New refractive index profiles of dispersion-flattened highly nonlinear fibers for future all-optical signal processing in wdm optical networks

New refractive index profiles of dispersion-flattened highly nonlinear fibers for future... In this paper, we demonstrate new dissimilar refractive index profiles for highly nonlinear ultra-flattened dispersion fibers with noteworthy effective area $$(A_\mathrm{eff})$$ ( A eff ) for future optical signal processing. The newly proposed fibers named from Type 1 to Type 5 have a flattened dispersion over S, C, L and U bands. Predominantly, few-mode HNL-UFF fiber of Type 3 yields dispersion-flattened characteristics over a range of 250 nm of optical communication spectrum with a mere 0.2 ps/nm km variation in dispersion and a dispersion slope of $$0.0057\hbox { ps}/\hbox {nm}^{2}$$ 0.0057 ps / nm 2  km due to the contribution of higher-order modes to the dispersion characteristics of the fiber. Moreover, it has a moderate nonlinear coefficient of $$8.03\hbox { W}^{-1}\,\hbox {km}^{-1}$$ 8.03 W - 1 km - 1 . By modifying the refractive index profile of Type 3 fiber, Type 4 and Type 5 fibers are obtained in order to ensure single-mode operation, while the zero flattened dispersion characteristics of the fiber are compromised. Among the newly proposed fibers, Type 4 fiber offers a very low ITU-T cutoff wavelength of $$1.33~\upmu \hbox {m}$$ 1.33 μ m , whereas in the case of Type 5 fiber it is $$1.38~\upmu \hbox {m}$$ 1.38 μ m . Moreover, Type 4 and Type 5 fibers have good nonlinear coefficients of $$12.26\hbox { W}^{-1}\,\hbox {km}^{-1}$$ 12.26 W - 1 km - 1 and $$11.45\hbox { W}^{-1}\,\hbox {km}^{-1}$$ 11.45 W - 1 km - 1 , respectively. By virtue of the proposed optimized index profile, an insensitive behavior toward bending is displayed by Type 3, Type 4 and Type 5 fibers. In addition, Type 4 fiber provides a better splice loss of 0.25 dB. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

New refractive index profiles of dispersion-flattened highly nonlinear fibers for future all-optical signal processing in wdm optical networks

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Publisher
Springer US
Copyright
Copyright © 2016 by Springer Science+Business Media New York
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-016-0635-2
Publisher site
See Article on Publisher Site

Abstract

In this paper, we demonstrate new dissimilar refractive index profiles for highly nonlinear ultra-flattened dispersion fibers with noteworthy effective area $$(A_\mathrm{eff})$$ ( A eff ) for future optical signal processing. The newly proposed fibers named from Type 1 to Type 5 have a flattened dispersion over S, C, L and U bands. Predominantly, few-mode HNL-UFF fiber of Type 3 yields dispersion-flattened characteristics over a range of 250 nm of optical communication spectrum with a mere 0.2 ps/nm km variation in dispersion and a dispersion slope of $$0.0057\hbox { ps}/\hbox {nm}^{2}$$ 0.0057 ps / nm 2  km due to the contribution of higher-order modes to the dispersion characteristics of the fiber. Moreover, it has a moderate nonlinear coefficient of $$8.03\hbox { W}^{-1}\,\hbox {km}^{-1}$$ 8.03 W - 1 km - 1 . By modifying the refractive index profile of Type 3 fiber, Type 4 and Type 5 fibers are obtained in order to ensure single-mode operation, while the zero flattened dispersion characteristics of the fiber are compromised. Among the newly proposed fibers, Type 4 fiber offers a very low ITU-T cutoff wavelength of $$1.33~\upmu \hbox {m}$$ 1.33 μ m , whereas in the case of Type 5 fiber it is $$1.38~\upmu \hbox {m}$$ 1.38 μ m . Moreover, Type 4 and Type 5 fibers have good nonlinear coefficients of $$12.26\hbox { W}^{-1}\,\hbox {km}^{-1}$$ 12.26 W - 1 km - 1 and $$11.45\hbox { W}^{-1}\,\hbox {km}^{-1}$$ 11.45 W - 1 km - 1 , respectively. By virtue of the proposed optimized index profile, an insensitive behavior toward bending is displayed by Type 3, Type 4 and Type 5 fibers. In addition, Type 4 fiber provides a better splice loss of 0.25 dB.

Journal

Photonic Network CommunicationsSpringer Journals

Published: May 14, 2016

References

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