| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wavelength dispersion compensation fiber that has a small DOS value and that can be directly used inside a compensation module without accompanying any additional fiber. <P>SOLUTION: The wavelength dispersion compensation and the dispersion slope compensation optical fiber comprises a central core, a first buried inner cladding, a ring, and a second buried inner cladding. The index differenceΔn<SB>2</SB>between the first buried inner cladding and the outer cladding is≤-13.5×10<SP>-3</SP>, and the index differenceΔn<SB>4</SB>between the second buried inner cladding and the outer cladding is≤-3×10<SP>-3</SP>. The fiber has a wavelength of 1,550 nm, a wavelength dispersion≤-50 ps/nm/km and a ratio of the wavelength dispersion over the wavelength dispersion slope DOS≤70 nm. The second deeply buried inner cladding allows obtaining a low DOS value while maintaining acceptable optical characteristics. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
