Si Tel Dalga Kılavuzundan Plazmonik Yiv Dalga Kılavuzuna Kip Dönü¸sümünde Metal Kalınlığının Etkisi

Bu çalı¸smada 1550 nm telekom dalga boyunda çalı¸san, Si tel dalga kılavuzundan plazmonik yiv dalga kılavuzuna kip dönüştürücülerini inceledik. Söz konusu yapılar gittikçe incelen bir geometriye sahiptir. 30-250 nm arasındaki metal (Au) kalınlıkları için %90’dan yüksek güç iletimine sahip en uygun boyutları sunduk. Plazmonik yiv dalga kılavuzuna eşlenen güç ile iletilen toplam gücün nasıl birbirinden ayrılabilece˘gini ayrıntılarıyla açıkladık. İncelememiz yiv dalga kılavuzu kiplerinin uygun bir iç çarpım tanımı sonucu birbirlerine dikgen olmasına dayanmaktadır. Sonuçlarımız plazmonik modülatörlerin bağlanma kaybı ve bit hata oranlarının azaltılmasına katkı sunacaktır.

The Effect of Metal Thickness on Si Wire to Plasmonic Slot Waveguide Mode Conversion

We investigate mode converters for Si wire to plasmonic slot waveguides at1550 nm telecom wavelength. The structures are based on a taper geometry. We provideoptimal dimensions with more than 90% power transmission for a range of metal (Au)thicknesses between 30-250 nm. We provide details on how to differentiate between thetotal power and the power in the main mode of the plasmonic slot waveguide. Our analysisis based on the orthogonality of modes of the slot waveguide subject to a suitable innerproduct definition. Our results are relevant for lowering the insertion loss and the bit errorrate of plasmonic modulators.

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