Non-zero dispersion-shifted optical fiber with ultra-large effective area and low dispersion slope for terabit communication system

A Novel Multiclad Single Mode Optical Fibers for Broadband Optical Networks

“…In order to broaden the wavelength range -not only the conventional C-band (1530-1565 nm) -but also the L-band (1565-1620 nm) and S-band (1460-1530 nm), the dispersion slope should be as low as possible, which can decrease the cost of dispersion compensation and suppress the self-phase modulation, especially for the 40 Gb/s communication system. Now we present a new depressed core index dual ring profile, which can provide a large A eff and a low dispersion slope simultaneously, and the zero dispersion wavelength is less than 1430 nm [32]. The fibers with this refractive index profile have the low bending loss and low intrinsic loss.…”

Reverse Dispersion Fiber with Depressed Core-index Profile for Dispersion-managed Fiber Pairs

“…According to the experience of development ULAF and other reports [7][8][9], we know that the fiber with depressed center core profile can usually achieve a large effective core-area. RDS is defined as the ratio of dispersion slope to dispersion.…”

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“…Since the nonlinear effects are inversely proportional to the effective area of fiber, increasing the effective area will reduce further the nonlinear effects. To increase the effective area, different profiles designs with maximum large effective area of about 95 μm 2 , 100 μm 2 , 100 μm 2 ,150 μm 2 were developed 30,33 and fabricated 34,35 respectively.…”