Abstract: Provided is an optical interconnection device in which a volume required for cooling is reduced. In the optical interconnection device, a plurality of optical modules (12) are arranged on a periphery of an LSI (11) electrically connected to an electric wiring board (10), and liquid cooling mechanisms (13, 14) are respectively placed on the LSI (11) and the optical modules (12). The plurality of optical modules (12) may be arranged only on a surface of the electric wiring board (10) where the LSI (11) is mounted, only on a surface opposite to the surface where the LSI (11) is mounted, or on both the same surface as and the opposite surface to the surface where the LSI (11) is mounted.

Abstract: An optical connector 1 is for connecting a connection object 10 to an optical module 21. A slider 3 is slidably held by a housing 2 adapted for positioning the connection object and the optical module. The housing has a first positioning portion for receiving the connection object. The slider has a first pressing portion 3a for elastically pressing the connection object in a first direction toward the first positioning portion and a second pressing portion 3e that elastically acts in a second direction perpendicular to the first direction.

Abstract: A high-frequency power amplifier of the type to be mounted in an RF module for mobile phones having high-frequency power field effect transistors and gate protective diodes which are coupled between the gates and the sources of the high-frequency power field effect transistors. The gate protective diodes have an n type region formed over the main surface of a p type epitaxial layer, a first p type region formed at the center of the main surface of the n type region, a second p type region formed over the main surface of the epitaxial layer around the n type region from the periphery of the main surface of the n type region, and p+ type buried layers for coupling the second p type region to a substrate body. The distance between the end portions of the p+ type buried layers and the n+ type region is 7 ?m or more.

Abstract: Disclosed is a diurethane compound R2(SO2)m(CH2)nOCONH—R1—NHCOO(CH2)n(SO2)mR2 produced by a method allowing a diamine compound H2NR1NH2 to react with a chloroformate compound ClCOO(CH2)n(SO2)mR2 or a method allowing a diisocyanate compound OCNR1NCO to react with a hydroxyl-containing compound R2(SO2)m(CH2)nOH. The diurethane compound is compounded with multivalent amine crosslinkable group-containing acrylic rubber together with a basic vulcanization accelerator to form an acrylic rubber composition. The acrylic rubber composition including the diurethane compound as a vulcanizing agent decreases a delay in the vulcanization rate due to prevention of scorching and also allows a vulcanized article to satisfy the compression set characteristics.

Abstract: An optical connector has a pair of coil springs (30) which are disposed so as to sandwich an optical fiber (50) led out of the rear of a ferrule (20) in substantially the axial direction (A) and which extend in the axial direction (A).

Abstract: Optical connectors can be easily attached to and detached from a housing. An optical connector device 11 adapted to be connected to a mating optical connector device 81 includes a first housing 31 for receiving and holding optical connectors 61, a second housing 41 for holding the first housing 31 in a floating manner, and a fixing member 51 for fixedly attaching the second housing 41 to an attachment object 201. To-be-locked portions 35, 37 of the first housing 31 and locking portions 43, 44 of the second housing 41 detachably engage with each other and cause the first housing 31 to engage with the second housing 41 in a floating manner. The to-be-locked portions 35, 37 and the locking portions 43, 44 engage with each other in a direction perpendicular to a direction A1 of connection to the mating optical connector device 81.

Abstract: In an optical connector adapter for use in connecting a first and a second optical connector plug to each other, a second adapter half is butted against a first adapter half in a predetermined direction. The first and second adapter halves have engaging means for maintaining the first and second adapter halves in a butted state in the predetermined direction. The engaging means is configured to be disposed inside the optical connector adapter and to be prevented from releasing engagement thereof by at least one of the first and second optical connector plugs.

Abstract: In an optical connector including a base housing, a cover housing, and a clamp fixing the cover housing to the base housing, the base housing is provided with a groove for positioning and holding an optical fiber of an optical cable, a first recessed portion continuously formed from the groove, and a second recessed portion continuously formed from the first recessed portion. The first and the second recessed portions have bottom portions different in level from each other to have a stepped portion formed therebetween. The cover housing has a first coating portion for covering the groove and a second coating portion for covering the first and the second recessed portions. The bottom portion of the second recessed portion and the second coating portion presses a coating member of the optical cable to clamp the optical cable.

Abstract: A high-frequency power amplifier of the type to be mounted in an RF module for mobile phones having high-frequency power field effect transistors and gate protective diodes which are coupled between the gates and the sources of the high-frequency power field effect transistors. The gate protective diodes have an n type region formed over the main surface of a p type epitaxial layer, a first p type region formed at the center of the main surface of the n type region, a second p type region formed over the main surface of the epitaxial layer around the n type region from the periphery of the main surface of the n type region, and p+ type buried layers for coupling the second p type region to a substrate body. The distance between the end portions of the p+ type buried layers and the n+ type region is 7 ?m or more.

Abstract: A high-frequency power amplifier of the type to be mounted in an RF module for mobile phones having high-frequency power field effect transistors and gate protective diodes which are coupled between the gates and the sources of the high-frequency power field effect transistors. The gate protective diodes have an n type region formed over the main surface of a p type epitaxial layer, a first p type region formed at the center of the main surface of the n type region, a second p type region formed over the main surface of the epitaxial layer around the n type region from the periphery of the main surface of the n type region, and p+ type buried layers for coupling the second p type region to a substrate body. The distance between the end portions of the p+ type buried layers and the n+ type region is 7 ?m or more.

