| 摘要 |
PCT No. PCT/FR95/01121 Sec. 371 Date May 2, 1996 Sec. 102(e) Date May 2, 1996 PCT Filed Aug. 25, 1995 PCT Pub. No. WO96/07942 PCT Pub. Date Mar. 14, 1996Dispersion-shifted monomode optical fibers have an effective mode surface area greater than 65 mu m2 by optimization of the geometrical characteristics that characterize the fibers. The fibers have substantially zero chromatic dispersion in the vicinity of 1.55 mu m, and they include an optical core having a central portion, a first layer having an index lower than the index of the central portion, and a second layer having an index higher than the index of the first layer and higher than the index of the optical cladding.
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