Abstract

Metro/regional networks are beginning the transition from 10 to 100Gb/s on dispersion unmanaged optical links. Long-haul networks have a head start in the move to all-coherent networking and have popularized route-and-select-based node designs and colorless, directionless, and contentionless add/drop structures. Both metro and long-haul coherent networks are expected to support future 400Gb/s transmission. This paper examines the node architecture and 400G transmission options for coherent metro networks with the distinctive characteristics of short spans and high optical filtering penalties. Reach results are derived for signals based on 100, 200, and 400Gb/s superchannels. Additionally, blocking probabilities are reported for two approaches to nodal add/drop architecture. The results provide a clear direction for metro/regional node and network architecture decisions.

© 2013 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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2012 (2)

S. Gringeri, E. B. Basch, and T. J. Xia, “Technical considerations for supporting data rates beyond 100 Gb/s,” IEEE Commun. Mag., vol.  50, no. 2, pp. S21–S30, Feb. 2012.
[CrossRef]

Y. Li, L. Gao, G. Shen, and L. Peng, “Impact of ROADM colorless, directionless, and contentionless (CDC) features on optical network performance,” IEEE J. Opt. Commun. Netw., vol.  4, no. 11, pp. B58–B67, Nov. 2012.
[CrossRef]

2011 (1)

2010 (3)

S. Tibuleac and M. Filer, “Transmission impairments in DWDM networks with reconfigurable optical add-drop multiplexers,” J. Lightwave Technol., vol.  28, no. 4, pp. 557–598, Feb. 2010.
[CrossRef]

T. A. Strasser and J. L. Wagener, “Wavelength-selective switches for ROADM applications,” IEEE J. Sel. Top. Quantum Electron., vol.  16, no. 5, pp. 1150–1157, Sept. 2010.
[CrossRef]

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

2009 (1)

Aono, Y.

P. N. Ji and Y. Aono, “Colorless and directionless multi-degree reconfigurable optical add/drop multiplexers,” in Proc. of 19th Wireless and Optical Communications Conf., 2010.

Basch, B.

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

Basch, E. B.

S. Gringeri, E. B. Basch, and T. J. Xia, “Technical considerations for supporting data rates beyond 100 Gb/s,” IEEE Commun. Mag., vol.  50, no. 2, pp. S21–S30, Feb. 2012.
[CrossRef]

Bertolini, M.

Bertran-Pardo, O.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

Bigo, S.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

Bihon, D.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

Bononi, A.

Bosco, G.

Carena, A.

Charlet, G.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

Curri, V.

Egorov, R.

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

Feuer, M. D.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

Filer, M.

Forghieri, F.

Gao, L.

Y. Li, L. Gao, G. Shen, and L. Peng, “Impact of ROADM colorless, directionless, and contentionless (CDC) features on optical network performance,” IEEE J. Opt. Commun. Netw., vol.  4, no. 11, pp. B58–B67, Nov. 2012.
[CrossRef]

Gringeri, S.

S. Gringeri, E. B. Basch, and T. J. Xia, “Technical considerations for supporting data rates beyond 100 Gb/s,” IEEE Commun. Mag., vol.  50, no. 2, pp. S21–S30, Feb. 2012.
[CrossRef]

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

Ji, P. N.

P. N. Ji and Y. Aono, “Colorless and directionless multi-degree reconfigurable optical add/drop multiplexers,” in Proc. of 19th Wireless and Optical Communications Conf., 2010.

Kim, I.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

Li, Y.

Y. Li, L. Gao, G. Shen, and L. Peng, “Impact of ROADM colorless, directionless, and contentionless (CDC) features on optical network performance,” IEEE J. Opt. Commun. Netw., vol.  4, no. 11, pp. B58–B67, Nov. 2012.
[CrossRef]

Mardoyan, H.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

Palacharla, P.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

Peng, L.

Y. Li, L. Gao, G. Shen, and L. Peng, “Impact of ROADM colorless, directionless, and contentionless (CDC) features on optical network performance,” IEEE J. Opt. Commun. Netw., vol.  4, no. 11, pp. B58–B67, Nov. 2012.
[CrossRef]

Poggiolini, P.

Renaudier, J.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

Shen, G.

Y. Li, L. Gao, G. Shen, and L. Peng, “Impact of ROADM colorless, directionless, and contentionless (CDC) features on optical network performance,” IEEE J. Opt. Commun. Netw., vol.  4, no. 11, pp. B58–B67, Nov. 2012.
[CrossRef]

Shukla, V.

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

Strasser, T. A.

T. A. Strasser and J. L. Wagener, “Wavelength-selective switches for ROADM applications,” IEEE J. Sel. Top. Quantum Electron., vol.  16, no. 5, pp. 1150–1157, Sept. 2010.
[CrossRef]

Tibuleac, S.

