発表論文

2025

T. Tani, D. Soma, R. Otowa, Y. Matsuno, K. Nakada, K. Komatsu, Y. Hotta, T. Sasaki, R. Tahara, S. Beppu, K. Maeda , T. Izumi, Y. ‪Wakayama, N. Yoshikane, T. Tsuritani, Y. Sakurai, R. Sugizaki and M. Jinno, “Demonstration of 4-Core/16-Core Fiber Heterogeneous Spatial Channel Network Comprising 19-Core Fiber Core Selective Switch-Based Spatial Gateway, 4-Core EDFAs, and 19-Core EDFAs,” in Optical Fiber Communication Conference (OFC) 2025, M3F.2, 2025.

K. Komatsu, S. Beppu, D. Soma, Y. Wakayama, N. Yoshikane and M.Jinno, T. Tsuritani, “Core-level Routing in Long-haul MCF Transmission System with FIFO-less Multicore EDFA and Spatial Cross-connect,” in Optical Fiber Communication Conference (OFC) 2025, M3F.1, 2025.

2024

M. Jinno, R. Tahara, K. Nakada, T. Izumi and K. Matsumoto, “Polarity management of multicore fiber-based optical devices in unidirectional and bidirectional spatial channel networks,” in Journal of Optical Communications and Networking. Vol. 16, H53-H65 (2024).

T. Izumi, R. Otowa, Y. Matsuno, K. Nakada, Y. Hotta, T. Sasaki, R. Tahara, K. Maeda, Y. Sakurai, R. Sugizaki and M. Jinno, “Demonstration of Spatial- and Wavelength-Channel Routing with Polarity Management Using Spatial Cross-Connects Based on Hermetically Sealed 19-CF Core Selective Switch Modules and Cladding-Pumped 19-CF EDFA Modules,” in European Conference on Optical Communication (ECOC) 2024, Th2E.1, 2024.

H. Takeshita, Y. Shimomura and W. Maeda, “Power Conversion Efficiency Improvement of Single Pump LD Multiband Multicore EDFA by Using Bandpass Pump Splitter,” in European Conference on Optical Communication (ECOC) 2024, W2A.11, 2024.

K. Komatsu, S. Beppu, D. Soma, Y. Wakayama, N. Yoshikane, T. Tsuritani, D. Sasaki, T. Okamoto, Michael Lorenz, Qiulin Ma, Martin Böttcher, Ansgar Meissner, Lidia Galdino, Kevin Bennett and Sergejs Makovejs, “126-Tb/s 2-Core Fibre Transmission over 114.6 km × 5 Spans with Ultra-Low-Loss Fibre Bundle Fan-in/Fan-out,” in European Conference on Optical Communication (ECOC) 2024, W3B.5, 2024.

D. Soma, T. Kato, S. Beppu, Daniel J. Elson, H. Muranaka, H. Irie, S. Okada, Y. Tanaka, Y. Wakayama, N. Yoshikane, T. Hoshida and T. Tsuritani, “Multiband DWDM Transmission Using a Deployed Fibre-Optic Cable,” in European Conference on Optical Communication (ECOC) 2024, M2B.3, 2024.

Daniel J. Elson, S. Beppu, D. Soma, N. Yoshikane, T. Tsuritani and Y. Wakayama, “An Ideal Pairing: Multicore Fibres and Coherent O-band DWDM Transmission Supported by BDFA,” in European Conference on Optical Communication (ECOC) 2024, M3B.5, 2024.

Daniel J. Elson and Y. Wakayama, “Coherent O band WDM Transmission Using Bismuth Doped Fiber Amplifiers,” in CLEO PacificRIM 2024, Mo4K-2, 2024.

S. Beppu and D. Soma, “Long-haul MIMO transmission with a coupled core MCF,” in Advanced Photonics Congress – Signal Processing in Photonic Communications (SPPCom) 2024.

Y. Wakayama, Daniel J. Elson, Filippos Balasis, S. Beppu, N. Yoshikane and T. Tsuritani, “Unlocking the Potential of Ultrawide O-Band Coherent DWDM Fiber Transmission,” in Advanced Photonics Congress – Signal Processing in Photonic Communications (SPPCom) 2024.

H. Takeshita, “Amplification technology for spatial division multiplexing signals transmitted using multicore fibers,” in The Institution of Engineering and Technology (IET), 2024.

