Abstract: The photosensitive resin composition of the present invention contains a vinyl-based (co)polymer (I) obtained by polymerizing a monomer mixture (?) containing a vinyl-based monomer (a) having a phenolic hydroxyl group, a vinyl-based copolymer (II) having a weight-average molecular weight of 15,000 to 120,000, obtained by polymerizing a monomer mixture (?) containing a vinyl-based monomer (b) represented by CH2?CR1COO(R2O)kR3 (wherein R1=a hydrogen atom or a methyl group, R2=a hydrocarbon group having a carbon number of 1 to 4, R3=a hydrogen atom or a methyl group, and k=1 to 90) and a carboxyl group-containing vinyl-based monomer (c), a photosensitive substance (III), and a compound (IV) which is a specific aromatic polyhydroxy compound.

Abstract: An optical modulator combines and inputs a signal light propagating through the optical network and a control light having information concerning the optical network to a nonlinear optical medium. The optical modulator modulates the signal light according to changes in intensity of the control light, in the nonlinear 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: An optical transmission system includes multiple multiplexers connected in series and each multiplexing an optical signal and given signal light. Each of the multiplexers includes a multiplexing unit that multiplexes the given signal light that is subject to multiplexing and a second optical signal of a frequency that is adjacent to the frequency of a first optical signal that is included in the given signal light; a monitoring unit that monitors deviation between timings of the first optical signal that is included in the signal light multiplexed with the second optical signal by the multiplexing unit, and the second optical signal; and an adjusting unit that based on a result of monitoring by the monitoring unit, adjusts the timing of the second optical signal that is to be multiplexed with the given signal light, by the multiplexing unit.

Abstract: An optical modulator combines and inputs a signal light propagating through the optical network and a control light having information concerning the optical network to a nonlinear optical medium. The optical modulator modulates the signal light according to changes in intensity of the control light, in the nonlinear optical medium.

Abstract: An optical signal processing apparatus includes an input unit to which signal light is input; a wave coupling unit that couples the signal light from the input unit and pump light having a waveform different from that of the signal light; a first nonlinear optical medium that transmits light coupled by the wave coupling unit, the light being the signal light and the pump light; a dispersion medium that transmits the light that has been transmitted through the first nonlinear optical medium; and a second nonlinear optical medium that transmits the light that has been transmitted through the dispersion medium.

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 signal processing apparatus includes: an optical frequency comb generation unit configured to generate an optical frequency comb; an extraction unit configured to extract a plurality of optical components having a certain frequency interval between the optical components from the optical frequency comb; and an optical carrier generation unit configured to multiplex the plurality of optical components with reference light to thereby generate an optical carrier having a center frequency away from the center frequency of the reference light by an integer multiple of the frequency interval.

Abstract: An optical amplifier amplifies signal light and includes a pump light source that outputs pump light of a wavelength different from that of the signal light; a combining unit that combines the signal light and the pump light output by the pump light source, to output combined light; an amplifying unit that has non-linear optical media that transmit the combined light to amplify the signal light, the amplifying unit further removing, in the non-linear optical media, idler light generated from the signal light and the pump light, and outputting light that results; and an extraction filter that extracts the signal light from the light output by the amplifying unit.

Abstract: An all-optical modulator includes a directional coupling unit that multiplexes, on a carrier light beam, a signal light beam of a modulation signal that a carrier signal at a characteristic frequency is modulated with an information signal. The all-optical modulator includes a nonlinear medium that cross-phase-modulates the carrier light beam with the multiplexed signal light beam, and frequency-multiplexes the information signal in the signal light beam on the carrier light beam to generate an optical frequency division multiplexed signal. The all-optical modulator includes a monitoring control unit that controls a polarization control unit that controls a polarization state of the signal light beam in a direction in which an intensity of a modulation component takes a maximum value, based on the intensity of the modulation component involved in a modulation signal at a desired characteristic frequency of the optical frequency division multiplexed signal.

Abstract: An optical signal processing apparatus includes a mixer and a first optical modulator. The mixer modulates a carrier signal of a first specific frequency received from a first oscillator with an information signal to generate a subcarrier modulated signal. The first optical modulator optically modulates, with the subcarrier modulated signal received from the mixer, carrier light optically modulated by a second optical modulator at a second specific frequency received from a second oscillator to generate and output modulated carrier light.

