LASER BEAM STEERING DEVICE AND SYSTEM INCLUDING THE SAME

    公开(公告)号:US20180062341A1

    公开(公告)日:2018-03-01

    申请号:US15681724

    申请日:2017-08-21

    Abstract: A laser beam steering device and a system including the laser beam steering device are provided. The laser beam steering device includes a refractive index change layer having a refractive index that changes based on an electrical signal; at least one antenna pattern disposed above the refractive index change layer; a wavelength selection layer disposed under the refractive index change layer and configured to correspond to a wavelength of a laser beam incident onto the laser beam steering device; and a driver configured to apply the electrical signal to the refractive index change layer.

    LIGHT DETECTING DEVICE AND OPTICAL SYSTEM INCLUDING THE SAME

    公开(公告)号:US20210208351A1

    公开(公告)日:2021-07-08

    申请号:US16941786

    申请日:2020-07-29

    Abstract: Provided is a light detecting device including a light input device configured to receive light, a plurality of waveguides extending from the light input device, the plurality of waveguides being configured to transmit portions of the light received by the light input device, respectively, a plurality of modulators provided on the plurality of waveguides and configured to modulate phases of the portions of light transmitted in the plurality of waveguides, respectively, at least one graphene layer configured to absorb the portions of light transmitted in the plurality of waveguides, and at least one first electrode and at least one second electrode electrically connected to the at least one graphene layer, respectively.

    PHASE MODULATION ACTIVE DEVICE, METHOD OF DRIVING THE SAME, AND OPTICAL APPARATUS INCLUDING THE PHASE MODULATION ACTIVE DEVICE

    公开(公告)号:US20200348541A1

    公开(公告)日:2020-11-05

    申请号:US16932436

    申请日:2020-07-17

    Abstract: A phase modulation active device and a method of driving the same are provided. The method may include configuring, for the phase modulation active device including a plurality of channels that modulate a phase of incident light, a phase profile indicating a phase modulation target value to be implemented by the phase modulation active device; setting a phase limit value of the phase modulation active device; generating a modified phase profile based on the phase profile by modifying the phase modulation target value, for at least one channel from the plurality of channels that meets or exceeds the phase limit value, to a modified phase modulation target value that is less than the phase limit value in the phase profile; and operating the phase modulation active device based on the modified phase profile. Thus, improved optical modulation performance may be achieved.

    BEAM SCANNING APPARATUS AND OPTICAL APPARATUS INCLUDING THE SAME

    公开(公告)号:US20190294019A1

    公开(公告)日:2019-09-26

    申请号:US16277071

    申请日:2019-02-15

    Abstract: A beam scanning apparatus includes a light source configured to emit light, and a reflective phased array device configured to reflect the light emitted from the light source and incident on the reflective phased array device, and electrically adjust a reflection angle of the reflected light reflected by the reflective phased array device, wherein the light source and the reflective phased array device are disposed such the light is incident on the reflective phased array device at an incidence angle with respect to a normal of a reflective surface of the reflective phased array device.

    META DEVICE AND MANUFACTURING METHOD THEREOF
    20.
    发明申请

    公开(公告)号:US20190107738A1

    公开(公告)日:2019-04-11

    申请号:US16139857

    申请日:2018-09-24

    Abstract: A meta device may include: a substrate; a mirror disposed on the substrate; a refractive index modulation layer disposed on the mirror; a nanoantenna facing the mirror with the refractive index modulation layer, the refractive index modulation layer being disposed between the nanoantenna and the mirror; and an insulating layer disposed between the nanoantenna and the refractive index modulation layer and having a non-uniform thickness. Since the thickness of the insulating layer is not uniform, a withstanding voltage characteristic of the meta device is improved.

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