Daniel J. Elson, S. Beppu, D. Soma, N. Yoshikane, T. Tsuritani and Y. Wakayama, “High aggregate bandwidth transmission over multicore fibre enabled by O-band,” in The IEEE Summer Topicals Meeting 2024, MF3.2, 2024.

Y. Wakayama, D. Soma, S. Beppu, Daniel J. Elson, S. Sumita, N. Yoshikane and T. Tsuritani, “Multiband transmission trials over deployed multicore fiber cables,” in The IEEE Summer Topicals Meeting 2024, M2B.3, 2024.

M. Jinno, “Spatial Channel Networks and Their Enabling Multicore-Fiber-Based Devices,” in The IEEE Summer Topicals Meeting 2024, WF4.2, 2024.

M. Kitada, R. Tahara, K. Nakada, Y. Uchida, K. Matsumoto and M. Jinno, “Effect of Inter-core Backward-Reflected Crosstalk in Core Selective Switch on Bidirectional Spatial Channel Networks,” in Opto-Electronics and Communications Conference (OECC)2024, WeC5, 2024.

R. Sasaki, K. Matsumoto and M. Jinno, “Comparison of Intra-node Fiber Wiring Counts in Hierarchical SDM/WDM Nodes in Spatial Channel,” in Opto-Electronics and Communications Conference (OECC)2024, WeC5, 2024.

Y. Shimomura, H. Takeshita and K. Hosokawa, “Extension of repeated MCF transmission distance bidirectional signal assignment of MC-EDFA,” in Opto-Electronics and Communications Conference (OECC)2024, TuC1, 2024.

K. Maeda, S. Takasaka, R. Sugizaki and M. Takahashi, “Fully Integrated Cladding Pumped 19-core EDFA,” in Opto-Electronics and Communications Conference (OECC)2024, MoB3, 2024.

T. Izumi, K. Nakada, Y. Uchida, Y. Sakurai, Y. Matsuno and M. Jinno, “Core Selective Switch Using Low Inter-Core Crosstalk and Low Multipath Interference 19-Core,” in Opto-Electronics and Communications Conference (OECC)2024, MoB3, 2024.

K. Matsumoto and M. Jinno, “Architecture and planning of a regional multicore fiber submarine network comprising core selective switch-based branching units, ” in Journal of Lightwave Technology, vol. 16, no. 5, pp. 613-623, May 2024.

Y. Matsuno, R. Sugizaki, and M. Takahashi, “Standard Coating Diameter Uncoupled 19-Core Multicore Fiber with Highest Core Density for Optical Wiring,” in Optical Fiber Communication Conference (OFC) 2024, W3J.6, 2024.

H. Takeshita, Y. Shimomura and K. Hosokawa, “Transmission capacity expansion using bidirectional multicore EDFA under bidirectional signal assignment,” in Optical Fiber Communication Conference (OFC) 2024, W4D.4, 2024.

H. Takeshita, “Unidirectional and bidirectional MCF transmission, single-core and multi-core amplifiers,” in Optical Fiber Communication Conference (OFC) 2024, Tu2G.5, 2024.

D. Soma, T. Kato, S. Beppu, Daniel J. Elson, H. Muranaka, H. Irie, S. Okada , Y. Tanaka, Y. Wakayama, N. Yoshikane, T. Hoshida and T. Tsuritani, “U-Band Transmission Characteristics over Standard Cladding Step-Index 4-Core Fiber Span,” in Optical Fiber Communication Conference (OFC) 2024, W3J.2, 2024.

Y. Kuno, M. Kawasugi, Y. Hotta, R. Otowa, D. Kaneko,and Yasuki Sakurai, “Multi-Core Fiber Switch technology for SDM Network,” in SPIE Photonics West, 12894-16, 2024.

2023

K. Matsumoto, K. Miura, and M. Jinno, “Sort order scheme for assigning local traffic demands to spatial channel networks,” in 2023 International Conference on Emerging Technologies for Communications(ICETC)2023, O2-3, 2023.

K. Nakada, H. Takeshita, Y. Kuno, Y. Matsuno,I. Urashima, Y. Shimomura, Y. Hotta, T. Sasaki, Y. Uchida, K. Hosokawa, R. Otowa,R. Tahara, Emmanuel Le Taillandier de Gabory, Y. Sakurai, R. Sugizaki,and M. Jinno, “Bidirectional single-multicore-fiber spatial channel network based on a spatial cross-connect and multicore EDFA that efficiently accommodates asymmetric data traffic,” in Journal of Optical Communications and Networking, vol. 15, no. 11, November, 2023.

