Basic Information

Faculty

• Faculty of Engineering

Email Address

• Email Address

  shiraki.ryuta.4hkyoto-u.ac.jp

Professional Memberships

• To Present

  SPIE
• To Present

  IEICE
• To Present

  IEEE Photonics society

Academic Degree

• 25 Mar. 2020

  名古屋大学修士（工学）
• 27 Mar. 2023

  名古屋大学博士（工学）

Academic Resume (Undergraduate School/Majors)

• 名古屋大学, 工学部電気電子情報工学科, 卒業

Research History

• From Apr. 2023, To Present

  Kyoto University, Graduate School of Informatics Department of Communications and Computer Engineering, Assistant professor

ID,URL

• ORCID ID

  0000-0002-7991-4109

• J-Global ID

  202201013451664978

• Researcher number

  20969216

researchmap URL

• https://researchmap.jp/r_shiraki

Research

Research Topics, Overview of the research

• Research Topics

  Digital Signal Processing and Network Resource Allocation for Large-Capacity Photonic Networks

• Overview of the research

  To realize photonic networks that flexibly offer large-capacity communication services, we develop an intelligent networking method that exploits multidimensional big data. We tackle this problem with two key technologies; the optical monitoring technology and optical controlling technology. First, the informative features for controlling networks are extracted from the various data obtained by advanced optical orchestrating technologies. Then, the photonic network is intellectually controlled by using the sophisticated machine learning algorithms under the constraints specific to the photonic network.

Research Interests

• 光ファイバ通信
• Photonic network
• 機械学習

Research Areas

• Informatics, Information networks, 光ネットワーク

Papers

• Performance evaluation of dynamic fiber-granular routing networks with next-generation optical paths

  Takeshi Matsuo; Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  Optics InfoBase Conference Papers, 2021

  
• Dynamically Controlled Flexible-Grid Networks Based on Semi-Flexible Spectrum Assignment and Network-State-Value Evaluation

  Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-Ichi Sato

  2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings, 01 Mar. 2020

  
• Demonstration of quasi-Nyquist WDM networks using widely deployed wavelength-selective switches

  Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-Ichi Sato

  Optics InfoBase Conference Papers, 2019

  
• Multiple-Backup Resource Allocation Model for Virtual Machines With Probabilistic Protection

  Kento Yokouchi; Ryuta Shiraki; Eiji Oki

  IEEE Transactions on Network and Service Management, 10 Jul. 2024, Peer-reviewed

  
• Demonstration of spectrum narrowing mitigation based on recurrent neural networks for ultra-dense WDM networks

  Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  Optics Letters, 15 Feb. 2024, Peer-reviewed, Lead author

  
• Demodulation Framework Based on Machine Learning for Unrepeated Transmission Systems

  Ryuta SHIRAKI; Yojiro MORI; Hiroshi HASEGAWA

  IEICE Transactions on Communications, 01 Jan. 2024, Peer-reviewed, Lead author

  
• Architecture and performance evaluation of fiber-granularity routing networks with supplemental grooming by wavelength conversion

  Takeshi Matsuo; Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  Journal of Optical Communications and Networking, 01 Aug. 2023, Peer-reviewed

  
• RNN-based demodulation framework for spectrum narrowing in ultra-dense WDM networks

  Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  IEEE Photonics Technology Letters, 15 Sep. 2022, Peer-reviewed

  
• Design and control of highly spectrally efficient photonic networks enabled by fiber-granular routing on overlaid ring-shaped topologies

  Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-Ichi Sato; Paolo Monti

  Journal of Optical Communications and Networking, 01 Nov. 2021, Peer-reviewed

  
• Wavelength-division demultiplexing enhanced by silicon-photonic tunable filters in ultra-wideband optical-path networks

  Yojiro Mori; Eiji Honda; Ryuta Shiraki; Keijiro Suzuki; Hiroyuki Matsuura; Hitoshi Kawashima; Shu Namiki; Kazuhiro Ikeda; Ken-ichi Sato

  Journal of Lightwave Technology, 01 Mar. 2020, Peer-reviewed

  
• Design and evaluation of quasi-Nyquist WDM networks utilizing widely deployed wavelength-selective switches

  Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato

  Optics Express, 24 Jun. 2019, Peer-reviewed

  

Presentations

• Emerging machine learning technologies for photonic networks

  Ryuta Shiraki

  IEEE Photonics in Switching and Computing, 15 Jul. 2024, Invited

  
• Analytical Model for Assessing Unavailability in Middleboxes with Multiple Backup Servers under Shared Protection

