Accurate analysis of multimode interference devices

Author

Rahman, B.M.A. ; Rajarajan, M. ; Wongcharoen, T. ; Grattan, K.T.V.

Author_Institution

Dept. of Electr., Electron. & Inf. Eng., City Univ., London, UK

Volume

8

Issue

6

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

809

Lastpage

811

Abstract

The accurate analysis of multimode interference devices is demonstrated by using the least-squares boundary residual (LSBR) method. Accurate modal propagation constants and spatial field profiles in the multimode interference (MMI) section can be obtained by using the finite-element method. The accurate calculation of the excited modal coefficients is achieved by using the LSBR, which satisfies the continuity of the transverse field components more rigorously than the simple overlap integrals.

Keywords

boundary-value problems; finite element analysis; least squares approximations; light interference; optical waveguide theory; accurate analysis; accurate modal propagation constants; excited modal coefficients; finite-element method; least-squares boundary residual method; multimode interference devices; multimode interference section; simple overlap integrals; spatial field profiles; transverse field component continuity; Couplers; Finite element methods; Interference; Optical devices; Optical interferometry; Optical polarization; Optical propagation; Optical signal processing; Optical waveguides; Planar waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.502102

Filename

502102