Research activity information

• Sep. 2025 Information Photonics 2025 (IP2025), Best Poster Presentation, Wavefront reconstruction with single pixel Shack Hartmann sensor


• Dec. 2019 日本光学会, 第5回OPJ優秀講演賞


• Mar. 2018 北海道大学, 研究科長賞


• Mar. 2018 IEEE Sapporo Section, 2017 IEEE Sapporo Section Student Paper Contest, Best Presentation Award, Measurement of Three-dimensional Reflectance in Frog Blood Cell by Single-shot Optical Tomography Using Virtual Phase Conjugation

  共同研究・競争的資金等の業績IDIRI


• Jan. 2016 応用物理学会, 応用物理学会北海道支部第19回発表奨励賞

• Flexible core-level Spatial Channel Switch Using Multi-Stage Diffraction with LCOS-based Dynamic Gratings for Heterogeneous SDM Fiber Networks

  Yuta Goto, Satoshi Shinada, Yusuke Hirota, Hideaki Furukawa

  Sep. 2026, Journal of Lightwave Technology, 1 - 13, English

  [Refereed]

  Scientific journal


• Suppression of QoT fluctuations in wide-area flexible optical path networks using cascaded burst-mode EDFAs with full C-band flatness

  Yuta Goto, Yusuke Hirota, Ray Man, K. S. Tsang, Kit On Chung, Xiaomin Wang, Hideaki Furukawa

  Optical path switching networks will become increasingly important for providing high-speed, low-latency end-to-end communication for emerging services in the 6G era. Current networks are designed for semi-static operation, providing limited flexibility and dynamic control. When high-speed path provisioning or release is performed, gain transients affect the quality of transmission (QoT) across multiple spans, causing QoT fluctuations. So far, amplifiers that can handle burst signals have been developed to solve this problem, and we have developed the burst-mode erbium-doped fiber amplifier (BM-EDFA). In order to use the BM-EDFA in the core network, it must support gain flatness over the full C-band and large gain for a wide-area optical transmission. In this study, we developed a cascaded three-stage BM-EDFA and experimentally demonstrate, using a 1200 km long-distance optical transmission testbed, that the developed BM-EDFA effectively suppresses gain transients and QoT fluctuations in wide-area and full C-band optical path switching networks. The three-stage configuration of the BM-EDFA supports a large optical gain of up to 27 dB of relatively flat gain across the C-band and wide-area optical networks. We experimentally evaluated the three-stage BM-EDFAs using a long-distance optical transmission testbed consisting of 12 cascaded three-stage BM-EDFAs over 1200 km of optical fiber, carrying 64 Gbaud quadrature phase-shift keying (QPSK) signals across the full C-band. To emulate dynamic network operation, add/drop operations were performed at an intermediate node, and the resulting QoT fluctuations were evaluated over a 1000 km transmission including 10 cascaded BM-EDFAs after the add/drop point. Consequently, while the three-stage BM-EDFA exhibits a steady-state optical signal-to-noise ratio (OSNR) penalty of 2.7 dB, the representative per-channel gain fluctuations at the network edge during add/drop operations are dramatically reduced—from 5.95 to 0.18 dB and from 4.12 to 0.05 dB, respectively—compared with conventional EDFAs. These results demonstrate that the three-stage BM-EDFA enables stable and reliable dynamic optical path switching by effectively suppressing network-scale QoT fluctuations in wide-area, full C-band optical networks.

  Optica Publishing Group, Mar. 2026, Journal of Optical Communications and Networking, 18(4) (4), 365 - 377, English

  [Refereed]

  Scientific journal


• Inline dual-phase modulation method for a compact lensless holographic display

  Jianglian Wang, Atsushi Okamoto, Yuta Goto

  This study presents an innovative inline dual-phase modulation technique for compact lensless holographic displays. By utilizing a single spatial light modulator (SLM) and employing two-phase components derived from double-phase holography symmetrically positioned in the upper and lower halves of the SLM, we achieve a holographic display through the superposition of a digital phase grating. This approach eliminated the need for bulky 4-F systems, resulting in a compact optical setup. Numerical simulations demonstrate that the proposed method provides high-precision image reconstruction using a single SLM, and the experimental results confirm its efficacy in achieving image reconstruction with minimal speckle noise compared to the conventional iterative random phase method. Additionally, incorporating an initial random phase reduces artifacts in practical experimental settings, producing less speckle noise than the conventional iterative random phase method. Moreover, based on the proposed method, a beam splitter was used for further coupling in the reconstruction plane, resulting in an expanded display area while maintaining a compact system. The proposed method can simplify various holographic display systems, including projection, near-eye, and 3D displays.

  Optica Publishing Group, Nov. 2025, Applied Optics, 64(33) (33), 9963 - 9963, English

  [Refereed]

  Scientific journal


• 568.8 Tb/s C+L-Band Transmission Over 5,166 km in a Standard-Cladding Diameter 19-Core Randomly-Coupled Multicore Fiber

  Besma Kalla, Ruben S. Luís, Menno van den Hout, Stefano Gaiani, Daniele Orsuti, Yuta Goto, Georg Rademacher, Benjamin J. Puttnam, Ayumi Inoue, Takuji Nagashima, Tetsuya Hayashi, Pierpaolo Boffi, Thomas Bradley, Chigo Okonkwo, Hideaki Furukawa

  IEEE, Sep. 2025, 2025 European Conference on Optical Communications (ECOC), 1 - 4

  [Refereed]

  International conference proceedings


• Compact-size and high mode-scalability spatial-mode multiplexer using multiplexed volume holograms

  Yuta Goto, Satoshi Shinada, Atsushi Okamoto, Naoya Wada, Hideaki Furukawa

  A spatial mode multiplexer that uses multiplexed volume holograms provides a compact and high mode-scalability solution for multiplexing spatial modes in mode division multiplexing (MDM) transmission. In this approach, multiplexed volume holograms designed to match the electric field distributions of spatial modes are prerecorded on a recording medium such as a photopolymer or a photorefractive crystal. These recorded volume holograms are then used to multiplex and demultiplex spatial modes using the diffraction effect. In this study, we developed and evaluated volume holograms while simultaneously optimizing the exposure dose and compensating for the incident angles of the object and reference beams, ensuring the effective operation of the device as a mode multiplexer/demultiplexer. Additionally, we performed the first evaluation of a back-to-back configuration within a mode multiplexer/demultiplexer using multiplexed volume holograms. The configuration of the mode multiplexer based on volume holograms resulted in a compact optical system comprising two lenses, a single-mode fiber array, and a recording medium. Experimental results demonstrated that when the diffracted beam from the volume holograms was coupled to a three-mode fiber, an excitation ratio of 25 dB or more was achieved between LP01 and LP11, confirming the effective operation of the volume holograms as a spatial mode multiplexer. Furthermore, during the evaluation of the back-to-back characteristics, the maximum modal crosstalk was measured at approximately −20 dB, meeting the requirements for MDM transmission systems.

