| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative dispersion optical fiber in which optical transmission loss at 1.55μm wavelength is 0.23 dB/km or less while retaining dispersion characteristic roughly comparable to a conventional RDF. SOLUTION: The negative dispersion optical fiber has dispersion of -15 ps/nm/km or below and optical transmission loss of 0.23 dB/km or below each at 1.55μm wavelength. Accordingly, a WDM transmission line suitable for high-speed large-capacity transmission with a low optical transmission loss is built by combining the negative dispersion optical fiber (RDF) with a proper positive dispersion optical fiber (SMF for example). Furthermore, it eliminates conventional shortcomings in using a line dispersion compensation optical fiber in terms of optical transmission loss, dispersion compensation ratio, etc. COPYRIGHT: (C)2004,JPO&NCIPI |
