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We investigate nonlinear one- and two-dimensional photonic crystals by applying a finite element-iterative method. Numerical results show the essential influence of nonlinear elements embedded into a quarter-wave stack and the sharp photonic crystal waveguide bend on the spectral characteristics of these structures. We compare our results with those obtained in [21] from the discrete equation method...
Both radiative and nonradiative processes which occur in the active region of GaInAs–GaInAsP–InP asymmetric multiple quantum-well (AMQW) heterolasers with two quantum wells of different width (4 and 9nm) are described. Several possible processes of non-radiative Auger recombination which affect the temperature sensitivity of the lasing threshold are analyzed and the temperature dependencies of the...
The effect of the anisotropy of the valence band on the gain spectra of quantum wells is studied in the frame of kp-theory and envelope function approximation. In this paper shown that the application of axial approximation leads to understated gain. The maximum errors of gain spectra are located in the same points as peaks of gain spectrum at energy axis. Such errors can amount to 18,8% that makes...
In our work we propose the method of the synthesis of the wideband wavelength filters on the basis of two-dimensional photonic crystal for optical band. Using this method the wavelength diplexer has been synthesized. The device characteristics were obtained and the method efficiency were proved
In the paper, the methodology of asymmetric multiple quantum well separate confinement heterostructures (AMQW-SCH) modification in respect to the efficient of electron capture process is discussed. The proposed methodology allows to hold the position of working levels. The modification consists of following operations: a) changing an order of operating QWs, b) varying of barriers between non-identical...
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