Takahiro Kodama

Publication Activity (10 Years)

Years Active: 2013-2024
Publications (10 Years): 41

Top Topics

Underwater Images

Comprehensive Analysis

Top Venues

Publications

Takahiro Kodama, Tomoya Nakagawa, Shota Eguchi, Keiji Shimada, Ryosuke Matsumoto
Double-link-failure-tolerant shared protection for fully coupled/half-split switchable point-to-multipoint coherent optical systems. J. Opt. Commun. Netw. 16 (9) (2024)
Kiichiro Kuwahara, Hyuga Nagami, Keita Tanaka, Fumiya Kobori, Ayumu Kariya, Shogo Hayashida, Takahiro Kodama
Air/Water Path Switching with Beam Steering for Water Distance/Turbidity Adaptive Underwater Optical Wireless Communication Network: Concept and Demonstration. OFC (2024)
Takahiro Kodama, Fumiya Kobori, Ayumu Kariya, Keita Tanaka, Kiichiro Kuwahara
Broadband Single Flat Narrow Beam Shaped Time-domain Adaptive Modulation for Underwater Transmission with Wavelength Characteristics in Blue-green WDM System. OFC (2024)
Tomoya Ishikawa, Ayumu Kariya, Fumiya Kobori, Keita Tanaka, Takahiro Kodama
Super Wide-Flat Beam Transmission over Scatter-prone Underwater Channel Using Twin Parallel Flat-Narrow Beams Generated by Aspheric Lens Pair-type Beam Shaper. OFC (2024)
Keita Tanaka, Keiiji Shimada, Takahiro Kodama, Momoka Masaoka, Ken'ichi Fujimoto
Kalman-Filter-Aided Dual-Band Collaborative Frequency Self-Tuning in Multiband Transceiver for P-to-MP System with Tight Passband Narrowing. PSC (2023)
Keiiji Shimada, Ryosuke Matsumoto, Keita Tanaka, Takahiro Kodama
Secure Point-to-Multipoint Transmission with Access-Span Difference Using Phase Encryption and Power-Loaded IQ-Channel Multiplexing. PSC (2023)
Takahiro Kodama, Shohei Beppu, Daiki Soma, Yuta Wakayama, Noboru Yoshikane, M. Jinno, Takehiro Tsuritani
First Demonstration of Hierarchical SDM/WDM 10-Mode-Fiber Ring Network with Spatial Bypass and Reconfigurable Spatial Add/Drop Multiplexing. OECC/PSC (2022)
Masaki Murakami, Yoshihiko Uematsu, Satoru Okamoto, Naoaki Yamanaka, Daiki Soma, Shohei Beppu, Noboru Yoshikane, Takehiro Tsuritani, Takahiro Kodama, Masahiko Jinno
Experiment of Nationwide Multi-Route Skew Cancelling for Dynamic Mapping of MAC Signals over SDM/WDM Network Testbed. OECC/PSC (2022)
Hidetoshi Amano, Mizuki Inagaki, Takahiro Kodama
Polarization-independent Subtractive Interference Cancellation for Bidirectional Same-band Digital Coherent System. OECC/PSC (2022)
Takahiro Kodama, Tomoya Nakagawa, Ryosuke Matsumoto
Any-Double-Link Failure Tolerant Bypass/Backup Switchable WDM-PON Employing Path-Pair Shared Protection and Bidirectional Wavelength Pre-assignment. OFC (2022)
Yudai Uchida, Tsubasa Ishikawa, Itsuki Urashima, Shoma Murao, Takahiro Kodama, Yasuki Sakurai, Ryuichi Sugizaki, Masahiko Jinno
Core Selective Switch Supporting 15 Cores Per Port Using Bundled Three 5-Core Fibers. OFC (2022)
Shota Eguchi, Tomoya Nakagawa, Mizuki Inagaki, Keiji Shimada, Takahiro Kodama
C-Band Downlink Coherent System Assisted TWDM-PON System with Type B Protection and Dual-DSP Collaborative SIMO. OECC/PSC (2022)
Takahiro Kodama, Gabriella Cincotti
All-optical MDM-OFDM System Using A Single MUX/DeMUX for Future Converged Optical Networks. OECC/PSC (2022)
Fumiya Kobori, Keita Tanaka, Takahiro Kodama
Inter Symbol Interference-tolerant Time-domain Hybrid PAM2/PAM4 Signal with Optimized Time Slot Arrangement. OECC/PSC (2022)
Takahiro Kodama, Muhamad Aizat Bin Ahmad Sanusi, Fumiya Kobori, Tomotaka Kimura, Yoshiaki Inoue, Masahiko Jinno
