Publications

First author:

• G. Soma, K. Komatsu, Y. Nakano, and T. Tanemura, "Complete vectorial optical mode converter using multi-layer metasurface," Nat. Commun. 16, 7744 (2025). DOI: 10.1038/s41467-025-62401-w. [press release] [Preprint: arXiv[physics.optics] 2401.05127]

• G. Soma, K. Komatsu, C. Ren, Y. Nakano, and T. Tanemura, "Metasurface-enabled non-orthogonal four-output polarization splitter for non-redundant full-Stokes imaging," Opt. Express 32(20), 34207-34222 (2024). DOI: 10.1364/OE.529389. [selected for Editors' Pick] 

• G. Soma, Y. Nomoto, T. Umezawa, Y. Yoshida, Y. Nakano, and T. Tanemura, "Compact and scalable polarimetric self-coherent receiver using a dielectric metasurface," Optica 10(5), 604-611 (2023). DOI: 10.1364/optica.484318.  [press release] [selected for cover image]

• G. Soma, W. Yanwachirakul, T. Miyazaki, E. Kato, B. Onodera, R. Tanomura, T. Fukui, S. Ishimura, M. Sugiyama, Y. Nakano, and T. Tanemura, “Ultra-broadband surface-normal coherent optical receiver with nanometallic polarizers,” ACS Photonics 9(8), 2842-2849 (2022). DOI: 10.1021/acsphotonics.2c00759. [press release]

• G. Soma, S. Ishimura,  R. Tanomura, T. Fukui, M. Ito, Y. Nakano, and T. Tanemura, "Integrated Dual-Polarization Coherent Receiver without Polarization Splitter-Rotator, " Opt. Express 29(2), 1711-1721 (2021). DOI: 10.1364/OE.413310.

Co-author:

• C. Ren, K. Komatsu, G. Soma, Y. Nakano, and T. Tanemura, "Metasurface-based functional optical splitter for a spatially parallelized dual-polarization coherent modulator," Opt. Lett. 49(24), 7238–7241 (2024). DOI: 10.1364/OL.541473.

• K. Komatsu, G. Soma, S. Ishimura, H. Takahashi, T. Tsuritani, M. Suzuki, Y. Nakano, and T. Tanemura, "Scalable Multi-Core Dual-Polarization Coherent Receiver Using a Metasurface Optical Hybrid," J. Lightwave Technol. 42(11), 4013-4022 (2024). DOI: 10.1109/JLT.2024.3374336.

• R. Tanomura, R. Tang, G. Soma, S. Ishimura, T. Tanemura, and Y. Nakano, "All-Optical MIMO Demultiplexing Using Silicon-Photonic Dual-Polarization Optical Unitary Processor," J. Lightwave Technol. 41(12), 3791–3796 (2023). DOI: 10.1109/JLT.2023.3276003.

• R. Tanomura, R.Tang, T. Umezaki, G. Soma, T. Tanemura, Y. Nakano, "Scalable and Robust Integrated Unitary Converter based on Multiplane Light Conversion," Phys. Rev. Appl., 17(2), 024071 (2022). DOI: 10.1103/PhysRevApplied.17.024071.

Preprint:

• G. Soma, K. Ariu, S. Karakida, Y. Tsubai, and T. Tanemura, "Subvolt high-speed free-space modulator with electro-optic metasurface," arXiv[physics.optics] 2503.17986 (2025). (Accepted in Nature Nanotechnology.)

• G. Soma, T. Akazawa, E. Kato, M. Takenaka, Y. Nakano, and T. Tanemura, "Ultrafast one-chip optical receiver with functional metasurface," arXiv[physics.optics] 2503.02264 (2025). 

First author:

• 相馬豪, 野本佳朗, 梅沢俊匡, 吉田悠来, 中野義昭, 種村拓夫, “誘電体光メタサーフェスを用いた高速偏波受信器,” 光学 53(6),  255 (2024).

Co-author:

• 小松憲人, 相馬豪, 石村昇太, 高橋英憲, 釣谷剛宏, 鈴木正敏, 中野義昭, 種村拓夫, “メタサーフェスによる空間・偏波多重コヒーレント受信器,” 電子情報通信学会和文論文誌C J108-C(04) (2025).

• 種村拓夫, 小松憲人, 相馬豪, “誘電体メタサーフェスを用いたコヒーレント光通信用受信器,” 応用物理 94(2), 84-88 (2025).

