Genetic‐algorithm and finite‐element approach to the synthesis of dispersion‐flattened fiber

Correia, D.; Rodríguez-Esquerre, V. F.; Hernández-Figueroa, H.E.

doi:10.1002/mop.10000

Cited by 16 publications

(13 citation statements)

References 10 publications

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“…Simulations for a range of different refractive index profiles were carried out to test the accuracy and validity of the method. Several examples that have been considered previously in [2,3,6,7,16,18] were used for validation. The analysis of the convergence of the proposed method and comparison of its accuracy with that of other methods is given in Subsection 3.2.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…The optimized parameters for this fiber are: ∆ 1 = 0.56%, ∆ 2 = 0.17%, ∆ 3 = 0.40%, R 1 = 4.106 µm, R 2 = 8.133 µm and R 3 = 14.60 µm. We calculated the dispersion curve that one would obtain using these parameter values and obtained the dashed dark green curve shown in Figure 3(a) which is indistinguishable from the curve plotted in Figure 4 of [18].…”

Section: Dispersion Graphsmentioning

confidence: 99%

“…The dispersion values were recalculated for slightly changing F from 0.97 to 1.03 using the proposed Figure 3. (a) Dispersion curves for triple-clad fibers with undoped core and fluorine-doped claddings designed in [16] (in light green color) and [18] (dashed dark green curve); (b) schematic refractive index profile of the triple-clad fiber from [16]; (c) dispersion curves for the triple-clad fiber for different scale factor, F .…”

Section: Dispersion Graphsmentioning

confidence: 99%

“…d) Based on this example, further optimization was considered in [18] to achieve a more flattened dispersion curve. The optimized parameters for this fiber are: ∆ 1 = 0.56%, ∆ 2 = 0.17%, ∆ 3 = 0.40%, R 1 = 4.106 µm, R 2 = 8.133 µm and R 3 = 14.60 µm.…”

Section: Dispersion Graphsmentioning

confidence: 99%

See 3 more Smart Citations

A Rapid Accurate Technique to Calculate the Group Delay, Dispersion and Dispersion Slope of Arbitrary Radial Refractive Index Profile Weakly-Guiding Optical Fibers

Mussina¹,

Selviah²,

Fernández³

et al. 2014

PIER

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Abstract-This paper introduces a new numerical method to calculate the group delay, chromatic dispersion and dispersion slope of weakly-guiding optical fibers with arbitrary radial refractive index profiles. It is based on the analytical differentiation of the propagation coefficient up to the third order. The simulation results are compared to experimental data, with those calculated by other approaches and exact data where possible. Due to the analytical differentiation of the matrix equation, the method is more accurate compared to other approaches, it is also much faster than numerical differentiation as allows avoiding repeated solution of the eigenvalue problem to calculate the derivatives of the propagation coefficient. The precision of the method is limited only by the approximation errors of the mode solver. The Galerkin method with Laguerre-Gauss basis functions is used to determine the propagation coefficients of weakly-guiding structures. The new method enables fiber manufacturers to rapidly design dispersion characteristics of graded index, step index, single-and multiple-clad fibers, as well as few-mode and bend insensitive fibers.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Dispersion Graphsmentioning

confidence: 99%

Section: Dispersion Graphsmentioning

confidence: 99%

Section: Dispersion Graphsmentioning

confidence: 99%

See 2 more Smart Citations

A Rapid Accurate Technique to Calculate the Group Delay, Dispersion and Dispersion Slope of Arbitrary Radial Refractive Index Profile Weakly-Guiding Optical Fibers

Mussina¹,

Selviah²,

Fernández³

et al. 2014

PIER

View full text Add to dashboard Cite

show abstract

“…Recently, photonic crystal fibers (PCF) have been designed to provide microstructures with several profiles of chromatic dispersion, including some based on photonic crystals with very low chromatic dispersion for several wavelengths [4]- [5] and other with negative chromatic dispersion [6] - [11].…”

Section: Introductionmentioning

confidence: 99%

Photonic crystal fiber design with Ge-doped core for residual chromatic dispersion compensation

Silva

Bezerra

Fonseca

et al. 2009

2009 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

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In this paper, a special photonic crystal fiber (PC F), which may be used in a WDM optical fiber transmission system for residual chromatic dispersion compensation, is designed and analyzed. The proposed structure is obtained by introducing a small Ge-doped core at the center of a conventional photonic crystal fiber . The behavior of the resulting geometry has been analyzed by an efficient vectorial finite element formulation with perfectly matched layer (PMLs). Numerical results show that the designed PCF presents flattened negative dispersion over E +S + C + L + U wavelength bands with an average dispersion near to -203 ps.kmLnm' '.

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Step index holey fiber design by genetic algorithm for chromatic dispersion compensation

Silva

Bezerra

Hernández-Figueroa

2011

Micro & Optical Tech Letters

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10-20 lm; whereas in the dielectric quasi-TEM mode, the field penetrates through the Si substrate. In the slow-wave mode, the electric field extends all the way down to the substrate but orders of magnitude smaller than in the SiO2 layer. This implies that less electrical energy penetrates into silicon. In our numerical simulation, we show that in the skin-effect mode, the electric field in the metal layer is concentrated close to the Al-SiO2 interface with a skin depth of less than 1 lm for our case. In the other two modes, the electric field is distributed more evenly in the metal layer. REFERENCES 1. H. Hasegawa, M. Furukawa, and H. Yanai, Properties of microstrip line on Si-SiO2 system, IEEE Trans Microwave Theory Tech MTT-19 (1971), 869-881. 2. T. Shibata and E. Sano, Characterization of MIS structure coplanar transmission lines for investigation of signal propagation in integrated circuits, IEEE Trans Microwave Theory Tech 38 (1990),ABSTRACT: A new approach to obtain ultra-flattened-chromaticdispersion-optical-fibers by introducing a small airhole at the core of a conventional step-index-optical-fiber is presented. The proposed structure exhibits a simple geometry and has been analyzed through a vectorial finite element method in conjunction with genetic algorithm. The structure parameters are optimized using genetic algorithm to obtain ultra wideband residual dispersion compensation. Numerical results show that the optimized model exhibits flattened negative dispersion over E þ S þ C þ L þ U wavelength bands with an average dispersion of À253 ps km À1 nm À1

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Genetic‐algorithm and finite‐element approach to the synthesis of dispersion‐flattened fiber

Cited by 16 publications

References 10 publications

A Rapid Accurate Technique to Calculate the Group Delay, Dispersion and Dispersion Slope of Arbitrary Radial Refractive Index Profile Weakly-Guiding Optical Fibers

A Rapid Accurate Technique to Calculate the Group Delay, Dispersion and Dispersion Slope of Arbitrary Radial Refractive Index Profile Weakly-Guiding Optical Fibers

Photonic crystal fiber design with Ge-doped core for residual chromatic dispersion compensation

Step index holey fiber design by genetic algorithm for chromatic dispersion compensation

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