  Optica Publishing Group, Aug. 2025, Optics Express, 33(18) (18), 38413 - 38430, English

  [Refereed]

  Scientific journal


• 1 02 Petabit/s Transmission Over 1,808.1 km in a 19-Core Randomly-Coupled Multicore Fiber

  R. S. Luis, M. v. d. Hout, S. Gaiani, B. Kalla, D. Orsuti, Y. Goto, G. Rademacher, B. J. Puttnam, A. Inoue, T. Nagashima, T. Hayashi, P. Boffi, T. Bradley, C. Okonkwo, H. Furukawa

  We achieve record recirculating transmission of a 1.02 Pb/s, C+L band, signal over 1808.1 km of a novel 19-core, randomly-coupled multicore fiber, as the highest reported capacity-distance-product in any fiber transmission of 1.86 Exabit/s.km.

  Optica Publishing Group, Mar. 2025, Optical Fiber Communication Conference (OFC) Postdeadline Papers 2025, Th4A.1 - Th4A.1, English

  [Refereed]

  International conference proceedings


• Achieving higher spatial resolution in complex amplitude modulation using a pixel shift-based dual-phase modulation method

  Jianglian Wang, Atsushi Okamoto, Yuta Goto, Akihisa Tomita

  Springer Science and Business Media LLC, Feb. 2025, Optical Review, 32(1) (1), 161 - 169

  [Refereed]

  Scientific journal


• Free-Space Optics-based Multi-Channel Variable Optical Attenuator for FIFO-less 4-Core Fiber Systems with Low-Insertion Loss

  Yuta Goto, Asumi Kaya, Taketoshi Takahata, Tetsuya Kobayashi, Hideaki Furukawa

  Lead, Sep. 2024, 50th European Conference on Optical Communication (ECOC2024), 1709 - 1712, English

  [Refereed]

  International conference proceedings


• Burst-mode EDFA assisted Flexible End-to-end Optical Path Configuration in Multi-domain, Multi-vendor Disaggregated Optical Networks

  Yusuke Hirota, Takahiro Hashimoto, Takeshi Makino, Yuta Goto, Hideaki Furukawa

  Sep. 2024, 50th European Conference on Optical Communication (ECOC2024), 1323 - 1326, English

  [Refereed]

  International conference proceedings


• Time stretch with continuous-wave lasers

  Tingyi Zhou, Yuta Goto, Takeshi Makino, Callen MacPhee, Yiming Zhou, Asad M. Madni, Hideaki Furukawa, Naoya Wada, Bahram Jalali

  Ultrafast single-shot measurement techniques with high throughput are needed for capturing rare events that occur over short time scales. Such instruments unveil non-repetitive dynamics in complex systems and enable new types of spectrometers, cameras, light scattering, and lidar systems. Photonic time stretch stands out as the most effective method for such applications. However, practical uses have been challenged by the reliance of current time stretch instruments on costly supercontinuum lasers and their fixed spectrum. The challenge is further exacerbated by such a laser’s rigid self-pulsating characteristic, which offers no ability to control the pulse timing. The latter hinders the synchronization of the optical source with the incoming signal—a crucial requirement for the detection of single-shot events. Here, we report the first demonstration of time stretch using electro-optically modulated continuous wave lasers. We do this using diode lasers and modulators commonly used in wavelength-division-multiplexing optical communication systems. This approach offers more cost-effective and compact time stretch instruments and sensors and enables the synchronization of the laser source with the incoming signal. Limitations of this new approach are also discussed, and applications in time stretch microscopy and light scattering are explored.

  AIP Publishing, Aug. 2024, APL Photonics, 9(8) (8), 086111-1 - 086111-16, English

  [Refereed]

  Scientific journal


• Spatial Mode-Multiplexed Light Source Using Angularly-Multiplexed Volume Holograms

  Satoshi SHINADA, Yuta GOTO, Hideaki FURUKAWA

  Institute of Electronics, Information and Communications Engineers (IEICE), Nov. 2023, IEICE Transactions on Electronics, E106.C(11) (11), 765 - 773

  [Refereed]

  Scientific journal


• Development of Three-Stage Burst-Mode EDFA with Flat Gain-Spectrum over Full C-Band for Core/Metro Networks

  Yuta Goto, Yusuke Hirota, Ray Man, KS Tsang, Kit On Chung, Xiaomin Wang, Hideaki Furukawa

  Lead, Oct. 2023, 2023 European Conference on Optical Communication (ECOC)

  [Refereed]

  International conference proceedings


• LCOS based Flexible Spatial Channel Switch for Heterogeneous SDM Fiber Network

  Yuta Goto, Satoshi Shinada, Yusuke Hirota, Hideaki Furukawa

  We propose an LCOS based flexible spatial channel switch for a heterogeneous SDM fiber network which can easily connect different types of SDM fibers without FIFO. The switching operation was confirmed by measuring OSNR and BER characteristics.

