Abstract

We propose and experimentally demonstrate a novel sub-band multiplexed data architecture for chromatic dispersion (CD) mitigation. We have demonstrated 32 GBaud multi-sub-band (MSB) dual-polarization (DP) 16QAM transmission over 2400 km. Using this approach, the transmitted signal bandwidth is divided into multiple narrow-bandwidth sub-bands, each operating at a lower baud rate. Within each sub-band bandwidth, the CD frequency response can be approximated as a linear-phase band-pass filter, which can be considered as an analog delay that does not require compensation. Therefore, the resulting receiver digital signal processing (DSP) is simplified due to the removal of the CD compensation equalizer. In addition, this leads to efficient parallelization of DSP tasks by deploying multiple independent sub-band processors running at a lower clock rate. The proposed system reduces receiver computational complexity and offers 1 dB higher Kerr-nonlinearity tolerance and 2% extended transmission reach in comparison to the conventional single carrier systems.

© 2015 Optical Society of America

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References

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  1. M. Kuschnerov, T. Bex and P. Kainzmaier, “Energy efficient digital signal processing,” in Optical Fiber Communications Conference and Exhibition (Optical Society of America, 2014), paper Th3E.7.
  2. B. S. G. Pillai, B. Sedighi, K. Guan, N. P. Anthapadmanabhan, W. Shieh, K. J. Hinton, and R. S. Tucker, “End-to-end energy modeling and analysis of long-haul coherent transmission systems,” J. Lightwave Technol. 32(18), 3093–3111 (2014).
    [Crossref]
  3. W. Shieh, H. Bao, and Y. Tang, “Coherent optical OFDM: theory and design,” Opt. Express 16(2), 841–859 (2008).
    [Crossref] [PubMed]
  4. A. Tolmachev and M. Nazarathy, “Filter-bank based efficient transmission of reduced-guard-interval OFDM,” Opt. Express 19(26), B370–B384 (2011).
    [Crossref] [PubMed]
  5. M. Nazarathy and A. Tolmachev, “Subbanded DSP architectures based on underdecimated filter banks for coherent OFDM receivers: Overview and recent advances,” IEEE Signal Process. Mag. 31(2), 70–81 (2014).
    [Crossref]
  6. M. Malekiha, I. Tselniker, M. Nazarathy, A. Tolmachev, and D. V. Plant, “Experimental demonstration of low-complexity fiber chromatic dispersion mitigation for reduced guard-interval OFDM coherent optical communication systems based on digital spectrum sub-band multiplexing,” Opt. Express 23(20), 25608–25619 (2015).
    [Crossref] [PubMed]
  7. K. P. Ho, “Subband equaliser for chromatic dispersion of optical fibre,” Electron. Lett. 45(24), 1224–1226 (2009).
    [Crossref]
  8. C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
    [Crossref]
  9. X. Liu, S. Chandrasekhar, B. Zhu, P. Winzer, A. Gnauck, and D. Peckham, “448-Gb/s Reduced-Guard-Interval CO-OFDM Transmission Over 2000 km of Ultra-Large-Area Fiber and Five 80-GHz-Grid ROADMs,” J. Lightwave Technol. 29(4), 483–490 (2011).
    [Crossref]
  10. X. Liu, P. Winzer, C. Sethumadhavan, S. Randel, and S. Corteselli, “Multiband DFT-Spread-OFDM Equalizer with Overlap-and-Add Dispersion Compensation for Low-Overhead and Low-Complexity Channel Equalization,” in Optical Fiber Communication Conference, (Optical Society of America, 2013), paper OW3B.2.
    [Crossref]
  11. J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.
  12. M. Nazarathy, A. Tolmachev, and S. Ben-Ezra, “Sub-banding DSP for flexible optical transceivers,” in 14th International Conference on Transparent Optical Networks (2012), paper 6253734.
  13. C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).
  14. F. J. Harris, C. Dick, and M. Rice, “Digital receivers and transmitters using polyphase filter banks for wireless communications,” IEEE Trans. Microw. Theory Tech. 51(4), 1395–1412 (2003).
    [Crossref]
  15. J. G. Proakis, Digital Communications (McGraw Hill, 2001).
  16. S. J. Savory, “Digital coherent optical receivers: algorithms and subsystems,” IEEE J. Sel. Top. Quantum Electron. 16(5), 1164–1179 (2010).
    [Crossref]
  17. G. P. Agrawal, Fiber-Optic Communication Systems (John Wiley & Sons 2012).
  18. M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22(15), 18770–18777 (2014).
    [Crossref] [PubMed]

2015 (1)

2014 (3)

2012 (2)

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

2011 (2)

2010 (1)

S. J. Savory, “Digital coherent optical receivers: algorithms and subsystems,” IEEE J. Sel. Top. Quantum Electron. 16(5), 1164–1179 (2010).
[Crossref]

2009 (1)

K. P. Ho, “Subband equaliser for chromatic dispersion of optical fibre,” Electron. Lett. 45(24), 1224–1226 (2009).
[Crossref]

2008 (1)

2003 (1)

F. J. Harris, C. Dick, and M. Rice, “Digital receivers and transmitters using polyphase filter banks for wireless communications,” IEEE Trans. Microw. Theory Tech. 51(4), 1395–1412 (2003).
[Crossref]

Anthapadmanabhan, N. P.

