y)beam is the phase profile of the superposition at the beam waist for z = 0 and Φ(x, Λ)grating is the phase profile of the blazed grating which depends on the period of the grating Λ. The two phase distributions are added modulo 2π and, after subtraction of π , multiplied by an intensity ...
... Here, Φ(x, y)beam is the phase profile of the superposition at the beam waist for z = 0 and Φ(x, Λ)grating is the phase profile of the blazed grating which depends on the period of the grating Λ. The two phase distributions are added modulo 2π and, after subtraction of π , multiplied by an intensity ...
NONLINEAR SCATTERING EFFECTS IN OPTICAL FIBERS
... scattering of a photon to a lower energy photon. The energy difference is absorbed by the molecular vibrations or phonons in the medium. In other words one can state that the energy of a light wave is transferred to another wave, which is at a higher wavelength (lower energy) such that energy differen ...
... scattering of a photon to a lower energy photon. The energy difference is absorbed by the molecular vibrations or phonons in the medium. In other words one can state that the energy of a light wave is transferred to another wave, which is at a higher wavelength (lower energy) such that energy differen ...
UNIT-4 OCN
... • Therefore, calculations of numerical aperture from refractive index data are likely to be less accurate for graded index fibers than for step index fibers unless the complete refractive index profile is considered. • However, if refractive index data is available on either fiber type from the mea ...
... • Therefore, calculations of numerical aperture from refractive index data are likely to be less accurate for graded index fibers than for step index fibers unless the complete refractive index profile is considered. • However, if refractive index data is available on either fiber type from the mea ...
CHAPTER 4 Fiber optic III: attenuation and dispersion
... mode dispersion (PMD): caused by non-symmetry or inhomogeneities of the fibre. The result is that the propagation constant for different polarizations is also different. Typically the dispersion caused by PMD is less than a fraction of a picosecond per kilometre. (but scales with L2). ...
... mode dispersion (PMD): caused by non-symmetry or inhomogeneities of the fibre. The result is that the propagation constant for different polarizations is also different. Typically the dispersion caused by PMD is less than a fraction of a picosecond per kilometre. (but scales with L2). ...
Refractive index dispersion and related properties in fluorine doped
... The refractive index dispersion has been measured on bulk samples of commercial fluorine doped silica glasses, which were prepared by a plasma torch in the same way the glasses are for use in certain optical waveguides.1 2 Fluorine doping lowers the refractive index of fused silica and, therefore, i ...
... The refractive index dispersion has been measured on bulk samples of commercial fluorine doped silica glasses, which were prepared by a plasma torch in the same way the glasses are for use in certain optical waveguides.1 2 Fluorine doping lowers the refractive index of fused silica and, therefore, i ...
Plasmonic Metamaterials
... Engineering the dispersion of SPPs provides an alternative approach to realize negative refraction and NIMs. For instance, there are two bound-SPP modes in a two-dimensional metaldielectric-metal (MDM) slab waveguide, which originate from the coupling and hybridization of the SPP mode at each indiv ...
... Engineering the dispersion of SPPs provides an alternative approach to realize negative refraction and NIMs. For instance, there are two bound-SPP modes in a two-dimensional metaldielectric-metal (MDM) slab waveguide, which originate from the coupling and hybridization of the SPP mode at each indiv ...
Synthesis, Growth and characterization of L-Histidine
... Corresponding author: [email protected] ...
... Corresponding author: [email protected] ...
Creation of gap solitons in Bose
... their general properties were discussed in [5], and Ref. [2] worked out their analogy to the Josephson effect. Complementary and previous to this work, the formation of atomic solitons was also examined theoretically in the context of nonlinear atom optics [6–11]. In these studies the interaction be ...
... their general properties were discussed in [5], and Ref. [2] worked out their analogy to the Josephson effect. Complementary and previous to this work, the formation of atomic solitons was also examined theoretically in the context of nonlinear atom optics [6–11]. In these studies the interaction be ...