  Lead, Optica Publishing Group, 2023, Optical Fiber Communication Conference (OFC) 2023

  [Refereed]

  International conference proceedings


• MEMS mirror-based 1×4 Core Selective Switch for 12-core fiber with low insertion-loss

  Yuta Goto, Ruben S Luis, Yusuke Hirota, Satoshi Shinada, Sayaka Nagayama, Asa Higashitani, Tetsuya Kobayashi, Ryohei Fukumoto, Hideaki Furukawa

  Lead, IEEE, Sep. 2021, 2021 European Conference on Optical Communication (ECOC)

  [Refereed]

  International conference proceedings


• Spatial mode exchange technique using volume holograms with a random optical diffuser for reduction of crosstalk

  Shuanglu Zhang, Atsushi Okamoto, Taijun Shiba, Hotaka Hayashi, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

  Apr. 2021, OPTICAL REVIEW, 28(2) (2), 181 - 189, English

  [Refereed]

  Scientific journal


• Phase Analysis Method of Interferometric Pattern Generated for Optical Axis Direction Using Three Laser Beam Interferometry

  Kohhei KAWAHARA, Motoharu FUJIGAKI, Yuta GOTO

  Japan Society for Precision Engineering, Apr. 2019, Journal of the Japan Society for Precision Engineering, 85(4) (4), 352 - 358

  [Refereed]

  Scientific journal


• Experimental implementation of multiplexing/demultiplexing in digital images using virtual phase conjugation for holographic data storage

  Yuta Goto, Atsushi Okamoto, Masanori Takabayashi, Kazuhisa Ogawa, Akihisa Tomita

  Lead, Springer Science and Business Media {LLC}, Oct. 2018, Optical Review, 25(5) (5), 549 - 554

  [Refereed]

  Scientific journal


• Virtual phase conjugation based optical tomography for single-shot three-dimensional imaging

  Yuta Goto, Atsushi Okamoto, Atsushi Shibukawa, Kazuhisa Ogawa, Akihisa Tomita

  Lead, The Optical Society, Feb. 2018, Optics Express, 26(4) (4), 3779 - 3790

  [Refereed]

  Scientific journal


• Digital image multiplexing/demultiplexing method using spatial spectral diffusion and virtual phase conjugation technique for reduction of dynamic range consumption in holographic medium

  Yuta Goto, Atsushi Okamoto, Masanori Takabayashi, Kazuhisa Ogawa, Akihisa Tomita

  The recording density in holographic data storage (HDS) systems is determined by the dynamic range of the recording medium. If a hologram is recorded with a small exposure, the consumption amount of the dynamic range per hologram is reduced, and the recording density can be improved. In this report, we propose a digital image multiplexing/demultiplexing method using spatial spectral diffusion and a virtual phase conjugation technique to reduce the consumption amount of the dynamic range in a recording medium. In our method, multiple signals are simultaneously recorded in a medium by multiplexing those signals using a beam combiner before recording, unlike the general multiplexing method of HDS. Then, each original signal can be reproduced independently by utilizing the property of a random diffuser and a phase-conjugated light. In the simulation, we confirmed that our method can improve the recording density because the consumption of the dynamic range is reduced.

  Lead, IOP Publishing, Sep. 2017, Japanese Journal of Applied Physics, 56(9S) (9S), 09NA07 - 09NA07, English

  [Refereed]

  Scientific journal


• Reference-free holographic diversity interferometry via iterative measurements for high accuracy phase detection

  Yuta Goto, Atsushi Okamoto, Yuta Wakayama, Kazuhisa Ogawa, Jin Nozawa, Akihisa Tomita, Takehiro Tsuritani

  Lead, The Optical Society, Oct. 2016, Optics Express, 24(21) (21), 24739 - 24739

  [Refereed]

  Scientific journal


• Digital confocal microscopy using a virtual 4f-system based on numerical beam propagation for depth measurement without mechanical scanning

  Yuta Goto, Atsushi Okamoto, Masataka Toda, Yasuyuki Kuno, Jin Nozawa, Kazuhisa Ogawa, Akihisa Tomita

  We propose a digital confocal microscope using a virtual 4f-system based on numerical beam propagation for depth measurement without mechanical scanning. In our technique, the information in the sample target along the depth direction is obtained by defocusing the virtual 4f-system, which consists of two virtual lenses arranged in a computer simulation. The principle of our technique is completely different from that of the mechanical scanning method used in the conventional confocal microscope based on digital holography. By using the virtual 4f-system, the measurement and exposure time can be markedly reduced because multilayered tomographic images are generated using a single measurement. In this study, we tested the virtual depth imaging technique by measuring cover glasses arranged along the depth direction.

  Lead, IOP Publishing, Aug. 2016, Japanese Journal of Applied Physics, 55(8S3) (8S3), 08RE04 - 08RE04, English

  [Refereed]

  Scientific journal


• Digital phase conjugate mirror by parallel arrangement of two phase-only spatial light modulators

  Atsushi Shibukawa, Atsushi Okamoto, Yuta Goto, Satoshi Honma, Akihisa Tomita

  The Optical Society, May 2014, Optics Express, 22(10) (10), 11918 - 11918

  [Refereed]

  Scientific journal

• 体積ホログラムを用いた空間モード合分波器における回折角の補正とモード多重光源への応用

  後藤優太, 品田 聡, 古川英昭

  Lead, Jan. 2024, 信学技報, 123(330) (330), 13 - 18


• ［招待講演］ECOC2023報告 ～ 光ネットワーク関連 ～

  後藤優太, 廣田悠介, 古川英昭

  Lead, Nov. 2023, 信学技報, vol. 123, no. 280, OCS2023-50, pp. 9-12, 2023年11月., 123(280) (280), 9 - 12

  [Invited]


• 異種SDMファイバネットワークに向けたLCOS型空間光変調器を用いたフレキシブル光スイッチに関する検討

  後藤優太, 品田 聡, 廣田悠介, 古川英昭

  Lead, Jun. 2023, 信学技報, 123(70) (70), 48 - 52


• 空間光変調器を用いた光周波数領域モード等化に関する検討

  後藤優太, 品田 聡, 岡本 淳, 古川英昭

  Lead, Feb. 2023, 信学技報, 122(379) (379), 68 - 72


• Dynamic Reconfiguration Technologies for Optical Networks

  HIROTA Yusuke, GOTO Yuta

  2023, 情報通信研究機構研究報告, 69(2) (2), 19 - 24, Japanese

  Introduction research institution


• Effect of post-exposure time on diffraction efficiency of volume holograms during recording

