Abstract: A plurality of hierarchy information management devices include a first hierarchy information management unit managing first hierarchy information in which information on instruments is represented in a hierarchy structure, and each hierarchy information management device manages the first hierarchy information of a different one of the instruments.

Abstract: An optical transmission system includes a plurality of transmission lines through which a mode-multiplexed signal obtained by multiplexing a plurality of optical signals of different types of modes is transmitted, and one or more mode group permutation units provided between the plurality of transmission lines. The mode group permutation unit changes, on a mode-group-by-mode-group basis, an optical signal of a mode belonging to a mode group to an optical signal of another mode belonging to a mode group after permutation corresponding to the mode group in such a manner that modes are interchanged between at least some of the plurality of optical signals multiplexed into the mode-multiplexed signal input from one of the plurality of transmission lines on an input side, and outputs the mode-multiplexed signal after mode interchange to one of the plurality of transmission lines on an output side.

Abstract: An optical transmission system including: N transmitters, each of the N transmitters being configured to convert one of N electrical signals indicating data sequences different from one another into an optical signal; a signal generator configured to cause N optical splitters to split the N optical signals output from the N transmitters to convert the N optical signals into M optical signals; a multiplexer configured to convert the M optical signals converted by the signal generator into one mode-multiplexed signal that is excitable in at least M modes; a demultiplexer configured to convert the mode-multiplexed signal converted by the multiplexer into M optical signals; M receivers, each of the M receivers being configured to convert one of the M optical signals converted by the demultiplexer into the electrical signal; and a signal detector configured to perform signal separation on the M electrical signals converted by the M receivers to extract the N data sequences.

Abstract: A plurality of hierarchy information management devices include a first hierarchy information management unit managing first hierarchy information in which information on instruments is represented in a hierarchy structure, and each hierarchy information management device manages the first hierarchy information of a different one of the instruments.

Abstract: A signal receiving apparatus includes at least one signal separating apparatus that separates a specific signal from a plurality of received signals. Each of the at least one signal separating apparatus includes a spatial filtering unit that separates at least one equalized signal and a decision signal outputting unit that generates a first decision signal by deciding the equalized signal and outputs the generated first decision signal. The spatial filtering unit separates the at least one equalized signal by multiplying at least the plurality of received signals among the plurality of received signals and either the first decision signal output from the decision signal outputting unit or a second decision signal output from another signal separating apparatus by predetermined weighting coefficients.

Abstract: Provided is a hot and cold water mixer capable of performing stable temperature control, including a cold water supply pipe, a hot water supply pipe, a mixing pipe, flow rate adjustment valves, temperature sensors, flow rate sensors, a setting unit, and a control unit. When the control unit determines that either one of the flow rate adjustment valves cannot increase the flow rate, and also determines, by comparing the target flow rate for the one flow rate adjustment valve with the flow rate of water flowing through the one flow rate adjustment valve, that the target flow rate for the one flow rate adjustment valve is higher, the control unit calculates and updates the target flow rate for the other flow rate adjustment valve and controls the other flow rate adjustment valve based on the updated target flow rate.

Abstract: An optically amplified repeater system includes optical transmission paths, a multi-channel optical amplifier, one or more Raman amplification pumping light sources, and a wavelength multiplexer. The multi-channel optical amplifier includes K simultaneous pumping light sources, N optical amplification media, and one or more optical couplers, and simultaneously amplifies, with the K simultaneous pumping light sources, light intensities of optical signals that pass through the N optical amplification media and propagate through the optical transmission paths. Light intensities of the wavelength band of the optical signals is Raman amplified by the Raman amplification pumping light. A light intensity of the Raman amplification pumping light output from the one or more Raman amplification pumping light sources is determined in accordance with characteristic differences between the optical signals passing through the optical transmission paths.

Abstract: An optical signal processing apparatus of an embodiment is an optical signal processing apparatus for separating and detecting an optical signal transmitted in a mode division multiplexing optical communication method by signal processing based on a multi-input multi-output (MIMO)-type linear filter. The device includes a signal processing unit configured to estimate weighting factors of the MIMO-type linear filter by sequential calculation based on an affine projection method.

Abstract: An information processing system includes: an entity network obtaining unit configured to obtain an entity network; an influence level calculation unit configured to perform an influence level calculation process based on the entity network; a strategy determining unit configured to present strategies taken by the first entity and receive a selection of any of the presented strategies to determine a selected strategy; and a strategy interpretation unit configured to determine a constraint for the influence level calculation process based on the selected strategy; and an evaluation processing unit. The influence level calculation unit calculates a first influence level under no constraint and a second influence level under the constraint, and the evaluation processing unit evaluates the selected strategy on the basis of a comparison between the first influence level and the second influence level.

Abstract: A mode equalization filter for reducing a difference in optical power between modes of signal light propagating inside FMFs of an MDM optical transmission scheme includes an FMF on the input side, a collimating lens, an ND filter, a condensing lens, and an FMF on the output side. The ND filter includes partial ND filters combined each other and having main surfaces placed in parallel to each other, a ring portion having a low transmittance is provided in a part of the partial ND filter, and a ring portion having a low transmittance is also provided in a part of the partial ND filter. When the ring portions have different aspects, and the partial ND filters are adjusted and set to be slidable in directions of axes, respectively, the partial ND filters have a property that the transmittance of each mode of the signal light differs and can obtain a function of a variable mode equalization filter.

