Segmented traveling wave optical modulators and related methods

    公开(公告)号:US10088733B2

    公开(公告)日:2018-10-02

    申请号:US15230582

    申请日:2016-08-08

    摘要: A segmented traveling wave Mach Zehnder optical modulator is described. The segmented traveling wave Mach Zehnder optical modulator may comprise two or more radio frequency (RF) segments, and each RF segment may be configured to support a modulating RF signal. The modulating RF signals may be configured to modulate an optical signal propagating along an optical path of the segmented traveling wave Mach Zehnder optical modulator. The RF modulating signal in the second RF segment may be generated by amplifying the modulating RF signal of the first RF segment, using an RF amplifier. The RF amplifier may be configured to amplify a band-pass spectral portion of the modulating RF signal.

    SILICON ELECTRO-OPTICAL MODULATOR
    64.
    发明申请

    公开(公告)号:US20170336658A1

    公开(公告)日:2017-11-23

    申请号:US15584509

    申请日:2017-05-02

    发明人: Long Chen

    IPC分类号: G02F1/025 G02B6/134 G02F1/015

    摘要: Disclosed are designs and methods of fabrication of silicon carrier-depletion based electro-optical modulators having doping configurations that produce modulators exhibiting desirable modulation efficiency, optical absorption loss and bandwidth characteristics. The disclosed method of fabrication of a modulator having such doping configurations utilizes counter doping to create narrow regions of relatively high doping levels near a waveguide center.

    SILICON MODULATORS AND RELATED APPARATUS AND METHODS

    公开(公告)号:US20170285437A1

    公开(公告)日:2017-10-05

    申请号:US15472946

    申请日:2017-03-29

    IPC分类号: G02F1/225 G02F1/025

    摘要: An optical Mach Zehnder modulator is described. The optical Mach Zehnder modulator may comprise a plurality of segments separated by curved waveguides. For example, an optical Mach Zehnder modulator may comprise a first waveguide arm having a first pn-junction formed therein, a second waveguide arm having a second pn-junction formed therein, a third waveguide arm coupled to the first waveguide arm via a first curved waveguide and a fourth waveguide arm coupled to the second waveguide arm via a second curved waveguide. The segments may have the same polarities. Alternatively, the segments may have opposite polarities. The different segments may be driven using different RF signals. The RF signals may be delayed from one another.

    FACET OPTICAL COUPLER
    67.
    发明申请

    公开(公告)号:US20170285265A1

    公开(公告)日:2017-10-05

    申请号:US15620601

    申请日:2017-06-12

    发明人: Long Chen

    IPC分类号: G02B6/122 G02B6/24 G02B6/14

    摘要: Techniques for forming a facet optical coupler to couple light at an edge of silicon substrate are described. The facet optical coupler includes a silicon substrate, a layer of second material disposed on the silicon substrate and in direct contact with the edge of the silicon substrate, and an undercut region disposed between a portion of the silicon substrate and the layer of second material. The undercut region is offset from the edge to provide mechanical integrity of the facet optical coupler to improve production of photonic integrated circuits having the facet optical coupler from a wafer.

    Facet optical coupler
    69.
    发明授权

    公开(公告)号:US09703038B1

    公开(公告)日:2017-07-11

    申请号:US14796678

    申请日:2015-07-10

    发明人: Long Chen

    摘要: Techniques for forming a facet optical coupler to couple light at an edge of silicon substrate are described. The facet optical coupler includes a silicon substrate, a layer of second material disposed on the silicon substrate and in direct contact with the edge of the silicon substrate, and an undercut region disposed between a portion of the silicon substrate and the layer of second material. The undercut region is offset from the edge to provide mechanical integrity of the facet optical coupler to improve production of photonic integrated circuits having the facet optical coupler from a wafer.