D. Soma, T. Kato, S. Beppu, Daniel J. Elson, H. Muranaka, H. Irie, S. Okada, Y. Tanaka, Y. Wakayama , N. Yoshikane, T. Hoshida and T. Tsuritani, “25-THz O+S+C+L+U-Band Digital Coherent DWDM Transmission Using a Deployed Fibre-Optic Cable,” in European Conference on Optical Communication (ECOC)2023, Th.C.2.2, 2023.

Y. Wakayama, H. Takahashi, N. Yoshikane and T. Tsuritani, “Core-selective Variable-ratio Coupler for Multicore Fiber Applications,” in European Conference on Optical Communication (ECOC)2023, We.C.3.4, 2023.

S. Beppu, D. Soma, Y. Wakayama and N. Yoshikane, “Investigation of MDL Accumulation in Recirculating Loop Systems Using Coupled-Core Multicore Fibres with a Quasi Mode Scramble,” in European Conference on Optical Communication (ECOC)2023, Tu.B.2.5, 2023.

D. Soma, S. Beppu, Y. Wakayama, N. Yoshikane and T. Tsuritani, “C+L-Band 2,160 km Bidirectional Transmission using Three Vendor-Installed 4-Core Fibre Cables,” in European Conference on Optical Communication (ECOC)2023, Tu.B.2.2, 2023.

S. Beppu and D. Soma, “Progress and Challenges of Coupled Core MCF Transmission,” in European Conference on Optical Communication (ECOC) 2023, Tu.B.2.1, 2023.

K. Iwasaki, K. Kito, Y. Horikawa, Y. Wakayama, N. Yoshikane, T. Tsuritani and T. Kato, “Low-crosstalk Compact Optical Isolator for 4-core Fiber,” in European Conference on Optical Communication (ECOC) 2023, P13, 2023.

H. Takeshita, Y.Shimomura and K. Hosokawa, “Demonstration of C+L 8.7-THz 7-Core Multicore EDFA with a Single Pump Laser Diode Using Pump Recycling Technology,” in European Conference on Optical Communication (ECOC) 2023, We.C.3.2, 2023.

R. Tahara, Y. Uchida, K. Nakada, M. Kanenobu and M. Jinno, “Submarine SDM Branching Unit with Integrated All-Port Flipped Multicore Fiber Splitters and Integrated Core Selective Switches,” in European Conference on Optical Communication (ECOC) 2023, Th.B.6.2, 2023.

K. Nakada, Y. Matsuno, Y. Uchida, M. Takahashi, R. Tahara, T. Izumi, R. Sugizaki and M. Jinno, “Characteristics and System Impact of Multipath Interference in Optical Devices with Short Multicore Fibers for Spatial Channel Networks,” in Photonics in Switching and Computing (PSC) 2023, Fr2A.3, 2023.

Y. Uchida, R. Tahara, K. Nakada and M. Jinno, “Crosstalk Measurement and Analysis in Core Selective Switch Based Spatial Cross-Connect for Spatial Channel Networks,” in Photonics in Switching and Computing (PSC) 2023, Fr1A.2, 2023.

Y. Shimomura, H. Takeshita and K. Hosokawa, “Power Savings in MC-EDFA Repeated Transmission by Cladding Pumping,” in 25th Optoelectronics and Communications Conference (OECC), 2023 0137-18, 2023.

S. Beppu, D. Soma and Y. Wakayama, “Requirements of SDM fibers for MIMO transmission systems,” in 25th Optoelectronics and Communications Conference (OECC) 2023, 0425-1, 2023.

S.Tateno, H. Takeshita, K.Hosokawa and Emmanuel Le Taillandier de Gabory, “Capacity Expansion in Submarine Cable Systems With Bidirectional Transmission Using 4-Core-or-More MCF and MC-EDFA,” in Journal of Lightwave Technology, vol. 41, no. 11, pp. 3943-3949, June 15, 2023.

H. Takeshita, Y. Shimomura and K. Hosokawa, “Bidirectional Cladding-Pumped Multicore EDFA and its Optimization for Energy Efficiency by Tuning Pump Condition,” in Journal of Lightwave Technology, vol. 41, no. 11, pp. 3455-3461, June 1, 2023.

K. Miura, K. Matsumoto, Y. Uchida and M. Jinno, “Spectral Grooming Strategies in Spatial Channel Network Based on WDM/SDM Hierarchical Optical Cross-Connects,” in International Conference on IP/IoT_&_Processing + Optical Network (iPOP) 2023, T3-2, 2023.

