A survey on OFDM-based elastic core optical networking

IEEE Communications Surveys and Tutorials

Volumn 15, Issue 1, 2013, Pages 65-87

  Zhang, Guoying ^a   De Leenheer, Marc ^b   Morea, Annalisa ^c   Mukherjee, Biswanath ^d  

^a China Academy of Telecom Research   (China)

^b GHENT UNIVERSITY   (Belgium)

^c LUCENT TECHNOLOGIES   (United States)

^d University of California   (United States)

Author keywords

Bandwidth Variable Wavelength Cross Connect (BV WXC); Data Rate Bandwidth Variable Transponder; Elastic Optical Network; Network Virtualization; Optical Orthogonal Frequency Division Multiplexing (O OFDM); Routing and Spectrum Allocation (RSA); Survivability; Traffic Grooming

Indexed keywords

DATA RATES; ELASTIC OPTICAL NETWORKS; NETWORK VIRTUALIZATION; ROUTING AND SPECTRUM ALLOCATIONS (RSA); SURVIVABILITY; TRAFFIC GROOMING; WAVELENGTH CROSS-CONNECT;

COMMUNICATION SYSTEMS; FIBER OPTIC NETWORKS; NETWORK ARCHITECTURE; OPTICAL FIBER COMMUNICATION; SURVEYS; TECHNOLOGY;

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING;

EID: 84873726189     PISSN: None     EISSN: 1553877X     Source Type: Journal    
DOI: 10.1109/SURV.2012.010912.00123     Document Type: Article

References (120)