Tran, P.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

Wagener, J. L.

T. A. Strasser and J. L. Wagener, “Wavelength-selective switches for ROADM applications,” IEEE J. Sel. Top. Quantum Electron., vol.  16, no. 5, pp. 1150–1157, Sept. 2010.
[CrossRef]

Wang, X.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

Way, W. I.

W. I. Way, “Optimum architecture for M×N multicast switch-based colorless, directionless, contentionless, and flexible-grid ROADM,” in Proc. OFC, Mar. 2012, paper NW3F.5.

Woodward, S. L.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

Xia, T. J.

S. Gringeri, E. B. Basch, and T. J. Xia, “Technical considerations for supporting data rates beyond 100 Gb/s,” IEEE Commun. Mag., vol.  50, no. 2, pp. S21–S30, Feb. 2012.
[CrossRef]

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

IEEE Commun. Mag. (2)

S. Gringeri, B. Basch, V. Shukla, R. Egorov, and T. J. Xia, “Flexible architectures for optical transport nodes and networks,” IEEE Commun. Mag., vol.  48, no. 7, pp. 40–50, July 2010.
[CrossRef]

S. Gringeri, E. B. Basch, and T. J. Xia, “Technical considerations for supporting data rates beyond 100 Gb/s,” IEEE Commun. Mag., vol.  50, no. 2, pp. S21–S30, Feb. 2012.
[CrossRef]

IEEE J. Opt. Commun. Netw. (1)

Y. Li, L. Gao, G. Shen, and L. Peng, “Impact of ROADM colorless, directionless, and contentionless (CDC) features on optical network performance,” IEEE J. Opt. Commun. Netw., vol.  4, no. 11, pp. B58–B67, Nov. 2012.
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

T. A. Strasser and J. L. Wagener, “Wavelength-selective switches for ROADM applications,” IEEE J. Sel. Top. Quantum Electron., vol.  16, no. 5, pp. 1150–1157, Sept. 2010.
[CrossRef]

J. Lightwave Technol. (3)

Other (4)

P. N. Ji and Y. Aono, “Colorless and directionless multi-degree reconfigurable optical add/drop multiplexers,” in Proc. of 19th Wireless and Optical Communications Conf., 2010.

W. I. Way, “Optimum architecture for M×N multicast switch-based colorless, directionless, contentionless, and flexible-grid ROADM,” in Proc. OFC, Mar. 2012, paper NW3F.5.

P. Palacharla, X. Wang, I. Kim, D. Bihon, M. D. Feuer, and S. L. Woodward, “Blocking performance in dynamic optical networks based on colorless, non-directional ROADMs,” in Proc OFC, Mar. 2011, paper JWA8.

J. Renaudier, O. Bertran-Pardo, H. Mardoyan, P. Tran, G. Charlet, and S. Bigo, “Performance comparison of 40G and 100G coherent PDM-QPSK for upgrading dispersion managed legacy systems,” in Proc. OFC, Mar. 2009, paper NWD5.

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Figures (11)

Fig. 1.
Fig. 1.

North American metro network consisting of 104 nodes and 202 bidirectional fiber links, and a mean of 3.9 degrees/node.

Fig. 2.
Fig. 2.

Span loss histogram of thousands of deployed amplifiers showing majority of short metro spans.

Fig. 3.
Fig. 3.

400G transmission with single and dual carrier 16QAM and quad carrier QPSK (100G single-carrier QPSK also shown).

Fig. 4.
Fig. 4.

Optical filtering penalties of 400 and 100Gb/s. The spectral bandwidths used for the various signals are those shown in Fig. 3.

Fig. 5.
Fig. 5.

Nonlinear penalties favor fewer carriers and QPSK.

Fig. 6.
Fig. 6.

Colorless-directionless (CD) add/drop architecture consisting of a directionless switching module and colorless fan-out module (shown with broadcast-and-select line system).

Fig. 7.
Fig. 7.

Colorless-directionless-contentionless (CDC) add/drop architecture based on multicast switch and EDFA array (shown with route-and-select line system).

Fig. 8.
Fig. 8.

Network reach dependency on add/drop OSNR, e.g., add/drop subsystem OSNR of 28 dB allows 1×400G 16 QAM signal to cascade 10 spans (route and select assumed).

Fig. 9.
Fig. 9.

Simulation progression: (a) network and add/drop loading and (b) CD and CDC hops growth as load increases.

Fig. 10.
Fig. 10.

Blocking as a function of add/drop loading. CD blocking is marginally worse than CDC at high loads.

Fig. 11.
Fig. 11.

Reach results in cascaded 10 dB spans for both dispersion managed and unmanaged networks.