Design Method for Distributed Raman Amplification Systems Based on Statistical Properties in Optical Fibers. - Kunihiro Toge; Kazuo Hogari (IEICE Trans. Commun., 2005)

Polarization Mode Dispersion Characteristic of Optical Fiber Ribbons Inserted Tightly into Slots. - Kunihiro Toge; Kazuo Hogari; Fumihiko Yamamoto; Izumi Sankawa (IEICE Trans. Commun., 2005)

Design and Performance of Low-Loss Submarine Optical Fiber Cable for Long-Distance Submarine Repeaterless Transmission System Employing Remotely Pumped EDF and Distributed Raman Amplification. - Kunihiro Toge; Kazuo Hogari; Kenji Kurokawa; Nobuyuki Yoshizawa; Tadashi Haibara (IEICE Trans. Commun., 2006)

Novel Optical Fiber Cable with Small Cable Diameter Employing Rollable 20-Fiber Ribbons. - Kazuo Hogari; Yusuke Yamada; Kunihiro Toge (IEICE Trans. Commun., 2010)

200-subchannel ultra-high-density frequency division multiplexed coherent otdr with nonlinear effect suppression. - Hiroyuki Iida; Kunihiro Toge; Fumihiko Ito (OFC/NFOEC, 2013)

Demonstration of optical correlation domain reflectometry based on coherence synchronization for long-range measurement. - Tatsuya Okamoto; Daisuke Iida; Kunihiro Toge; Tetsuya Manabe (ECOC, 2015)

Brillouin-based PON monitoring using frequency-swept pump pulse for gain profile distribution compensation along cables. - Hiroshi Takahashi; Kunihiro Toge; Chihiro Kito; Tetsuya Manabe (ECOC, 2015)

High-frequency distributed acoustic sensing faster than repetition limit with frequency-multiplexed phase-OTDR. - Daisuke Iida; Kunihiro Toge; Tetsuya Manabe (OFC, 2016)

Long-range C-OFDR measurement of Rayleigh scatter signature of fiber beyond laser coherence length. - Shingo Ohno; Daisuke Iida; Kunihiro Toge; Tetsuya Manabe (OFC, 2016)

Distributed Spatial Mode Dispersion Measurement Along Strongly Coupled Multicore Fibre with C-OFDR. - Shingo Ohno; Daisuke Iida; Kunihiro Toge; Tetsuya Manabe (ECOC, 2017)

Nondestructive characterization of differential mode delay in few-mode fiber link using Rayleigh backscattering spectral shifts. - Shingo Ohno; Daisuke Iida; Kunihiro Toge; Tetsuya Manabe (OFC, 2017)

Distributed measurement of single-way inter-modal crosstalk in spliced FMFs based on BOTDA. - Hiroshi Takahashi; Chihiro Kito; Kunihiro Toge; Tetsuya Manabe; Fumihiko Ito (OFC, 2017)

Modal Attenuation Measurement in Spliced Few Mode Fibre Based on Inter-Modal Brillouin Gain Analysis. - Tomokazu Oda; Hiroshi Takahashi; Kunihiro Toge; Tetsuya Manabe (ECOC, 2018)

Distributed Measurement of Mode Dispersion of SDM Fibers. - Shingo Ohno; Kunihiro Toge; Daisuke Iida; Tetsuya Manabe (OFC, 2020)

Locating Excess Mode-Dependent Loss in Coupled Multi-Core Fibers based on Coherent OTDR. - Jumpei Hayakawa; Atsushi Nakamura; Shingo Ohno; Kunihiro Toge (OFC, 2025)

Simultaneous monitoring of 8 fiber routes by means of high-speed switching for time-sharing FDM-DAS. - Hiroshi Takahashi; Yoshifumi Wakisaka; Takahiro Ishimaru; Chihiro Kito; Keisuke Murakami; Daisuke Iida; Yusuke Koshikiya; Kunihiro Toge (OFC, 2025)

First Field Demonstration of Diagnosis of Aerial Telecom Facilities by Using High-Precision Φ-OTDR DAS. - Yoshifumi Wakisaka; Hiroshi Takahashi; Takahiro Ishimaru; Daisuke Iida; Keisuke Murakami; Chihiro Kito; Yusuke Koshikiya; Kunihiro Toge (OFC, 2025)

Vector-based multi-frequency-position phase averaging of Ф-OTDR DAS for large-scale vibration monitoring. - Yoshifumi Wakisaka; Hiroshi Takahashi; Takahiro Ishimaru; Daisuke Iida; Kunihiro Toge (OFC, 2025)