Bao, H.

Ben-Ezra, S.

M. Nazarathy, A. Tolmachev, and S. Ben-Ezra, “Sub-banding DSP for flexible optical transceivers,” in 14th International Conference on Transparent Optical Networks (2012), paper 6253734.

Chagnon, M.

Chandrasekhar, S.

Chang, G. K.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Detwiler, T.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Dick, C.

F. J. Harris, C. Dick, and M. Rice, “Digital receivers and transmitters using polyphase filter banks for wireless communications,” IEEE Trans. Microw. Theory Tech. 51(4), 1395–1412 (2003).
[Crossref]

Gao, Y.

Gnauck, A.

Guan, K.

Harris, F. J.

F. J. Harris, C. Dick, and M. Rice, “Digital receivers and transmitters using polyphase filter banks for wireless communications,” IEEE Trans. Microw. Theory Tech. 51(4), 1395–1412 (2003).
[Crossref]

He, Z.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Hinton, K. J.

Ho, K. P.

K. P. Ho, “Subband equaliser for chromatic dispersion of optical fibre,” Electron. Lett. 45(24), 1224–1226 (2009).
[Crossref]

Hsueh, Y. T.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Jiang, T.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Khawar, H.

J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.

Li, C.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Liu, C.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Liu, X.

Luo, M.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Malekiha, M.

Mezghani, A.

J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.

Morsy-Osman, M.

Munir, J.

J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.

Nazarathy, M.

M. Malekiha, I. Tselniker, M. Nazarathy, A. Tolmachev, and D. V. Plant, “Experimental demonstration of low-complexity fiber chromatic dispersion mitigation for reduced guard-interval OFDM coherent optical communication systems based on digital spectrum sub-band multiplexing,” Opt. Express 23(20), 25608–25619 (2015).
[Crossref] [PubMed]

M. Nazarathy and A. Tolmachev, “Subbanded DSP architectures based on underdecimated filter banks for coherent OFDM receivers: Overview and recent advances,” IEEE Signal Process. Mag. 31(2), 70–81 (2014).
[Crossref]

A. Tolmachev and M. Nazarathy, “Filter-bank based efficient transmission of reduced-guard-interval OFDM,” Opt. Express 19(26), B370–B384 (2011).
[Crossref] [PubMed]

M. Nazarathy, A. Tolmachev, and S. Ben-Ezra, “Sub-banding DSP for flexible optical transceivers,” in 14th International Conference on Transparent Optical Networks (2012), paper 6253734.

Nossek, J. A.

J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.

Pan, J.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Peckham, D.

Pillai, B. S. G.

Plant, D. V.

Qiu, M.

Ralph, S. E.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Rice, M.

F. J. Harris, C. Dick, and M. Rice, “Digital receivers and transmitters using polyphase filter banks for wireless communications,” IEEE Trans. Microw. Theory Tech. 51(4), 1395–1412 (2003).
[Crossref]

Savory, S. J.

S. J. Savory, “Digital coherent optical receivers: algorithms and subsystems,” IEEE J. Sel. Top. Quantum Electron. 16(5), 1164–1179 (2010).
[Crossref]

Sedighi, B.

Shieh, W.

Slim, I.

J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.

Stark, A.

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Tang, Y.

Tolmachev, A.

M. Malekiha, I. Tselniker, M. Nazarathy, A. Tolmachev, and D. V. Plant, “Experimental demonstration of low-complexity fiber chromatic dispersion mitigation for reduced guard-interval OFDM coherent optical communication systems based on digital spectrum sub-band multiplexing,” Opt. Express 23(20), 25608–25619 (2015).
[Crossref] [PubMed]

M. Nazarathy and A. Tolmachev, “Subbanded DSP architectures based on underdecimated filter banks for coherent OFDM receivers: Overview and recent advances,” IEEE Signal Process. Mag. 31(2), 70–81 (2014).
[Crossref]

A. Tolmachev and M. Nazarathy, “Filter-bank based efficient transmission of reduced-guard-interval OFDM,” Opt. Express 19(26), B370–B384 (2011).
[Crossref] [PubMed]

M. Nazarathy, A. Tolmachev, and S. Ben-Ezra, “Sub-banding DSP for flexible optical transceivers,” in 14th International Conference on Transparent Optical Networks (2012), paper 6253734.

Tselniker, I.

Tucker, R. S.

Winzer, P.

Xiao, X.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Xu, X.

Xue, D.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Yang, Q.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Yi, X.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Yu, S.

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

Zhu, B.

Zhuge, Q.

