A proposal on optical fibre transmission systems in a low-loss 1.0–1.4 μm wavelength region

摘要

Optical transmission systems, using extremely low-loss fibres in the 1.0–1.4μm wavelength region are proposed. Possibilities and expected performances are reviewed for optical components in the low-loss band, such as optical oscillators, modulators, detectors, isolators and fibre connectors. Basic considerations for the systems are described. These systems will have advantages such as a reduction in the number of repeaters and in the system costs by expanding the repeater spacing up to several tens of kilometers. Reliability requirements for repeaters, power supply and maintenance problems will be relaxed by accommodating repeaters in stations instead of manhol