Light Escalators in Optical Circuits Between Thick and Thin Waveguides

Matteo Cherchi (Inventor), Timo Aalto (Inventor), Sanna Arpiainen (Inventor)

    Research output: PatentPatent


    The invention relates to photonic circuits, in particular to photonic circuits where light is escalated transferred between optical waveguides which are coupled to photonic devices. A first waveguide (33a) on a silicon substrate (34) is provided having a first thickness and a first refractive index. A tapered second waveguide (32) having a second thickness less than the first thickness and a second refractive index higher than said first refractive index is deposited on the first waveguide. At least one layer of an optically active material (31) comprising a photonic device is deposited on the first waveguide adjacent to the second waveguide. The photonic device is interfaced with the wide end of the tapered second waveguide to provide an optical coupling, and the opposite narrow end of the tapered second waveguide is interfaced on top of the first waveguide to provide adiabatic light transfer between said first and second waveguides.

    Patent family as of 29.12.2021
    CA3059510 AA 20191009 CA20183059510 20180423      
    CN110785687 A 20200211 CN201880042080 20180423      
    EP3612875 A1 20200226 EP20180787704 20180423      
    EP3612875 A4 20210324 EP20180787704 20180423      
    JP2020517996 T2 20200618 JP20190556935T 20180423      
    US11175454 BB 20211116 US20190605239 20180423      
    US2020124795 AA 20200423 US20190605239 20180423      
    WO18193167 A1 20181025 WO2018FI50287 20180423

    Link to current patent family on right 

    Original languageEnglish
    Patent numberWO18193167 A1
    IPCG02B 6/14
    Priority date21/04/17
    Filing date23/04/18
    Publication statusPublished - 25 Oct 2018
    MoE publication typeH1 Granted patent


    • OtaNano


    Dive into the research topics of 'Light Escalators in Optical Circuits Between Thick and Thin Waveguides'. Together they form a unique fingerprint.

    Cite this