Abstract: An optical-frequency shift device to shift a first optical-signal of a first optical-frequency to a second optical-signal of a second optical-frequency, including a splitter to split the first optical-signal to optical-signals of first and second polarizations, orthogonal each other, a generator to generate first and fourth controlled-light of the first polarization, and second and third controlled-light of the second polarization, each of frequency differences between the first and second controlled-light and between the third and fourth controlled-light having a spacing equal to a difference between the first and second optical-frequencies, a nonlinear optical-medium in which idler light of the second and first polarization are created by causing cross phase modulation of the optical-signals of the first and second polarizations, the first and third controlled-light, and the second and fourth controlled-light, respectively, and an optical-combiner to combine the idler light of the second and first polarizat

Abstract: A computer system has a storage system including a first port and a second port, and a relay apparatus which couples the first port to an initiator apparatus. The storage apparatus stores relay apparatus information indicating a relay apparatus, and initiator information indicating an initiator apparatus. The storage apparatus establishes communications between the first port and a first relay apparatus, and based on communications with the relay apparatus recognizes the initiator apparatus with which the first relay apparatus has established communications. The storage apparatus also stores, in pathway information, a first pathway containing the first port, the first relay apparatus and the initiator apparatus.

Abstract: A relay device includes: a first port, a plurality of second ports, a splitter configured to branch first optical signals input from the first port into the plurality of second ports; and a plurality of optical modulators configured to modulate shared carrier light by multiplexing the carrier light with a plurality of second optical signals with different frequencies input from the plurality of second ports and by inputting the multiplexed carrier light into a plurality of nonlinear optical mediums, and to transmit the carrier light to the first port.

Abstract: An optical multiplexing device includes: a control light generator that generates control lights each being a continuous wave light and a subcarrier signal based on an insertion signal having respective optical frequencies, polarized states of the control lights being perpendicular to each other; and at least one nonlinear optical medium that modulates a carrier light based on the control lights.

Abstract: An optical frequency shifter includes a splitter that branch a first optical signal having a first frequency component, a first mutual phase modulator that generate a second optical signal having a second frequency component and a third optical signal having a third frequency component with mutual phase modulation of the first optical signal and a first optical beat signal, a phase converter that change a phase of an output of the first mutual phase modulator, a second mutual phase modulator that generate the second optical signal and the third optical signal with mutual phase modulation of the first phase converter of output signal and a second optical beat signal, and a combiner that interfere between an output of the second mutual phase modulator and another optical signal obtained by branching of the splitter.

Abstract: Input light includes a multicarrier signal and first CW light of a first optical frequency. A transmitter generates a modulated optical signal based on an inverted signal of a dropped signal. A light source generates second CW light of a second optical frequency. A delay element adjusts a phase difference between the modulated optical signal and the second CW light. The multicarrier signal, the first CW light, the modulated optical signal and the second CW light are input to nonlinear optical medium. A detector detects beat frequency component between the modulated optical signal and the second CW light. A controller controls the delay element so as to increase the beat frequency component. A difference between the first optical frequency and an optical frequency of the dropped optical signal is substantially the same as a difference between the second optical frequency and an optical frequency of the modulated optical signal.

Abstract: An optical add/drop multiplexer processes input light containing reference light and a polarization multiplexed optical signal in which first wavelength division multiplexed optical signal and second wavelength division multiplexed optical signal are multiplexed. Alight source generates first and second oscillation light with different optical frequencies. A drive signal generator generates a drive signal based on a dropped signal corresponding to an optical signal dropped from the first wavelength division multiplexed optical signal. An optical modulator modulates the second oscillation light in accordance with the drive signal to generate a modulated optical signal. A polarization controller controls a polarization state of the first oscillation light and the modulated optical signal. The wavelength division multiplexed light, the first oscillation light and the modulated optical signal whose polarization state are controlled by the polarization controller are input to non-linear optical medium.