  黒田裕也, 岡本淳, 岡本淳, 品田聡, 後藤優太, 富田章久

  2022, 映像情報メディア学会技術報告, 46(6(MMS2022 1-37/ME2022 26-62/AIT2022 1-37)) (6(MMS2022 1-37/ME2022 26-62/AIT2022 1-37))


• ［招待講演］ECOC2021報告 ～ 光ネットワーク関連 ～

  徐 蘇鋼, 古川英昭, 廣田悠介, 後藤優太

  Nov. 2021, 信学技報, 121(242) (242), 5 - 8

  [Invited]


• 体積ホログラム分波器における補償波面の解像度に対する特性

  林 穂高, 岡本 淳, 高畠武敏, 品田 聡, 後藤優太, 和田尚也, 小川和久, 富田章久

  Jan. 2021, 信学技報, 120(309) (309), 37 - 41


• 体積ホログラム分波器の出力信号の波面補償方法

  林 穂高, 岡本 淳, 高畠武敏, 品田 聡, 後藤優太, 和田尚也, 小川和久, 富田章久

  Nov. 2020, 信学技報, 120(229) (229), 11 - 14


• Mode-selective switch for ROADM using volume holograms and spatial light modulator

  Hotaka Hayashi, Atsushi Okamoto, Tomohiro Maeda, Taijun Shiba, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

  SPIE, 31 Jan. 2020, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX


• Spatial mode exchange technique using volume holograms with a random optical diffuser to reduce modal cross-talks

  Zhang Shuanglu, Atsushi Okamoto, Taijun Shiba, Hotaka Hayashi, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

  31 Jan. 2020, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX, 11309, English


• Improvement of Diffraction Efficiency of Mode Demultiplexer Using Volume Hologram at 1550nm

  柴 泰純, 岡本 淳, 林 穂高, 小川 和久, 富田 章久, 高畠 武敏, 後藤 優太, 品田 聡, 和田 尚也

  電子情報通信学会, 17 Oct. 2019, 信学技報, 119(231) (231), 105 - 108, Japanese


• Improvement of noise separation accuracy in image reconstruction in virtual phase conjugation based optical tomography

  永吉 颯太, 岡本 淳, 後藤 優太, 小川 和久, 富田 章久

  電子情報通信学会, 19 Feb. 2019, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 118(449) (449), 71 - 74, Japanese


• Study on Optical Information Processing by Virtual Phase Conjugation Technique using Complex Amplitude Control

  Yuta Goto

  Mar. 2018


• Calculation of Optics using GPGPU

  後藤 優太, 岡本 淳

  Lead, 日本実験力学会, Mar. 2018, 実験力学 : Journal of JSEM : Journal of the Japan Society for Experimental Mechanics, 18(1) (1), 64 - 66, Japanese


• Experiment on digital image multiplexing/demultiplexing using virtual phase conjugation for high density holographic memory

  後藤 優太, 岡本 淳, 小川 和久, 富田 章久

  Lead, 電子情報通信学会, 15 Feb. 2018, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117(432) (432), 261 - 265, Japanese


• Measurement of differential mode delay using reference-free low-coherence digital holography

  Shogo Hoshino, Atsushi Okamoto, Yuta Goto, Kazuhisa Ogawa, Akihisa Tomita, Yuta Wakayama, Takehiro Tsuritani

  SPIE, 29 Jan. 2018, Next-Generation Optical Communication: Components, Sub-Systems, and Systems VII


• Experiment on Spatial Mode Separation and Conversion Technique Using Volume Hologram

  水川 郁弥, 岡本 淳, 後藤 優太, 清水 新平, 小川 和久, 富田 章久

  電子情報通信学会, 20 Feb. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116(464) (464), 157 - 161, Japanese


• Experiment on Virtual Shift Method for Alignment Error Reduction of Holographic Diversity Interferometry

  山岸 信博, 岡本 淳, 野澤 仁, 後藤 優太, 小川 和久, 富田 章久

  電子情報通信学会, 20 Feb. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116(464) (464), 153 - 156, Japanese


• Characterization of multiplexing technique using virtual phase conjugation for high density holographic memory

  後藤 優太, 岡本 淳, 小川 和久, 富田 章久

  Lead, 電子情報通信学会, 20 Feb. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116(464) (464), 147 - 152, Japanese


• Spatial-mode conversion using random diffuser and spatial light modulator for reduction of modal crosstalk

  Koki Ishii, Atsushi Okamoto, Takehiro Tsuritani, Yuta Wakayama, Yuta Goto, Akihisa Tomita

  SPIE, 13 Feb. 2016, Next-Generation Optical Communication: Components, Sub-Systems, and Systems V


• Highly accurate spatial mode generation using spatial cross modulation method for mode division multiplexing

  Hiroki Sakuma, Atsushi Okamoto, Atsushi Shibukawa, Yuta Goto, Akihisa Tomita

  SPIE, 13 Feb. 2016, Next-Generation Optical Communication: Components, Sub-Systems, and Systems V


• Optical tomography using a random diffuser and digital phase conjugation

  Yuta Goto, Atsushi Okamoto, Atsushi Shibukawa, Akihisa Tomita, Kunihiro Sato

  Lead, SPIE, 05 Mar. 2015, Optical Tomography and Spectroscopy of Tissue XI


• Numerical analysis of optical tomographic imaging using virtual phase conjugation

  後藤 優太, 岡本 淳, 渋川 敦史

  Lead, 電子情報通信学会, 23 Feb. 2015, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 114(460) (460), 9 - 14, Japanese

  Technical report


• 学会発表を終えて(北海道支部,支部から,各支部学生員の感想と学生ブランチ活動,学生会報告)

  後藤 優太

  一般社団法人電子情報通信学会, 01 Feb. 2014, 電子情報通信学会誌, 97(2) (2), 149 - 149, Japanese

• Study on speed-up of a method for single pixel imaging with fixed patterns illumination

  Shotaro Ueno, Kouichi Nitta, Yuta Goto

  OPTICS & PHOTONICS International Congress (OPIC), Apr. 2026, English

  Oral presentation


• Ultrafast light scattering via coherent photonic time-stretch (proposal and progress report)

  Bahram Jalali, Yuta Goto, Takeshi Makino, Hideaki Furukawa, Naoya Wada

  Real-time Measurements, Rogue Phenomena, and Single-Shot Applications XI, Mar. 2026, SPIE