  Naohide Wakuda; Ryuta Shiraki; Eiji Oki

  IEEE International Conference on the Design of Reliable Communication Networks, 06 May 2024

  
• Robustness of digital subcarrier systems to laser phase noise and chromatic dispersion

  Kazato Satake, Yojiro Mori, Ryuta Shiraki, Hiroshi Hasegawa

  SPIE Photonics West, 01 Feb. 2024

  
• クラウドにおける仮想マシンの確率的保護による予備資源割当モデルの性能

  横内 健人; 白木 隆太; 大木 英司

  電子情報通信学会 ネットワークシステム研究会, 25 Jan. 2024

  
• 超高密度波長分割多重ネットワークにおける光パス設定モデル

  山田 航平; 白木 隆太; 大木 英司

  電子情報通信学会フォトニックネットワーク研究会, 23 Jan. 2024

  
• フォトニックネットワークのための機械学習

  白木隆太

  電子情報通信学会フォトニックネットワーク研究会, 22 Jan. 2024, Invited

  
• Neural Network に基づくディジタル信号処理 －大容量光ファイバ通信システムの実現に向けて－

  落合 匠郎; 樋口 怜治; 久野 拓真; 白木 隆太; 森 洋二郎; 長谷川 浩

  超知性ネットワーキングに関する分野横断型研究会, Oct. 2023

  
• Transceiver-impairment Mitigation Enabled by Adaptive Symbol Decision with Neural Network

  Takuro Ochiai; Reiji Higuchi; Takuma Kuno; Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  IEEE Photonics in Switching and Computing, 26 Sep. 2023

  
• ディジタルサブキャリア伝送方式におけるレーザ位相雑音と波長分散の相互作用

  佐竹 風人; 森 洋二郎; 白木 隆太; 長谷川 浩

  電子情報通信学会フォトニックネットワーク研究会, 30 Aug. 2023

  
• ディジタルサブキャリア多重信号の伝送特性解析

  佐竹 風人; 森 洋二郎; 白木 隆太; 長谷川 浩

  電子情報通信学会フォトニックネットワーク研究会 シンポジウム, 28 Aug. 2023

  
• Neural Networkを用いた量子化雑音とIQ不均衡の同時補償技術

  落合 匠郎; 樋口 怜治; 久野 拓真; 白木 隆太; 森 洋二郎; 長谷川浩

  電子情報通信学会ソサイエティ大会, Sep. 2023

  
• ディジタルサブキャリア伝送方式における波長分散とレーザ位相雑音の相互作用

  佐竹 風人; 森 洋二郎; 白木 隆太; 長谷川 浩

  電子情報通信学会ソサイエティ大会, Sep. 2023

  
• 光パス収容設計技術の開発

  クルザド ケンジ; 白木 隆太; 森 洋二郎; 長谷川 浩

  電気・電子・情報関係学会東海支部連合大会, Aug. 2023

  
• 短距離コヒーレント光通信に適する変復調方式

  樋口 怜治; 森 洋二郎; 白木 隆太; 長谷川 浩

  電気・電子・情報関係学会東海支部連合大会, Aug. 2023

  
• 回帰型ニューラルネットワークを用いたスペクトル狭窄効果抑制法

  白木 隆太; 森 洋二郎; 長谷川 浩

  電子情報通信学会フォトニックネットワーク研究会, Jun. 2023

  
• Low-cost coherent transceivers with quantization noise mitigation function enabled by neural networks

  Takuro Ochiai; Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  Optica Advanced Photonics Congress (APC), 12 Jul. 2023

  
• Adaptive joint pre-/post-equalization of spectrum narrowing caused by cascaded photonic nodes

  Yoshiaki Ishikawa; Ryuta Shiraki; Yojiro Mori; Hiroshi Hasegawa

  Optica Advanced Photonics Congress (APC), 11 Jul. 2023

  
• Modulation and demodulation method robust against laser phase noise

  Reiji Higuchi, Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

  Conference on Lasers and Electro-Optic in Europe (CLEO-EU), 01 Jun. 2023

  
• [Invited] Optical path management based on machine learning in optical networks

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

  Photonics West, 01 Feb. 2023, Invited

  
• Reinforcement-learning-based network design and control with stepwise reward variation and link-adjacency embedding

