Abstract: The provided programmable photonic circuit includes a tunable optical coupler, an optical phase shifter, and a control unit. First and second waveguides are provided in a first section corresponding to each other in the tunable optical coupler, and the tunable optical coupler includes a first actuator to adjust optical coupling efficiency of an optical signal between the first and second waveguides. One waveguide of the first and second waveguides, and a perturbation waveguide are provided in a second section corresponding to each other in the optical phase shifter, and the optical phase shifter includes a second actuator to change the phase of an optical signal traveling through the one waveguide, by changing an effective refractive index of an optical mode of the one waveguide according to the gap between the one waveguide and the perturbation waveguide. The control unit controls driving signals applied to the first and second actuators.

Abstract: An interface for optical communication, including an input waveguide in which light input from an outside is guided, an output waveguide including a first part abutting against one end of the input waveguide and a second part connected to the first part and a substrate including a Buried oxide (BOX) layer connected to a lower side of the output waveguide, wherein the one end of the input waveguide includes a tapered structure of which a cross-sectional area is reduced by a predetermined angle.

Abstract: An interface for optical communication, including an input waveguide in which light input from an outside is guided, an output waveguide including a first part abutting against one end of the input waveguide and a second part connected to the first part and a substrate including a Buried oxide (BOX) layer connected to a lower side of the output waveguide, wherein the one end of the input waveguide includes a tapered structure of which a cross-sectional area is reduced by a predetermined angle.

Abstract: The present invention relates to a display device using a two-dimensional phase transition material including: a substrate; a metal layer formed on the substrate; an insulation layer formed on the metal layer; a transparent electrode layer formed on the insulation layer; a light absorption layer formed on the transparent electrode layer and formed of a phase transition material; and a passivation layer formed on the light absorption layer, wherein the light absorption layer undergoes reversible phase transition depending on any of temperature, magnetic field and electric field.

Abstract: The present disclosure relates to an integrated phase detector. In an embodiment, a first multi-mode interference coupler that receives the optical signal and outputs optical signals with a plurality of modes, and a second multi-mode interference coupler that receives one of the optical signals with the plurality of modes and a modulated signal generated through performing a phase modulation on another of the optical signals with the plurality of modes by the microwave signal, and outputs a first optical interference signal and a second optical interference signal may be included.

Abstract: The method for manufacturing the heterojunction circuit according to one embodiment of the present disclosure comprises depositing a first electrode on at least a part of a waveguide, moving a semiconductor comprising a second electrode at a lower end thereof onto the first electrode, and depositing a third electrode on an upper end of the semiconductor, wherein the waveguide and the semiconductor comprise different materials. Additionally, the moving step further comprises generating microbubbles by supplying heat to at least a part of the semiconductor, moving the semiconductor on the first electrode by moving the generated microbubbles, and removing the microbubbles by positioning the semiconductor on the first electrode.

Abstract: A ring resonator includes a core. Both ends of the core in a lengthwise direction are connected to have a circular shape. The ring resonator further includes a cladding surrounding the core, a jacket surrounding the cladding and a sleeve surrounding a portion of the jacket. A portion of the core is exposed from the cladding and the jacket.

Abstract: The method for manufacturing the heterojunction circuit according to one embodiment of the present disclosure comprises depositing a first electrode on at least a part of a waveguide, moving a semiconductor comprising a second electrode at a lower end thereof onto the first electrode, and depositing a third electrode on an upper end of the semiconductor, wherein the waveguide and the semiconductor comprise different materials. Additionally, the moving step further comprises generating microbubbles by supplying heat to at least a part of the semiconductor, moving the semiconductor on the first electrode by moving the generated microbubbles, and removing the microbubbles by positioning the semiconductor on the first electrode.

Abstract: The present invention relates to a display device using a two-dimensional phase transition material including: a substrate; a metal layer formed on the substrate; an insulation layer formed on the metal layer; a transparent electrode layer formed on the insulation layer; a light absorption layer formed on the transparent electrode layer and formed of a phase transition material; and a passivation layer formed on the light absorption layer, wherein the light absorption layer undergoes reversible phase transition depending on any of temperature, magnetic field and electric field.

Abstract: The method for manufacturing the heterojunction circuit according to one embodiment of the present disclosure comprises depositing a first electrode on at least a part of a waveguide, moving a semiconductor comprising a second electrode at a lower end thereof onto the first electrode, and depositing a third electrode on an upper end of the semiconductor, wherein the waveguide and the semiconductor comprise different materials. Additionally, the moving step further comprises generating microbubbles by supplying heat to at least a part of the semiconductor, moving the semiconductor on the first electrode by moving the generated microbubbles, and removing the microbubbles by positioning the semiconductor on the first electrode.

Abstract: The present disclosure relates to an incident angle and polarization independent ultrathin broadband perfect absorber including a reflective layer, an active layer formed on the reflective layer, and an impedance matching layer formed on the active layer, wherein the absorber almost completely absorbs light in a wavelength range of 400-800 nm.