1. A. A. M. Saleh and J. M. Simmons, "Technology and Architecture to Enable the Explosive Growth of the Internet" IEEE Commun. Mag., vol. 49, no. 1, pp.126-132, January 2011.
2. M. Jinno, H. Takara, and B. Kozicki, "Dynamic optical mesh networks: drivers, challenges and solutions for the future," Proc. ECOC2009, Paper 7.7.4.
3. W. Shieh and I. Djordjevic, "OFDM for Optical Communications," Academic Press, Elsevier, 2010.
4. K. Sato and H. Hasegawa, "Optical Networking Technologies That Will Create Future Bandwidth-Abundant Networks [Invited]," Journal of Optical Communications and Networking, vol. 1, no. 2, pp. 81-93, July 2009.
5. R. S. Tucker, "Optical packet switching: A reality check," Optical Switching and Networking, vol. 5, no. 1, pp. 2-9, March 2008. (Pubitemid 351249263)
6. M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, "Spectrum-Efficient and Scalable Elastic Optical Path Network: Architecture, Benefits, and Enabling Technologies," IEEE Commun. Mag., vol. 47, no. 11, pp. 66-73, November 2009.
7. A. B. Narasimhamurthy, M. K. Banavar, and C. Tepedelenlioglu, "OFDM Systems for Wireless Communications," Morgan & Claypool Publishers, 2010.
8. S. B. Weinsten and P. M. Ebert, "Data transmission by frequencydivision multiplexing using the discrete Fourier transform," IEEE Trans. Commun., vol. 19, no. 5, pp. 628-634, October 1971.
9. W. Shieh, H. Bao, and Y. Tang, "Coherent optical OFDM: theory and design," Optics Express, vol. 16, no. 2, pp. 841-859, 2008. (Pubitemid 351162220)
10. A. Sano, E. Yamada, H. Masuda, E. Yamazaki, T. Kobayashi, E. Yoshida,Y. Miyamoto, R. Kudo, K. Ishihara, and Y. Takatori, "No- Guard-Interval Coherent Optical OFDM for 100-Gb/s Long-Haul WDM Transmission," IEEE/OSA J. Lightwave Technol., vol. 27, no. 16, pp. 3705-3713, August 2009.
11. M. K. Ozdemir and H. Arslan, "Channel estimation for wireless OFDM systems," IEEE Communications Surveys & Tutorials, vol. 9, no. 2, pp. 18-48, Second Quarter 2007.
12. Q. Yang, W. Shieh, and Y. Ma, "Bit and Power Loading for Coherent Optical OFDM," IEEE Photonics Technol. Lett., vol. 20, no. 15, pp. 1305-1307, August 2008.
13. A. J. Lowery and J. Armstrong, "Orthogonal-frequency-division multiplexing for dispersion compensation of long-haul optical systems," Optics Express, vol. 14, no. 6, pp. 2079-2084, March 2006.
14. W. Shieh and C. Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electronics Letters, vol. 42, no. 10, pp. 587- 589, May 2006. (Pubitemid 43742393)
15. J. M. Tang, P. M. Lane, and K. A. Shore, "Transmission Performance of Adaptively Modulated Optical OFDM Signals in Multimode Fiber Links," IEEE Photonics Technol. Lett., vol. 18, no. 1, pp. 205-207, January, 2006. (Pubitemid 46542538)
16. J. Lee, F. Breyer, S. Randel, J. Zeng, F. Huijskens, H. P. van den Boom, A. M. Koonen and N. Hanik, "24-Gb/s transmission over 730 m of multimode fiber by direct modulation of 850-nm VCSEL using discrete multi-tone modulation," Proc. OFC/NFOEC, 2007, Paper PDP6.
17. S. C. J. Lee, F. Breyer, S. Randel, O. Ziemann, H. P. A. van den Boom, and A. M. J. Koonen, "Low-Cost and Robust 1-Gbit/s Plastic Optical Fiber Link Based on Light-Emitting Diode Technology," Proc. OFC/NFOEC, 2008.
18. D. Hsu, C. Wei, H. Chen, W. Li, and J. Chen, "Cost-effective 33- Gbps intensity modulation direct detection multi-band OFDM LR-PON system employing a 10-GHz-based transceiver," Optics Express, vol. 19, no. 18, August 2011.