• 体積ホログラムを用いた空間モード多重器における挿入損失特性の評価

  後藤 優太, 品田 聡, 岡本 淳, 古川 英昭

  日本光学会年次学術講演会 (OPJ2025), Dec. 2025, Japanese

  Poster presentation


• シングルピクセルイメージングを用いた移動物体撮影における照射パターン数の削減

  上野 翔太郎, 後藤 優太, 仁田 功一

  日本光学会年次学術講演会 (OPJ2025), Dec. 2025, Japanese

  Oral presentation


• Generation of Hadamard mask pattern light using two-dimensional fiber array for single-pixel imaging

  Yuta Goto, Kouichi Nitta

  The 35th International Symposium on Imaging, Sensing, and Optical Memory (ISOM'25), Oct. 2025, English

  Poster presentation


• Image reconstruction for wavefront sensing based on ghost imaging and deep learning

  Kouich Nitta, Naohiro Kobayashi, Yuta Goto

  Environmental Remote Sensing in SPIE sensors+imaging 2025, Sep. 2025, English

  Poster presentation


• Device for optical transmission using wavefront control technology

  Yuta Goto

  第25回情報フォトニクス研究グループ研究会, Sep. 2025, Japanese

  [Invited]


• Fundamental consideration on the generation of Hadamard masks using 2D fiber arrays for single-pixel imaging

  Yuta Goto, Kouichi Nitta

  第86回応用物理学会秋季学術講演会, Sep. 2025, Japanese

  Oral presentation


• Wavefront reconstruction with single pixel Shack Hartmann sensor

  Kento Yamamoto, Naohiro Kobayash, Yuta Goto, Kouchi Nitta

  Information Photonics 2025, Sep. 2025, English

  Poster presentation


• A method for single pixel interferometric imaging

  Kouchi Nitta, Keita Matsubara, Yuta Goto

  Information Photonics 2025, Sep. 2025, English

  Oral presentation


• Fundamental investigation of LCOS-based flexible optical switch with wavefront matching method

  Yuta Goto, Satoshi Shinada, Yusuke Hirota, Hideaki Furukawa

  The 8th International Symposium on Extremely Advanced Transmission Technologies (EXAT 2025), May 2025, English, International conference

  Poster presentation


• Future Networks with Optical-Path Switching

  Yuta Goto

  The International Symposium on the Future of Optical Fiber Communications Systems (iFOCS) 2025, Feb. 2025, English

  [Invited]

  Invited oral presentation


• Inline Dual-Phase Modulation Method for Enhancing Compactness and Accuracy of LCOS-Based Wave Shaper

  Jianglian Wang, Atsushi Okamoto, Yuta Goto, Akihisa Tomi

  International Symposium on Imaging, Sensing, and Optical Memory (ISOM2024), Oct. 2024, English

  Oral presentation


• Pixel shift-based dual-phase modulation method for higher spatial resolution of LCOS wave shaper

  Jianglian Wang, Atsushi Okamoto, Yuta Goto, Akihisa Tomita

  THE 29th MICROOPTICS CONFERENCE (MOC2024), Sep. 2024, English

  Poster presentation


• 空間光変調器を用いた異種SDMファイバ間における空間チャネルスイッチ技術

  後藤優太, 品田聡, 廣田悠介, 古川英昭

  電子情報通信学会EXAT研究会2024年8月研究会, Aug. 2024, Japanese

  [Invited]

  Invited oral presentation


• 異種SDMファイバネットワークに向けた空間光変調器によるフレキシブル光スイッチにおける空間モード変換

  後藤 優太, 品田 聡, 廣田 悠介, 古川 英昭

  2024年 電子情報通信学会総合大会, Mar. 2024, Japanese

  Oral presentation


• LCOS Wave Shaper の高解像度化に向けたPixel Shift based Dual phase Modulation Method

  王 江漣, 岡本 淳, 後藤 優太, 富田 章久

  第59回 応用物理学会北海道支部 第20回 日本光学会北海道支部 合同学術講演会, Jan. 2024, Japanese

  Oral presentation


• Machine Learning-based Spectrum Resource Assignment and End-to-End Path Reconfiguration for Flexible Optical Networks.

  Yusuke Hirota, Yuta Goto, Hideaki Furukawa

  24th International Conference on Transparent Optical Networks(ICTON), 2024, IEEE

  [Invited]


• LCOS-based Flexible Optical Switch for Heterogeneous SDM Fiber Networks.

  Yuta Goto, Satoshi Shinada, Yusuke Hirota, Hideaki Furukawa

  24th International Conference on Transparent Optical Networks(ICTON), 2024, IEEE

  [Invited]


• Improvement of Phase Modulation Accuracy in LCOS-based Wave Shaper by Division of Modulation Region

  Wang Jianglian, Atsushi Okamoto, Nobuhiro Yamagishi, Yuta Goto, Akihisa Tomita

  International Symposium on Imaging, Sensing, and Optical Memory (ISOM2023), Nov. 2023, English

  Poster presentation


• Flexible Optical Switch using Spatial Light Modulator for Heterogeneous SDM Networks

  Yuta Goto

  CU-NICT Workshop on Photonic Network Research 2023, Nov. 2023, English

  Oral presentation


• 光ファイバアレイと体積ホログラムを用いた空間モード合波器の基礎実験

  後藤 優太, 品田 聡, 岡本 淳, 古川 英昭

  日本光学会年次学術講演会(OPJ), Nov. 2023


• Investigation of Spatial Mode Conversion in Flexible Optical Switch Using LCOS-Based Spatial Light Modulator

  Yuta Goto, Satoshi Shinada, Yusuke Hirota, Hideaki Furukawa

  2023 International Conference on Photonics in Switching and Computing (PSC), Sep. 2023, IEEE


• LCOS-based Flexible Optical Switch for Heterogeneous SDM Fiber Connection

  Yuta Goto, Satoshi Shinada, Yusuke Hirota, Hideaki Furukawa

  International Symposium on Extremely Advanced Transmission Technologies (EXAT2023), May 2023, English