First author:

• G. Soma, K. Komatsu, Y. Nakano, and T. Tanemura, "Spatial and Polarization Mode Multiplexer using a Reflective Metasurface Chip," in Optical Fiber Communication Conference (OFC) 2025, M1D. (Refereed / Oral)

• G. Soma, W. Yanwachirakul, T. Miyazaki, E. Kato, B. Onodera, R. Tanomura, T. Fukui, S. Ishimura, M. Sugiyama, Y. Nakano, and T. Tanemura, “Compact Surface-Normal Coherent Receiver with Wire-Grid Polarizers,” in Conference on Lasers and Electro-Optics (CLEO) 2023, SM4I.3. (Refereed / Oral)

• G. Soma, Y. Nomoto, T. Umezawa, Y. Yoshida, Yoshiaki Nakano, and Takuo Tanemura, “Self-Coherent Transmission Using Metasurface-based Stokes-Vector Receiver,” in Optical Fiber Communication Conference (OFC) 2023, M2E.2. (Refereed / Oral)

• G. Soma, Y. Nomoto, Y. Nakano, and T. Tanemura, “Surface-Normal Stokes Vector Receiver based on Superimposed Metasurface,” in Optical Fiber Communication Conference (OFC) 2022, M4J.5. (Refereed / Oral)

• G. Soma, S. Ishimura, R. Tanomura, T. Fukui, M. Ito, Y. Nakano, and T. Tanemura, “Polarization-Splitter-Rotator-Free Dual-Polarization Coherent Receiver with a Single Optical Hybrid,” in Conference on Lasers and Electro-Optics (CLEO) 2021, STu2B.4. (Refereed / Oral)

Co-author:

• K. Ariu, G. Soma, H. Miyano, S. Karakida, and T. Tanemura, “High-Speed Free-Space Electro-Optic Modulator using Double-Layered Dimerized Nanometallic Grating,” ECOC2025. (Refereed / Oral)

• Y. Tsubai, C. Ren, G. Soma, and T. Tanemura, “Design of Efficient MCF-to-PIC Couplers with Double-Sided Dielectric Metasurface,” OECC/PSC 2025. (Refereed / Oral)

• M. Jiang, G. Soma, C. Ren, and T. Tanemura, “Free-Space Optical Communication Receiver with MMF and Photonic Processing Circuit,” OECC/PSC 2025. (Refereed / Oral)

• S. Karakida, K. Ariu, G. Soma, and T. Tanemura, “High-Speed Free-Space Fabry-Perot Modulator with Metal-Organic-Hybrid Thin Films,” OECC/PSC 2025. (Refereed / Oral)

• K. Ariu, G. Soma, S. Karakida, Y. Nakano, and T. Tanemura, “High-Q Single-Layer Dimerized Nanometallic Grating for Free-Space Optical Modulator,” OECC/PSC 2025. (Refereed / Oral)

• T. Tanemura, G. Soma, and K. Komatsu, “Metasurface-Enabled Devices for High-Speed Optical Communication,” Optica Design and Fabrication Congress 2025. [Invited]

• T. Tanemura, G. Soma, T. Fukui, K. Ariu, and S. Karakida, “High-Speed Metasurface Modulators with Organic Electro-Optic Materials,” SPP11. (Refereed / Oral)

• T. Tanemura, G. Soma, K. Komatsu, C. Ren, and Y. Tsubai, “Metasurface-based Devices for Spatially Parallelized Optical Transceivers,” IEEE SiPhotonics Conference 2025. (Oral / Invited)

• K. Ariu, G. Soma, S. Karakida, Y. Nakano, and T. Tanemura, “Surface-Normal Electro-Optic Modulator Using Dimerized Nanometallic Grating,” CLEO2025. (Refereed / Oral)

• T. Tanemura, G. Soma, K. Komatsu, C. Ren, and Y. Tsubai, "Metasurface Devices for High-Speed Optical Communication," OPTICS & PHOTONICS International Congress 2025 (Oral / Invited)

• S. Maeda, T. Suganuma, G. Soma, K. Hirashima, T. Okimoto, Y. Nakano, and T. Tanemura, "Compact WDM Coherent Transmitter using Silicon Micro-Ring Modulators," Optical Fiber Communication Conference (OFC) 2025, Tu3J. (Refereed / Oral)

• S. Maeda, T. Suganuma, G. Soma, K. Hirashima, T. Okimoto, Y. Nakano, and T. Tanemura, "Numerical Analysis of Multi-Wavelength IQ Optical Modulator with Micro Ring Resonators," in International Symposium on Photonics and Electronics Convergence Advanced Nanophotonics and Silicon Device Systems (ISPEC) 2024. (Refereed / Poster)

• K. Ariu, H. Miyano, G. Soma, A. Otomo, T. Tanemura, and Y. Nakano, “Experimental Demonstration of Dielectric Metasurface for Surface-Normal Optical IQ Modulator,” Photonics in Switching and Computing Conference (PSC) 2024. (Refereed / Oral)

• C. Ren, K. Komatsu, G. Soma, Y. Nakano, and T. Tanemura, “Experimental Demonstration of Dielectric Metasurface for Surface-Normal Optical IQ Modulator,” Photonics in Switching and Computing Conference (PSC) 2024. (Refereed / Oral)