19. O. Gonzalez, R. Perez-Jimenez, S. Rodriguez, J. Rabadan, and A. Ayala, "Adaptive OFDM system for communications over the indoor wireless optical channel," IEEE Proceedings-Optoelectronics, vol. 153, pp. 139-144, 2006. (Pubitemid 44221963)
20. J. Grubor, V. Jungnickel, and K. D. Langer, "Adaptive Optical Wireless OFDM System with Controlled Asymmetric Clipping," Proc. Forty- First Asilomar Conference on Signals, Systems and Computers (ACSSC), pp. 1896-1902, November 2007.
21. W. Shieh, "OFDM for Flexible High-Speed Optical Networks," Journal of Lightwave Technology, vol. 29, no. 10, pp. 1560-1577, May 2011.
22. J. Armstrong, "OFDM for Optical Communications (Invited Tutorial)," IEEE/OSA J. Lightwave Technol., vol. 27, no. 3, pp. 525-526, 2009.
23. V. Chakravarthy, A. S. Nunez, and J. P. Stephens, A. K. Shaw, M. A. Temple, "TDCS, OFDM, and MC-CDMA: A Brief Tutorial," IEEE Commun. Mag., vol. 43, no. 9, pp. S11-S16, September 2005. (Pubitemid 41638078)
24. S. L. Jansen, I. Morita, T. C. W. Schenk, and H. Tanaka, "121.9-Gb/s PDM-OFDM Transmission With 2-b/s/Hz Spectral Efficiency Over 1000 km of SSMF," Journal of Lightwave Technology, vol. 27, no. 3, pp. 177-188, February 2009.
25. T. Kobayashi, A. Sano, E. Yamada, Y. Miyamoto, H. Takara, and A. Takada, "Electro-optically subcarrier multiplexed 110Gb/s OFDM signal transmission over 80 km SMF without dispersion compensation," Proc. OECC 2007, Paper PD1-6.
26. S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, and H. Tanaka, "Coherent Optical 25.8-Gb/s OFDM Transmission Over 4160-km SSMF," IEEE/OSA J. Lightwave Technol., vol. 26, no. 1, pp. 6-15, January 2008. (Pubitemid 351384919)
27. S. L. Jansen, I. Morita, and H. Tanaka, "10×121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1,000 km of SSMF," Proc. OFC/NFOEC 2008, Paper PDP 2.
28. Y. Ma, Q. Yang, Y. Tang, S. Chen, and W. Shieh, "1-Tb/s Single- Channel Coherent Optical OFDM Transmission With Orthogonal-Band Multiplexing and Subwavelength Bandwidth Access," IEEE/OSA J. Lightwave Technol., vol. 28, no. 4, February 2010.
29. W. Shieh, Q. Yang, and Y. Ma, "107 Gb/s coherent optical OFDM transmission over 1000-km SSMF using orthogonal band multiplexing," Optics Express, vol. 16, no. 9, pp. 6378-6386, April 2008. (Pubitemid 351623351)
30. I. B. Djordjevic and B. Vasic, "Orthogonal frequency division multiplexing for high-speed optical transmission," Optics Express, vol. 14, no. 9, pp. 3767-3775, May 2006.
31. R. Dischler and F. Buchali, "Transmission of 1.2 Tb/s continuous waveband PDM-OFDM-FDM signal with spectral efficiency of 3.3 bit/s/Hz over 400 km of SSMF," Proc. OFC/NFOEC 2009, Paper PDP C2.
32. S.L. Jansen, I. Morita, T. C. W. Schenk, D. van den Borne, and H. Tanaka, "Optical OFDM - A Candidate for Future Long-Haul Optical Transmission Systems," Proc. OFC/NFOEC 2008, paper OMU3.
33. X. Liu, S. Chandrasekhar, B. Zhu, P. J. Winzer, A. H. Gnauck, and D. W. Peckham, "448-Gb/s Reduced-Guard-Interval CO-OFDM Transmission Over 2000 km of Ultra-Large-Area Fiber and Five 80- GHz-Grid ROADMs," IEEE/OSA J. Lightwave Technol., vol. 29, no. 4, February 2011.
34. C. Chen, Q. Zhuge, and D. V. Plant, "Zero-guard-interval coherent optical OFDM with overlapped frequency-domain CD and PMD equalization," Optics Express, vol. 19, no. 8, April 2011.
35. A. Sano, H. Masuda, E. Yoshida, T. Kobayashi, E. Yamada, Y. Miyamoto, F. Inuzuka, Y. Hibino, Y. Takatori, K. Hagimoto, T.Yamada, and Y. Sakamaki, "30×100 Gb/s all-optical OFDM transmission over 1300 km SMF with 10 ROADM nodes," Proc. ECOC 2007, Paper PD1.7.