  Poster presentation


• LCOS Wave Shaperにおける光伝送信号の高精度な補償に向けた波長領域の位相変調の高分解能化

  王江漣, 岡本淳, 山岸信博, 後藤優太, 富田章久

  第58回応用物理学会北海道支部/第19回日本光学会北海道支部 合同学術講演会, Jan. 2023, Japanese

  Oral presentation


• Mode-multiplexed Light Source using Angularly-Multiplexed Volume Holograms

  Satoshi Shinada, Yuta Goto, Hideaki Furukawa

  2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), Jul. 2022, IEEE


• Improvement in Diffraction Efficiency of Volume Holographic Mode De-Multiplexer with Dual Wavelength method by Using Thick Medium

  Y. Kuroda, A. Okamoto, A. Tomita, T. Takahata, S. Shinada, Y. Goto, N. Wada

  International Symposium on Imaging, Sensing, and Optical Memory (ISOM2021), Oct. 2021, English

  Oral presentation


• 体積ホログラムにおける媒質の厚さと回折効率との関係性

  黒田裕也, 岡本 淳, 林 穂高, 高畠武敏, 品田聡, 後藤優太, 和田尚也, 小川和久, 富田章久

  電気・情報関係学会北海道支部連合大会, Nov. 2020, Japanese

  Oral presentation


• Improving the reconstruction quality of spatial mode exchange technique by adjusting the diffusion angle of diffuser

  Z. Shuanglu, A. Okamoto, K. Ogawa, A. Tomita, T. Takahata, S. Shinada, Y. Goto, N. Wada

  International Symposium on Imaging, Sensing, and Optical Memory (ISOM2020), Nov. 2020, English

  Oral presentation


• Enhancement of Power Efficiency in Volume Holographic Mode (De-)multiplexer with Dual-Wavelength Method

  Yuta Goto, Atsushi Okamoto, Hotaka Hayashi, Satoshi Shinada, Taketoshi Takahata, Naoya Wada

  OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF), 2020, OSA


• 体積ホログラムの異波長記録再生法を用いた空間モード合分波器における回折効率の向上

  後藤 優太, 岡本 淳, 柴 泰純, 林 穂高, 品田 聡, 高畠 武敏, 和田 尚也

  日本光学会年次学術講演会(OPJ), Dec. 2019


• ExHAMを用いた宇宙環境曝露実験に向けたピエゾ素子評価

  田中宏明, 小木曽望, 田川雅人, 岩田稔, 藤垣元治, 後藤 優太, 池田忠繁, 石村康生

  第63回宇宙科学技術連合講演会, Nov. 2019, Japanese

  Oral presentation


• Fundamental Experiment for Displacement Measurement by Digital Holography with Spatially Divided Images

  Yuta Goto, Yuta Matsuna, Motoharu Fujigaki

  International Workshop on Holography and Related Technologies 2019 (IWH2019), Nov. 2019


• Spatial-Mode Control Technique using Angularly Multiplexed Volume Holograms

  Yuta Goto

  The 2019 International Symposium on Electrical and Electronics Engineering (ISEE2019), Oct. 2019


• ３光束干渉によるフリンジ投影におけるワークディスタンスの拡大手法

  後藤優太, 藤垣元治, 川原滉平

  非破壊検査総合シンポジウム, Jun. 2019, Japanese

  Oral presentation


• サンプリングモアレカメラを用いた変位計測における空気ゆらぎ成分の抽出

  中嶋友朗, 黒川覚, 後藤優太, 藤垣元治

  日本非破壊検査協会平成29年度第50回応力・ひずみ測定と強度評価シンポジウム, Jan. 2019

  Oral presentation


• Reduction of holographic scattering in volume holographic mode de-multiplexer for improvement of diffraction efficiency

  柴泰純, 岡本淳, 岡本淳, 林穂高, 小川和久, 富田章久, 高畠武敏, 高畠武敏, 後藤優太, 品田聡, 和田尚也

  光通信システムシンポジウムプログラム&講演予稿集(CD-ROM), 2019


• ExHAM による圧電素子の宇宙環境曝露試験計画

  田中, 宏明, 小木曽, 望, 池田, 忠繁, 石村, 康生, 藤垣, 元治, 後藤, 優太, 田川, 雅人, 岩田, 稔, 樋口, 健, 勝又, 暢久, 岩佐, 貴史, 坂本, 啓, 岸本, 直子, 波多, 英寛, 仙場, 淳彦

  第34回宇宙構造・材料シンポジウム, Dec. 2018, Japanese

  Oral presentation


• Projection of Depth Fringe Pattern for Measurement of Shape and Out-of-Plane Deformation

  Yuta Goto, Kohhei Kawahara, Motoharu Fujigaki

  19th International Symposium on Optomechatronic Technology (ISOT2018), Nov. 2018


• Phase Analysis Method in Fringe Projection with Intensity Distribution for Axial-Direction by Three-Beam Interferometry

  Yuta Goto, Kohhei Kawahara, Motoharu Fujigaki

  13th International Symposium on Advanced Science and Technology in Experimental Mechanics (ISEM2018), Oct. 2018


• インフラ構造物の変位計測における気象条件による計測精度の影響

  藤垣元治, 後藤優太, 中嶋友朗, 黒川覚

  第23回メカトロニクスワークショップ, Sep. 2018

  Oral presentation


• 3光束干渉による光軸方向に強度分布を持つ格子投影における位相シフト手法の検討

  後藤優太, 川原滉平, 藤垣元治

  2018年度精密工学会秋季大会学術講演会, Sep. 2018


• Out-of-plane displacement measurement method using depth direction pattern by three-beam interferometry

  KAWAHARA Kohhei, FUJIGAKI Motoharu, GOTO Yuta

  The Proceedings of the Materials and Mechanics Conference, 2018, Japanese, The Japan Society of Mechanical Engineers,

  In recent years, collapse of large structures has occurred because of aging. Displacement measurement is important for maintenance. There are various methods in the vertical and horizontal directions for displacement measurement of distant objects using optical method. However, there are few methods to measure displacement for a camera direction. In this paper, the authors propose and demonstrate a method to generate a fringe pattern along the depth direction using three-beam interferometry in combination with fringe power analysis. In three-beam interferometry, the fringe pattern along the depth direction appears by superimposing each two-beam interference fringe. Therefore, the power distribution of the fringe pattern appears along the depth direction. This method enables us to directly obtain the three-dimensional (3D) shape and displacement using the fringe pattern along the depth direction. Our method intended for wide application with 3D shape measurements and out-of-plane displacement measurements for the inspection and maintenance of large constructions. As the first step of developing a device for 3D shape and displacement measurement, in this paper, simulation and an experiment were used to confirm that depth directional patterns appeared.