• K. Komatsu, S. Ishimura, C. Ren, G. Soma, H. Takahashi, T. Tsuritani, M. Suzuki, Y. Nakano, and T. Tanemura, “Metasurface-based Coherent Receiver Insensitive to LO Polarization,” in Optical fiber and communication conference (OFC) 2024, Th4B.2. (Refereed / Oral / Post deadline paper)

• S. Ishimura, H. Takahashi, G. Soma, K. Komatsu, T. Tanemura, T. Tsuritani, and M. Suzuki, “Circularly-Polarized Self-Homodyne Free-Space Optical Communication using Partial Stokes-Vector Receiver,” in Optical Fiber and Communication Conference (OFC) 2024, W4G.6. (Refereed / Oral)

• T. Tanemura, S. Maeda, T. Okimoto, K. Komatsu,  G. Soma, and Y. Nakano, “Scalable Coherent Transceivers for Multi-Terabit Optical Links,” in International Symposium on Photonics and Electronics Convergence Advanced Nanophotonics and Silicon Device Systems (ISPEC) 2023. (Oral / Invited)

• S. Maeda, T. Fukui, T. Okimoto, G. Soma, T. Tanemura, and Y. Nakano, “Design and Demonstration of  Optical-Frequency-Comb-Based Coherent Receiver Circuit,” in International Symposium on Photonics and Electronics Convergence Advanced Nanophotonics and Silicon Device Systems (ISPEC) 2023. (Refereed / Poster)

• S. Maeda, T. Fukui, T. Okimoto, G. Soma, T. Tanemura, and Y. Nakano, “Silicon Photonic Multi-Wavelength Coherent Receiver using Local Oscillator Optical Frequency Comb,” in Photonic Switching Conference (PSC) 2023, M2E.2. (Refereed / Oral)

• Kento Komatsu, G. Soma, Shota Ishimura, Hidenori Takahashi, Takehiro Tsuritani, Masatoshi Suzuki, Yoshiaki Nakano, Takuo Tanemura, “FIFO-free 4-core Dual-polarization Optical Hybrid Using a Single Dielectric Metasurface,” in European Conference on Optical Communication (ECOC) 2023, Th.C.1.3. (Refereed / Oral / Post deadline paper)

• T. Tanemura, S. Ishimura, T. Fukui, R. Tanomura, G. Soma, S. Maeda, and Y. Nakano, “Photonic Integrated Self-Coherent Transceivers for Beyond-Tbps Short-Reach Links,” in International Symposium on Photonics and Electronics Convergence Advanced Nanophotonics and Silicon Device Systems (ISPEC) 2022. (Oral / invited)

• S. Maeda, T. Fukui, G. Soma, T. Tanemura, and Y. Nakano, “Design and Characterization of Multi-Wavelength Coherent Receiver Circuit,” in International Symposium on Photonics and Electronics Convergence Advanced Nanophotonics and Silicon Device Systems (ISPEC) 2022. (Refereed / Poster)

• R. Tanomura, G. Soma, R. Tang, S. Ishimura, T. Tanemura, and Y. Nakano, “All-optical dual-polarization MIMO Processor based on Integrated Optical Unitary Converter,” in European Conference on Optical Communication (ECOC) 2022, Th1F.4. (Refereed / Oral)

• R. Tanomura, K. Mizukami, R. Tang, G. Soma, T. Tanemura, and Y. Nakano, “Optical Neural Network with Reduced Phase Shifters Using Multi-Plane Light Conversion,” in OptoElectronics and Communications Conference (OECC) and Photonics in Switching and Computing (PSC) 2022, WC3-3. (Refereed / Oral / Best Student Paper Award)

• H. Miyano, T. Fukui, G. Soma, A. Otomo, T. Tanemura, and Y. Nakano,“ Dimerized plasmonic-organic gratings for high-speed metasurface modulators,” in OptoElectronics and Communications Conference (OECC) and Photonics in Switching and Computing (PSC) 2022, TuD3-2. (Refereed / Oral)

• R. Tanomura, K. Mizukami, R. Tang, G. Soma, T. Tanemura, and Y. Nakano, “Error-Tolerant Optical Neural Network Processor based on Multi-Plane Light Conversion,” in Conference on Laser and Electro-Optics (CLEO) 2022, JTh3A.49. (Refereed / Oral)

• S. Ishimura, T. Fukui, R. Tanomura, G. Soma, Y. Nakano, and T. Tanemura, “64-QAM Self-Coherent Transmission Using Symmetric Silicon Photonic Stokes-Vector Receiver,” in Optical Fiber Communication Conference (OFC) 2022, M4J.6. (Refereed / Oral)