Electronics and Telecommunications Research Institute

Jong-Moo Lee

Joong-Seon Choe

Min-su Kim

Jin Tae Kim

Seung Koo Park

Suntak Park

Jung Jin Ju

Gyung-Ock Kim

Duk-Jun Kim

Seung Youl Kang

Yong Hae Kim

O-Kyun Kwon

Jin-Tae Kim

Sang Hoon Cheon

Myung Lae Lee

Taehyoung Zyung

Junghyung Pyo

Jung-Ho Song

Sun-Tak Park

Jung-Jin Ju

Seung-Koo Park

Disclosed is a blend prepared by mixing a prepolymer and a vinyl monomer, wherein the prepolymer is prepared by a condensation reaction between a first compound represented by the formula Ar&#x2014;H, where Ar comprises (a) a crosslinkable moiety at one end, (b) a moiety selected from the group consisting of &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;COO&#x2014;, &#x2014;CO&#x2014;, &#x2014;COS&#x2014;, &#x2014;SO&#x2014;, and &#x2014;NH&#x2014;, and (c) one or two repeating units selected from the group consisting of: where A is carbon or nitrogen, and X is hydrogen or halogen; and a second compound consisting of an aromatic moiety. Additionally disclosed is a polymer sheet that is a crosslinked product composed of the blend.

Blend prepared by mixing a prepolymer and a vinyl monomer and a polymer sheet obtained therefrom

An optical waveguide for optical interconnection including a polymer sheet comprising a crosslinked product of a prepolymer, the prepolymer prepared by condensation reaction between a first compound represented by the formula Ar&#x2014;H, where Ar comprises (a) a crosslinkable moiety at one end, (b) a moiety selected from the group consisting of &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;COO&#x2014;, &#x2014;CO&#x2014;, &#x2014;COS&#x2014;, &#x2014;SO&#x2014;, and &#x2014;NH&#x2014;, and (c) one or two repeating units selected from the group consisting of: where A is carbon or nitrogen, and X is hydrogen or halogen; and a second compound consisting of an aromatic moiety.

Compound containing crosslinkable moieties, prepolymer, blend and polymer sheet obtained therefrom, and waveguide for optical interconnection

A prepolymer prepared by condensation reaction between a first compound represented by Formula (1) below:Ar&#x2014;H&#x2003;&#x2003;(1), 

Prepolymer prepared by a condensation reaction and a polymer sheet obtained therefrom

Provided are a light emitting device and an optical coupling module. The device includes a substrate, a light emitting part provided to the substrate, and a reflecting part provided to a lower surface of the substrate. The light emitting part includes an active pattern disposed on the substrate, an upper mirror provided to an upper portion of the active pattern, and a lower mirror provided to a lower portion of the active pattern. The light emitting part may emit light normal to the substrate, and the reflecting part may reflect the emitted light to a side surface of the substrate.

Light emitting device and optical coupling module

Provided is a wireless power transmission device. The wireless power transmission device includes a power coil in which a high frequency current is applied, a transmission coil in which the high frequency current is induced by magnetic induction, the transmission coil configured to generate an non-radiative electromagnetic wave when the transmission coil has the same resonant frequency as an at least one external target device, and a resonant frequency regulator configured to regulate the resonant frequency of the transmission coil. The wireless power transmission device can transmit the power when it has the same resonant frequency as the target device. Therefore, the overheating due to an eddy current may not occur, and the design may be easily varied.

Electric device, wireless power transmission device, and power transmission method thereof

Provided are a waveguide structure and an arrayed waveguide grating structure. The arrayed waveguide grating structure includes an input star coupler, an output star coupler, and a plurality of arrayed waveguides optically connecting the input star coupler and the output star coupler. Each of the arrayed waveguides includes at least one section having a high confinement factor and at least two sections having a relatively low confinement factor. The sections of the arrayed waveguides having a high confinement factor have the same structure.

Waveguide structure and arrayed waveguide grating structure

A waveguide structure is provided. The waveguide structure includes: a slot channel waveguide including first and second patterns, which are spaced apart from each other to define a slot; a first upper layer covering at least a portion of the slot channel waveguide; and a second upper layer covering the remaining portion of the slot channel waveguide. A thermo-optic coefficient (TOC) of the channel waveguide times a TOC of the second upper layer is a negative number.

Waveguide structure

Growing community of inventors

Daejeon, South Korea

Jong-Moo Lee