Patents by Inventor Shiori Konisho
Shiori Konisho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11934936Abstract: An optical operational element which enables a multilayered optical neural network to be constructed without using an optical amplifier is provided. The optical operational element includes: a photothermal conversion unit 30 which converts light energy of input light A into thermal energy; a light intensity variation unit 20 which is in contact with the photothermal conversion unit 30 and which varies, in accordance with a temperature variation accompanying heat generation or heat absorption by the photothermal conversion unit 30, intensity of external light B that is introduced from the outside; and a housing unit 10 which houses the light intensity variation unit 20 and which introduces the external light B from one side and outputs output light C obtained by attenuating intensity of the external light B to the outside on an opposite side to the one side.Type: GrantFiled: April 11, 2019Date of Patent: March 19, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shiori Konisho, Takuya Otsuka, Soichi Oka
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Patent number: 11855701Abstract: An optical transmission and reception system includes an optical transmitter including an optical modulator that optically modulates a transmission signal containing a known signal inserted at predetermined intervals and transmits it to an optical transmission line, and an optical receiver including an optical RC circuit that converts an optical modulation signal received from the optical transmission line into a complex time series signal, a photoelectric conversion element that converts the complex time series signal into an electrical intensity signal, and a digital signal processing unit that performs learning using the known signal as a teaching signal and performs demodulation, based on learning results, using the electrical intensity signal received from the photoelectric conversion element.Type: GrantFiled: June 25, 2019Date of Patent: December 26, 2023Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Mitsumasa Nakajima, Shiori Konisho, Toshikazu Hashimoto
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Patent number: 11777632Abstract: An input/output, a wavelength multiplexer/demultiplexer, and a spatial light modulator are provided. The input/output is configured by an optical waveguide into which multiplex light with multiple wavelengths enters. The wavelength multiplexer/demultiplexer performs demultiplexing for forming a plurality of signal lights by spatially demultiplexing the multiplex light emitted from the input/output, by one diffraction, into light of each wavelength, and multiplexing for multiplexing the spatially demultiplexed plurality of signal lights that are different in wavelength. The wavelength multiplexer/demultiplexer is configured by a metasurface. The spatial light modulator reflects each of the plurality of signal lights in a set direction.Type: GrantFiled: July 5, 2019Date of Patent: October 3, 2023Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shiori Konisho, Toshikazu Hashimoto, Kazunori Seno, Mitsumasa Nakajima, Masashi Miyata
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Publication number: 20220360340Abstract: An optical transmission and reception system includes an optical transmitter including an optical modulator that optically modulates a transmission signal containing a known signal inserted at predetermined intervals and transmits it to an optical transmission line, and an optical receiver including an optical RC circuit that converts an optical modulation signal received from the optical transmission line into a complex time series signal, a photoelectric conversion element that converts the complex time series signal into an electrical intensity signal, and a digital signal processing unit that performs learning using the known signal as a teaching signal and performs demodulation, based on learning results, using the electrical intensity signal received from the photoelectric conversion element.Type: ApplicationFiled: June 25, 2019Publication date: November 10, 2022Inventors: Mitsumasa Nakajima, Shiori Konisho, Toshikazu Hashimoto
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Publication number: 20220292336Abstract: An optical information processing device is a device that realizes reservoir computing using light. In the optical information processing device, a portion including a light source, an optical modulator, and an optical splitter is an input layer, a portion including optical couplers, a mode multiplexer, a mode demultiplexer, a multi-mode fiber, and an amplification and attenuator is a reservoir layer, a portion including an optical detector, a multiplier, and a summer is an output layer. The reservoir computing with light includes the input layer, the reservoir layer, and the output layer, and further includes a calculation circuit.Type: ApplicationFiled: August 20, 2019Publication date: September 15, 2022Inventors: Hirotaka Ono, Mitsumasa Nakajima, Shiori Konisho, Kenji Tanaka, Toshikazu Hashimoto
