## Abstract

Four non-zero-dispersion-shifted fibers with almost the same large effective area (${A}_{\text{eff}}$) and optimized dispersion properties are realized by novel index profile designing and modified vapor axial deposition and modified chemical vapor deposition processes. An ${A}_{\text{eff}}$ of greater than $71\text{\hspace{0.17em}}{\mathrm{\mu m}}^{2}$ is obtained for the designed fibers. Three of the developed fibers with positive dispersion are improved by reducing the $1550\text{\hspace{0.17em}}\mathrm{nm}$ dispersion slope from $0.072\text{\hspace{0.17em}}\mathrm{ps}/{\mathrm{nm}}^{2}/\mathrm{km}$ to $0.063\text{\hspace{0.17em}}\mathrm{ps}/{\mathrm{nm}}^{2}/\mathrm{km}$ or $0.05\text{\hspace{0.17em}}\mathrm{ps}/{\mathrm{nm}}^{2}/\mathrm{km}$, increasing the $1550\text{\hspace{0.17em}}\mathrm{nm}$ dispersion from $4.972\text{\hspace{0.17em}}\mathrm{ps}/\mathrm{nm}/\mathrm{km}$ to $5.679\text{\hspace{0.17em}}\mathrm{ps}/\mathrm{nm}/\mathrm{km}$ or $7.776\text{\hspace{0.17em}}\mathrm{ps}/\mathrm{nm}/\mathrm{km}$, and shifting the zero-dispersion wavelength from $1500\text{\hspace{0.17em}}\mathrm{nm}$ to $1450\text{\hspace{0.17em}}\mathrm{nm}$. One of these fibers is in good agreement with G655D and G.656 fibers simultaneously, and another one with G655E and G.656 fibers; both fibers are beneficial to high-bit long-haul dense wavelength division multiplexing systems over *S*-, *C*-, and *L*-bands. The fourth developed fiber with negative dispersion is also improved by reducing the $1550\text{\hspace{0.17em}}\mathrm{nm}$ dispersion slope from $0.12\text{\hspace{0.17em}}\mathrm{ps}/{\mathrm{nm}}^{2}/\mathrm{km}$ to $0.085\text{\hspace{0.17em}}\mathrm{ps}/{\mathrm{nm}}^{2}/\mathrm{km}$, increasing the $1550\text{\hspace{0.17em}}\mathrm{nm}$ dispersion from $-4\text{\hspace{0.17em}}\mathrm{ps}/\mathrm{nm}/\mathrm{km}$ to $-6.016\text{\hspace{0.17em}}\mathrm{ps}/\mathrm{nm}/\mathrm{km}$, providing facilities for a submarine transmission system. Experimental measurements indicate that the developed fibers all have excellent optical transmission and good macrobending and splice performances.

© 2011 Optical Society of America

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