S. Beppu, D. Soma, Y. Wakayama and N. Yoshikane, “Study of input SOP dependency on output power per core in coupled-core multicore fibers,” in EXAT2023, P-9, 2023.

K. Miura, K. Matsumoto, Y. Uchida and M. Jinno, “Analysis of Node Costs and Core Resource Utilization Efficiency in Spatial Channel Network Using CDCROADM and SXC Cost Models,” in EXAT2023, P-26, 2023.

R. Tahara, Y. Uchida, K. Nakada, I. Urashima and M. Jinno, “Polarity and Horizontal-Flipping Management in Multicore-Fiber-Based Optical Devices, Nodes, and Networks,” in 2023 International Conference on Optical Network Design and Modeling (ONDM), Session 16, 2023.

Y.Nakamara and H. Takeshita, “Technologies for Optical Submarine Cable, Past, Present and Future,” in Optical Fiber Communication Conference (OFC) 2023, Tu3E.4, 2023.

S. Beppu, M. Kikuta, D. Soma, Y. Yaegashi, K. Igarashi, M.Shigihara, K. Aizawa, N. Yoshikane, and T. Tsuritani, “Real-Time 6-Mode 19-Core Fiber Transmission,” in Optical Fiber Communication Conference (OFC) 2023, Tu3E.5, 2023.

Raul Muñoz, Carlos Manso, Filippos Balasis, D. Soma, S. Beppu, Ramon Casellas, Ricard Vilalta, Ricardo Martínez, N. Yoshikane, and T. Tsuritani, “Dynamic bypass of wavelength switching in SDN-enabled WDM VNTs over SDM Networks with high bit-rate optical channels,” in Optical Fiber Communication Conference (OFC) 2023, Tu3D.5, 2023.

Y. Kuno, M. Kawasugi, Y. Hotta, R.Otowa, M. Mizoguchi, and Y. Sakurai, “Core-Selective Switch for SDM Network based on LCPG and MEMS technology,” in Optical Fiber Communication Conference(OFC) 2023, M4J.4, 2023.

Daniel J. Elson, Y. Wakayama, N. Yoshikane, and T. Tsuritani, “Performance Requirements for FIFO-less Multicore Fibre Repeaters in Transatlantic-class Transmission,” in Optical Fiber Communication Conference (OFC) 2023, M2B.1, 2023.

K. Nakada, H. Takeshita, Y. Kuno, Y. Matsuno, I. Urashima, Y. Shimomura, Y. Hotta, T. Sasaki, Y. Uchida, K. Hosokawa, R. Otowa, R. Tahara, Emmanuel Le Taillandier de Gabory, Y. Sakurai, R. Sugizaki, and M. Jinno, “Single Multicore-Fiber Bidirectional Spatial Channel Network Based on Spatial Cross-Connect and Multicore EDFA Efficiently Accommodating Asymmetric Traffic,” in Optical Fiber Communication Conference (OFC) 2023, M4G.7, 2023.

H. Takeshita, K. Nakamuara, Y.Matsuo, T.Inoue, D. Masuda, T. Hiwatashi, K. Hosokawa, Y. Inada, and Emmanuel Le Taillandier de Gabory, “Demonstration of Uncoupled 4-Core Multicore Fiber in Submarine Cable Prototype With Integrated Multicore EDFA,” in Journal of Lightwave Technology, vol. 41, no. 3, pp. 980-988, February 1, 2023.

Y. Uchida, I. Urashima, T. Ishikawa, S. Murao, R. Tahara, K. Nakada, and M. Jinno, “Design and Performance of 1×8 Core Selective Switch Supporting 15 Cores Per Port Using Bundle of Three 5-Core Fibers,” in Journal of Lightwave Technology, vol. 41, no. 3, pp. 871-879, Feb.1, 2023.

M. Jinno, “Enabling technologies for flexible and scalable spatial cross-connects,” in SPIE Photonics West, 12429-6, 2023.

2022

S. Takasaka, K. Maeda, R. Sugizaki, and Yoshihiro Arashitani, “L-band 19-Core Erbium Doped Fibre Amplifier with Power Consumption of 1.2 W/core for 20 dBm/core Output,” in Proceedings European Conference on Optical Communication (ECOC), Th2A.4, 2022.

