POLARIZATION CONTROLLER
    2.
    发明申请

    公开(公告)号:US20210255405A1

    公开(公告)日:2021-08-19

    申请号:US16791258

    申请日:2020-02-14

    IPC分类号: G02B6/42

    摘要: Conventional systems use a polarization-maintaining fiber (PMF) in order to maintain the light in the same polarization between a laser light source and an optical waveguide on a photonic integrated circuit (PIC). A polarization controller may be provided at an input port of the PIC configured for the manipulation of one or both of the TE0 and TM0 polarized light modes. The polarization controller may include a polarization beam splitter/rotator (PBSR), including a plurality of phase tuners and a plurality of couplers which are coupled together by waveguides, all of which are integrated in a device layer on the PIC.

    Null bias mach-zehnder interferometer with ring resonators

    公开(公告)号:US10901153B2

    公开(公告)日:2021-01-26

    申请号:US16231744

    申请日:2018-12-24

    IPC分类号: G02B6/293 G02B6/12

    摘要: In Mach-Zehnder interferometer (MZI) based modulators (MZM) input laser light comes in from one side, gets split into two MZI arms, then recombined at an opposite side. Each MZI arm may be phase or intensity modulated depending on the set phase offset, whereby coherent or intensity modulation may be performed which can later be de-coded by a receiver. Ring resonator type modulators (RRM) are compact; however, their phase response is nonlinear, normally limiting their application in coherent phase modulation. However, a combined MZI RRM overcomes the shortcomings of the prior art by providing a novel structure and driving scheme for use with semiconductor photonics that takes advantage of the compactness of ring modulators and the linearity of MZI by setting the ring resonators to resonate at the input laser light wavelength.

    Polarization controller
    8.
    发明授权

    公开(公告)号:US11092745B1

    公开(公告)日:2021-08-17

    申请号:US16791258

    申请日:2020-02-14

    IPC分类号: G02B6/126 G02B6/27

    摘要: Conventional systems use a polarization-maintaining fiber (PMF) in order to maintain the light in the same polarization between a laser light source and an optical waveguide on a photonic integrated circuit (PIC). A polarization controller may be provided at an input port of the PIC configured for the manipulation of one or both of the TE0 and TM0 polarized light modes. The polarization controller may include a polarization beam splitter/rotator (PBSR), including a plurality of phase tuners and a plurality of couplers which are coupled together by waveguides, all of which are integrated in a device layer on the PIC.