Abstract: An image display apparatus according to embodiments includes a display that includes a planar display surface on which an image is displayed, a cover member that includes a curved operation surface being a target for a touch operation, and a touch sensor that detecting the touch operation with respect to the operation surface. Between the cover member and the display, a clear resin body is arranged that is a transmission body that fills a space between the cover member and the display so that the space is not hollow.

Abstract: Input light includes a multicarrier signal and first CW light of a first optical frequency. A transmitter generates a modulated optical signal based on an inverted signal of a dropped signal. A light source generates second CW light of a second optical frequency. A delay element adjusts a phase difference between the modulated optical signal and the second CW light. The multicarrier signal, the first CW light, the modulated optical signal and the second CW light are input to nonlinear optical medium. A detector detects beat frequency component between the modulated optical signal and the second CW light. A controller controls the delay element so as to increase the beat frequency component. A difference between the first optical frequency and an optical frequency of the dropped optical signal is substantially the same as a difference between the second optical frequency and an optical frequency of the modulated optical signal.

Abstract: An optical frequency shifter includes a splitter that branch a first optical signal having a first frequency component, a first mutual phase modulator that generate a second optical signal having a second frequency component and a third optical signal having a third frequency component with mutual phase modulation of the first optical signal and a first optical beat signal, a phase converter that change a phase of an output of the first mutual phase modulator, a second mutual phase modulator that generate the second optical signal and the third optical signal with mutual phase modulation of the first phase converter of output signal and a second optical beat signal, and a combiner that interfere between an output of the second mutual phase modulator and another optical signal obtained by branching of the splitter.

Abstract: OADM processes input light containing reference light and multiplexed optical signals. A splitter splits the input light to generate first and second input light. A receiver generates an electric signal representing the second input light. An estimator estimates a difference in optical frequency between the reference light and a specified optical signal based on the electric signal. Alight source generates first and second light. An optical frequency of the second light is shifted by the estimated difference with respect to that of the first light. A demodulator generates a dropped signal representing the specified optical signal. A drive signal generator generates a drive signal in accordance with an inverted signal of the dropped signal. A modulator modulates the second light with the drive signal to generate a modulated optical signal. The first input light, the first light and the modulated optical signal are input to non-linear optical medium.

Abstract: An optical drop device includes: a clock extractor configured to extract a clock signal from a multi-channel optical signal that includes a plurality of optical signals having different optical frequencies; a pulse generator configured to generate a pulse signal that is synchronized with the clock signal; an optical inverse Fourier transform unit configured to transform the multi-channel optical signal into a time division multiplexing optical signal by using an inverse Fourier transform; and an optical switch configured to drop an optical signal that exists in a time slot to which the pulse signal is applied, from the time division multiplexing optical signal.

Abstract: A computer system has a storage system including a first port and a second port, and a relay apparatus which couples the first port to an initiator apparatus. The storage apparatus stores relay apparatus information indicating a relay apparatus, and initiator information indicating an initiator apparatus. The storage apparatus establishes communications between the first port and a first relay apparatus, and based on communications with the relay apparatus recognizes the initiator apparatus with which the first relay apparatus has established communications. The storage apparatus also stores, in pathway information, a first pathway containing the first port, the first relay apparatus and the initiator apparatus.

Abstract: During filling of a capillary with an electrophoresis medium, this electrophoresis medium receptacle maintains a resting state, and the capillary and the electrophoresis medium receptacle are readily sealed. The electrophoresis medium receptacle is simple in shape, the electrophoresis medium receptacle is readily manufactured, and the electrophoresis medium is readily sealed. The amount of the electrophoresis medium sealed in the electrophoresis medium receptacle is brought into approximation without limit to the amount of the electrophoresis medium filling the capillary, minimizing dead volume. In this electrophoresis medium receptacle, a receptacle filled with an electrophoresis medium is maintained in a sealed state, and a septum which can be pierced by a capillary cathode end is provided. The pressure produced when the capillary cathode end pierces the septum in which the receptacle filled with the electrophoresis medium is sealed transports the electrophoresis medium into the interior of a capillary.