36. H. Sanjoh, E. Yamada, and Y. Yoshikuni, "Optical orthogonal frequency division multiplexing using frequency/time domain filtering for high spectral efficiency up to 1 bit/s/Hz," Proc. OFC/NFOEC 2002, paper ThD1.
37. K. Lee, C. T. D. Thai, and J.-K. K. Rhee, "All optical discrete Fourier transform processor for 100 Gbps OFDM transmission," Optics Express, vol. 16, no. 6, pp. 4023-4028, March 2008. (Pubitemid 351434376)
38. K. Yonenaga, A. Sano, E. Yamazaki, F.Inuzuka, Y. Miyamoto, A. Takada, and T. Yamada, "100 Gbit/s All-Optical OFDM Transmission Using 4×25 Gbit/s Optical Duobinary Signals with Phase-Controlled Optical Sub-Carriers," Proc. OFC/NFOEC 2008, Paper JThA48.
39. D. Hillerkuss, R. Schmogrow, T. Schellinger, M. Jordan, M. Winter, G. Huber, T. Vallaitis, R. Bonk, P. Kleinow, F. Frey, M. Roeger, S. Koenig, A. Ludwig, A. Marculescu, J. Li, M. Hoh, M. Dreschmann, J. Meyer, S. Ben Ezra, N. Narkiss, B. Nebendahl, F. Parmigiani, P. Petropoulos, B. Resan, A. Oehler, K. Weingarten, T. Ellermeyer, J. Lutz, M. Moeller, M. Huebner1, J. Becker, C. Koos, W. Freude, and J. Leuthold, "26 Tbit s-1 line-rate super-channel transmission utilizing all-optical fast Fourier transform processing," Nature Photonics, vol. 5, pp. 364-371, June 2011.
40. D. Hillerkuss, M. Winter, M. Teschke, A. Marculescu, J. Li, G. Sigurdsson, K. Worms, S. Ben Ezra, N. Narkiss, W. Freude, and J. Leuthold, "Simple all-optical FFT scheme enabling Tbit/s real-time signal processing," Optics Express, vol. 18, no. 9, pp. 9324-9340, April 2010.
41. D. Hillerkuss, T. Schellinger, R. Schmogrow, M. Winter, T. Vallaitis, R. Bonk, A. Marculescu, J. Li1, M. Dreschmann, J. Meyer, S. Ben Ezra, N. Narkiss, B. Nebendahl, F. Parmigiani, P. Petropoulos, B. Resan, K. Weingarten, T. Ellermeyer, J. Lutz, M. Moller, M. Huebner, J. Becker, C. Koos, W. Freude, and J. Leuthold, "Single Source Optical OFDM Transmitter and Optical FFT Receiver Demonstrated at Line Rates of 5.4 and 10.8 Tbit/s," Proc. OFC/NFOEC 2010, paper PDPC1.
42. Y. Miyamoto, "Ultra High Capacity Transmission for Optical Transport Network," Proc. OFC/NFOEC 2011, paper OThX4.
43. E. Yamada, A. Sano, H. Masuda, E. Yamazaki, T. Kobayashi, E.Yoshida, K. Yonenaga, Y. Miyamoto, K. Ishihara, Y. Takatori, T. Yamada, and H. Yamazaki, "1 Tb/s (111 Gbit/s/ch×10 Ch) no-guardinterval CO-OFDM transmission over 2100 km DSF," Electronics Letters, vol. 44, no. 24, pp. 1417-1418, November 2008.
44. A. Sano, E. Yamada, H. Masuda, E. Yamazaki, T. Kobayashi, E. Yoshida, Y. Miyamoto, S. Matsuoka, R. Kudo, K. Ishihara, Y. Takatori, M. Mizoguchi, K. Okada, K. Hagimoto, H. Yamazaki, S. Kamei, and H. Ishii, "13.4-Tb/s (134×111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 3,600 km of SMF with 19-ps average PMD," Proc. ECOC 2008, Paper Th.3.E.1.
45. E. Yamada, A. Sano, H. Masuda, T. Kobayashi, E. Yoshida, Y. Miyamoto, Y. Hibino, K. Ishihara, Y. Takatori, K. Okada, K. Hagimoto, T. Yamada, and H. Yamazaki, "Novel no-guard-interval PDM CO-OFDM transmission in 4.1 Tb/s (55×88.8-Gb/s) DWDM link over 800 km SMF including 50-GHz spaced ROADM nodes," Proc. OFC/NFOEC 2008, Paper PDP8.
46. W. Shieh, X. Yi, and Y. Tang, "Transmission experiment of multigigabit coherent optical OFDM systems over 1000 km SSMF fiber," Electronics Letters, vol. 43, pp. 183-184, February 2007.
47. H. Takahashi, A. A. Amin, S. L. Jansen, I. Morita, and H. Tanaka, "Highly Spectrally Efficient DWDM Transmission at 7.0 b/s/Hz Using 8×65.1-Gb/s Coherent PDM-OFDM" IEEE/OSA J. Lightwave Technol., vol. 28, no. 4, pp. 406-414, February 2010.
