Dispersion-flattened photonic crystal fiber with large effective area and low confinement loss

Takashi Matsui, Jian Zhou, Kazuhide Nakajima, +1

Journal of Lightwave Technology

PhotonicsNovel PcfEngineeringMultimaterial FiberOptical Transmission System +12

Fading noise reduction in coherent OTDR

Hisashi Izumita, Seishi Furukawa, Yahei Koyamada, +1

IEEE Photonics Technology Letters

EngineeringLaser ScienceOptical Transmission SystemLaser ApplicationsFiber Optics +16

Evaluation methods and requirements for the stimulated Brillouin scattering threshold in a single-mode fiber

Tomoya Shimizu, Kazuhide Nakajima, Kazuyuki Shiraki, +2

Optical Fiber Technology

PhotonicsEngineeringOptical PropertiesFiber-optic CommunicationApplied Physics +7

The performance limit of coherent OTDR enhanced with optical fiber amplifiers due to optical nonlinear phenomena

Hisashi Izumita, Yahei Koyamada, Seishi Furukawa, +1

Journal of Lightwave Technology

Optical MaterialsEngineeringNonlinear OpticsFiber OpticsFiber-optic Communication +14

Stochastic amplitude fluctuation in coherent OTDR and a new technique for its reduction by stimulating synchronous optical frequency hopping

Hisashi Izumita, Yahei Koyamada, Seishi Furukawa, +1

Journal of Lightwave Technology

EngineeringOptical Transmission SystemWave OpticOptical Wireless CommunicationOptical Properties +14

Progress on low loss photonic crystal fibers

Jian Zhou, Katsusuke Tajima, Kazuhide Nakajima, +4

Optical Fiber Technology

PhotonicsOptical MaterialsEngineeringMultimaterial FiberOptical Properties +4

Ultrawide-band single-mode transmission performance in a low-loss photonic crystal fiber

Kazuhide Nakajima, Jian Zhou, Keisuke Tajima, +3

Journal of Lightwave Technology

Photonic Crystal FiberPhotonicsEngineeringOptical Transmission SystemOptical Properties +11

Fault location technique for in-service branched optical fiber networks

Izumi Sankawa, Shigeto Furukawa, Yahei Koyamada, +1

IEEE Photonics Technology Letters

Reliability EngineeringEngineeringFault ManagementOptical NetworksOptical Fiber Networks +10

Effective Raman gain characteristics in germanium- and fluorine-doped optical fibers

Chisato Fukai, Kazuhide Nakajima, Jian Zhou, +3

Optics Letters

PhotonicsFluorine-doped Optical FibersEngineeringPhysicsOptical Transmission System +10

Orthorhombic-to-Tetragonal Phase Transition in the Y-Ba-(Cu, Co)-O System

Izumi Sankawa, Makoto Sato, Tsuneo Konaka

Japanese Journal of Applied Physics

EngineeringSolid-state ChemistryChemistryOrthorhombic-to-tetragonal Phase TransitionSuperconductivity +15