Geodesic
About asymptotic approximations in thin waveguides
ESAIM: Mathematical Modelling and Numerical Analysis , Tome 39 (2005) no. 6, pp. 1271-1284

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We study the propagation of electromagnetic waves in a guide the section of which is a thin annulus. Owing to the presence of a small parameter, explicit approximations of the TM and TE eigenmodes are obtained. The cases of smooth and non smooth boundaries are presented.

DOI : 10.1051/m2an:2005045
Classification : 35P15, 74J05
Keywords: closed thin waveguides, asymptotic approximations 
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     author = {Turbe, Nicole and Ratier, Louis},
     title = {About asymptotic approximations in thin waveguides},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {1271--1284},
     publisher = {EDP-Sciences},
     volume = {39},
     number = {6},
     year = {2005},
     doi = {10.1051/m2an:2005045},
     mrnumber = {2195912},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/m2an:2005045/}
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Turbe, Nicole; Ratier, Louis. About asymptotic approximations in thin waveguides. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 39 (2005) no. 6, pp. 1271-1284. doi: 10.1051/m2an:2005045

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