Electronics Letters · 1990 · 20 citations · 4 references
EngineeringElectrical EngineeringOpticsOptoelectronicsPhotonicsFiber OpticsFiber-optic CommunicationOptical AmplifiersOptical Communication SystemsOptical FibersDirect DetectionFiber AttenuationFiber Optic Communication SystemsHeterodyne DetectionOptical ReceiversOptical Transmission SystemsPhoton Detection SensitivityReceiver Sensitivity
A nonrepeated fibre transmission experiment over 308 km of conventional optical fibre is reported at 2.5 Gbit/s in a CPFSK heterodyne detection system. The system has a sensitivity of −46.7 dBm or 67 photons/bit at 10−9 BER and has the maximum allowable attenuation of 55.1 dB without an optical amplifier.
4
Long-cavity, multiple-phase-shift, distributed feedback laser for linewidth narrowing
S. Ogita, Y. Kotaki, M. Matsuda et al. · Electronics Letters · 1989 · 29 citations
Engineering, Biophysics, Photonics +14