Li, Q.
, Moille, G.
, Taheri, H.
, Adibi, A.
and Srinivasan, K.
(2020),
Improved coupled-mode theory for high-index-contrast photonic platforms, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.102.063506, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=929878
(Accessed October 8, 2025)
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Improved coupled-mode theory for high-index-contrast photonic platforms
Published
Author(s)
Qing Li, , Hossein Taheri, Ali Adibi,
Abstract
Coupled-mode theory has been widely used in optics and photonics design. Despite its popularity, several different formulations of coupled-mode theory exist in the literature and their applicable range is not entirely clear, in particular when it comes to high-index- contrast photonics platforms. Here we propose an improved formulation of coupled-mode theory and demonstrate its superior performance through numerical simulations. In particular, application of the improved coupled-mode theory to asymmetric waveguides reveals a necessary correction in the conventional phase matching condition for high-index-contrast materials, which could lead to more accurate photonic circuit designs involving asymmetric elements.Citation
Physical Review A
Volume
102
Issue
6
Pub Type
Journals
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Created December 3, 2020, Updated October 12, 2021