Design and characterization of a mode-splitting Y-junction

G.J. Veldhuis, J.H. Berends, J.H. Berends, Paul Lambeck

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    It will he shown In this paper, that the mode conversion factor (MCF) as defined for Y-junctions, can be profitably applied for the design of three branch junctions for splitting the three lowest-order modes of a channel waveguide. Accordingly, these so-called mode-splitting Ψ-junctions were designed for implementation in PECVD SiON-technology. Propagation calculations point to crosstalk levels well below -20 dB at 10-20 mm junction length. The produced Ψ-junctions show crosstalk of less than -17 dB, mainly originating from the nonhomogeneity of the refractive indexes of the SiON layers
    Original languageUndefined
    Pages (from-to)1746-1752
    JournalJournal of lightwave technology
    Issue number7
    Publication statusPublished - 1996


    • IR-14294
    • METIS-111533

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