ANALYSIS OF NONRECIPROCAL PHASE SHIFTERS FOR INTEGRATED-OPTICS BY THE GALERKIN METHOD

Autor(en): SHAMONIN, M
HERTEL, P
Stichwörter: DEVICES; FINITE-ELEMENT ANALYSIS; GALERKIN METHOD; GUIDES; INTEGRATED OPTICAL ISOLATORS; MAGNETIC GARNET-FILMS; NONRECIPROCAL PHASE SHIFTERS; Optics; PROPAGATION; SCALAR WAVE-EQUATION; WAVEGUIDES
Erscheinungsdatum: 1995
Herausgeber: SOC PHOTO-OPT INSTRUM ENG
Journal: OPTICAL ENGINEERING
Volumen: 34
Ausgabe: 3
Startseite: 849
Seitenende: 852
Zusammenfassung: 
We compute the guided modes of a gyrotropic rib waveguide in the semivectorial approximation. The principal component of the magnetic field is expanded into a two-dimensional Fourier series on a rectangular computational window. The expansion coefficients are determined by the Galerkin method, giving rise to a generalized eigenvalue problem with symmetric matrices, typically of rank 300. The method is easy to implement, is reasonably fast, and compares well with the finite-difference or spectral-index method. The quasi-TM mode equation is the condition of stationarity for a bilinear functional. The latter allows one to derive an expression for the differential nonreciprocal phase shift as a first-order perturbation.
ISSN: 00913286
DOI: 10.1117/12.190428

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