Abstract: An optical head has a beam input/output coupler on a planar waveguide and other parts including: a light transmitting element emitting a beam; a planar waveguide formed on a substrate and receiving the beam oscillated from the light transmitting element; a beam input/output coupler integrated as a thin film on a portion of the planar waveguide and receiving the beam through the planar waveguide to transmit the beam vertically toward a disc positioned above the planar waveguide or transmitting the beam reflected from the disc through the planar waveguide; and light receiving elements receiving the beam propagated to the planar waveguide through the beam input/output coupler.

Abstract: Provided is a semiconductor and a method for forming the same. The method includes forming a buried insulating layer locally in a substrate. The substrate is etched to form an opening exposing the buried insulating layer, and a silicon pattern spaced in at least one direction from the substrate is formed on the buried insulating layer. A first insulating layer is formed to enclose the silicon pattern.

Abstract: Provided are a stamper fabricated by using an embossing master and a focusing grating coupler fabricated by using the stamper, which is applicable to a subminiature pickup head for a mobile optic disk, whereby it is possible to reduce a weight and a volume of the pickup head with a simple process and low cost and to apply for mass production.

Abstract: Provided is a planar focusing grating coupler, comprising: a light waveguide including a cladding layer and a core layer formed on a substrate and maintaining incident laser light in a single mode; and a focusing grating coupler formed to have a predetermined grating pitch at a certain area over the core layer, wherein the light using to the light waveguide forms a focal point with the grating layer in the direction perpendicular to the focusing grating coupler, whereby an ultra small pickup head for a mobile optical disk can be used.

Abstract: A recording layer of a magneto-optical storage medium having a sublayer in accordance with the present invention comprises a recording layer on which information is recorded and stored; and a sublayer formed above or below the recording layer and made up of an alloy containing a transition metal, wherein a magnetic anisotropy energy of the sublayer is exchange-coupled to the recording layer, thereby enhancing a coercive force of the recording layer. The sublayer may be formed in a single-layered structure having one layer, or in a multi-layered structure having a plurality of layers. The sublayer is preferably made up of an alloy containing a transition metal used for the recording layer. According to the present invention, the coercive force of the recording layer can be increased by an exchange coupling effect between the recording layer and its adjacent sublayer, and thus, the stability of the magnetic domain in the recording layer can be improved.

Abstract: Provided are an integrated inductor and a method of manufacturing the same. The integrated inductor includes: a silicon on insulator (SOI) wafer on which a substrate, an oxide layer, and an active layer are stacked; a first metal interconnection formed in a predetermined region on the SOI wafer; a second metal interconnection electrically connected to the first metal interconnection; and a first interlayer insulating layer formed between the first and second metal interconnections so as to make the first and second metal interconnections spaced from each other by a constant interval, so that the quality factor Q can be enhanced, a frequency where the maximum quality factor Q occurs can be adjusted to a desired band, a leakage current to the substrate can be prevented from occurring, and heat within the inductor can be suppressed from occurring.

Abstract: Provided is a focusing waveguide grating coupler using a leaky mode which can form single output beam while relieving the dependency on manufacturing processes.

Abstract: A method for arranging unit inductors of an inductor having metal wiring that can make a full use of self-inductance and mutual-inductance which are determined based on the proportion of the area of an unit inductor and the proportion of the overlapping area with another unit inductor, and an inductor adopting the unit inductor arranging method.

Abstract: Provided is a focusing waveguide grating coupler using a leaky mode which can form single output beam while relieving the dependency on manufacturing processes.

Abstract: A recording layer of a magneto-optical storage medium having a sublayer in accordance with the present invention comprises a recording layer on which information is recorded and stored; and a sublayer formed above or below the recording layer and made up of an alloy containing a transition metal, wherein a magnetic anisotropy energy of the sublayer is exchange-coupled to the recording layer, thereby enhancing a coercive force of the recording layer. The sublayer may be formed in a single-layered structure having one layer, or in a multi-layered structure having a plurality of layers. The sublayer is preferably made up of an alloy containing a transition metal used for the recording layer. According to the present invention, the coercive force of the recording layer can be increased by an exchange coupling effect between the recording layer and its adjacent sublayer, and thus, the stability of the magnetic domain in the recording layer can be improved.

Abstract: A method for arranging unit inductors of an inductor having metal wiring that can make a full use of self-inductance and mutual-inductance which are determined based on the proportion of the area of an unit inductor and the proportion of the overlapping area with another unit inductor, and an inductor adopting the unit inductor arranging method.

Abstract: A spiral inductor having a lower metal line and an upper metal line with an insulating layer interposed therebetween is provided. In the spiral inductor, the lower and upper metal lines are connected to each other through a via contact passing through the insulating layer. The upper metal line spirally turns inward from the periphery to the center, and the lower metal line includes a first lower metal line crossing the upper metal line and disposed to be parallel with another adjacent first lower metal line, and a second lower metal line disposed to be parallel with the upper metal line.

Abstract: A spiral inductor having a lower metal line and an upper metal line with an insulating layer interposed therebetween is provided. In the spiral inductor, the lower and upper metal lines are connected to each other through a via contact passing through the insulating layer. The upper metal line spirally turns inward from the periphery to the center, and the lower metal line includes a first lower metal line crossing the upper metal line and disposed to be parallel with another adjacent first lower metal line, and a second lower metal line disposed to be parallel with the upper metal line.