Analysis of a three-core adiabatic directional coupler

Alessandro Salandrino, Konstantinos Makris, Demetrios N. Christodoulides, Yoav Lahini, Yaron Silberberg, Roberto Morandotti

Research output: Contribution to journalArticlepeer-review


We present an analytical description of a new class of three-core adiabatic following directional couplers. Using a multiple-scale WKB method we obtain closed-form expressions describing the optical field dynamics in such structures. The adiabatic evolution occurring in this particular three-core configuration can lead to a spatial switch over of local supermodes and to an irreversible power transfer.

Original languageEnglish
Pages (from-to)4524-4526
Number of pages3
JournalOptics Communications
Issue number23
StatePublished - 1 Dec 2009
Externally publishedYes


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