Abstract
A new approach to design a wavelength-insensitive optical power splitter is presented. First, a coupled-mode theory is cast in operatorial form. This allows us to solve the equivalent of coupled differential equations as simple limits. The operators are then represented on a generalized Poincaré sphere, and the resulting graphical tool is applied to different structures, giving a clear interpretation of previous results in literature as well as hints on how to find improved solutions.
© 2003 Optical Society of America
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Matteo Cherchi, "Wavelength-flattened directional couplers: a geometrical approach: erratum," Appl. Opt. 61, 1757-1757 (2022)https://opg.optica.org/ao/abstract.cfm?uri=ao-61-7-1757
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