Abstract:
PURPOSE: A polarization beam splitter based on a self-collimating photonic crystal, a polarization beam splitter slab including the same, and an orthogonal polarization method of a light wave using the same are provided to increase light wave transmittance by providing an anti-reflection film which is able to be applied to both TE(Transverse Electric) and TM(Transverse Magnetic) modes. CONSTITUTION: A beam splitter comprises a dielectric layer(110) and a splitter part(120). The splitter part arranges air holes or rods in the dielectric layer in a two-dimensional lattice shape with the same interval. The splitter part comprises a light input end(123), a TE(Transverse Electric) channel light output end(124), a TM(Transverse Magnetic) channel light output end(125), a polarized beam separation structure part(122), and a self- collimating photonic crystal part(121). The light input end located in one end part of the splitter part receives light waves. A TE channel light output end located in the other end part of the splitter part emits the light waves inputted through the light input end. The polarized beam separation structure part includes a plurality of air hole rows in a diagonal direction with respect to the boundary surface of the light input end. The self-collimating photonic crystal part set a self-collimating frequency with a frequency range less than a wood anomaly point for a plurality of air holes in the outer region of the polarized beam separation structure part.
Abstract:
본 발명에 따른 자기조준 광결정을 기반으로 한 편광 빔스플리터는 유전체층, 유전체층에 복수의 공기구멍들 또는 막대(rod)들이 중심 간에 동일한 간격을 갖고 2차원 격자 형태로 형성되는 스플리터부 및 광 입력단, TE 채널 광 출력단 또는 TM 채널 광 출력단 중 어느 하나 이상의 경계면에 코팅되는 반사방지막부를 포함한다. 스플리터부는 스플리터부의 일 단부에 위치하여 광파가 입사되는 광 입력단, 스플리터부의 각각 다른 타 단부에 위치하여 상기 광 입력단을 통해 입사된 광파가 출사되는 TE 채널 광 출력단 및 TM 채널 광 출력단, 광 입력단을 통해 입사되는 광파가 지나가는 위치에 배치되며, 제1 반경을 갖고, 광 입력단의 경계면과 45°경사를 이루는 사선 방향의 복수의 공기구멍열을 포함하는 편광 빔 분리구조부 및 편광 빔 분리구조부 영역 외의 영역에 복수의 공기구멍들이 우드 변칙점(Wood anomaly) 이하의 주파수 범위에서 자기조준 주파수를 갖게 되는 제2 반경을 갖는 자기조준 광결정부를 포함한다.
Abstract:
PURPOSE: An SPP(Surface Plasmon Polariton) signal switch device is provided to be applied to SPP of various modes according to a kind of a light waveguide. CONSTITUTION: A first metal waveguide has an IMI(Insulator-Metal-Insulator) structure. The IMI structure is composed of a metal layer(111) and a dielectric layer. The dielectric layer is arranged on one side of the metal layer. Another dielectric layer is arranged on the rear side of the metal layer. A second metal waveguide has an IMI structure. The IMI structure is composed of a first metal layer(131) and a dielectric layer. The dielectric layer is arranged on one side of the metal layer. Another dielectric layer is arranged on the rear side of the metal layer. A first side of a polarizing plate(120) is contacted with the first metal waveguide and a second side thereof is contacted with the second metal waveguide. The polarizing plate controls an SPP signal from the first metal waveguide to the second metal waveguide.
Abstract:
PURPOSE: A nano plasmonic mode converting device and a nano plasmon integrated circuit module using the same are provided to design a nano plasmon integrated circuit of various types by diversifying a surface Plasmon polariton mode. CONSTITUTION: An input terminal(200a) is composed of a first metal layer, a second metal layer(212a), and a dielectric layer. A middle terminal(200b) is composed of a first metal layer, a second metal layer(212b) and a dielectric layer. Each metal layer of the middle terminal is expanded from the each metal layer of the input terminal. An output terminal(200c) is composed of a first metal layer, a second metal layer(212c), and a dielectric layer. Each metal layer of the output terminal is expanded from the each metal layer of the middle terminal.