Abstract

With the growth of traffic volume and the emergence of various new applications, future telecom networks are expected to be increasingly heterogeneous with respect to applications supported and underlying technologies employed. To address this heterogeneity, it may be most cost effective to set up different lightpaths at different bit rates in such a backbone telecom mesh network employing optical wavelength-division multiplexing. This approach can be cost effective because low-bit-rate services will need less grooming (i.e., less multiplexing with other low-bit-rate services onto high-capacity wavelengths), while a high-bit-rate service can be accommodated directly on a wavelength itself. Optical networks with mixed line rates (MLRs), e.g., 10/40/100Gb/s over different wavelength channels, are a new networking paradigm. The unregenerated reach of a lightpath depends on its line rate. So, the assignment of a line rate to a lightpath is a tradeoff between its capacity and transparent reach. Thus, based on their signal-quality constraints (threshold bit error rate), intelligent assignment of line rates to lightpaths can minimize the need for signal regeneration. This constraint on the transparent reach based on threshold signal quality can be relaxed by employing more advanced modulation formats, but with more investment. We propose a design method for MLR optical networks with transceivers employing different modulation formats. Our results demonstrate the tradeoff between a transceiver's cost and its optical reach in overall network design.

© 2010 IEEE

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  1. J. M. Simmons, "On determining the optimal optical reach for a long-haul network," IEEE/OSA J. Lightw. Technol. 23, 1039-1048 (2005).
  2. J. Berthold, A. A. M. Saleh, L. Blair, J. M. Simmons, "Optical networking: Past, present, and future," IEEE/OSA J. Lightw. Technol. 26, 1104-1118 (2008).
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  6. T. Wuth, M. Chbat, V. Kamalov, "Multi-rate (100G/40G/10G) transport over deployed optical networks," Nat. Fiber Opt. Eng. Conf., OSA Tech. Dig. (CD) San DiegoCA (2008).
  7. P. J. Winzer, R.-J. Essiambre, "Advanced modulation formats for high-capacity optical transport networks," IEEE/OSA J. Lightw. Technol. 24, 4711-4728 (2006).
  8. K. Clarke, T. Anderson, S. D. Dods, "Monitoring of multiple modulation formats using asynchronous delay-tap sampling," Proc. COIN-ACOFT (2007) pp. 1-3.
  9. A. Tan, E. Pincemine, "Performance comparison of duobinary and DQPSK modulation formats for mixed 10/40-Gb/s WDM transmission on SMF and LEAF fibers," Conf. Lasers Electro-Opt. (CLEOS) BaltimoreMD (2007).
  10. A. Nag, M. Tornatore, B. Mukherjee, "Optical network design with mixed line rates and multiple modulation formats," OFC/NFOEC San DiegoCA (2009) Post-deadline Papers.
  11. A. Lemus, Optical Digital Communications Technology and Modulation Formats (2008) http://www.nsc.liu.se/nsc08/pres/lemus.pdf.
  12. C. Matsumoto, Nortel Rolls on With 40-Gig (2008) http://www.lightreading.com/document.asp?doc_id=162934.
  13. A. Nag, M. Tornatore, "Impact of channel spacing on the design of a mixed-line-rate optical network," Advanced Networks and Telecommunication Systems (ANTS) (2009).
  14. F. Leplingard, A. Morea, T. Zami, N. Brogard, "Interest of an adaptive margin for the quality of transmission estimation for lightpath establishment," OFC/NFOEC San DiegoCA (2009).
  15. I. Roudas, N. Antoniades, T. Otani, T. E. Stern, R. E. Wagner, D. Q. Chowdhury, "Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks," IEEE/OSA J. Lightw. Technol. 20, 921-936 (2002).
  16. S. D. Dods, T. B. Anderson, "Calculation of bit-error rates and power penalties due to incoherent crosstalk in optical networks using Taylor series expansions," IEEE/OSA J. Lightw. Technol. 23, 1828-1837 (2005).
  17. B. Ramamurthy, D. Datta, H. Feng, J. Heritage, B. Mukherjee, "Impact of transmission impairments on teletraffic performance of wavelength-routed optical networks," IEEE/OSA J. Lightw. Technol. 17, 1713-1723 (1999).
  18. D. Datta, B. Ramamurthy, H. Feng, J. Heritage, B. Mukherjee, "BER-based call admission in wavelength-routed optical networks," Proc. OFC (1998) pp. 92-93.
  19. E. Forestieri, G. Prati, "Novel optical line codes tolerant to fiber chromatic dispersion," IEEE/OSA J. Lightw. Technol. 11, 1675-1684 (2001).
  20. C. D. Cantrell, "Transparent optical metropolitan area network," 16th Annu. Meeting IEEE/Laser Electro Opt. Soc. TucsonAZ (2003).
  21. L. E. Miller, J. S. Lee, "BER expressions for differentially detected $\pi/4$ DQPSK modulation," IEEE Trans. Commun. 46, 71-81 (1998).
  22. J. G. Proakis, Digital Communications (McGraw-Hill, 2001).
  23. J. M. Simmons, Optical Network Design and Planning (Springer-Verlag, 2008).
  24. A. Gumaste, N. Ghani, "Reach optimized architecture for multi-rate transport system (ROAMTS): One size does not fit all," OFC/NFOEC San DiegoCA (2009).
  25. M. Kiese, M. Schuster, "Exploiting transponder performance in optical OFDM networks," OFC/NFOEC San DiegoCA (2009).

