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  • 1
    Digitale Medien
    Digitale Medien
    An FD-BPM with adaptive mesh for longitudinally varying optical structures (1995)
    Springer
    Optical and quantum electronics 27 (1995), S. 951-959 
    Details
    ISSN: 1572-817X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik
    Notizen: Abstract A finite difference beam propagation method (FD-BPM) algorithm using an adaptive mesh is proposed for optimal use of computer memory and minimization of CPU times in three-dimensional longitudinally varying guiding structures. Preliminary results confirming its feasibility and the advantages of the new algorithm both in CPU and computer memory requirements are described in a 2D case using a Y-junction.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00558487
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  • 2
    Digitale Medien
    Digitale Medien
    FDTD modelling of spatial soliton propagation (1997)
    Springer
    Optical and quantum electronics 29 (1997), S. 233-241 
    Details
    ISSN: 1572-817X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik
    Notizen: Abstract The finite difference time domain method is used as a tool to model non-linear optical devices. Following this approach, Maxwell's equations are directly integrated in the time domain, avoiding any mathematical approximation. As an example, spatial soliton propagation and interaction will be modelled by the FDTD technique. Some new results will be discussed, to highlight the envisaged breakthroughs allowed by the method.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1018510323541
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  • 3
    Digitale Medien
    Digitale Medien
    TBC and PML conditions for 2D and 3D BPM: a comparison (1998)
    Springer
    Optical and quantum electronics 30 (1998), S. 443-456 
    Details
    ISSN: 1572-817X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik
    Notizen: Abstract Any implementation of the beam propagation method, when used to analyse open problems, requires a procedure allowing radiation to leave the computational window. In this paper we present the results of a case study on the effectiveness of the classical Hadley's Transparent Boundary Conditions (TBC) and the Perfectly Matched Layer (PML) to handle strong radiation at the boundaries. A polished fibre coupler will be studied both in 2D and in 3D configurations using, in the former case, a scalar method and, in the latter, a full vectorial approach. Numerical results show that simple TBC can be used in 2D simulations also when high radiation occurs but they easily fail in 3D structures. Therefore, in these cases, the more complicated PML conditions should be preferred.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1006966230354
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