Polarization rotators

Timo Aalto (Inventor)

    Research output: PatentPatent


    The invention concerns a polarization rotator, comprising a first waveguide layer containing at least a first waveguide (1), said first waveguide having an input end and an output end, a second waveguide layer having at least a second waveguide (2), said second waveguide having an input end and an output end, and at least a first vertical mirror element (4) arranged at the end of at least one of said waveguides to couple light between the output end of the first waveguide and the input end of the second waveguide. The optical axis of the waveguide (1, 2) which has a vertical mirror (4) element at its end is rotated in its waveguide layer at a first angle in order to induce rotation of polarization of light coupled from said first waveguide to said second waveguide with an amount that corresponds to said first angle.

    Patent family as of 21.2.2022
    CN114207489 A 20220318 CN202080049767 20200507     
    EP3966610 A1 20220316 EP20200726506 20200507      
    FI129419 B 20220215 FI20190005374 20190507      
    FI20195374 A 20201108 FI20190005374 20190507      
    WO20225484 A1 20201112 WO2020FI50308 20200507

    Link to current patent family on right 

    Original languageEnglish
    Patent numberFI20195374
    IPCG02B 6/ 27 A I
    Priority date7/05/19
    Publication statusPublished - 8 Nov 2020
    MoE publication typeH1 Granted patent


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