2008 (2)

J. Berthold, A. A. M. Saleh, L. Blair, J. M. Simmons, "Optical networking: Past, present, and future," IEEE/OSA J. Lightw. Technol. 26, 1104-1118 (2008).

M. Batayneh, D. A. Schupke, M. Hoffmann, A. Kirstaedter, B. Mukherjee, "Optical network design for a multiline-rate carrier-grade ethernet under transmission-range constraints," IEEE/OSA J. Lightw. Technol. 26, 121-130 (2008).

2006 (1)

P. J. Winzer, R.-J. Essiambre, "Advanced modulation formats for high-capacity optical transport networks," IEEE/OSA J. Lightw. Technol. 24, 4711-4728 (2006).

2005 (2)

S. D. Dods, T. B. Anderson, "Calculation of bit-error rates and power penalties due to incoherent crosstalk in optical networks using Taylor series expansions," IEEE/OSA J. Lightw. Technol. 23, 1828-1837 (2005).

J. M. Simmons, "On determining the optimal optical reach for a long-haul network," IEEE/OSA J. Lightw. Technol. 23, 1039-1048 (2005).

2002 (1)

I. Roudas, N. Antoniades, T. Otani, T. E. Stern, R. E. Wagner, D. Q. Chowdhury, "Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks," IEEE/OSA J. Lightw. Technol. 20, 921-936 (2002).

2001 (1)

E. Forestieri, G. Prati, "Novel optical line codes tolerant to fiber chromatic dispersion," IEEE/OSA J. Lightw. Technol. 11, 1675-1684 (2001).

1999 (1)

B. Ramamurthy, D. Datta, H. Feng, J. Heritage, B. Mukherjee, "Impact of transmission impairments on teletraffic performance of wavelength-routed optical networks," IEEE/OSA J. Lightw. Technol. 17, 1713-1723 (1999).

1998 (1)

L. E. Miller, J. S. Lee, "BER expressions for differentially detected $\pi/4$ DQPSK modulation," IEEE Trans. Commun. 46, 71-81 (1998).

IEEE Trans. Commun. (1)

L. E. Miller, J. S. Lee, "BER expressions for differentially detected $\pi/4$ DQPSK modulation," IEEE Trans. Commun. 46, 71-81 (1998).

IEEE/OSA J. Lightw. Technol. (8)

E. Forestieri, G. Prati, "Novel optical line codes tolerant to fiber chromatic dispersion," IEEE/OSA J. Lightw. Technol. 11, 1675-1684 (2001).

P. J. Winzer, R.-J. Essiambre, "Advanced modulation formats for high-capacity optical transport networks," IEEE/OSA J. Lightw. Technol. 24, 4711-4728 (2006).

