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Modal dispersion

About: Modal dispersion is a(n) research topic. Over the lifetime, 2695 publication(s) have been published within this topic receiving 50115 citation(s). more


Journal ArticleDOI: 10.1063/1.1654836
Abstract: Theoretical calculations supported by numerical simulations show that utilization of the nonlinear dependence of the index of refraction on intensity makes possible the transmission of picosecond optical pulses without distortion in dielectric fiber waveguides with group velocity dispersion. In the case of anomalous dispersion (∂2ω/∂k2>0) discussed here [the case of normal dispersion (∂2ω/∂k2<0) will be discussed in a succeeding letter], the stationary pulse is a ``bright'' pulse, or envelope soliton. For a typical glass fiber guide, the balancing power required to produce a stationary 1‐ps pulse is approximately 1 W. Numerical simulations show that above a certain threshold power level such pulses are stable under the influence of small perturbations, large perturbations, white noise, or absorption. more

Topics: Dispersion (optics) (66%), Bandwidth-limited pulse (65%), Modal dispersion (62%) more

2,282 Citations

Journal ArticleDOI: 10.1109/68.853507
Abstract: We describe the measured group-velocity dispersion characteristics of several air-silica photonic crystal fibers with anomalous group-velocity dispersion at visible and near-infrared wavelengths. The values measured over a broad spectral range are compared to those predicted for an isolated strand of silica surrounded by air. We demonstrate a strictly single-mode fiber which has zero dispersion at a wavelength of 700 mm. These fibers are significant for the generation of solitons and supercontinua using ultrashort pulse sources. more

Topics: Zero-dispersion wavelength (70%), Dispersion (optics) (64%), Dispersion-shifted fiber (63%) more

672 Citations

Open accessJournal ArticleDOI: 10.1364/OE.11.000843
21 Apr 2003-Optics Express
Abstract: In order to control dispersion and dispersion slope of indexguiding photonic crystal fibers (PCFs), a new controlling technique of chromatic dispersion in PCF is reported. Moreover, our technique is applied to design PCF with both ultra-low dispersion and ultra-flattened dispersion in wide wavelength range. A full-vector finite element method with anisotropic perfectly matched layers is used to analyze the dispersion properties and the confinement losses in a PCF with finite number of air holes. It is shown from numerical results that it is possible to design a fourring PCF with flattened dispersion of 0 +/- 0.5 ps/(km.nm) from 1.19 m to 1.69 m wavelength range and a five-ring PCF with flattened dispersion of 0 +/- 0.4 ps/(km.nm) from 1.23 m to 1.72 m wavelength range. more

Topics: Dispersion (optics) (66%), Zero-dispersion wavelength (64%), Modal dispersion (63%) more

628 Citations

Journal ArticleDOI: 10.1109/50.482256
Ping Kong Alexander Wai1, C.R. Menyak2Institutions (2)
Abstract: Polarization mode dispersion and the polarization decorrelation and diffusion lengths are calculated in fibers with randomly varying birefringence. Two different physical models in which the birefringence orientation varies arbitrarily are studied and are shown to yield nearly identical results. These models are appropriate for communication fibers. We show that both the length scales for polarization mode dispersion and polarization decorrelation measured with respect to the local axes of birefringence are equal to the fiber autocorrelation length. We also show that the coupled nonlinear Schrodinger equation which describes wave evolution over long length along a communication fiber can be reduced to the Manakov equation. The appropriate averaging length for the linear polarization mode dispersion is just the fiber autocorrelation length but the appropriate averaging length for the nonlinear terms is the diffusion length in the azimuthal direction along the Poincare sphere which can be different, The implications for the nonlinear evolution are discussed. more

423 Citations

Journal ArticleDOI: 10.1364/AO.23.004486
James William Fleming1Institutions (1)
15 Dec 1984-Applied Optics
Abstract: Germania glass was prepared from high purity GeO2 powder. Refractive-index dispersion was used to calculate material dispersion and to provide a model for representing the dispersion of GeO2–SiO2 glasses. The wavelength of zero material dispersion is found to be in agreement with theoretical calculations. Modal propagation is modeled for a GeO2 core–silica clad fiber. Results support compositional dependence of profile dispersion in GeO2–SiO2 fibers. more

Topics: Dispersion (optics) (67%), Modal dispersion (66%), Zero-dispersion wavelength (65%) more

399 Citations

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Topic's top 5 most impactful authors

Joseph M. Kahn

24 papers, 966 citations

Mark Shtaif

17 papers, 602 citations

Sant Prasad Ojha

12 papers, 88 citations

Ming-Jun Li

10 papers, 99 citations

Alan E. Willner

10 papers, 183 citations

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