| 摘要 |
A DCF for compensating for the accumulated dispersion of a length of SMF in the C+L band window that includes a core surrounded by a cladding layer of refractive index Delta c. The core includes at least three radially adjacent segments; a central core segment having a positive Delta1, a moat segment having a negative refractive index Delta2, and a ring segment having a positive refractive index Delta3, wherein Delta1 > Delta3 > Delta c > Delta2. The DCF exhibits a negative dispersion slope of between -0.29 and -0.43 ps/nm2/km at 1575 nm, and a total dispersion less than -96 and greater than -108 ps/nm/km at 1575 nm. A transmission link including the combination of a SMF and the present invention DCF is also disclosed.
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