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- W2044194572 abstract "In this paper two dimensional coupled mode theory is presented. Analyzing the modal behavior, coupling coefficients for various systems could be obtained. It is a natural extension of one dimensional coupled mode theory discussed vastly in the last two decades. A general theory for gain coupling devices, and grating assisted co-directional coupler is presented in this paper. The reason that this theory has not been implemented so far is that, the coupled mode profiles can not be obtained easily. We propose an approximate method based on the Green function for Helmholtz equation for perfect guide. The approximate approach is based on the azimuthal effective index method. This is a good approximation in the weak guidance regime. Coupling coefficients can be obtained from the coupled mode profiles in the grating region in a manner similar to conventional one dimensional theory approach. Numerical results are presented for single dielectric waveguides with periodic corrugations. The theory can also analyze grating-assisted directional couplers, and gain coupled distributed feedback lasers. Furthermore, it can be easily modified to handle the same structures used in other fields of interest." @default.
- W2044194572 created "2016-06-24" @default.
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- W2044194572 date "1999-08-06" @default.
- W2044194572 modified "2023-09-23" @default.
- W2044194572 title "Orthogonal coupled-mode theory for rectangular dielectric waveguides" @default.
- W2044194572 doi "https://doi.org/10.1117/12.356872" @default.
- W2044194572 hasPublicationYear "1999" @default.
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