Abstract: An optical repeater in a mode-division-multiplexing (MDM) optical transmission system prevents a signal-to-noise ratio (SNR) from deteriorating due to a loss of a mode demultiplexer. The optical repeater in the MDM optical transmission system is configured to include at least one multimode optical amplifier, a mode demultiplexer, a mode multiplexer, and variable optical attenuators. One of the multimode optical amplifiers is disposed on the input side of the mode demultiplexer.

Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of an electrode pad of a TEG to facilitate the evaluation of electrical characteristics. According to the present invention, the above described problem can be solved by arranging a plurality of probes in a fan shape or manufacturing the probes with micro electro mechanical systems (MEMS) technology.

Abstract: A crosstalk estimation system includes: a light source unit that generates a polarization-multiplexed light, which is a polarized light having multiplexed polarizations, of each wavelength in a sideband of a modulated signal and emits the polarization-multiplexed light of each wavelength; a multiplexer that multiplexes the modulated signal with the polarization-multiplexed light for each core, which is associated with one of the wavelengths; a transmission line that transmits the modulated signal multiplexed with the polarization-multiplexed light of each wavelength through a different core; a separation unit that separates the polarization-multiplexed light from the modulated signal multiplexed with the polarization-multiplexed light for each core; a measurement unit that generates light intensity data on the polarization-multiplexed light of each wavelength; and an estimation unit that estimates a crosstalk between the cores based on a difference in light intensity between the polarization-multiplexed light

Abstract: An optical repeater in an MDM optical transmission system prevents a signal-to-noise ratio (SNR) from deteriorating due to a loss of a mode demultiplexer. The optical repeater in the MDM optical transmission system is configured to include at least one multimode optical amplifier, a mode demultiplexer, a mode multiplexer, and variable optical attenuators. One of the multimode optical amplifiers is disposed on the input side of the mode demultiplexer.

Abstract: When a first connection number of a b-th output port in an a-th wavelength selective switch connected to paths in one side out of a Drop side and an Add side is expressed by f(a, b, k), and a second connection number of a d-th output port in a c-th wavelength selective switch connected to paths in the other side out of the Drop side and the Add side is expressed by g(c, d, k), f(a, b, k)?g(c, d, k).

Abstract: A crosstalk estimation system includes: a light source unit that generates a polarization-multiplexed light, which is a polarized light having multiplexed polarizations, of each wavelength in a sideband of a modulated signal and emits the polarization-multiplexed light of each wavelength; a multiplexer that multiplexes the modulated signal with the polarization-multiplexed light for each core, which is associated with one of the wavelengths; a transmission line that transmits the modulated signal multiplexed with the polarization-multiplexed light of each wavelength through a different core; a separation unit that separates the polarization-multiplexed light from the modulated signal multiplexed with the polarization-multiplexed light for each core; a measurement unit that generates light intensity data on the polarization-multiplexed light of each wavelength; and an estimation unit that estimates a crosstalk between the cores based on a difference in light intensity between the polarization-multiplexed light

Abstract: An optical amplifier repeater system includes an optical fiber propagating a light beam in a plurality of propagation modes and an optical amplifier repeater amplifying the light beam propagated through the optical fiber. The optical amplifier repeater includes an optical demultiplexer demultiplexing the light beam in the plurality of propagation modes propagated through the optical fiber into a plurality of single-mode light beams, an optical amplifier amplifying, by simultaneous pumping, intensities of the plurality of single-mode light beams using a light beam generated by one pumping light source, an optical multiplexer multiplexing the plurality of single-mode light beams amplified by the optical amplifier into a light beam in the plurality of propagation modes, and an optical intensity adjusting unit adjusting the intensity of each of the plurality of single-mode light beams at least one of before or after the amplification by the optical amplifier.

Abstract: The tape feeder set-up system has a tape feeder, having an electric motor, for feeding a carrier tape wound on a reel and accommodating multiple components in a predetermined feed direction; a loading table on which the tape feeder can be loaded; a scheduled use determination section for determining whether a component in the tape feeder loaded on the loading table is scheduled to be used based on a component usage schedule, and a control section for reversing the carrier tape in a direction opposite to the predetermined feed direction by controlling the electric motor of the tape feeder when the scheduled use determination section determines that the component is not scheduled to be used.

Abstract: Provided is a mode equalization filter that reduces a light intensity difference between multiple modes of signal light propagating in a core of a few-mode fiber. The mode equalization filter according to the present invention includes: a collimator lens that collimates the signal light emitted from the few-mode fiber; a partial ND filter including a small dot having small transmittance with respect to the collimated signal light; and condensing lenses that condense the signal light transmitted through the partial ND filter on the few-mode fiber. The small dot having the small transmittance is arranged in a part of the partial ND filter, and the partial ND filter is arranged such that, when the collimated signal light is transmitted, a part of the collimated signal light overlaps with the small dot having the small transmittance.

Abstract: An optical transmission system includes a plurality of transmission paths that transmit a mode multiplexing signal, and one or more mode permutation units provided between the transmission paths. The mode permutation unit performs mode permutation to interchange modes to be used between at least some optical signals among respective optical signals of a plurality of types of modes that are multiplexed to the mode multiplexing signal input from the transmission path on an input side, and outputs the mode multiplexing signal subjected to the mode permutation to the transmission path on an output side.