Abstract: To efficiently cool an IC chip and a transmission module disposed on the same substrate, amounting structure of transmission module of the present invention includes a motherboard, a package substrate mounted on the motherboard, an IC chip and a plurality of connectors disposed on amounting surface of the package substrate, a plurality of transmission modules connected to the plurality of connectors, and module cooling members having a plurality of slits provided along an connector array direction. The connectors are disposed inside the slits of module cooling members, and the transmission modules can be connected to and disconnected from the connectors disposed through the slits. The transmission modules connected to the connectors are in contact with inside surfaces of the slits and thermally connected to the cooling members.

Abstract: To efficiently cool an IC chip and a transmission module disposed on the same substrate, amounting structure of transmission module of the present invention includes a motherboard, a package substrate mounted on the motherboard, an IC chip and a plurality of connectors disposed on amounting surface of the package substrate, a plurality of transmission modules connected to the plurality of connectors, and module cooling members having a plurality of slits provided along an connector array direction. The connectors are disposed inside the slits of module cooling members, and the transmission modules can be connected to and disconnected from the connectors disposed through the slits. The transmission modules connected to the connectors are in contact with inside surfaces of the slits and thermally connected to the cooling members.

Abstract: A radioactive ray detecting apparatus provides for reduction of the dead area or region where radioactive rays cannot be detected, even if disposing the radioactive ray detectors to be dense or crowded. The radioactive ray detecting apparatus satisfies the following relationships, when assuming that distance between semiconductor elements is “XG1”, while the distance from the semiconductor element of one of the radioactive ray detectors up to the semiconductor element of other radioactive ray detectors is “XG2”, and distance between the semiconductor elements alighted in a Y-direction is “YG1”, and a horizontal pitch of a predetermined pixel pitch to be used as the radioactive ray detector is “a” and a vertical pitch thereof is “b”, width of a surface of each of plural numbers of semiconductor elements is “c” and length thereof is “d”, respectively: c=a?(XG1+XG2)/2 d=b?YG1=2e+(n?2)f.

Abstract: A flexible flat optical cable includes two flexible base sheets, one or more optical fiber core wires arranged between the base sheets and each comprising at least an optical fiber, and an adhesive layer provided between the base sheets to bond the base sheets. A non-adhesive region is formed on a surface of the base sheets or the adhesive layer adjacent, in a thickness direction of the base sheets, to at least a portion of the optical fiber core wires for allowing a portion of the optical fiber core wires to move in a direction intersecting with an axial direction of the optical fiber core wires.

Abstract: To provide a photoelectric composite wiring component combining both characteristics of low power consumption of transmission over electrical wiring and large transmission capacity of optical transmission over optical wiring, and exhibiting a high power efficiency for the transmission capacity. A mechanism for switching between transmission of a transmission signal over an electrical transmission path and that over an optical transmission path depending on the modulation rate or the transmission rate of the transmission signal is provided. When the modulation rate or the transmission rate of the transmission signal is low, power supply to an optical transmitting/receiving section is stopped and the signal is transmitted over the electrical transmission path, thus achieving low power consumption. When the modulation rate or the transmission rate of the transmission signal is high, the signal is transmitted over the optical transmission path, thus achieving a large transmission capacity.

Abstract: A radioactive ray detecting apparatus for enabling to reduce the dead area or region where the radioactive rays cannot be detected, even if disposing the radioactive ray detectors to be dense or crowded, is provided.

Abstract: A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.

Abstract: A flexible flat optical cable includes two flexible base sheets, one or more optical fiber core wires arranged between the base sheets and each comprising at least an optical fiber, and an adhesive layer provided between the base sheets to bond the base sheets. A non-adhesive region is formed on a surface of the base sheets or the adhesive layer adjacent, in a thickness direction of the base sheets, to at least a portion of the optical fiber core wires for allowing a portion of the optical fiber core wires to move in a direction intersecting with an axial direction of the optical fiber core wires.

Abstract: A communication module mounted on a communication apparatus includes a communication apparatus main body including a plurality of slots, and being insertable into or removable from the slots, a plurality of apparatus side signal processing circuits for processing a communication signal which is transmitted to or received from the communication module, and a switch LSI for changing a destination of the communication signal.

Abstract: A communication module mounted on a communication apparatus includes a communication apparatus main body including a plurality of slots, and being insertable into or removable from the slots, a plurality of apparatus side signal processing circuits for processing a communication signal which is transmitted to or received from the communication module, and a switch LSI for changing a destination of the communication signal.

Abstract: A communication module mounted on a communication apparatus which includes plural communication modules, plural apparatus side signal processing circuits for processing a communication signal which is transmitted to and received from the communication modules by a predetermined communication speed, and a switch LSI for changing a destination of the communication signal, includes a switching portion for at least one of dividing the communication signal transmitted and received in a communication speed of the communication modules and combining the communication signals transmitted and received in a communication speed of an external apparatus, and a connector comprising a plurality of ports, the connector being connected to the switching portion.