• Compensation of optical aberration for improvement of image quality in virtual-phase-conjugation based optical tomography

  Yuta Goto, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita

  2017 22nd Microoptics Conference (MOC), Nov. 2017, IEEE


• Multiplexing and Demultiplexing of Digital Images using Virtual Phase Conjugation for High-Density Holographic Data Storage

  Yuta. Goto, Atsushi. Okamoto, Kazuhisa. Ogawa, Akihisa. Tomita

  International Workshop on Holography and related technologies 2017 (IWH2017), Nov. 2017


• 仮想位相共役を用いたシングルョット光断層撮影法によるプレパラート試料の3次元計測

  後藤 優太, 岡本 淳, 渋川 敦史, 小川 和久, 富田 章久

  日本光学会年次学術講演会(OPJ), Nov. 2017


• 体積ホログラムを用いたモード分離変換器のランダム拡散板による変換精度向上手法

  水川 郁弥, 岡本 淳, 後藤 優太, 清水 新平, 小川 和久, 富田 章久

  平成29年度電気・情報関係学会北海道支部連合大会, Oct. 2017

  Oral presentation


• Improvement of measurement accuracy by hologram-encoded window function in virtual-phase-conjugation based optical tomography

  Yuta Goto, Atsushi Okamoto, Masanori Takabayashi, Akihisa Tomita

  International Symposium on Imaging, Sensing, and Optical Memory 2017 (ISOM2017), Oct. 2017


• 仮想位相共役を用いたシングルショット光断層撮影によるカエル血球の3次元反射率の測定

  後藤 優太, 岡本 淳, 小川 和久, 富田 章久

  平成29年度電気・情報関係学会北海道支部連合大会, Oct. 2017


• 参照光不要型低コヒーレンスディジタルホログラフィによるモード間遅延差の計測

  星野 翔吾, 岡本 淳, 後藤 優太, 富田 章久, 若山 雄太, 釣谷 剛宏

  2017年電子情報通信学会ソサイエティ大会, Sep. 2017

  Oral presentation


• Depth-resolution characterization of optical tomography using virtual phase conjugation

  Yuta Goto, Atsushi Okamoto, Atsushi Shibukawa, Kazuhisa Ogawa, Akihisa Tomita, Kunihiro Sato

  7th EOS Topical Meeting on Optical Microsystems (OµS’17), Sep. 2017


• 体積ホログラムによる数モードファイバ間のadd/drop機能の検討

  水川 郁弥, 岡本 淳, 後藤 優太, 清水 新平, 小川 和久, 富田 章久

  電子情報通信学会光通信システム研究会 第30回光通信システムシンポジウム, Dec. 2016

  Oral presentation


• 高精度な波面計測に向けた外部参照光不要型ホログラフィックダイバーシティ干渉法

  後藤優太, 岡本淳, 若山雄太, 小川和久, 富田章久, 釣谷剛宏

  電子情報通信学会光通信システム研究会 第30回光通信システムシンポジウム, Dec. 2016


• 空間光変調器を用いた空間モード変換におけるランダム拡散板によるモード間クロストーク低減の実験

  石井 公貴, 岡本 淳, 後藤 優太, 富田 章久

  平成28 年度電気・情報関係学会北海道支部連合大会, Nov. 2016

  Oral presentation


• Multi-Layered Holographic Memory using Virtual Phase Conjugation

  Yuta Goto, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita, Kunihiro Sato

  International Workshop on Holography and related technologies (IWH2016), Nov. 2016


• 仮想多重化技術を用いた多層ホログラフィックメモリにおける記録特性評価

  後藤 優太, 岡本 淳, 小川 和久, 富田 章久

  日本光学会年次学術講演会(OPJ), Nov. 2016


• Spatial Mode Separation and Interconversion Using Volume Hologram

  Fumiya Mizukawa, Atsushi Okamoto, Yuta Goto, Shimpei Shimizu, Satoshi Honma, Kazuhisa Ogawa, Akihisa Tomita

  International Symposium on Imaging, Sensing, and Optical Memory 2016 (ISOM 2016), Oct. 2016

  Oral presentation


• Multiplexing Technique using Virtual Phase Conjugation for High-Density Holographic Data Storage Systems

  Yuta Goto, Atsushi Okamoto, Masanori Takabayashi, Akihisa Tomita

  International Symposium on Optical Memory (ISOM2016), Oct. 2016


• 空間モード変換に向けたインライン型デュアルフェーズモジュレーション法の提案

  佐久間 大樹, 岡本 淳, 後藤 優太, 小川 和久, 釣谷 剛宏, 若山 雄太, 富田 章久

  2016年電子情報通信学会ソサイエティ大会, Sep. 2016

  Oral presentation


• ホログラフィック記録における仮想多重化技術の提案

  後藤 優太, 岡本 淳, 富田 章久

  平成28年度電子情報通信学会ソサイエティ大会, Sep. 2016


• Experiment on depth-measurement of cover glass by virtual phase conjugation for optical tomography

  Yuta Goto, Atsushi Okamoto, Atsushi Shibukawa, Kazuhisa Ogawa, Akihisa Tomita, Kunihiro Sato

  10th International Conference on Optics-photonics Design and Fabrication (ODF2016), Mar. 2016


• プログレッシブ位相共役技術による空間モードの選択的抽出

  佐久間大樹, 岡本淳, 小田友和, 後藤優太, 野澤仁, 富田章久

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2016


• 仮想位相共役技術を用いた高速光断層撮影の基礎実験

  後藤 優太, 岡本 淳, 渋川 敦史, 小川 和久, 富田 章久

  第51回応用物理学会北海道支部学術講演会, Jan. 2016


• High-resolution and simultaneous measurement along the depth direction using virtual phase conjugation for optical tomography