J. M. Simmons, "On determining the optimal optical reach for a long-haul network," IEEE/OSA J. Lightw. Technol. 23, 1039-1048 (2005).

J. Berthold, A. A. M. Saleh, L. Blair, J. M. Simmons, "Optical networking: Past, present, and future," IEEE/OSA J. Lightw. Technol. 26, 1104-1118 (2008).

M. Batayneh, D. A. Schupke, M. Hoffmann, A. Kirstaedter, B. Mukherjee, "Optical network design for a multiline-rate carrier-grade ethernet under transmission-range constraints," IEEE/OSA J. Lightw. Technol. 26, 121-130 (2008).

I. Roudas, N. Antoniades, T. Otani, T. E. Stern, R. E. Wagner, D. Q. Chowdhury, "Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks," IEEE/OSA J. Lightw. Technol. 20, 921-936 (2002).

S. D. Dods, T. B. Anderson, "Calculation of bit-error rates and power penalties due to incoherent crosstalk in optical networks using Taylor series expansions," IEEE/OSA J. Lightw. Technol. 23, 1828-1837 (2005).

B. Ramamurthy, D. Datta, H. Feng, J. Heritage, B. Mukherjee, "Impact of transmission impairments on teletraffic performance of wavelength-routed optical networks," IEEE/OSA J. Lightw. Technol. 17, 1713-1723 (1999).

Other (16)

D. Datta, B. Ramamurthy, H. Feng, J. Heritage, B. Mukherjee, "BER-based call admission in wavelength-routed optical networks," Proc. OFC (1998) pp. 92-93.

A. Nag, M. Tornatore, "Transparent optical network design with mixed line rates," IEEE Adv. Netw. Telecommun. Syst. (ANTS) MumbaiIndia (2008).

C. Meusburger, D. A. Schupke, "Optimizing the migration of channels with higher bit-rates," OFC/NFOEC San DiegoCA (2009) Post-deadline Papers.

T. Wuth, M. Chbat, V. Kamalov, "Multi-rate (100G/40G/10G) transport over deployed optical networks," Nat. Fiber Opt. Eng. Conf., OSA Tech. Dig. (CD) San DiegoCA (2008).

K. Clarke, T. Anderson, S. D. Dods, "Monitoring of multiple modulation formats using asynchronous delay-tap sampling," Proc. COIN-ACOFT (2007) pp. 1-3.

A. Tan, E. Pincemine, "Performance comparison of duobinary and DQPSK modulation formats for mixed 10/40-Gb/s WDM transmission on SMF and LEAF fibers," Conf. Lasers Electro-Opt. (CLEOS) BaltimoreMD (2007).

A. Nag, M. Tornatore, B. Mukherjee, "Optical network design with mixed line rates and multiple modulation formats," OFC/NFOEC San DiegoCA (2009) Post-deadline Papers.

A. Lemus, Optical Digital Communications Technology and Modulation Formats (2008) http://www.nsc.liu.se/nsc08/pres/lemus.pdf.

C. Matsumoto, Nortel Rolls on With 40-Gig (2008) http://www.lightreading.com/document.asp?doc_id=162934.

A. Nag, M. Tornatore, "Impact of channel spacing on the design of a mixed-line-rate optical network," Advanced Networks and Telecommunication Systems (ANTS) (2009).

F. Leplingard, A. Morea, T. Zami, N. Brogard, "Interest of an adaptive margin for the quality of transmission estimation for lightpath establishment," OFC/NFOEC San DiegoCA (2009).

C. D. Cantrell, "Transparent optical metropolitan area network," 16th Annu. Meeting IEEE/Laser Electro Opt. Soc. TucsonAZ (2003).

J. G. Proakis, Digital Communications (McGraw-Hill, 2001).

J. M. Simmons, Optical Network Design and Planning (Springer-Verlag, 2008).

A. Gumaste, N. Ghani, "Reach optimized architecture for multi-rate transport system (ROAMTS): One size does not fit all," OFC/NFOEC San DiegoCA (2009).

M. Kiese, M. Schuster, "Exploiting transponder performance in optical OFDM networks," OFC/NFOEC San DiegoCA (2009).

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