Counterpropagating optical beams and solitons
... observations, showing that when taking into account transverse extent of the interacting beams, an even more complex behavior can emerge, including oscillatory transverse instabilities [11, 12] and pattern formation [13–15] that require neither cavity nor finite response time. Sometimes, these instab ...
... observations, showing that when taking into account transverse extent of the interacting beams, an even more complex behavior can emerge, including oscillatory transverse instabilities [11, 12] and pattern formation [13–15] that require neither cavity nor finite response time. Sometimes, these instab ...
Fourier Decomposition Analysis af Anisotropic Inhomogeneous
... More recently, Hewlett and Ladoucer improved this method by introducing a preliminary mapping of the infinite transverse plane onto a unit square by applying a suitable analytic transformation function [16]. This modification allows computation of even near-to-cutoff modes by using relatively few wa ...
... More recently, Hewlett and Ladoucer improved this method by introducing a preliminary mapping of the infinite transverse plane onto a unit square by applying a suitable analytic transformation function [16]. This modification allows computation of even near-to-cutoff modes by using relatively few wa ...
Digital holography of total internal reflection
... In digital holography [1], the holographic interference pattern is optically generated by the superposition of object and reference waves. But, instead of a photographic plate, the hologram is digitally sampled by a CCD camera and transferred to a computer as an array of numbers. The propagation of ...
... In digital holography [1], the holographic interference pattern is optically generated by the superposition of object and reference waves. But, instead of a photographic plate, the hologram is digitally sampled by a CCD camera and transferred to a computer as an array of numbers. The propagation of ...
ptical Short Course International
... effective focal length this class of lens is called a retro focus or inverse telephoto lens type. This class of lens is required with most digital projectors because of the large magnification of the modulator panel. The high magnification in a short projection distance drives the lens to also have ...
... effective focal length this class of lens is called a retro focus or inverse telephoto lens type. This class of lens is required with most digital projectors because of the large magnification of the modulator panel. The high magnification in a short projection distance drives the lens to also have ...
www.phlam.univ
... then be used and the pulses can be compressed without wings. Regardless of pulse distortion due to spectral and gain saturation of the amplifier, the pulse was compressed after amplification, indicating that the pulse remains linearly chirped. The pulsewidth of the amplified compressed pulses was me ...
... then be used and the pulses can be compressed without wings. Regardless of pulse distortion due to spectral and gain saturation of the amplifier, the pulse was compressed after amplification, indicating that the pulse remains linearly chirped. The pulsewidth of the amplified compressed pulses was me ...
Production of photonic nanojets by using pupil
... normalised inner circular masks [17]. Annular pupil plane filter was also employed to tune the imaging properties for confocal microscopies [18]. Nonetheless, near-field optics is more complicated due to the influence of the evanescent wave and thus no simplified formulations can be used. The idea t ...
... normalised inner circular masks [17]. Annular pupil plane filter was also employed to tune the imaging properties for confocal microscopies [18]. Nonetheless, near-field optics is more complicated due to the influence of the evanescent wave and thus no simplified formulations can be used. The idea t ...
Picosecond resolution soft x-ray laser plasma
... to be observed at the output of the DGI. However the first diffracted order off the second grating can be used instead for this purpose. In this case the intensity of both orders is similar, because each undergoes a reflection (zero order) and a first order diffraction. As the optimum alignment can ...
... to be observed at the output of the DGI. However the first diffracted order off the second grating can be used instead for this purpose. In this case the intensity of both orders is similar, because each undergoes a reflection (zero order) and a first order diffraction. As the optimum alignment can ...
Second-harmonic generation of focused ultrashort
... in order to be observed. Since far above resonances, nonlinearities decrease with frequency, and since highly brilliant sources in the x-ray portion of the electromagnetic spectrum have been absent until very recently, experimental observations of nonlinear phenomena, such as second-harmonic generat ...
... in order to be observed. Since far above resonances, nonlinearities decrease with frequency, and since highly brilliant sources in the x-ray portion of the electromagnetic spectrum have been absent until very recently, experimental observations of nonlinear phenomena, such as second-harmonic generat ...
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.