A Novel Dynamic Physical Layer Impairment-Aware Routing and Wavelength Assignment (PLI-RWA) Algorithm for Mixed Line Rate (MLR) Wavelength Division Multiplexed (WDM) Optical Networks

Sridhar Iyer

doi:10.1515/joc-2015-0018

Article

A Novel Dynamic Physical Layer Impairment-Aware Routing and Wavelength Assignment (PLI-RWA) Algorithm for Mixed Line Rate (MLR) Wavelength Division Multiplexed (WDM) Optical Networks

Sridhar Iyer

Published/Copyright: April 14, 2016

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From the journal Journal of Optical Communications Volume 37 Issue 4

Abstract

The ever-increasing global Internet traffic will inevitably lead to a serious upgrade of the current optical networks’ capacity. The legacy infrastructure can be enhanced not only by increasing the capacity but also by adopting advance modulation formats, having increased spectral efficiency at higher data rate. In a transparent mixed-line-rate (MLR) optical network, different line rates, on different wavelengths, can coexist on the same fiber. Migration to data rates higher than 10 Gbps requires the implementation of phase modulation schemes. However, the co-existing on-off keying (OOK) channels cause critical physical layer impairments (PLIs) to the phase modulated channels, mainly due to cross-phase modulation (XPM), which in turn limits the network’s performance. In order to mitigate this effect, a more sophisticated PLI-Routing and Wavelength Assignment (PLI-RWA) scheme needs to be adopted. In this paper, we investigate the critical impairment for each data rate and the way it affects the quality of transmission (QoT). In view of the aforementioned, we present a novel dynamic PLI-RWA algorithm for MLR optical networks. The proposed algorithm is compared through simulations with the shortest path and minimum hop routing schemes. The simulation results show that performance of the proposed algorithm is better than the existing schemes.

Keywords: physical layer impairments; physical layer impairment-aware routing and wavelength assignment; mixed-line-rate optical networks; XPM

PACS: 42.15. Eq; 42.81.Uv; 42.79 Sz

References

1. Nag A, Tornatore M, Mukherjee B. Optical network design with mixed line rates and multiple modulation formats. IEEE/OSA J Lightwave Technol 2010;28:466–75.10.1109/JLT.2009.2034396Search in Google Scholar

2. Batayneh M, Schupke DA, Hoffmann M, Kirstaedter A, Mukherjee B. Optical network design for a multiline-rate carrier-grade ethernet under transmission-range constraints. IEEE/OSA J Lightwave Technol 2008;26:121–30.10.1109/JLT.2007.913027Search in Google Scholar

3. Chowdhury P, Tornatore M, Nag A, Ip E, Wang T, Mukherjee B. On the design of energy-efficient mixed-line-rate (MLR) optical networks. IEEE/OSA J Lightwave Technol 2012;30:130–9.10.1109/JLT.2011.2177441Search in Google Scholar

4. Faure JP, Lavigne B, Bresson C, Bertran-Pardo O, Colomer AC, Canto R. 2010. 40 G and 100 G deployment on 10 G infrastructure: market overview and trends, coherent versus conventional technology. In Proc. IEEE Optical Fiber Communication/National Fiber Optic Engineers Conf., no. OThE3, San Diego, USA.10.1364/OFC.2010.OThE3Search in Google Scholar

5. Xia TJ. et al. 2008. Multi-rate (111-Gb/s, 2×43-Gb/s, and 8×10.7-Gb/s) transmission at 50-GHz channel spacing over 1040-km field-deployed fiber. In Proc. 34th European Conf. Optical Communication, Brussels, Belgium, no.Th.2.E.2.Search in Google Scholar

6. Wuth T, Chbat M, Kamalov V. 2008. Multi-rate (100 G/40 G/10 G) transport over deployed optical network. In: Opt. Fiber Commun. (OFC) Collocated Nat. Fiber Opt. Eng. Conf. (OFC/NFOEC), USA, 1–9.Search in Google Scholar

7. Mukherjee B. Optical WDM networks. Berlin: Springer, 2006.Search in Google Scholar

8. Ramaswami R, Sivarajan KN, Sasaki GH. Optical networks: a practical perspective. Amsterdam: Elsevier, 2010.Search in Google Scholar

9. Agrawal G. Fiber-optic communication systems. London: John Wiley & Sons, 2010.10.1002/9780470918524Search in Google Scholar

10. Singh SP, Sengar S, Bajpai R, Iyer S. Next-generation variable-line-rate optical WDM networks: issues and challenges. J Opt Commun 2013;34:331–50.10.1515/joc-2013-0050Search in Google Scholar

11. Christodoulopoulos K, Manousakis K, Varvarigos E. Reach adapting algorithms for mixed line rate WDM transport networks. IEEE/OSA J Lightwave Technol 2011;29:3350–63.10.1109/JLT.2011.2167596Search in Google Scholar

12. Sambo N, Secondini M, Cugini F, Bottari G, Iovanna P. Modeling and distributed provisioning in 10–40–100-Gb/s multirate wavelength switched optical networks. IEEE/OSA J Lightwave Technol 2011;29:1248–57.10.1109/JLT.2011.2122245Search in Google Scholar

13. Bononi A, Bertolini M. Cross-phase modulation induced by OOK channels on higher-rate DQPSK and coherent QPSK channels. IEEE/OSA J Lightwave Technol 2009;27:3974–83.10.1109/JLT.2009.2021537Search in Google Scholar

Received: 2015-3-5

Accepted: 2016-2-15

Published Online: 2016-4-14

Published in Print: 2016-12-1

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Articles in the same Issue

https://doi.org/10.1515/joc-2015-0018

Keywords for this article

physical layer impairments; physical layer impairment-aware routing and wavelength assignment; mixed-line-rate optical networks; XPM