Gaussian beams to calculate multimode interference in waveguides

Gustavo Rodriguez Morales

doi:10.1117/12.901969

25 October 2011 Gaussian beams to calculate multimode interference in waveguides

Gustavo Rodriguez Morales

Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 80114N (2011) https://doi.org/10.1117/12.901969
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

In this work, we present an alternative analytical method to describe the multimode interference (MMI) in waveguides. It is common to use numerical calculation to simulate the MMI, but it usually requires a large amount of computational resources to obtain the simulation in the corresponding section of the waveguide. Our method is based in the propagation of multiple Gaussian beams that interfere between them to produce the self-image effect as it appears in the waveguide MMI phenomena. In this case, we can calculate electromagnetic field distribution at an arbitrary propagation distance without the need to calculate the field in the entire waveguide section. This method simplifies the characterization of the MMI based devices as the multiplexor and the called optical fiber beam shaping.

Citation Download Citation

Gustavo Rodriguez Morales "Gaussian beams to calculate multimode interference in waveguides", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80114N (25 October 2011); https://doi.org/10.1117/12.901969

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