48. T. J. Xia, G. A. Wellbrock, Y.-K. Huang, E. Ip, M. F. Huang, Y. Shao, T. Wang, Y. Aono, T. Tajima, S. Murakami, and M. Cvijetic, "Field Experiment with Mixed Line-Rate Transmission (112-Gb/s, 450- Gb/s, and 1.15-Tb/s) over 3,560 km of Installed Fiber Using Filterless Coherent Receiver and EDFAs Only," Proc. OFC/NFOEC 2011, Paper PDPA3.
49. A. J. Lowery, L. Du, and J. Armstrong, "Orthogonal frequency division multiplexing for adaptive dispersion compensation in long haul WDM systems," Proc. OFC/NFOEC 2006, Paper PDP 39.
50. D. F. Hewitt, "Orthogonal frequency division multiplexing using baseband optical single sideband for simpler adaptive dispersion compensation," Proc. OFC/NFOEC 2007, Paper OME7.
51. W. Peng, X. Wu, V. R. Arbab, B. Shamee, J. Y. Yang; L. C. Christen, K. M. Feng, A. E. Willner, and S. Chi, "Experimental demonstration of 340 km SSMF transmission using a virtual single sideband OFDM signal that employs carrier suppressed and iterative detection techniques," Proc. OFC/NFOEC 2008, Paper OMU1.
52. M. Schuster, S. Randel, C. A. Bunge, S. C. J. Lee, F. Breyer, B. Spinnler, and K. Petermann, "Spectrally efficient compatible singlesideband modulation for OFDM transmission with direct detection," IEEE Photonics Technol. Lett., vol. 20, no. 9, pp. 670-672, May 2008. (Pubitemid 351583548)
53. I. B. Djordjevic and B. Vasic, "Orthogonal frequency division multiplexing for high-speed optical transmission," Optics Express, vol. 14, no. 9, pp. 3767-3775, May 2006.
54. J. M. Tang and K. A. Shore, "Maximizing the transmission performance of adaptively modulated optical OFDM signals in multimodefiber links by optimizing analog-to-digital converters," IEEE/OSA J. Lightwave Technol., vol. 25, no. 3, pp. 787-798, March 2007. (Pubitemid 46585276)
55. X. Q. Jin, J. M. Tang, P. S. Spencer, K. A. Shore, "Optimization of adaptively modulated optical OFDM modems for multimode fiberbased local area networks [Invited]," OSA Journal of Optical Networking, vol. 7, no. 3, pp. 198-214, March 2008. (Pubitemid 351482849)
56. W. Shieh, X. Yi, Y. Ma, Y. Tang, "Theoretical and experimental study on PMD-supported transmission using polarization diversity in coherent optical OFDM systems," Optics Express, vol. 15, no. 16, pp. 9936-9947, August 2007. (Pubitemid 47230812)
57. W. Shieh, "High Spectral Efficiency Coherent Optical OFDM for 1 Tb/s Ethernet Transport," Proc. OFC/NFOEC 2009, Paper OWW1.
58. Y. Ma, W. Shieh, and Q. Yang, "Bandwidth-efficient 21.4 Gb/s coherent optical 22 MIMO OFDM transmission," Proc. OFC/NFOEC 2008, Paper JWA59.
59. A. F. Molisch and M. Z.Win, "MIMO systems with antenna selection," IEEE Microwave, vol. 5, no. 1, pp. 46-56, March 2004.
60. G. Charlet, J. Renaudier, H. Mardoyan, O. B. Pardo, F. Cerou, P. Tran, and S. Bigo, "12.8 Tbit/s transmission of 160 PDMQPSK (160240Gb/s) channel with coherent detection over 2,550km," Proc. ECOC 2007, Paper PD1.6.
61. A. J. Paulraj, D. A. Gore, R. U. Nabar, and H. Bolcskei, "An overview of MIMO communications-A key to gigabit wireless," Proc. IEEE, vol. 92, pp. 198-218, 2004.
62. W. Shieh, "PMD-supported coherent optical OFDM systems, "IEEE Photonics Technol. Lett., vol. 19, no. 3, pp. 134-136, February 2007. (Pubitemid 46344531)
63. S. L. Jansen, I. Morita, and H. Tanaka, "1652.5-Gb/s, 50-GHz spaced, OLMUX-CO-OFDM transmission over 4,160 km of SSMF enabled by MIMO processing," Proc. ECOC 2007, Paper PD1.3.
64. S. Chandrasekhar, X. Liu, E. C. Burrows, and L. L. Buhl, "Hybrid 107-Gb/s polarization-multiplexed DQPSK and 42.7-Gb/s DQPSK transmission at 1.4-bits/s/Hz spectral efficiency over 1280 km of SSMF and 4 bandwidth-managed ROADMs," Proc. ECOC 2007, Paper PD 1.9.