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Publication number: 20220247508Abstract: An input/output, a wavelength multiplexer/demultiplexer, and a spatial light modulator are provided. The input/output is configured by an optical waveguide into which multiplex light with multiple wavelengths enters. The wavelength multiplexer/demultiplexer performs demultiplexing for forming a plurality of signal lights by spatially demultiplexing the multiplex light emitted from the input/output, by one diffraction, into light of each wavelength, and multiplexing for multiplexing the spatially demultiplexed plurality of signal lights that are different in wavelength. The wavelength multiplexer/demultiplexer is configured by a metasurface. The spatial light modulator reflects each of the plurality of signal lights in a set direction.Type: ApplicationFiled: July 5, 2019Publication date: August 4, 2022Inventors: Shiori Konisho, Toshikazu Hashimoto, Kazunori Seno, Mitsumasa Nakajima, Masashi Miyata
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Publication number: 20220137485Abstract: Provided is an optical signal processing apparatus capable of improving computing accuracy without increasing the number of nodes of a reservoir layer. An optical signal processing apparatus for converting an input one-dimensional signal to an optical signal to perform signal processing includes: an input unit configured to perform linear processing on the input one-dimensional signal to convert the input one-dimensional signal to an optical signal of multi-wavelength; a reservoir unit connected to an output of the input unit and configured to perform linear processing and nonlinear processing on the optical signal; and an output unit connected to an output of the reservoir unit and configured to convert the optical signal to an electrical signal and perform linear processing to output a one-dimensional output.Type: ApplicationFiled: February 7, 2020Publication date: May 5, 2022Inventors: Shiori Konisho, Toshikazu Hashimoto, Mitsumasa Nakajima
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Publication number: 20210318714Abstract: An optical signal processing device capable of performing computation without changing a device configuration even when the number of input and output dimensions changes is provided. An optical signal processing device for converting an input M (M is an integer equal to or greater than 2)-dimensional input signal to an optical signal to perform signal processing includes an input unit configured to convert the input M-dimensional input signal to a one-dimensional input signal, and perform linear processing on the one-dimensional input signal to convert the one-dimensional input signal to an optical signal, a reservoir unit connected to an output of the input unit and configured to perform linear processing and nonlinear processing on the optical signal, and an output unit connected to an output of the reservoir unit and configured to convert the optical signal to an electrical signal to perform linear processing, and output an N-dimensional output.Type: ApplicationFiled: August 14, 2019Publication date: October 14, 2021Inventors: Shiori Konisho, Toshikazu Hashimoto, Mitsumasa Nakajima
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Publication number: 20210181782Abstract: Provided is an optical signal processing device capable of improving computing accuracy without increasing the number of nodes of a reservoir layer. An optical signal processing device for converting an input one-dimensional signal to an optical signal and performing signal processing includes an input unit configured to perform linear processing on the input one-dimensional signal to convert the one-dimensional signal to an optical signal, a reservoir unit connected to an output of the input unit and configured to perform linear processing and nonlinear processing on the optical signal, an output unit connected to an output of the reservoir unit and configured to convert the optical signal to an electrical signal, perform linear processing to output a one-dimensional output, and a determination unit configured to determine whether the one-dimensional output from the output unit is to be output or to be input as the one-dimensional signal to the input unit.Type: ApplicationFiled: August 14, 2019Publication date: June 17, 2021Inventors: Shiori Konisho, Toshikazu Hashimoto, Mitsumasa Nakajima
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Publication number: 20210019595Abstract: An optical operational element which enables a multilayered optical neural network to be constructed without using an optical amplifier is provided. The optical operational element includes: a photothermal conversion unit 30 which converts light energy of input light A into thermal energy; a light intensity variation unit 20 which is in contact with the photothermal conversion unit 30 and which varies, in accordance with a temperature variation accompanying heat generation or heat absorption by the photothermal conversion unit 30, intensity of external light B that is introduced from the outside; and a housing unit 10 which houses the light intensity variation unit 20 and which introduces the external light B from one side and outputs output light C obtained by attenuating intensity of the external light B to the outside on an opposite side to the one side.Type: ApplicationFiled: April 10, 2019Publication date: January 21, 2021Inventors: Shiori Konisho, Takuya Otsuka, Soichi Oka