Abstract: A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.

Abstract: A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.

Abstract: An optical transmission assembly consists of an upper cladding; a lower cladding; a specified width core formed between the upper cladding and the lower cladding; a surface light emitting device mounted on an upper surface of the upper cladding, a light emitting surface of the surface light emitting device facing the core; a reflective surface formed at a position in the core facing the light emitting surface of the surface light emitting device, and inclined in a longitudinal direction of the core; a shift area formed by which a beam from the light emitting surface of the surface light emitting device and the reflective surface are shifted in a width direction of the core relative to each other; and a light receiving device mounted on a lower surface of the lower cladding, a light receiving surface of the light receiving device facing the light emitting surface of the surface light emitting device through the shift area.

Abstract: An optical transmission assembly consists of an upper cladding; a lower cladding; a core formed between the upper cladding and the lower cladding; a surface light emitting device mounted to an upper surface at one end of the upper cladding, a light emitting surface of the surface light emitting device facing the core and emitting wavelength ?1 light thereto; a reflective surface formed in the core and at a position facing the light emitting surface of the surface light emitting device, and inclined in a longitudinal direction of the core; an inclined surface formed in the core and facing the reflective surface in a longitudinal direction of the core, and inclined in a thickness direction of the upper or lower cladding; a wavelength filter formed on the inclined surface and transmitting wavelength ?1 light incident in a longitudinal direction of the core while reflecting wavelength ?2 (?2??1) light incident in the opposite longitudinal direction of the core to the incident direction of the wavelength ?1 light,

Abstract: An optical fiber temperature sensing device has a sensor body; a light source housed in the sensor body; a temperature measuring optical fiber disposed outside the sensor body and extended to a temperature measurement site, wherein, when a light is emitted from the light source into the temperature measuring optical fiber, Stokes light intensity and anti-Stokes light intensity of backscattered light generated in the temperature measuring optical fiber are detected to determine a temperature at the temperature measurement site; a reference temperature optical fiber disposed inside the sensor body; and a controller that is operable to control an output of the light source by monitoring Stokes light intensity and anti-Stokes light intensity of backscattered light generated in the reference temperature optical fiber.

Abstract: To provide a photoelectric composite wiring component combining both characteristics of low power consumption of transmission over electrical wiring and large transmission capacity of optical transmission over optical wiring, and exhibiting a high power efficiency for the transmission capacity. A mechanism for switching between transmission of a transmission signal over an electrical transmission path and that over an optical transmission path depending on the modulation rate or the transmission rate of the transmission signal is provided. When the modulation rate or the transmission rate of the transmission signal is low, power supply to an optical transmitting/receiving section is stopped and the signal is transmitted over the electrical transmission path, thus achieving low power consumption. When the modulation rate or the transmission rate of the transmission signal is high, the signal is transmitted over the optical transmission path, thus achieving a large transmission capacity.

Abstract: An optical transmitter for coupling and wavelength-multiplexing optical signals with a different wavelength has 3 or more light sources for emitting parallel optical signals with a different wavelength, and 2 kinds of optical components with a different optical signal reflectance arranged in an optical path of each light source for coupling into one the optical signals emitted from the light sources respectively. The reflectance or transmittance of each of the 2 kinds of optical components is set so that each optical signal has the same optical signal power when reflected off or transmitted through the optical components for being coupled together and output from the optical transmitter.

Abstract: An optical transmission assembly consists of an upper cladding; a lower cladding; a specified width core formed between the upper cladding and the lower cladding; a surface light emitting device mounted on an upper surface of the upper cladding, a light emitting surface of the surface light emitting device facing the core; a reflective surface formed at a position in the core facing the light emitting surface of the surface light emitting device, and inclined in a longitudinal direction of the core; a shift area formed by which a beam from the light emitting surface of the surface light emitting device and the reflective surface are shifted in a width direction of the core relative to each other; and a light receiving device mounted on a lower surface of the lower cladding, a light receiving surface of the light receiving device facing the light emitting surface of the surface light emitting device through the shift area.

Abstract: An optical transmission assembly consists of an upper cladding; a lower cladding; a core formed between the upper cladding and the lower cladding; a surface light emitting device mounted to an upper surface at one end of the upper cladding, a light emitting surface of the surface light emitting device facing the core and emitting wavelength ?1 light thereto; a reflective surface formed in the core and at a position facing the light emitting surface of the surface light emitting device, and inclined in a longitudinal direction of the core; an inclined surface formed in the core and facing the reflective surface in a longitudinal direction of the core, and inclined in a thickness direction of the upper or lower cladding; a wavelength filter formed on the inclined surface and transmitting wavelength ?1 light incident in a longitudinal direction of the core while reflecting wavelength ?2 (?2??1) light incident in the opposite longitudinal direction of the core to the incident direction of the wavelength ?1 light,