The eigenvalue problem for guided modes of an integrated optical guide is reduced to a strongly-singular domain integral equation. It is proved that the operator of the domain integral equation is a Fredholm operator ...
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The eigenvalue problem for guided modes of an integrated optical guide is reduced to a strongly-singular domain integral equation. It is proved that the operator of the domain integral equation is a Fredholm operator with zero index. It is also proved that the spectrum of the original problem can only be a set of isolated points.
In this work we want to address a computer-intensive approach for the uncertainty estimation in a measurement process. A multivariate model is considered and the level of confidence of a probability region, associated...
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Bragg gratings fabricated on top of ion exchanged glass waveguides using PECVD-deposited silicon overlays are reported. The resulting Bragg gratings are characterized and transmission dips at 1536 nm in excess of 18 d...
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We introduce a numerical approach to perform the effective(coarse-scale) bifurcation analysis of solutions of dissipative evolution equations with spatially varying coefficients.The advantage of this approach is that ...
We introduce a numerical approach to perform the effective
(coarse-scale) bifurcation analysis of solutions of dissipative
evolution equations with spatially varying coefficients.
The advantage of this approach is that the `coarse model' (the averaged,
effective equation) need not be explicitly constructed.
The method only uses a time-integrator code for the detailed problem and
judicious choices of initial data and integration times; the
bifurcation computations are based on the so-called recursive projection
method (Shroff and Keller 1993 SIAM J. Numer. Anal.30 1099-120).
Nonminimum phase tracking control is studied for boost and buck-boost power converters. A sliding mode control algorithm is developed to directly track a causal voltage tracking profile given by an exogenous system. T...
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Nonminimum phase tracking control is studied for boost and buck-boost power converters. A sliding mode control algorithm is developed to directly track a causal voltage tracking profile given by an exogenous system. The approximate causal output nonminimum phase tracking in nonlinear boost and buck-boost power converters is addressed asymptotically via sliding mode control using a dynamic sliding manifold (DSM). Use of DSM allows the stabilization of the internal dynamics when the output tracking error tends asymptotically to zero in the sliding mode. The sliding mode controller with DSM links features of conventional sliding mode control (insensitivity to matched nonlinearities and disturbances) and a conventional dynamic compensator (accommodation to unmatched disturbances). Numerical examples demonstrate the effectiveness of the sliding mode controller.
The confidence region and the related confidence level are the bases for the uncertainty expression in a measurement process. In this work a multivariate model is considered and different situations with respect the p...
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The confidence region and the related confidence level are the bases for the uncertainty expression in a measurement process. In this work a multivariate model is considered and different situations with respect the parameters constituting the model are examined. Computational results are reported and analysed to asses the validity of the proposed approach.
Novel design method for digital equiripple FIR double notch filters for processing of DTMF signals is presented. The filters are based on the differential equation of a corresponding pseudoamplitude. The design method...
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ISBN:
(纸本)7505377027
Novel design method for digital equiripple FIR double notch filters for processing of DTMF signals is presented. The filters are based on the differential equation of a corresponding pseudoamplitude. The design method is very suitable for the design of FIR filters for the detection/rejection of DTMF signals. The performance of digital IIR and FIR double stopband notch filters is compared.
Thin cylindrical tethers are common lipid bilayer membrane structures, arising in situations ranging from micromanipulation experiments on artificial vesicles to the dynamic structure of the Golgi apparatus. We study ...
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Thin cylindrical tethers are common lipid bilayer membrane structures, arising in situations ranging from micromanipulation experiments on artificial vesicles to the dynamic structure of the Golgi apparatus. We study the shape and formation of a tether in terms of the classical soap-film problem, which is applied to the case of a membrane disk under tension subject to a point force. A tether forms from the elastic boundary layer near the point of application of the force, for sufficiently large displacement. Analytic results for various aspects of the membrane shape are given.
Summary form only given. We report on the application of linearization to calculate the eye diagrams and bit error rate in a single-channel chirped return-to-zero (CRZ) system propagating over 6,100 km. We focused on ...
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Summary form only given. We report on the application of linearization to calculate the eye diagrams and bit error rate in a single-channel chirped return-to-zero (CRZ) system propagating over 6,100 km. We focused on this system because it is well characterized in simulations, and it is similar to a single one of the channels in some commercial WDM submarine systems.
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