65. J. Proakis, "Digital Communications," McGraw Hill, 2000.
66. A. Klekamp, O. Rival, A. Morea, R. Dischler, and F. Buchali, "Transparent WDM Network with Bitrate Tunable Optical OFDM Transponders," Proc. OFC/NFOEC 2010, Paper NTuB5.
67. A. Nag, M. Tornatore, and B. Mukherjee, "Optical Network Design With Mixed Line Rates and Multiple Modulation Formats," IEEE/OSA J. Lightwave Technol., vol. 28, no. 4, pp. 466-475, February 2010.
68. 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.
69. W. Zheng, Y. Jin, W. Sun, W. Guo, and W. Hu, "On the Spectrum- Efficiency of Bandwidth-Variable Optical OFDM Transport Networks," Proc. OFC/NFOEC 2010, Paper OWR5.
70. M. Jinno, H. Takara, and B. Kozicki, "Concept and Enabling Technologies of Spectrum-Sliced Elastic Optical Path Network (SLICE)", Proc. Communications and Photonics Conference and Exhibition (ACP), November 2009, Paper FO2.
71. A. N. Patel, P. N. Ji, J. P. Jue, and T. Wang, "Routing, Wavelength Assignment, and Spectrum Allocation in Transparent Flexible Optical WDM (FWDM) Networks," Photonics in Switching, OSA Technical Digest 2010, Paper PDPWG1.
72. O. Rival and A. Morea, "Elastic Optical Networks with 25-100G Format-Versatile WDM Transmission Systems," Proc. OECC2010, Paper 7A2-3.
73. A. Nag, M. Tornatore, and B. Mukherjee, "Optical Network Design With Mixed Line Rates and Multiple Modulation Formats," IEEE/OSA J. Lightwave Technol., vol. 28, no. 4, pp. 466-475, February 2010.
74. K. Christodoulopoulos, I. Tomkos, and E. Varvarigos, "Spectrally/ Bitrate Flexible Optical Network Planning," Proc. ECOC 2010, Paper We.8.D.3.
75. K. Christodoulopoulos, I. Tomkos, and E. A. Varvarigos, "Routing and Spectrum Allocation in OFDM-based Optical Networks with Elastic Bandwidth Allocation," Proc. GlobeCom 2010.
76. M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, T. Yoshimatsu, T. Kobayashi, Y. Miyamoto, K. Yonenaga, A. Takada, O. Ishida, and S. Matsuoka, "Demonstration of Novel Spectrum-Efficient Elastic Optical Path Network with Per-Channel Variable Capacity of 40 Gb/s to Over 400 Gb/s," Proc. ECOC 2008, Paper Th.3.F.6.
77. K. Yonenaga, F. Inuzuka, S. Yamamoto, H. Takara, B. Kozicki, T. Yoshimatsu, A. Takada, and M. Jinno, "Bit-Rate-Flexible All- Optical OFDM Transceiver Using Variable Multi-Carrier Source and DQPSK/DPSK Mixed Multiplexing," Proc. OFC/NFOEC 2009, Paper OWM1.
78. W. Wei, J. Hu, D. Qian, P. N. Ji, T. Wang, X. Liu, and C. Qiao, "PONIARD: A Programmable Optical Networking Infrastructure for Advanced Research and Development of Future Internet," IEEE/OSA J. Lightwave Technol., vol. 27, no. 3, pp. 233-242, February 2009.
79. B. Kozicki, H. Takara, Y. Tsukishima, T. Yoshimatsu, T. Kobayashi, K. Yonenaga, and M. Jinno, "Optical Path Aggregation for 1-Tb/s Transmission in Spectrum-Sliced Elastic Optical Path Network," IEEE Photonics Technol. Lett., vol.22, no.17, pp.1315-1317, September 2010.
80. H. Takara, B. Kozicki, Y. Sone, T. Tanaka, A. Watanabe, A. Hirano, K. Yonenaga, and M. Jinno, "Distance-Adaptive Super-Wavelength Routing in Elastic Optical Path Network (SLICE) with Optical OFDM," Proc. ECOC 2010, Paper We.8.D.2.
81. T. He, N. K. Fontaine, R. P. Scott, D. J. Geisler, L. Paraschis, O. Gerstel, J. P. Heritage, and S. J. B. Yoo, "Flexible-Bandwidth and Format-Agile Networking Based on Optical Arbitrary Waveform Generation and Wavelength Selective Switches," 23rd Annual Meeting of the IEEE Photonics Society, 2010, Paper MM6.
