公开(公告)号：US10222551B2

公开(公告)日：2019-03-05

申请号：US15542673

申请日：2016-01-12

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Hyo-Hoon Park ,  Jong-Hun Kim

IPC: G02B6/26 ,  G02B6/125 ,  G02B6/35 ,  G02B6/12

Abstract: A waveguide having a bi-directional optical transmission structure comprises: a main waveguide which is formed in a preset direction; a branch waveguide which is connected to at least one of both ends of the main waveguide; and a reflector which is placed at an intersection where the branch waveguide and the at least one of both ends of the main waveguide are connected, and which has a different refraction index from the refraction index of the main waveguide and the refraction index of the branch waveguide, wherein the reflector refracts or reflects in different forms the bidirectional light signals for transmission and reception, and thereby directs the light signal for transmission to the main waveguide, and separates the light signal for reception to the branch waveguide.

公开(公告)号：US20180246390A1

公开(公告)日：2018-08-30

申请号：US15523664

申请日：2015-12-01

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Hyo-Hoon Park ,  Jong-Hun Kim ,  Ji-Hwan Park

IPC: G02F1/295

CPC classification number: G02F1/2955 ,  G02F2201/305

Abstract: A photonic radiator forming a photonic phased array antenna includes a light waveguide including a waveguide clad and a waveguide core using semiconductor materials, and a grating periodically formed on an upper or lower part of the light waveguide, wherein the photonic radiator receives an input light wave in a direction of the grating and the light waveguide, radiates an output light wave to a space through scattering from the grating, and varies an effective refractive index of the grating through voltage supply or current injection in the vicinity of the photonic radiator to adjust a radiation angle of the output light wave that is radiated to the space.

公开(公告)号：US20170351043A1

公开(公告)日：2017-12-07

申请号：US15239622

申请日：2016-08-17

Applicant: Korea Advanced Institute of Science and Technology

Inventor： HyoHoon Park ,  Jong-Hun Kim ,  Seonghwan Kim

IPC: G02B6/42 ,  G02B5/10 ,  G02B5/08

CPC classification number: G02B6/4214 ,  G02B5/10

Abstract: An optical package according to an embodiment includes a substrate comprising any one of a photodetector or an optical grating coupler and a light source, and a reflector arranged on or over the substrate to reflect light waves radiated from the light source and transmit the reflected light waves to any one of the photodetector or the optical grating coupler.

公开(公告)号：US20170293074A1

公开(公告)日：2017-10-12

申请号：US15481928

申请日：2017-04-07

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Hyo-Hoon Park ,  Jong-Hun Kim ,  Sun-Kyn Han ,  Ji-Hwan Park

IPC: G02B6/124 ,  G02B6/122

CPC classification number: G02B6/124 ,  G02B6/1226 ,  G02B6/34

Abstract: A photonic radiator used for a photonic phased array antenna includes a waveguide including a waveguide clad and a waveguide core that uses semiconductor materials, and a grating that radiates an output light wave to a space by using scattering of an input light wave incident in a direction of the waveguide.