Electron. Lett. (1)

K. P. Ho, “Subband equaliser for chromatic dispersion of optical fibre,” Electron. Lett. 45(24), 1224–1226 (2009).
[Crossref]

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

S. J. Savory, “Digital coherent optical receivers: algorithms and subsystems,” IEEE J. Sel. Top. Quantum Electron. 16(5), 1164–1179 (2010).
[Crossref]

IEEE Photonics Technol. Lett. (1)

C. Li, Q. Yang, T. Jiang, Z. He, M. Luo, C. Li, X. Xiao, D. Xue, X. Yi, and S. Yu, “Investigation of Coherent Optical Multiband DFT-S OFDM in Long Haul Transmission,” IEEE Photonics Technol. Lett. 24(19), 1704–1707 (2012).
[Crossref]

IEEE Signal Process. Mag. (1)

M. Nazarathy and A. Tolmachev, “Subbanded DSP architectures based on underdecimated filter banks for coherent OFDM receivers: Overview and recent advances,” IEEE Signal Process. Mag. 31(2), 70–81 (2014).
[Crossref]

IEEE Trans. Microw. Theory Tech. (1)

F. J. Harris, C. Dick, and M. Rice, “Digital receivers and transmitters using polyphase filter banks for wireless communications,” IEEE Trans. Microw. Theory Tech. 51(4), 1395–1412 (2003).
[Crossref]

J. Lightwave Technol. (2)

Opt. Express (4)

Proc. SPIE (1)

C. Liu, J. Pan, T. Detwiler, A. Stark, Y. T. Hsueh, G. K. Chang, and S. E. Ralph, “Super receiver design for superchannel coherent optical systems,” Proc. SPIE 8284, 828405 (2012).

Other (6)

G. P. Agrawal, Fiber-Optic Communication Systems (John Wiley & Sons 2012).

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

M. Kuschnerov, T. Bex and P. Kainzmaier, “Energy efficient digital signal processing,” in Optical Fiber Communications Conference and Exhibition (Optical Society of America, 2014), paper Th3E.7.

X. Liu, P. Winzer, C. Sethumadhavan, S. Randel, and S. Corteselli, “Multiband DFT-Spread-OFDM Equalizer with Overlap-and-Add Dispersion Compensation for Low-Overhead and Low-Complexity Channel Equalization,” in Optical Fiber Communication Conference, (Optical Society of America, 2013), paper OW3B.2.
[Crossref]

J. Munir, A. Mezghani, H. Khawar, I. Slim, and J. A. Nossek, “Chromatic dispersion compensation using filter bank based complex-valued all-pass filter,” in 10th International ITG Conference on Systems, Communications and Coding (2015), paper 1403.1732.

M. Nazarathy, A. Tolmachev, and S. Ben-Ezra, “Sub-banding DSP for flexible optical transceivers,” in 14th International Conference on Transparent Optical Networks (2012), paper 6253734.

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Figures (11)

Fig. 1
Fig. 1 A generic frequency-division-multiplexed communication link based on a synthesis filter-bank in the transmitter and an analysis filter-bank in the receiver (notice that the usual combination of filter-banks in DSP textbooks, for data compression purposes, has the opposite order of the analysis and synthesis filter-banks).
Fig. 2
Fig. 2 Equivalent filter-bank representation of the frequency-division-multiplexed communication link based on discrete-time up/down converters and baseband prototype filters.
Fig. 3
Fig. 3 Equivalent filter-bank representation of the frequency-division-multiplexed communication link based on M-points (I)DFT and M polyphase filters (corresponding to the uniform maximally decimated FBs). Notice that the receive filters were selected here to be matched filters relative to the transmit filters.
Fig. 4
Fig. 4 a Transmitter-side DSP based on an M-point IDFT and M polyphase filters (corresponding to the M polyphases of the prototype pulse-shaping filter), 4.b optical spectra of transmitted multi-sub-band signal.
Fig. 5
Fig. 5 a Receiver-side DSP based on twice under-decimated M-points DFT and polyphase filters (The M receive polyphases were selected here to be matched filters relative to the transmit filters). 5.b Conventional singe carrier receiver DSP.
Fig. 6
Fig. 6 Experimental setup. EDFA: Erbium-doped fiber amplifiers, BPF: band-pass filter, T-T BPF: Tunable bandwidth and tunable center frequency band-pass filter, LO: local oscillator, PC: polarization controller, SW: switch.
Fig. 7
Fig. 7 Simulated Q-factor penalty versus number of sub-bands at different transmission distance for 32 GBaud MSB-DP-16QAM.
Fig. 8
Fig. 8 Simulated number of required sub-bands versus different transmission distance for 32 GBaud MSB-DP-16QAM to fully mitigate the effects of CD.
Fig. 9
Fig. 9 Experimental back-to-back performance of 32 GBuad conventional SC-DP-16QAM and different MSB-DP-16QAMs.
Fig. 10
Fig. 10 Experimental BER versus launch power for 32 GBuad conventional SC-DP-16QAM and 8-MSB-DP-16QAM after 2240 km.
Fig. 11
Fig. 11 Experimental maximum transmission distance versus launch power for 32 GBaud conventional SC-DP-16QAM and MSB-DP-16QAM at soft FEC BER threshold of 2× 10 2 .

Equations (2)

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Δ τ CD = 2π| β 2 |LBW T s .
Δ τ CD =2π| β 2 |ηLB W 2 .

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