Abstract: An optical signal transmitting device includes direct modulators configured to be driven using electric signals of channels to generate directly-modulated optical signals of channels, a beat light source configured to generate beat light at a specific frequency spacing, subcarrier converters configured to modulate, using the beat light from the beat light source, the directly-modulated optical signals of the channels from the direct modulators to generate optical subcarrier modulation signals of channels, probe light sources configured to generate probe light of channels having frequencies that are different from frequencies of the directly-modulated optical signals of the channels, multiplexers configured to multiplex, for individual channels, the optical subcarrier modulation signals of the channels with the probe light of the channels, and nonlinear optical media configured to perform, for individual channels, optical cross modulation for the optical subcarrier modulation signals and the probe light, which

Abstract: In an optical network system a carrier light propagates along a transmission line. A control light generator included in an optical multiplexing apparatus generates a control light obtained by modulating an intensity-modulated light by a data signal. A multiplexer combines the control light with the carrier light for modulating the carrier light in a nonlinear optical medium in the transmission line by the control light. The carrier light which propagates along the transmission line is modulated in the nonlinear optical medium on the basis of the control light.

Abstract: An optical frequency-division multiplexer includes: a first optical coupler configured to receive a first wavelength-division multiplexed light obtained by wavelength-division multiplexing a first carrier light and a first monitor light and split the first carrier light and the first monitor light from each other; an optical modulator configured to optically modulate the split first carrier light using a signal including a first data signal so as to multiplex the first data signal with the first carrier light; a receiver configured to receive a branched part of the split first monitor light and demodulate a second data signal from the first monitor light; and a second optical coupler configured to couple a remaining part of the split first monitor light and the first carrier light with which the first data signal has been multiplexed.

Abstract: A transmitting apparatus is used in an electrical frequency division multiplex transmission system including nodes that are on an optical transmission path and that respectively frequency-multiplex a sub-carrier of a unique frequency and a carrier wave to transmit information to a receiving apparatus on the optical transmission path. The transmitting apparatus is disposed in each node and includes a determining unit that receives an input of information concerning unused sub-carriers of a transmission signal in the optical transmission path and determines transmission of the information to the receiving apparatus using an unused sub-carrier; an electrical frequency division multiplex transmission unit that using a frequency of the unused sub-carrier determined by the determining unit, modulates the input information to be transmitted to the receiving apparatus; and a coupling unit that adds to the transmission signal in the optical transmission path, a modulated modulation signal.

Abstract: An optical transmission system includes: multiplex transmitting devices, each configured to modulate, with an optical carrier, a data signal modulated into light by an optical modulator in a non-linear optical medium arranged on a transmission path so as to multiplex the data signal into the optical carrier, the data signal having a frequency different in each of the multiplex transmitting devices; a receiving device configured to execute optical-to-electrical conversion on the optical carrier received from the transmission path so as to execute reception process of the data signals multiplexed by the multiplex transmitting devices; and a management device configured to specify a frequency band to be used, based on a modulation band of each of the optical modulators, and manage assignment of the frequency of each of the data signals within the frequency band to be used so as to avoid an effect of harmonics generated upon the optical-to-electrical conversion.

Abstract: An optical drop device includes: a clock extractor configured to extract a clock signal from a multi-channel optical signal that includes a plurality of optical signals having different optical frequencies; a pulse generator configured to generate a pulse signal that is synchronized with the clock signal; an optical inverse Fourier transform unit configured to transform the multi-channel optical signal into a time division multiplexing optical signal by using an inverse Fourier transform; and an optical switch configured to drop an optical signal that exists in a time slot to which the pulse signal is applied, from the time division multiplexing optical signal.