التفاصيل البيبلوغرافية
| العنوان: |
LAYER STRIPPING APPROACH TO RECONSTRUCT SHAPE VARIATIONS IN WAVEGUIDES USING LOCALLY RESONANT FREQUENCIES. |
| المؤلفون: |
NICLAS, ANGÉLE1 angele.niclas@math.cnrs.fr, SEPPECHER, LAURENT2 laurent.seppecher@ec-lyon.fr |
| المصدر: |
SIAM Journal on Applied Mathematics. 2024, Vol. 84 Issue 1, p75-96. 22p. |
| مصطلحات موضوعية: |
*HELMHOLTZ equation, *PLANAR waveguides, *INVERSE problems, *WAVEGUIDES |
| مستخلص: |
This article presents a new method to reconstruct slowly varying width defects in two-dimensional waveguides using one-side section measurements at locally resonant frequencies. At these frequencies, locally resonant modes propagate in the waveguide up to a "cut-off"" position. In this particular point, the local width of the waveguide can be recovered. Given multifrequency data measured on a section of the waveguide, we perform an efficient layer stripping approach to recover, section by section, the shape variations. It provides an L infinity-stable method to reconstruct the width of a slowly monotonous varying waveguide. We validate this method on numerical data and discuss its limits. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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