Abstract: The present disclosure provides a method for forming an insulating film using a laser beam according to an exemplary embodiment of the present disclosure may include: a step of transferring a 2D material onto a substrate; a step of depositing a metal thin film on the 2D material; a step of irradiating a laser beam to the metal thin film; and a step of forming the metal thin film of the laser beam-irradiated region into an insulating film.

Abstract: The method for manufacturing the heterojunction circuit according to one embodiment of the present disclosure comprises depositing a first electrode on at least a part of a waveguide, moving a semiconductor comprising a second electrode at a lower end thereof onto the first electrode, and depositing a third electrode on an upper end of the semiconductor, wherein the waveguide and the semiconductor comprise different materials. Additionally, the moving step further comprises generating microbubbles by supplying heat to at least a part of the semiconductor, moving the semiconductor on the first electrode by moving the generated microbubbles, and removing the microbubbles by positioning the semiconductor on the first electrode.

Abstract: A device forming a photonic phased array antenna includes a low-refractive dielectric substrate, a nano-structured thin film formed on the low-refractive dielectric structure, and a high-refractive semiconductor waveguide formed over the low-refractive dielectric substrate and configured to operate in a single mode in the nano-structured thin film, wherein an antenna radiating a phase-modulated light wave to a free space is miniaturized to concentrate a radiated beam of a phased array antenna and to widen a scanning range.

Abstract: A device forming a photonic phased array antenna includes a low-refractive dielectric substrate, a nano-structured thin film formed on the low-refractive dielectric structure, and a high-refractive semiconductor waveguide formed over the low-refractive dielectric substrate and configured to operate in a single mode in the nano-structured thin film, wherein an antenna radiating a phase-modulated light wave to a free space is miniaturized to concentrate a radiated beam of a phased array antenna and to widen a scanning range.

Abstract: Provided are a method of soldering a functionalized metal oxide, and an electronic device manufactured thereby, and more particularly, a method of soldering a functionalized metal oxide which is capable of growing a solder structure by a hydrothermal synthesis method using a pulsed laser, and is usable in a UV sensor, and an electronic device manufactured thereby. According to the present invention, thermal diffusion generated from a laser is limited due to the use of a pulsed laser, and thus, nanosolder having high density and a shape to be precisely adjustable may be prepared by a hydrothermal synthesis method by the pulsed laser, thereby facilitating the joining of the nanostructure, and further, the nanosolder is formed between the nanostructures, thereby being usable as a metal oxide structure having functionality.

Abstract: Provided are a integrated plasmonic circuit including a plasmonic source using a surface plasmon resonance phenomenon, a plasmonic detector detecting an optical signal generated in the plasmonic source, and a link structure between the plasmonic source and the plasmonic detector, that is, a signal transferring part, and a method of manufacturing the same. Provided are a integrated plasmonic circuit capable of realizing both of miniaturization and speed improvement by overcoming both of a limitation of an electronic device in terms of a signal speed in spite of being excellent in terms of miniaturization efficiency and a limitation of an existing optical device in terms of miniaturization due to a diffraction limitation of light in spite of being improved in terms of a signal speed, and a method of manufacturing the same.

Abstract: Provided are a method of soldering a functionalized metal oxide, and an electronic device manufactured thereby, and more particularly, a method of soldering a functionalized metal oxide which is capable of growing a solder structure by a hydrothermal synthesis method using a pulsed laser, and is usable in a UV sensor, and an electronic device manufactured thereby. According to the present invention, thermal diffusion generated from a laser is limited due to the use of a pulsed laser, and thus, nanosolder having high density and a shape to be precisely adjustable may be prepared by a hydrothermal synthesis method by the pulsed laser, thereby facilitating the joining of the nanostructure, and further, the nanosolder is formed between the nanostructures, thereby being usable as a metal oxide structure having functionality.

Abstract: A condensing-type portable fluorescence detection system which detects antigens using fluorescence includes: a light source generating light to excite a fluorescent substance; a first filter selecting a proper wavelength range from the light generated from the light source; a spherical mirror including two hemispherical mirrors having different curvature radiuses and connected to each other, and condensing the light excited and emitted from the light source; a second filter selecting a proper wavelength range of the light condensed by the spherical mirror; and a photodetector detecting fluorescence from the light condensed by the spherical mirror and passing through the second filter.

Abstract: A condensing-type portable fluorescence detection system which detects antigens using fluorescence includes: a light source generating light to excite a fluorescent substance; a first filter selecting a proper wavelength range from the light generated from the light source; a spherical mirror including two hemispherical mirrors having different curvature radiuses and connected to each other, and condensing the light excited and emitted from the light source; a second filter selecting a proper wavelength range of the light condensed by the spherical mirror; and a photodetector detecting fluorescence from the light condensed by the spherical mirror and passing through the second filter.