摘要:
A sunlight collecting heat receiver includes: a heat-exchange heat receiving tube which receives sunlight collected by heliostats and transfers the sunlight to a heat carrier, wherein the heat-exchange heat receiving tube includes an outward-flow heat receiving tube which is disposed on the upstream in a sunlight incident direction and an inward-flow heat receiving tube which is connected to the outward-flow heat receiving tube through a U tube and is disposed on the downstream in the sunlight incident direction, and wherein the outward-flow heat receiving tube and the inward-flow heat receiving tube are arranged so as to be deviated from each other in the transverse direction perpendicular to the height direction when seen in the sunlight incident direction.
摘要:
A PLC-type delay demodulation circuit includes a planar lightwave circuit that is provided on one PLC chip and demodulates a DQPSK signal. The planar lightwave circuit includes a Y-branch waveguide that branches a DQPSK-modulated optical signal into two optical signals and first and second MZIs that delay the branched optical signals by one bit. The length of a short arm waveguide of the first MZI is different from the length of a short arm waveguide of the second MZI, and the length of an optical path from the Y-branch waveguide to output ports of the first MZI through the short arm waveguide of the first MZI is equal to that of an optical path from the Y-branch waveguide to output ports of the second MZI through the short arm waveguide of the second MZI.
摘要:
A cartridge-based air gun that fires a BB bullet or a resin bullet inside a cartridge using compressed gas, includes an engaging structure of an extractor that enables blowback and the automatic ejection of the cartridge. An extractor, which engages with a rim that is formed at the rear end of a cartridge loaded in a chamber, is pivotally provided on a side portion of a cylinder so as to be rotatable. A claw portion formed at the tip of the extractor engages with the rim of the cartridge by the urging force of a spring provided between the extractor and the cylinder. A slide moves rearward while the cartridge is held inside the chamber. As the cylinder moves rearward with the stopping of the supply of compressed gas from a gas reservoir, the cartridge comes into contact with an ejector, is released from the engagement by the extractor, and is ejected from the chamber.
摘要:
An optical waveguide circuit includes: an optical interferometer including an optical waveguide; and a heating unit that is disposed along at least a part of the optical waveguide included in the optical interferometer and performs heating of imparting, to the optical waveguide, reversible refractive index changes different from each other along two principal axes of refractive index of the optical waveguide and heating of imparting, to the optical waveguide, permanent refractive index changes different from each other along the two principal axes of refractive index of the optical waveguide. The optical interferometer has a polarization dependent frequency shift that is reduced by the heating of imparting the permanent refractive index changes.
摘要:
The present invention provides a wavelength multiplexer/demultiplexer comprising a Mach-Zehnder interferometer and an arrayed waveguide diffraction grating, the wavelength multiplexer/demultiplexer having a simple configuration and being capable of reducing the degradation in the temperature compensation characteristics of a temperature compensation material provided in the Mach-Zehnder interferometer or the peeling-off of the temperature compensation material, and a method of manufacturing the same. A wavelength multiplexer/demultiplexer comprises an AWG including two separated slab waveguides and an MZI including two arm waveguides. A temperature compensation groove is formed in the two arm waveguides, wherein in a space between the temperature compensation groove, and two separated slab waveguides, a compensation material, the refractive index matching that of the AWG or Mach-Zehnder interferometer, the compensation material having a temperature dependence coefficient with a sign different from that of the temperature dependence coefficient of the waveguide core and having plasticity or fluidity, is filled.
摘要:
There is provided a PC including a guest OS group which manages a group including an OS executed in an office, an information-management section which manages communication capability information which is set to communication-capable information or communication-incapable information, a being-inside-office determination processing section which determines whether or not the PC is used in the office, which sets the communication capability information to the communication-capable information when the being-inside-office determination processing section determines that the PC is used in the office, and which sets the communication capability information to the communication-incapable information when the being-inside-office determination processing section determines that the PC is not used in the office, and a communication control section which controls communication with another device performed by an OS execution section which executes the OS included in the group based on the communication capability information.
摘要:
Disclosed are a PLC-type delay demodulation circuit and a PLC-type optical interferometer capable of reducing the size of a PLC chip with respect to the arrangement of various kinds of light output waveguides. In a PLC-type delay demodulation circuit, arm waveguides of a first MZI and arm waveguides of a second MZI are formed so as to overlap each other in the same region of a planar lightwave circuit. The optical paths of the MZIs are arranged such that the propagation directions of two DQPSK signals branched by a Y-branch waveguide are opposite to each other.
摘要:
The PLC-type delay demodulation circuit includes a planar lightwave circuit that is provided on one PLC chip and demodulates a DQPSK signal. The planar lightwave circuit includes a Y-branch waveguide that branches a DQPSK-modulated optical signal into two optical signals and first and second MZIs that delay the branched optical signals by one bit. A wave plate is provided in central portions of first and second arm waveguides of the first MZI and first and second arm waveguides of the second MZI in such a manner that the wave plate intersects all of the four arm waveguides, the four arm waveguides being close to one another in a portion where the wave plate is provided.
摘要:
It is desired to perform assemble, disassemble, maintenance and the like, especially of a large site superconducting coil device, in a short time. The superconducting coil device includes a plurality of coil units arranged in a circle circumference to form a toroidal shape. Each of the plurality of coil units includes a cryostat and a superconducting coil stored in the cryostat, and has a first surface parallel with a radius of the circle circumference and a second surface parallel with the radius of the circle circumference and arranged in a first direction side of the circle circumference to the first surface. The first surface contacts with the second surface of a coil unit adjacent in one direction among the plurality of coil units. The second surface contacts with the first surface of a coil unit adjacent in other direction among the plurality of coil units.
摘要:
A superconduction apparatus includes: a superconductor; a first vacuum vessel configured to accommodate said superconductor; a cooling unit which comprises a cold head configured to generate a temperature at which the superconductor is set to a superconduction state; and a second vacuum vessel configured to accommodate the cooling unit. The head and the superconductor are connected through a first connection hole which communicates the first vacuum vessel and the second vacuum vessel.