公开(公告)号：US20190162986A1

公开(公告)日：2019-05-30

申请号：US16184495

申请日：2018-11-08

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Joong-Seon Choe ,  Chun Ju Youn ,  Heasin Ko ,  Kap-Joong Kim ,  Byung-seok Choi

IPC分类号： G02F1/01 ,  G02F1/225 ,  H04L9/08

摘要： Provided is an apparatus configured to split light into a plurality of polarizations, the apparatus including an input waveguide configured to receive the light, a first interferometer configured to split the light into a first polarization and a second polarization, and a second interferometer configured to split the light into a third polarization and a fourth polarization, wherein the first interferometer and the second interferometer are connected in parallel, the first interferometer comprises a first output waveguide configured to output the first polarization, and a second output waveguide configured to output the second polarization, and the second interferometer comprises a third output waveguide configured to output the third polarization, and a fourth output waveguide configured to output the fourth polarization.

公开(公告)号：US11860376B2

公开(公告)日：2024-01-02

申请号：US16415708

申请日：2019-05-17

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Kap-Joong Kim ,  Chun Ju Youn ,  Heasin Ko ,  Byung-Seok Choi ,  Joong-Seon Choe

IPC分类号： G02B27/28 ,  H04K1/08

CPC分类号： G02B27/283 ,  G02B27/286 ,  H04K1/08

摘要： Provided is a polarization decomposition device. The polarization decomposition device includes a polarization beam splitter configured to split an optical signal into a first polarized light having a first polarization direction and a second polarized light having a second polarization direction different from the first polarized light, a phase shifter configured to delay a phase of the first polarized light, a polarization rotator configured to rotate the second polarized light so that the polarization direction of the second polarized light is changed, and an interference beam splitter configured to allow the first polarized light in which the phase is delayed and the second polarized light in which the polarization direction is rotated to interfere with each other and split them into a third polarized light and a fourth polarized light.