Correlation-based end-reflection-assisted Brillouin analysis for discriminating small branch length difference. - Hiroshi Takahashi; Chihiro Kito; Fumihiko Ito; Kazuo Hotate (OFC, 2014)

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)

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)

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)