Time-Domain Hybrid PAM for Data-Rate and Distance Adaptive UWOC System. CoRR (2021)
Masahiko Jinno, Yu Asano, Yoshiki Azuma, Takahiro Kodama, Riku Nakai
Technoeconomic analysis of spatial channel networks (SCNs): benefits from spatial bypass and spectral grooming [Invited]. JOCN 13 (2) (2021)
Takahiro Kodama, Muhamad Aizat Bin Ahmad Sanusi, Fumiya Kobori, Tomotaka Kimura, Yoshiaki Inoue, Masahiko Jinno
Comprehensive Analysis of Time-Domain Hybrid PAM for Data-Rate and Distance Adaptive UWOC System. IEEE Access 9 (2021)
Masahiko Jinno, Tsubasa Ishikawa, Takahiro Kodama, Hiroshi Hasegawa, Suresh Subramaniam
Enhancing the flexibility and functionality of SCNs: demonstration of evolution toward any-core-access, nondirectional, and contentionless spatial channel cross-connects [Invited]. JOCN 13 (8) (2021)
Yoshiaki Inoue, Takahiro Kodama, Tomotaka Kimura
Global Optimization of Relay Placement for Seafloor Optical Wireless Networks. IEEE Trans. Wirel. Commun. 20 (3) (2021)
Takahiro Kodama, Tetsuji Goto, Ryosuke Matsumoto
Wavelength Collision-Free and Low-Loss Full-Duplex Transmission over Switchable Full-Coupling or Half-Split Coherent WDM-PON System with Shared Protection. OFC (2021)
Masahiko Jinno, Itsuki Urashima, Tsubasa Ishikawa, Takahiro Kodama
Ultra-Wideband and Low-Loss Core Selective Switch Employing Two-Dimensionally Arranged MEMS Mirrors. OFC (2021)
Takahiro Kodama, Akihiro Maruta, Naoya Wada, Gabriella Cincotti
Fixed-Rate-Breaking All-Optical OFDM System using Time-Domain Hybrid PAM with Sparse Subcarrier Multiplexing and Power-Loading for Optical Short-Reach Transmission. OFC (2020)
Masahiko Jinno, Takahiro Kodama
Spatial Channel Network (SCN): Introducing Spatial Bypass toward the SDM Era. OFC (2020)
Takahiro Kodama, Kouki Arai
Energy-Efficient Coherent PON System with Access-Span Length Difference between ONUs using Marginal IQ Power Loading in Downlink Transmission. OFC (2020)
Yoshiaki Inoue, Takahiro Kodama, Tomotaka Kimura
Global Optimization of Relay Placement for Seafloor Optical Wireless Networks. CoRR (2020)
Masahiko Jinno, Takahiro Kodama, Tsubasa Ishikawa
Five-Core 1×6 Core Selective Switch and Its Application to Spatial Channel Networking. OFC (2020)
Takahiro Kodama, Tsubasa Ishikawa, Daiki Suzuki, Masahiko Jinno
Demonstration of Any-Care-Access Non-Directional Spatial Cross-Connects Based on Core Selective Switch with and without Core-Contention Constraint. ECOC (2020)
Tsuyoshi Konishi, Takuya Murakawa, Tomotaka Nagashima, Satoshi Shimizu, Makoto Hasegawa, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Naoya Wada, Hiroyuki Uenohara, Takahiro Kodama, Gabriella Cincotti
Enhanced Optical Communications Through Joint Time-Frequency Multiplexing Strategies. OFC (2019)
Takahiro Kodama, Gabriella Cincotti
Hybrid QAM-Based Labels Generated by Two Multi-Level PSK Codes. IEICE Trans. Commun. (12) (2019)
Takahiro Kodama, Koki Arai, Kota Nagata, Kazuhiko Nakamura, Masanori Hanawa
Underwater Wireless Optical Access Network with OFDM/SBMA System: Concept and Demonstration. OECC/PSC (2019)
Masanori Hanawa, Takahiro Kodama, Kazuhiko Nakamura
SOP Independent Self-Homodyne Detection of Polarization Multiplexed QPSK Signal with AQPM Pilot Carrier. OECC/PSC (2019)
Takahiro Kodama, Tatsuya Miyazaki, Masanori Hanawa, Akihiro Maruta, Naoya Wada, Gabriella Cincotti
Low-Speed DSP Assisted Dispersion Compensation-Free IM/DD Optical OFDM Transmission Over 100 km-SMF using Time- and Frequency-Domain Sparse-Subcarrier Multiplexing. OFC (2019)
