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IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control|December 31, 2009
Coherent microwave transfer over a 204-km telecom fiber link by a cascaded systemMiho Fujieda, Motohiro Kumagai, Shigeo NaganoOptics Express|June 11, 2026
Terahertz frequency standard based on the photomixing of two lasers stabilized to a common acetylene reference cellShigeo Nagano, Motohiro Kumagai, Norihiko Sekine, et al.Optics Letters|October 2, 2009
Stable radio frequency transfer in 114 km urban optical fiber linkMotohiro Kumagai, Miho Fujieda, Shigeo Nagano, et al.Optics Letters|August 14, 2013
Microwave synthesis from a continuous-wave terahertz oscillator using a photocarrier terahertz frequency combShigeo Nagano, Hiroyuki Ito, Motohiro Kumagai, et al.The Review of Scientific Instruments|August 25, 2025
Design and experimental simulation for an optical frequency transfer system on silicon photonic platformShigeo Nagano, Motohiro Kumagai, Kentaro Furusawa, et al.Optics Express|September 22, 2011
All-optical link for direct comparison of distant optical clocksMiho Fujieda, Motohiro Kumagai, Shigeo Nagano, et al.Optics Express|August 25, 2016
Dissemination of optical-comb-based ultra-broadband frequency reference through a fiber networkShigeo Nagano, Motohiro Kumagai, Ying Li, et al.Optics Express|October 6, 2012
Direct comparison of a Ca+ single-ion clock against a Sr lattice clock to verify the absolute frequency measurementKensuke Matsubara, Hidekazu Hachisu, Ying Li, et al.Physical Review Letters|October 15, 2008
Search for a stochastic background of 100-MHz gravitational waves with laser interferometersTomotada Akutsu, Seiji Kawamura, Atsushi Nishizawa, et al.Pageof 1