  Yuta Goto, Atsushi Okamoto, Atsushi Shibukawa, Akihisa Tomita, Masanori Takabayashi

  2015 20th Microoptics Conference (MOC), Oct. 2015, IEEE


• Experiment on three-dimensional display using spatial cross modulation method with an optical random diffuser

  H. Sakuma, A. Okamoto, A. Shibukawa, H. Funakoshi, Y. Goto, Y. Kan, A. Tomita

  2015 20th Microoptics Conference (MOC), Oct. 2015, IEEE


• Improvement of measurement-speed by virtual optical-system for confocal laser scanning microscope

  Yuta Goto, Atsushi Okamoto, Masataka Toda, Yasuyuki Kuno, Akihisa Tomita

  2015 20th Microoptics Conference (MOC), Oct. 2015, IEEE


• B-10-33 Reduction of Modal Crosstalk using Random Diffuser for Spatial Mode Conversion with Spatial Light Modulator

  Ishii Koki, Okamoto Atsushi, Tsuritani Takehiro, Wakayama Yuta, Goto Yuta, Tomita Akihisa

  Proceedings of the Society Conference of IEICE, Aug. 2015, Japanese, The Institute of Electronics, Information and Communication Engineers


• 空間スペクトル拡散光のデジタル位相共役再生を用いた光断層撮影の基礎実験

  後藤優太, 岡本淳, 渋川敦史, 富田章久

  日本光学会年次学術講演会(OPJ), Nov. 2014


• 空間スペクトル拡散光のデジタル位相共役再生を用いた光断層撮影技術による特定層情報の抽出

  後藤優太, 岡本 淳, 渋川敦史, 富田 章久

  平成26年度電気・情報関係学会北海道支部連合大会, Oct. 2014


• 空間スペクトル拡散光のデジタル位相共役再生を用いた光断層撮影技術

  後藤優太, 岡本淳, 渋川敦史, 富田章久

  日本光学会年次学術講演会(OPJ), Nov. 2013


• 空間スペクトル拡散光のデジタル位相共役再生による光断層撮影技術

  後藤優太, 岡本 淳, 渋川敦史, 富田 章久

  平成25年度電気・情報関係学会北海道支部連合大会, Oct. 2013

• Optical Society of Japan (OSJ)


• Institute of Electrical and Electronics Engineers (IEEE)


• OPTICA


• 応用物理学会


• 電子情報通信学会

• 波長分割多重に基づく並列光線形演算基盤の研究

  後藤 優太

  公益財団法人 川西記念新明和教育財団, 科学技術研究助成金支給事業, Jun. 2026, Principal investigator


• モード選択スイッチの実現に向けた周波数領域光MIMOの提案

  後藤 優太, 岡本 淳

  日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 国立研究開発法人情報通信研究機構, 01 Apr. 2022 - 31 Mar. 2025


• Proposal of ultra-compact and vibration-resistant three-dimensional displacement distribution measurement method by single-injection multi-direction imaging

  Goto Yuta

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Research Activity Start-up, 24 Aug. 2018 - 31 Mar. 2020

  First, it was confirmed that reconstructed images in different viewpoints was obtained by spatially dividing the hologram when measuring the dice. Next, the aluminum plate consisting of the movable part and the fixed part was measured. From the results, it was confirmed that the phase was changed by the displacement of the object. Finally, the phase difference was acquired by slightly displacing the movable part of the aluminum plate in the x, y, and z directions. From the results, it confirmed that sensitivity vectors from multiple directions can be obtained by a single camera. These results was presented at International Workshop on Holography and Related Technologies 2019 (IWH2019).


• 高分解能かつ高速な３次元測定の実現に向けた新規光断層撮影法の開発と応用

  後藤 優太

  日本学術振興会, 科学研究費助成事業 特別研究員奨励費, 特別研究員奨励費, 北海道大学, 26 Apr. 2017 - 31 Mar. 2019

  本研究の目的は，「高い深さ分解能」及び，「3次元像の一括取得による超高速計測」を実現する仮想位相共役を用いた光断層撮影法(VPC-OT: Virtual Phase Conjugation based Optical Tomography)において「生体への応用に向けた性能向上」と，「実際に生体に応用する場合の動作実証・実用的なシステムの構築」を行い，皮膚・血管等の表層計測への応用の可能性を示すことにある．本目的の達成に向けて，本年度は以下の課題に取り組んだ． まず，伝達関数による高速計算手法を用いることによって仮想レンズのシフトにおける計算時間が高速化できること示した．また，NVIDIA社提供のGPU計算用ライブラリであるCompute Unified Device Architecture (CUDA)を用いた超並列計算を導入した．これらを組み合わせて，これまでの光波伝搬計算をそのまま用いる手法と比べ，実験において約14倍の高速化が可能であることを示した． 次に，位相分布（屈折率分布）の断層計測及び再生像の高画質化に向けて，窓関数を用いた計測面の強度分布の制御手法について検討した．カエル血球が封入されたプレパラート試料，及び分解能テストパターンを計測し，従来OCTに対して，VPC-OTが約2倍の深さ分解能で3次元強度・位相イメージングが可能であることを実験的に示した． 加えて，当初の研究目的を超えた内容として，仮想位相共役を用いたホロフラフィックメモリの多重記録方式を新たに提案し，従来の多重記録方式と比べて記録密度が約1.9倍向上することを解析的に示した．

• DETECTION APPARATUS

  Bahram Jalali, Yuta Goto, Takeshi Makino, Takahiro Hashimoto, Naoya Wada, Hideaki Furukawa

  19/076012, 11 Mar. 2025, National Institute of Information and Communications Technology

  Patent right


• モード分散補償用情報の取得方法及び装置

  後藤 優太, 品田 聡, 岡本 淳

  特願2022-013280, 31 Jan. 2022, 国立研究開発法人情報通信研究機構, 特開2023-111427, 10 Aug. 2023

  Patent right

  IRI


• 計測対象物の面外変位分布や3次元形状を計測する方法とその装置

  藤垣 元治, 後藤 優太, 川原 滉平

  特願2019-009215, 23 Jan. 2019, 国立大学法人福井大学, 特開2020-118533, 06 Aug. 2020

  Patent right

  IRI


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