SINGLE MODE OPTICAL FIBER AND DISTRIBUTED RAMAN AMPLIFICATION TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a single mode optical fiber suitable for a wide wavelength band distributed Raman amplification transmission and to provide a distributed Raman amplification transmission system.;SOLUTION: The single mode optical fiber has a core part in which pure quartz is used and a clad part having a refractive index lower than that of the core part, and is so designed that a theoretical cut-off wavelength is 1.36 μm or smaller, a zero-dispersion wavelength is 1.36 μm or smaller and a bending loss is 0.5 dB or smaller under a prescribed condition.;COPYRIGHT: (C)2006,JPO&NCIPI