Wavelength-flattened directional couplers: A geometrical approach

Matteo Cherchi

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)7141-7148
JournalApplied Optics
Issue number36
Publication statusPublished - 20 Dec 2003
MoE publication typeA1 Journal article-refereed


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