Brillouin optical-fiber time domain reflectometry

Toshio Kurashima, Tsuneo Horiguchi, Hisashi Izumita, +2

PhotonicsOptical MaterialsEngineeringPhysicsOptical Properties +4

Fading noise reduction in coherent OTDR

Hisashi Izumita, Seishi Furukawa, Yahei Koyamada, +1

IEEE Photonics Technology Letters

EngineeringLaser ScienceOptical Transmission SystemLaser ApplicationsFiber Optics +16

In-Service Line Monitoring System in PONs Using 1650-nm Brillouin OTDR and Fibers With Individually Assigned BFSs

N. Honda, Daisuke Iida, Hisashi Izumita, +1

Journal of Lightwave Technology

Individually Assigned BfssFiber-optic CommunicationBranched Optical FibersPassive Optical NetworkFiber Optic Sensing +5

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

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

Maintenance method using 1650-nm wavelength band for optical fiber cable networks

N. Nakao, Hisashi Izumita, Takashi Inoue, +3

Journal of Lightwave Technology

EngineeringMaintenance System RequirementsOptical NetworksConventional Maintenance SystemFiber Optic Sensing +7

Low-loss and compact TFF-embedded silica-waveguide WDM filter for video distribution services in FTTH systems

M. Yanagisawa, Yoshiyuki Inoue, M. Ishii, +5

Free-space Optical NetworkPhotonicsFtth SystemsVideo Distribution ServicesEngineering +8

Brillouin OTDR employing optical frequency shifter using side-band generation technique with high-speed LN phase-modulator

Hisashi Izumita, Takashi Satō, Mitsuhiro Tateda, +1

IEEE Photonics Technology Letters

EngineeringOptical Transmission SystemFiber-optic CommunicationOptical Frequency ShifterOptical Properties +14

Design and Performance of Novel Optical Fiber Distribution and Management System With Testing Functions in Central Office

Yoshitaka Enomoto, Hisashi Izumita, Koji Mine, +2

Journal of Lightwave Technology

Testing FunctionsEngineeringOptical Access NetworkOptical NetworksManagement System +12