  Kenji Cruzado, Ryuta Shiraki, Yojiro Mori, Takafumi Tanaka, Katsuaki Higashimori, Fumikazu Inuzuka, Takuya Ohara, Hiroshi Hasegawa

  European Conference on Optical Communication (ECOC), 01 Sep. 2022

  
• Constellation-shaped 64QAM robust against phase noise in intra-datacenter networks

  Jun Sakano, Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

  Photonics in Switching and Computing (PSC), 01 Jul. 2022

  
• Design and dynamic control of fiber-granular routing networks with next-generation optical paths

  Takeshi, Matsuo, Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

  Optical Fiber Communication Conference (OFC), 01 Mar. 2022

  
• Performance evaluation of dynamic fiber-granular routing networks with next-generation optical paths

  Takeshi, Matsuo, Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

  Optoelectronic and Communications Conference (OECC), 01 Jul. 2021

  
• Dynamically controlled flexible-grid networks based on semi-flexible spectrum assignment and network-state-value evaluation

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

  Optical Fiber Communication Conference (OFC), 01 Mar. 2020

  
• Highly spectrally efficient metro networks that adopt fiber-level granular routing on overlaid line-/ring-shaped virtual topologies

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Paolo Monti

  Photonics West, 01 Feb. 2020

  
• Dynamic control of transparent optical networks with adaptive state-value assessment enabled by reinforcement learning

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

  International Conference on Transparent Optical Network (ICTON), 01 Jul. 2019

  
• Quasi-Nyquist WDM network using widely deployed wavelength-selective switches

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

  Extremely Advanced Transmission Technologies (EXAT), 01 May 2019

  
• Demonstration of quasi-Nyquist WDM networks using widely deployed wavelength-selective switches

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

  Optical Fiber Communication Conference (OFC), 01 Mar. 2019

  
• Novel network architecture enabling quasi-Nyquist wavelength-division multiplexing

  Ryuta Shiraki, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

  Photonics West, 01 Feb. 2019

  
• Architecture and design of quasi-Nyquist WDM networks with flexible grid granular switching

  Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

  Photonics in Switching and Computing (PSC), 01 Sep. 2018

  
• Fast optical circuit switch using monolithically integrated silicon-photonic space switch and wavelength-tuneable filter

  Yojiro Mori, Mungun-Erdene Ganbold, Ryuta Shiraki, Keijiro Suzuki, Hiroyuki Matsuura, Hitoshi Kawashima, Shu Namiki, Kazuhiro Ikeda, Ken-ichi Sato

  European Conference on Optical Communication (ECOC), 01 Sep. 2018

  

Awards

• 01 Apr. 2020

  IEEE Nagoya Section Conference Presentation Award
• 01 Mar. 2020

  テレコムシステム技術学生賞（電気通信普及財団）
• 12 Jul. 2019

  Best Student Oral Presentation Award（University of Angers）

External funds: Kakenhi

• 大容量光ファイバ通信網制御の数理最適化

  Grant-in-Aid for Research Activity Start-up

  1001:Information science, computer engineering, and related fields

  Kyoto University

  白木 隆太

  From 31 Aug. 2023, To 31 Mar. 2025, Granted

  光ファイバ通信網;数理最適化

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K19976/
• 光ネットワーク資源の極限利用を実現するマージン最適化

  Grant-in-Aid for Early-Career Scientists

  Basic Section 21020:Communication and network engineering-related

  Kyoto University

  白木 隆太

  From 01 Apr. 2024, To 31 Mar. 2027, Granted

  光ファイバ通信網

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24K17276/

External funds: others

• 超多次元情報を活用する知的フォトニックネットワーク

  国立研究開発法人科学技術振興機構, 戦略的創造研究推進事業（ACT-X）

  From 01 Oct. 2022, To 31 Mar. 2025

  白木　隆太

Education

Teaching subject(s)

• From 01 Apr. 2024, To 31 Mar. 2025

  Exercise of Electric and Electronic Circuits

  6118, Spring, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Exercise of Electric and Electronic Circuits

  6118, Spring, Faculty of Engineering, 2

Student achievements: Awards

• 超知性ネットワーキングに関する分野横断型研究会 優秀ポスター発表賞

  落合 匠郎, 電子情報通信学会, 30 Oct. 2023
• Student Paper Award

  Takuro Ochiai, Optica Advanced Photonics Congress 2023, 2307
• Student Paper Award

  Yoshiaki Ishikawa, Optica Advanced Photonics Congress 2023, 13 Jul. 2023