Demonstration of optical nonlinearity in InGaAsP/InP passive waveguides

Shayan Saeidi, Payman Rasekh, Kashif M. Awan, Alperen Tüğen, Mikko J. Huttunen, Ksenia Dolgaleva

    Research output: Contribution to journalArticleScientificpeer-review

    15 Citations (Scopus)

    Abstract

    We report on the study of the third-order nonlinear optical interactions in InxGa1-xAsyP1-y/InP strip-loaded waveguides. The material composition and waveguide structures were optimized for enhanced nonlinear optical interactions. We performed self-phase modulation, four-wave mixing and nonlinear absorption measurements at the pump wavelength 1568 nm in our waveguides. The nonlinear phase shift of up to 2.5π has been observed in self-phase modulation experiments. The measured value of the two-photon absorption coefficient α2 was 19 cm/GW. The four-wave mixing conversion range, representing the wavelength difference between maximally separated signal and idler spectral components, was observed to be 45 nm. Our results indicate that InGaAsP has a high potential as a material platform for nonlinear photonic devices, provided that the operation wavelength range outside the two-photon absorption window is selected.

    Original languageEnglish
    Pages (from-to)524-530
    Number of pages7
    JournalOptical Materials
    Volume84
    DOIs
    Publication statusPublished - 1 Oct 2018
    Publication typeA1 Journal article-refereed

    Keywords

    • Integrated optics
    • Nonlinear optics
    • Optical devices

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • General Computer Science
    • Atomic and Molecular Physics, and Optics
    • Electrical and Electronic Engineering

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