Si photonics using micron-size waveguides

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    This paper explains and demonstrates the unique properties of micron-size silicon-on-insulator (SOI) waveguides. It gives an overview of the silicon photonics research at VTT, as well as latest R&D highlights. The benefits of high mode confinement in rib and strip waveguides are described, reaching from low losses and small footprint to polarization independent operation and ultra-wide wavelength range from 1.2 to over 4 μm. Most of the results are from photonic integrated circuits (PICs) on 3 μm SOI, while a 25 Gbps link with a transceiver on 12 μm SOI is also reported. Wavelength multiplexing and filtering is demonstrated with some breakthrough performance in both echelle gratings and arrayed waveguide gratings. Lowest losses are below 1 dB and lowest cross-talk is below -35 dB. Progress towards monolithically integrated, broadband isolators is described, involving polarization splitters, reciprocal polarization rotators and nonreciprocal Faraday rotation in 3 μm SOI waveguide spirals. Quick update is presented about switches, modulators and Ge photodiodes up to 15 GHz bandwidth. Hybrid integration of lasers, modulators and photodiodes is also reported. The added value of trimmed SOI wafers and cavity-SOI wafers in Si photonics processing is addressed. Latest results also include up-reflecting mirrors with <0.5 dB loss, which support wafer-level testing and packaging.
    Original languageEnglish
    Title of host publicationOptical Components and Materials XVI
    EditorsMichel J. F. Digonnet, Shibin Jiang
    PublisherInternational Society for Optics and Photonics SPIE
    Number of pages12
    DOIs
    Publication statusPublished - 27 Feb 2019
    MoE publication typeA4 Article in a conference publication
    EventOptical Components and Materials XVI: SPIE OPTO Conference OE103 - San Francisco, United States
    Duration: 2 Feb 20197 Feb 2019

    Publication series

    SeriesProceedings of SPIE
    Volume10914
    ISSN0277-786X

    Conference

    ConferenceOptical Components and Materials XVI
    Abbreviated titleSPIE OPTO OE103
    CountryUnited States
    CitySan Francisco
    Period2/02/197/02/19

    Fingerprint

    photonics
    waveguides
    insulators
    silicon
    wafers
    photodiodes
    modulators
    polarization
    echelle gratings
    isolators
    transmitter receivers
    footprints
    Faraday effect
    multiplexing
    packaging
    wavelengths
    integrated circuits
    strip
    switches
    gratings

    Keywords

    • photonics
    • waveguide

    Cite this

    Aalto, T., Cherchi, M., Harjanne, M., Sun, F., Vehmas, T., Bhat, S., ... Haapalinna, A. (2019). Si photonics using micron-size waveguides. In M. J. F. Digonnet, & S. Jiang (Eds.), Optical Components and Materials XVI [109140B] International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 10914 https://doi.org/10.1117/12.2516289
    Aalto, Timo ; Cherchi, Matteo ; Harjanne, Mikko ; Sun, Fei ; Vehmas, Tapani ; Bhat, Srivathsa ; Kapulainen, Markku ; Hokkanen, Ari ; Lehtimäki, Lauri ; Holmberg, Heikki ; Haapalinna, Atte. / Si photonics using micron-size waveguides. Optical Components and Materials XVI. editor / Michel J. F. Digonnet ; Shibin Jiang. International Society for Optics and Photonics SPIE, 2019. (Proceedings of SPIE, Vol. 10914).
    @inproceedings{09a42e78399843e9b6cdae38ee4d9a82,
    title = "Si photonics using micron-size waveguides",
    abstract = "This paper explains and demonstrates the unique properties of micron-size silicon-on-insulator (SOI) waveguides. It gives an overview of the silicon photonics research at VTT, as well as latest R&D highlights. The benefits of high mode confinement in rib and strip waveguides are described, reaching from low losses and small footprint to polarization independent operation and ultra-wide wavelength range from 1.2 to over 4 μm. Most of the results are from photonic integrated circuits (PICs) on 3 μm SOI, while a 25 Gbps link with a transceiver on 12 μm SOI is also reported. Wavelength multiplexing and filtering is demonstrated with some breakthrough performance in both echelle gratings and arrayed waveguide gratings. Lowest losses are below 1 dB and lowest cross-talk is below -35 dB. Progress towards monolithically integrated, broadband isolators is described, involving polarization splitters, reciprocal polarization rotators and nonreciprocal Faraday rotation in 3 μm SOI waveguide spirals. Quick update is presented about switches, modulators and Ge photodiodes up to 15 GHz bandwidth. Hybrid integration of lasers, modulators and photodiodes is also reported. The added value of trimmed SOI wafers and cavity-SOI wafers in Si photonics processing is addressed. Latest results also include up-reflecting mirrors with <0.5 dB loss, which support wafer-level testing and packaging.",
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    author = "Timo Aalto and Matteo Cherchi and Mikko Harjanne and Fei Sun and Tapani Vehmas and Srivathsa Bhat and Markku Kapulainen and Ari Hokkanen and Lauri Lehtim{\"a}ki and Heikki Holmberg and Atte Haapalinna",
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    Aalto, T, Cherchi, M, Harjanne, M, Sun, F, Vehmas, T, Bhat, S, Kapulainen, M, Hokkanen, A, Lehtimäki, L, Holmberg, H & Haapalinna, A 2019, Si photonics using micron-size waveguides. in MJF Digonnet & S Jiang (eds), Optical Components and Materials XVI., 109140B, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 10914, Optical Components and Materials XVI, San Francisco, United States, 2/02/19. https://doi.org/10.1117/12.2516289

    Si photonics using micron-size waveguides. / Aalto, Timo; Cherchi, Matteo; Harjanne, Mikko; Sun, Fei; Vehmas, Tapani; Bhat, Srivathsa; Kapulainen, Markku; Hokkanen, Ari; Lehtimäki, Lauri; Holmberg, Heikki; Haapalinna, Atte.

    Optical Components and Materials XVI. ed. / Michel J. F. Digonnet; Shibin Jiang. International Society for Optics and Photonics SPIE, 2019. 109140B (Proceedings of SPIE, Vol. 10914).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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    AU - Bhat, Srivathsa

    AU - Kapulainen, Markku

    AU - Hokkanen, Ari

    AU - Lehtimäki, Lauri

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    Aalto T, Cherchi M, Harjanne M, Sun F, Vehmas T, Bhat S et al. Si photonics using micron-size waveguides. In Digonnet MJF, Jiang S, editors, Optical Components and Materials XVI. International Society for Optics and Photonics SPIE. 2019. 109140B. (Proceedings of SPIE, Vol. 10914). https://doi.org/10.1117/12.2516289