H. Takeshita, Y. Shimomura, K. Hosokawa, and Emmanuel Le Taillandier de Gabory, “Improvement of the Energy Efficiency of Cladding Pumped Multicore EDFA Employing Bidirectional Pumping and Control,” in Proceedings European Conference on Optical Communication (ECOC), Th2A.6, 2022.

H. Takeshita,“Multicore fibre in cable and transmission trials,” in Proceedings European Conference on Optical Communication (ECOC), Th1D.5, 2022.

S. Tateno, H. Takeshita, K. Hosokawa, and Emmanuel Le Taillandier de Gabory, “Increase of Capacity with Bidirectional Transmission Using 4-core-or-more MCF and MC-EDFA in Submarine Systems,” in Proceedings European Conference on Optical Communication (ECOC), Mo4D.3, 2022.

Raul Muñoz, Carlos Manso, Filippos Balasis, Cen Wang, Ricard Vilalta, Ramon Casellas, Ricardo Martinez, N.Yoshikane, T. Tsuritani,“Dynamic Upgrade/Downgrade of WDM Link Capacity in SDN-Enabled WDM VNTs Over SDM Networks,” in Proceedings European Conference on Optical Communication (ECOC), We2B.2, 2022.

Y. Wakayama, N. Yoshikane, T. Tsuritani,“FIFO-Less Core-Pumped Multicore Fibre Amplifier With Fibre Bragg Grating Based Gain Flattening Filter,” in Proceedings European Conference on Optical Communication (ECOC), Th2A.5, 2022.

S. Beppu, D. Soma, N. Yoshikane, T. Tsuritani,“Dependence of Q² on Inter-Core Skew and Mode Dependent Loss in Long-Haul Coupled-Core Multicore Fibre Transmission,” in Proceedings European Conference on Optical Communication (ECOC), Th1D.4, 2022.

Y. Uchida, T. Ishikawa, S. Murao, I. Urashima, R. Tahara, K. Nakada, and M. Jinno,“Variable Optical Attenuation Function of Core Selective Switch and Its Impact on Inter-core Crosstalk Characteristics,” in Proceedings European Conference on Optical Communication (ECOC), We5.3, 2022.

K. Matsumoto, K. Miura, Y. Uchida and M. Jinno, “Impact of Connection Flexibility in Spatial Cross-Connect on Core Resource Utilization Efficiency and Node Cost in Spatial Channel Networks,” in Proceedings European Conference on Optical Communication (ECOC), Tu5.43, 2022.

Y. Kuno, M. Kawasugi, Y. Hotta, R. Otowa, M. Mizoguchi, F. Takahashi, Y. Sakurai, M. Jinno, “19-core 1×8 Core Selective Switch for Spatial Cross-Connect”, in Proceedings OptoElectronics and Communications Conference (OECC), WE3-2, 2022.

Y.Matsuno, M. Takahashi, R. Sugizaki, Y. Arashitani, “Design of 19-Core Multicore Fibers for High Density Optical Wiring” in Proceedings Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC), paper MC2-3.

H. Takeshita, Y. Shimomura, S. Tateno, K.Hosokawa and Emmanuel Le Taillandier de Gabory, “Novel Bidirectional Multicore EDFA Based on Twin Turbo Cladding Pumping Using Bidirectional Pumping and Recycling,” in Proceedings Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC), paper TuC1-2.

Y. Uchida, T. Ishikawa, I. Urashima, S. Murao, T. Kodama, Y. Sakurai, R. Sugizaki, and M. Jinno, “Core selective switch supporting 15 cores per port using bundled three 5-core fibers,” in Proceedings Optical Fiber Communications Conference and Exhibition (OFC), M4J.2, 2022.

K. Matsumoto and M. Jinno, “Core selective switch based branching unit architectures and efficient bidirectional core assignment scheme for regional SDM submarine system, ” in Proceedings Optical Fiber Communications Conference and Exhibition (OFC), W3F.3, 2022.

M. Jinno, I. Urashima, T. Ishikawa, T. Kodama, and Y. Uchida, “Core selective switch with low insertion loss over ultra-wide wavelength range for spatial channel networks,” Journal of Lightwave Technology 40 (6), 1821-1828, 2022.

2021

M. Jinno, “Core Selective Switch and Its Application to Space Division Multiplexing Submarine Systems,” in Proceedings Photonics in Switching and Computing 2021, W. Bogaerts, K. Morito, S. Ben Yoo, M. Fiorentino, K. Ishii, and B. Offrein, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper Tu5C.3.