Kazuhiko Nakamura, Kenichi Nagaoka, Daisuke Matsuo, Takahiro Kodama, Masanori Hanawa
Over 1 Gbit/s NRZ-OOK Underwater Wireless Optical Transmission Experiment Using Wideband PMT. OECC/PSC (2019)
Takahiro Kodama, Yamato Iwama, Masanori Hanawa
Dispersion-induced IQ Imbalance Compensation Using an Electrical-domain Pre-FDE in QPSK Self-homodyne Transmission with AQPM Pilot-carrier. PSC (2018)
Takahiro Kodama, Gabriella Cincotti
Hybrid Opto-Electrical CDM-Based Access Network. IEICE Trans. Commun. (6) (2018)
Takahiro Kodama, Tatsuya Miyazaki, Masanori Hanawa
Seamless PAM-4 to QPSK Modulation Format Conversion at Gateway for Short-Reach and Long-Haul Integrated Networks. ECOC (2018)
Takahiro Kodama, Gabriella Cincotti
Multi-level QAM-based labels Generated by the Convolution of Optical and Electrical Codes. PSC (2018)
Masashi Binkai, Takahiro Kodama, Tsuyoshi Yoshida, Yuita Noguchi, Naoki Suzuki, Kuniaki Motoshima
Frequency-domain hybrid N × 100 Gb/s regular QAMs for simple, scalable, and transparent software-defined optical transport. OFC (2017)
Takahiro Kodama, Masashi Binkai, Tsuyoshi Yoshida
Simple frequency-domain hybrid-QAM superchannel with path-fitted pre-filtering and collaborative-subcarrier frequency self-tuning for flexible ROADM systems. OFC (2017)
Takahiro Kodama, Ryosuke Matsumoto, Naoki Suzuki
Demonstration of data-rate and power-budget adaptive 100 Gb/s/ A-based coherent PON downlink transmission. OFC (2017)
Takahiro Kodama, Ryosuke Matsumoto, Akihiro Maruta, Tsuyoshi Konishi, Ken-ichi Kitayama
Nonlinear-Error-Free Optical Quantization Using Dense Spectral Slicing. IEICE Trans. Commun. (3) (2016)
Gabriella Cincotti, Satoshi Shimizu, Takuya Murakawa, Takahiro Kodama, Kunihiro Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Tomotaka Nagashima, Makoto Hasegawa, Naoya Wada, Hiroyuki Uenohara, Tsuyoshi Konishi
Flexible power-efficient Nyquist-OTDM transmitter, using a WSS and time-lens effect. OFC (2015)
Takahiro Kodama, Koji Morita, Gabriella Cincotti, Ken-ichi Kitayama
A novel optical quantization approach using spectral shifts of OFDM subcarriers and a frequency packed AWG. ECOC (2014)
Takahiro Kodama, Tomoki Isoda, Koji Morita, Akihiro Maruta, Ryo Maruyama, Nobuo Kuwaki, Shoichiro Matsuo, Naoya Wada, Gabriella Cincotti, Ken-ichi Kitayama
Asynchronous MDM-OCDM-based 10G-PON over 40km-SMF and 2km-TMF using mode MUX/DeMUX at remote node and OLT. OFC (2014)
Takahiro Kodama, Naoya Wada, Gabriella Cincotti, Ken-ichi Kitayama
Highly-scalable, fully-asynchronous 16 ONUs, OCDM-based 10G-PON with a multiple access noise suppression at RN. OFC/NFOEC (2013)
Ryosuke Matsumoto, Takahiro Kodama, Satoshi Shimizu, Ryujiro Nomura, Koji Omichi, Naoya Wada, Ken-ichi Kitayama
Cost-effective, asynchronous 4 × 40Gbps full-duplex OCDMA demonstrator using apodized SSFBGs and a multi-port encoder/decoder. OFC/NFOEC (2013)
Yuki Yoshida, Takahiro Kodama, Satoshi Shinada, Naoya Wada, Ken-ichi Kitayama
Fixed-length elastic-capacity OFDM payload packet: Concept and demonstration. OFC/NFOEC (2013)
Takahiro Kodama, Yusuke Tanaka, Satoshi Yoshima, Nobuyuki Kataoka, Junichi Nakagawa, Satoshi Shimizu, Naoya Wada, Ken-ichi Kitayama
Scaling the System Capacity and Reach of a 10G-TDM-OCDM-PON System Without an En/Decoder at an ONU. JOCN 5 (2) (2013)
Takahiro Kodama, Ryosuke Matsumoto, Akihiro Maruta, Ken-ichi Kitayama
Energy-efficient optical quantization scheme with orthogonal spectral slicing by AWG for OFDM. OFC/NFOEC (2013)