Abstract: Disclosed is a diurethane compound R2(SO2)m(CH2)nOCONH—R1—NHCOO(CH2)n(SO2)mR2 produced by a method allowing a diamine compound H2NR1NH2 to react with a chloroformate compound ClCOO(CH2)n(SO2)mR2 or a method allowing a diisocyanate compound OCNR1NCO to react with a hydroxyl-containing compound R2(SO2)m(CH2)nOH. The diurethane compound is compounded with multivalent amine crosslinkable group-containing acrylic rubber together with a basic vulcanization accelerator to form an acrylic rubber composition. The acrylic rubber composition including the diurethane compound as a vulcanizing agent decreases a delay in the vulcanization rate due to prevention of scorching and also allows a vulcanized article to satisfy the compression set characteristics.

Abstract: The present invention is to provide a technique which optimizes a gate resistor of a bias circuit to thereby make it possible to greatly improve a distortion characteristic of a power amplifier. A bias circuit used as for biasing the gate of a final-stage power transistor is included in a power amplifier provided in a communication mobile system. In the bias circuit, an inductance and a resistor are series-connected between a power supply voltage and the gate of the power transistor. The resistance value of the resistor is set to approximately the same order as an input impedance of the power transistor. When the input impedance of the power transistor is about 10? or so, for example, the resistor is set to about a few ? to about 100?. Thus, the gain of the power transistor at a low-frequency band can greatly be suppressed.

Abstract: Provided is an optical interconnection device in which a volume required for cooling is reduced. In the optical interconnection device, a plurality of optical modules (12) are arranged on a periphery of an LSI (11) electrically connected to an electric wiring board (10), and liquid cooling mechanisms (13, 14) are respectively placed on the LSI (11) and the optical modules (12). The plurality of optical modules (12) may be arranged only on a surface of the electric wiring board (10) where the LSI (11) is mounted, only on a surface opposite to the surface where the LSI (11) is mounted, or on both the same surface as and the opposite surface to the surface where the LSI (11) is mounted.

Abstract: The light source is disposed in a direction traversing the axial direction A of the optical connector. The optical connector holder comprises an inspection light reflecting portion. The inspection light reflecting portion deflects and reflects the inspection light from the light source to the axial direction A so that the inspection light enters the reference hole portion of the optical connector.

Abstract: In an optical connector including a base housing, a cover housing, and a clamp fixing the cover housing to the base housing, the base housing is provided with a groove for positioning and holding an optical fiber of an optical cable, a first recessed portion continuously formed from the groove, and a second recessed portion continuously formed from the first recessed portion. The first and the second recessed portions have bottom portions different in level from each other to have a stepped portion formed therebetween. The cover housing has a first coating portion for covering the groove and a second coating portion for covering the first and the second recessed portions. The bottom portion of the second recessed portion and the second coating portion presses a coating member of the optical cable to clamp the optical cable.

Abstract: In a photoelectric conversion/connection device (100) including an optical element (320), a mounting board (310) on which the optical element is mounted, and an optical connector (400) which is connected to the mounting board so as to be optically connected to the optical element, the optical connector (400) is arranged on a surface (310a) opposite to a mounting surface (310b) of the mounting board (310) and the optical element (320) is exposed. The photoelectric conversion/connection device (100) includes a motherboard (210) having a main surface (210a) and an electric connector (220) to be mounted on the main surface of the motherboard. The electric connector (220) is detachably connected to the mounting board (310).

Abstract: An information processing method is disclosed for use with an information processing apparatus for acquiring data and executing signal processing on the data.

Abstract: An optical connector 1 is for connecting a connection object 10 to an optical module 21. A slider 3 is slidably held by a housing 2 adapted for positioning the connection object and the optical module. The housing has a first positioning portion for receiving the connection object. The slider has a first pressing portion 3a for elastically pressing the connection object in a first direction toward the first positioning portion and a second pressing portion 3e that elastically acts in a second direction perpendicular to the first direction.

Abstract: A method of producing an optical waveguide connector in which the productivity of a ferrule member can be improved, and the connection loss with a counter connector can be suppressed to a low level is obtained. An optical waveguide connector 11 is obtained by performing: an aligning step of restricting the position of the tip end of an optical waveguide 2 passed through an insertion hole 13b of a ferrule member 13, by a positioning portion of a positioning member 16 which is opposedly placed at the tip end of the ferrule member 13, thereby aligning the optical waveguide 2 to the ferrule member 13; and a bonding step of filing a gap between the optical waveguide 2 which is passed through the insertion hole 13b, and the insertion hole 13b, with an adhesive agent to fix the optical waveguide 2 to the ferrule member 13.

Abstract: In an optical connector adapter for use in connecting a first and a second optical connector plug to each other, a second adapter half is butted against a first adapter half in a predetermined direction. The first and second adapter halves have engaging means for maintaining the first and second adapter halves in a butted state in the predetermined direction. The engaging means is configured to be disposed inside the optical connector adapter and to be prevented from releasing engagement thereof by at least one of the first and second optical connector plugs.