公开(公告)号：US20230350216A1

公开(公告)日：2023-11-02

申请号：US17796534

申请日：2020-01-31

Applicant: LG ELECTRONICS INC. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byounggoo LEE ,  Sangcheon KIM ,  Hyohoon PARK ,  Hyeonho YOON ,  Joonsup SHIM ,  Youngin KIM

IPC: G02B27/09 ,  G02B27/00

CPC classification number: G02B27/0966 ,  G02B27/0087

Abstract: An optical device can include an end-fire optical phased array including an optical splitter to split an optical signal into a plurality of channels, an optical phase controller to control a phase of the optical signal transmitted from the optical splitter, and an end-fire optical radiator to radiate the optical signal transmitted from the optical phase controller. A lens can be further positioned on a path of the radiated optical signal to control a vertical divergence angle of the radiated optical signal.

公开(公告)号：US20220357283A1

公开(公告)日：2022-11-10

申请号：US17680469

申请日：2022-02-25

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Sanghyeon KIM ,  Jinha LIM ,  Joonsup SHIM

IPC: G01N21/95 ,  G02B6/122 ,  H01L21/762

Abstract: Various embodiments relate to an optical detection element and GOI (Ge-on-insulator) device for ultra-small on-chip optical sensing, and a manufacturing method of the same. According to various embodiments, the optical detection element and the GOI device may be implemented on a GOI structure comprising a germanium (Ge) layer, and the GOI device may be implemented to have an optical detection element. Specifically, the GOI device may include a GOI structure with a waveguide region comprising a germanium layer, a light source element configured to generate light for the waveguide region, and at least one optical detection element configured to detect light coming from the waveguide region. At least one slot configured to collect light from the light source element may be formed in the germanium layer in the waveguide region. The light source element may generate light so as to be coupled to the germanium layer in the waveguide region. The optical detection element may detect heat generated as light is propagated from the germanium layer.