Optical transmission characteristics of optical fiber cables and installed optical fiber cable networks for WDM systems

摘要

Many cables containing 1.3-μm zero-dispersion single-mode (SM) optical fibers are installed in trunk and access networks. Recently, there have been a number of studies on wavelength division multiplexing (WDM) systems designed to increase transmission capacity and flexibility. If we can construct WDM systems using SM optical fiber, this will prove very effective in reducing construction costs. Therefore, it is important to examine the wavelength dependence of the transmission characteristics of SM optical fiber cables and networks that have been already installed and joined several optical fibers. In this paper, we describe the optical loss characteristics at various wavelengths. We confirmed that optical transmission was stable up to a wavelength of 1.625 μm (upper wavelength of L-Band).