696 research outputs found
Caratteristiche e struttura dei ricevitori per radiodiffusione televisiva diretta da satellite nella banda dei 12 GHz
No full textInverse scattering for optical couplers. Exact solution of Marchenko equations
No full textAn exact solution of Marchenko equations for rational scattering data of arbitrary order is developed, with reference to the case of two coupled waves propagating in a lossless (optical) waveguide. Some numerical examples are presented for the synthesis of coupling structures having a prescribed frequency response
Simple Model for Semiconductor Laser End Facet Reflectivity
No full textThe mode reflectivity of narrow stripe double heterostructure semiconductor laser is evaluated using a simplified approach. It is based on a mode matching technique in the Fourier Transform domain for a suitable equivalent structure. The method allows to compute the reflectivity by the evaluation of an integral in the spectral domain and to obtain a closed form anlytical expression for the radiation patter
Structural Design Criteria for Polarization Insensitive Semiconductor Optical Amplifiers
No full textFast Exact Inversion of the Generalized Zakharov-Shabat Problem for Rational Scattering Data: Application to the Synthesis of Optical Couplers
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