摘要:
The present invention provides a long-range surface plasmon optical waveguide sensor which has a reduced loss of an electromagnetic wave, an increased sensitivity and limitation of detection and a high analysis speed, and enables fabrication of a sensor of various sizes such as a small-sized or lightweight system, etc. To this end, the long-range surface plasmon optical waveguide sensor, comprising: a sensor section, wherein the sensor section comprises a substrate, a first dielectric layer stacked on the substrate, a metal thin film stacked on the first dielectric layer, a second dielectric layer stacked on the metal thin film and having a channel penetratingly formed therein in such a fashion that the top surface of the metal thin film is partially exposed into the channel, a metal strip stacked on the second dielectric layer in such a fashion that the underside thereof is partially exposed into the channel, and a third dielectric layer stacked on the metal strip; a light source section for inducing a surface plasmon resonance between the metal thin film and the metal strip; and a detection section for detecting and analyzing a change of light according to the surface plasmon resonance.
摘要:
A surface emitting device and a display apparatus including the same. The surface emitting device includes: a light source; and a light guide plate having a light exit surface on which holographic patterns are formed, and guiding light emitted by the light source such that the guided light is emitted from the light exit surface, wherein the holographic patterns are arranged so that light incident on the light guide plate without passing through any side surface of the light guide plate can be incident on the holographic patterns at an azimuth greater than 45° at which light emitting efficiency is low and light incident on the light guide plate and reflected by any side surface of the light guide plate can be incident on the holographic patterns at an azimuth at which light emitting efficiency is high.
摘要:
A multistage optical packet switching apparatus with self electro-optic-effect device is disclosed. The apparatus is formed with multistage structure using a plurality of symmetrical self electro-optic-effect devices, self-routing being performed by the control for a header part of optical packets after self-duplication and amplification for the input optical signal. The optical packet switching apparatus using a plurality of symmetrical self electro-optic-effect devices includes a front stage having first and second self electro-optic-effect devices interconnected and a back stage having third and fourth self electro-optic-effect devices interconnected, the 1.quadrature. multistage structure comprising the unit switching modules interconnected each comprising the front and the back stages, the self-duplication and amplification being performed in the front stage and the switching being performed in the back stage. The use of the apparatus is an optical exchange.
摘要:
A structure of optical grating slab waveguide including a light waveguiding layer with linear refractive index disposed on another waveguiding layer having a nonlinear refractive index. The refractive index of nonlinear waveguiding material is a function of intensity of optical power incident therein. The structure of this invention provides an optical waveguide having improved optically coupling coefficient. A optical grating structures formed with a slab waveguide of this invention may be used as a wavelength selective coupling device of bidirectional optical coupler that is particularly useful as demultiplexer or multiplexer.
摘要:
The present invention discloses an optical back-board interconnection module scheme applying optical technique in a back-board interconnection module scheme for distribution of communication signals among opto-electronic integrated circuit (OEIC) boards of data communication network or computer systems with ultra-high speed.The present invention provides a back-board interconnection scheme having out-coupling uniformity level of optical power of below 1% and total out-coupling efficiency of more than 99%, and a method for designing a focusing grating coupler (FGC) array used as an important component in the back-board interconnection scheme and FGC standard specification obtained by such a method. When the inventive module is applied to the back-board interconnection scheme to couple communication signals with ultra-high speed performance among a plurality of opto-electronic integrated circuit boards in the high speed data communication network or high speed computer systems, optical signals transmitted through data bus lines at an ultra-high speed of more than several gigabits per sec. may be distributed to a plurality of OEIC boards. Moreover, the number of data transmission lines that may be integrated per unit area may be increased.
摘要:
The present invention relates to planar integration of an optical system. The optical system is an integration of a crossover switching network having several optical elements such as mirrors, lenses, beam splitters etc., spatially separated on a single wafer using an acute-angle prism array disposed on the surface of a substrate in which the optical elements are integrated.
摘要:
Disclosed is a humidity sensor including: a conductive material in which electric charges are charged; a charger which charges the electric charges in the conductive material; and a measurer which measures a change amount of the electric charges charged in the conductive material.
摘要:
The present invention provides a long-range surface plasmon optical waveguide sensor which has a reduced loss of an electromagnetic wave, an increased sensitivity and limitation of detection and a high analysis speed, and enables fabrication of a sensor of various sizes such as a small-sized or lightweight system, etc. To this end, the long-range surface plasmon optical waveguide sensor, comprising: a sensor section, wherein the sensor section comprises a substrate, a first dielectric layer stacked on the substrate, a metal thin film stacked on the first dielectric layer, a second dielectric layer stacked on the metal thin film and having a channel penetratingly formed therein in such a fashion that the top surface of the metal thin film is partially exposed into the channel, a metal strip stacked on the second dielectric layer in such a fashion that the underside thereof is partially exposed into the channel, and a third dielectric layer stacked on the metal strip; a light source section for inducing a surface plasmon resonance between the metal thin film and the metal strip; and a detection section for detecting and analyzing a change of light according to the surface plasmon resonance.
摘要:
A surface emitting device and a display apparatus including the same. The surface emitting device includes: a light source; and a light guide plate having a light exit surface on which holographic patterns are formed, and guiding light emitted by the light source such that the guided light is emitted from the light exit surface, wherein the holographic patterns are arranged so that light incident on the light guide plate without passing through any side surface of the light guide plate can be incident on the holographic patterns at an azimuth greater than 45° at which light emitting efficiency is low and light incident on the light guide plate and reflected by any side surface of the light guide plate can be incident on the holographic patterns at an azimuth at which light emitting efficiency is high.
摘要:
The present invention provides to a novel grating-assisted directional coupler which is capable of appending a nonlinear thin film to a conventional linear grating-assisted directional coupler, to thereby significantly improve coupling efficiency and hence design a structure having optical multistable characteristics, which comprises; a thin film nonlinear optical waveguide with third-order nonlinearity, which having a first thickness; a first linear optical waveguide formed on the thin film nonlinear optical waveguide, which having a second thickness, wherein a linear refractive index of the first linear optical waveguide is more than that of the thin film nonlinear optical waveguide; an optical waveguide grating patterned in equi-distanced on top surface of the nonlinear optical waveguide; and a second optical waveguide formed at a portion which is displaced from top surface of the first linear optical waveguide by a predetermined distance.