Abstract: A method is described for correlating microscopy images from a number of modalities in a sub diffraction resolution environment. The method may include receiving a number of datasets that may represent microscopy captures from a number of different modalities. The microscopy captures may contain feature markers that may be used to register a number of data points contained in a dataset with data points from another dataset. Upon registering the data points of the datasets, a combined dataset may be produced and a visual image of the combined dataset may be provided.

Abstract: An optical transmission system includes multiple multiplexers connected in series and each multiplexing an optical signal and given signal light. Each of the multiplexers includes a multiplexing unit that multiplexes the given signal light that is subject to multiplexing and a second optical signal of a frequency that is adjacent to the frequency of a first optical signal that is included in the given signal light; a monitoring unit that monitors deviation between timings of the first optical signal that is included in the signal light multiplexed with the second optical signal by the multiplexing unit, and the second optical signal; and an adjusting unit that based on a result of monitoring by the monitoring unit, adjusts the timing of the second optical signal that is to be multiplexed with the given signal light, by the multiplexing unit.

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 signal transmitting apparatus is disposed in an optical frequency division multiplex transmission system that includes plural nodes that are in an optical transmission path and respectively use a unique frequency to frequency-multiplex information with a carrier wave to transmit the information to an optical signal receiving apparatus in the optical transmission path. The optical signal transmitting apparatus outputs the carrier wave and includes a transmitting unit into which information to be delivered to the nodes is input, the transmitting unit transmitting the information using a frequency that does not overlap the unique frequencies used by the nodes; and a multiplexing unit that frequency-multiplexes output of the transmitting unit and the carrier wave, and sends the frequency-multiplexed output to the optical transmission path.

Abstract: In an optical signal processing apparatus, carrier light propagates through a nonlinear optical medium. An optical combiner optically combines output control light for generating idler light of the carrier light with the carrier light. An optical splitter splits the idler light from the carrier light. A receiver acquires a signal multiplexed on the carrier light from the idler light split by the optical splitter.

Abstract: An optical signal receiving apparatus includes: a chromatic dispersion medium having an amount of chromatic dispersion which is determined according to a frequency of the sub-carrier modulation signals so as to receive the sub-carrier modulation signals, a photodetector configured to convert the carrier optical signal that has passed through the chromatic dispersion medium, into electrical signals, and a signal receiving unit configured to receive an electrical signal selected from the electrical signals obtained by the photodetector.

Abstract: A photosensitive resin composition comprising: a vinyl-based polymer (I) obtained by polymerizing a monomer mixture containing a monomer (a) having a phenolic hydroxyl group; a vinyl-based polymer (II) obtained by polymerizing a monomer mixture containing a carboxyl group-containing vinyl monomer (b), and having a weight average molecular weight of 20,000 to 100,000, provided that the vinyl-based polymer (I) is excluded; a quinonediazide compound (III); and a compound (IV) represented by following formula (5). [In the formula, Y is a hydrocarbon group of 1 to 6 carbon atoms; l and m are each independently an integer of 1 to 3; n is 1 or 2; p and q are each independently 0 or 1.].

Abstract: The present invention is related to a photosensitive resin composition containing: a vinyl-based copolymer (I) obtained by polymerizing a monomer mixture containing a monomer (a) having a phenolic hydroxyl group and a carboxyl group-containing vinyl monomer (b); a quinonediazide compound (II) and a compound (III) represented by the following formula (5), and to a photosensitive dry film and a method for forming a patter by using the photosensitive resin composition.

Abstract: Disclosed is a method for rapidly separating radioactive copper from nickel that contains radioactive copper and radioactive cobalt, which comprises dissolving nickel that contains radioactive copper and radioactive cobalt in an acid solution and leading it to pass through a chelating-ion exchange resin-filled column to thereby make nickel, radioactive copper and radioactive cobalt held by the chelating-ion exchange resin, and then leading an acid solution to pass through the chelating-ion exchange resin-filled column to elute nickel and radioactive cobalt, and thereafter leading an acid solution having a higher concentration than that of the previous acid solution to pass through the chelating-ion exchange resin-filled column after nickel and radioactive elution therefrom to thereby elute radioactive copper.