82. A. Bocoi, M. Schuster, F. Rambach, D. A. Schupke, C. Bunge, and B. Spinnler, "Cost Comparison of Networks Using Traditional 10 and 40 Gb/s Transponders Versus OFDM Transponders," Proc. OFC/NFOEC 2008, Paper OThB4.
83. D. J. Geisler, N. K. Fontaine, R. P. Scott, T. He, L. Paraschis, O. Gerstel, J. P. Heritage, and S. J. B. Yoo, "Bandwidth Scalable, Coherent Transmitter Based on Parallel Synthesis of Multiple Spectral Slices," Proc. OFC/NFOEC 2011, Paper OTuE3.
84. T. He, R. P. Scott, D. J. Geisler, N. K. Fontaine, O. Gerstel, L. Paraschis, J. P. Heritage and S. J. B. Yoo, "Flexible-Bandwidth, Impairment-Aware Transmitter Based on Parallel Synthesis of Optical Frequency Combs," Proc. OFC/NFOEC 2011, Paper OtuE4.
85. H. Takara, T. Goh, K. Shibahara, K. Yonenaga, S. Kawai, and M. Jinno, "Experimental Demonstration of 400 Gb/s Multi-flow, Multirate, Multireach Optical Transmitter for Efficient Elastic Spectral Routing," Proc. ECOC 2011, Paper Tu.5.A.4.
86. T. A. Strasser and J. L. Wagener, "Wavelength-Selective Switches for ROADM Applications," IEEE J. Sel. Topics Quantum Electron., vol. 16, no. 5, pp. 1150-1157, September/October 2010.
87. S. Frisken, G. Baxter, D. Abakoumov, H. Zhou, I. Clarke, and S. Poole, "Flexible and Grid-less Wavelength Selective Switch using LCOS Technology," Proc. OFC/NFOEC 2011, Paper OTuM3.
88. "Programmable narrow-band filtering using the WaveShaper 1000E and WaveShaper 4000E," Finisar White Paper.
89. G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos and S. Poole, "Highly programmable Wavelength Selective Switch based on Liquid Crystal on Silicon switching elements" Proc. OFC/NFOEC 2006, Paper OTuF2.
90. N. Amaya, I. Muhammad, G. S. Zervas, R. Nejabati, D. Simeodinou, Y. R. Zhou, and A. Lord, "Experimental Demonstration of a Gridless Multi-granular Optical Network Supporting Flexible Spectrum Switching," Proc. OFC/NFOEC 2011, Paper OMW3.
91. R. Ryf, Y. Su, L. Moller, S. Chandrasekhar, D. T. Neilson, and C. R. Giles, "Data rate and channel spacing flexible wavelength blocking filter," Proc. OFC/NFOEC 2004, Paper PDP10.
92. R. Ryf, Y. Su, L.Moller, S. Chandrasekhar, X. Liu, D. T. Neilson, and C. R. Giles, "Wavelength blocking filter with flexible data rates and channel spacing," IEEE/OSA J. Lightwave Technol., vol. 23, no. 1, pp. 54-61, January 2005. (Pubitemid 40181694)
93. G. Shen and Q. Yang, "From Coarse Grid to Mini-Grid to Gridless: How Much can Gridless Help Contentionless?" Proc. OFC/NFOEC 2011, Paper OTuI3.
94. R. Dischler, F. Buchali, and A. Klekamp, "Demonstration of Bit Rate Variable ROADM functionality on an Optical OFDM Superchannel," Proc. OFC/NFOEC 2010, Paper OTuM7.
95. B. Kozicki, H. Takara, T. Yoshimatsu, K. Yonenaga, and M. Jinno, "Filtering Characteristics of Highly-Spectrum Efficient Spectrum-Sliced Elastic Optical Path (SLICE) Network," Proc. OFC/NFOEC 2009, Paper JWA43.
96. Y. Sakurai, M. Kawasugi, Y. Hotta, M. S. Khan, H. Oguri, K. Takeuchi, S. Michihata, and N. Uehara, "LCOS-Based 4x4 Wavelength Cross- Connect Switch For Flexible Channel Management in ROADMs," Proc. OFC/NFOEC 2011, Paper OTuM4.
97. ITU-T G.694.1 "Spectral grids for WDM applications: DWDM frequency grid," 2002.
98. ITU-T C1284, "Proposal of subjects to be discussed regarding flexible grids," January 2011.
99. ITU-T C1288, "Extension of Rec. G.694.1 by a new clause to address flexible frequency grids," January 2011.
100. A. N. Patel, P. N. Ji, J. P. Jue, and T. Wang, "Defragmentation of Transparent Flexible Optical WDM (FWDM) Networks," Proc. OFC/NFOEC 2011, Paper OTuI8.
