Devices and methods for polarization splitting

Timo Aalto (Inventor)

    Research output: PatentPatent


    The invention relates to devices and methods for polarization splitting, where a first optical coupler having at least one input port which receives an input light beam, and at least two output ports at which said light beam, is split into at least a first and a second arms at a first end of said arms. At least one total internal reflection mirror is coupled to the second arm for inducing polarization-dependent phase shifts to the light beam propagating in the second arm, and a polarization-dependent phase difference between the second and the first arm. A second optical coupler having input ports is coupled to the second and opposite ends of the arms. The second coupler has at least one first output port at which light is coupled from said arms, so that the polarization-dependent phase shift of the at least one total internal reflection mirror causes polarization-dependent coupling of light from said input port to said output port.

    Patent family as of 19.7.2022
    CN113167967 A20210723CN20198007935020191031
    EP3874307 A120210908EP2019088081620191031
    FI129694 B20220630FI2018000593220181102
    FI20185932 A20200503FI2018000593220181102
    US2022003934 AA20220106US2021029077920191031
    WO20089530 A120200507WO2019FI5077720191031

    Link to current patent family on right 

    Original languageEnglish
    Patent numberFI20185932
    IPCG02F 1/ 225 A I
    Priority date2/11/18
    Publication statusPublished - 3 May 2020
    MoE publication typeH1 Granted patent


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