101. Y. Wang, X. Cao, and Q. Hu, "Routing and Spectrum Allocation in Spectrum-sliced Elastic Optical Path Networks," Proc. International Conference on Communications (ICC), IEEE, June 2011.
102. M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and A. Hirano, "Distance adaptive spectrum resource allocation in spectrum-sliced elastic optical path network," IEEE Commun. Mag., vol. 48, no. 8, pp. 138-145, August 2010.
103. B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, "Distance-Adaptive Spectrum Allocation in Elastic Optical Path Network (SLICE) with Bit per Symbol Adjustment," Proc. OFC/NFOEC 2010, Paper OMU3.
104. T. Takagi, H. Hasegawa, K. Sato, Y. Sone, B. Kozicki, A. Hirano, and M. Jinno, "Dynamic Routing and Frequency Slot Assignment for Elastic Optical Path Networks that Adopt Distance Adaptive Modulation," Proc. OFC/NFOEC 2011, Paper OTuI7.
105. X. Wan, L.Wang, N. Hua, H. Zhang, and X. Zheng, "Dynamic Routing and Spectrum Assignment in Flexible Optical Path Networks," Proc. OFC/NFOEC 2011, Paper JWA55.
106. H. Zhang, J. P. Jue, B. Mukherjee, "A Review of Routing and Wavelength Assignment Approaches for Wavelength-Routed Optical WDM Networks," Optical Networks Magazine, vol. 1, no. 1, pp. 47- 60, January 2000.
107. A. N. Patel, P. N. Ji, J. P. Jue, and T. Wang, "Survivable Transparent Flexible Optical WDM (FWDM) Networks," Proc.,OFC/NFOEC 2011, Paper OTuI2.
108. J. W. Suurballe and R. E. Tarjan, "A quick method for finding shortest pairs of disjoint paths," Networks, vol. 14, no. 2, pp. 325-336, 1984. (Pubitemid 14589465)
109. T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, "Algorithms for Maximizing Spectrum Efficiency in Elastic Optical Path Networks that Adopt Distance Adaptive Modulation," Proc. ECOC 2010, Paper. We.8.D.5.
110. K. Christodoulopoulos, I. Tomkos, and E. A. Varvarigos, "Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks," IEEE/OSA J. Lightwave Technol., vol. 29, no. 9, pp. 1354-1366, May 2011.
111. A. Morea, A. F. Chong, and O. Rival, "Impact of transparent network constraints on capacity gain of elastic channel spacing," Proc. OFC/NFOEC 2011, Paper JWA62.
112. K. Christodoulopoulos, I. Tomkos and E. Varvarigos, "Dynamic Bandwidth Allocation in Flexible OFDM-based Networks," Proc. OFC/NFOEC 2011, Paper OTuI5.
113. S. Acharya, B. Guptu, P. Risbood, and A. Srivastuvu, "Mobipack: optimal hitless SONET defragmentation in near-optimal cost," Proc. INFOCOM 2004, vol.3, pp. 1819-1829.
114. Y. Zhang, X. Zheng, Q. Li, N. Hua, Y. Li, and H. Zhang, "Traffic Grooming in Spectrum-Elastic Optical Path Networks," Proc. OFC/NFOEC 2011, Paper OTuI1.
115. Y. Sone, A. Watanabe, W. Imajuku, Y. Tsukishima, B. Kozicki, H. Takara, and M. Jinno, "Highly Survivable Restoration Scheme Employing Optical Bandwidth Squeezing in Spectrum-Sliced Elastic Optical network SLICE," Proc. OFC/NFOEC 2009, Paper OThO2.
116. Optical Internetworking Forum, "User Network Interface (UNI) 2.0 Signaling Specification," 2008.
117. M. Jinno and Y. Tsukishima, "Virtualized Optical Network (VON) for Agile Cloud Computing Environment," Proc. OFC/NFOEC 2009, Paper OMG1.
118. W. Wei, C Wang, and X. Liu, "Adaptive IP/Optical OFDM Networking Design," Proc. OFC/NFOEC 2010, Paper OWR6.
119. W. Wei, J. Hu, C. Wang, T. Wang, and C. Qiao, "A Programmable Router Interface Supporting Link Virtualization with Adaptive Optical OFDMA Transmission," Proc. OFC/NFOEC 2009, Paper JWA68.
120. S. Aleksic, "Energy-Efficient Global Networks and Their Implications," Proc. 10th International Conference on Telecommunications (ConTEL), pp. 331-338, June 2009.