Abstract

The fastest ever 6Gb/s real-time FPGA-based optical orthogonal frequency division multiplexing (OOFDM) transceivers utilizing channel estimation are experimentally demonstrated, for the first time, with variable power loading being incorporated to effectively compensate for the rapid system frequency response roll-off effect. The implemented transceivers are constructed entirely from off-the-shelf components and incorporate crucial functionalities of on-line performance monitoring and live optimization of key parameters including signal clipping, subcarrier power and operating conditions of directly modulated DFB lasers (DMLs). Real-time end-to-end transmission of a 6Gb/s 16-QAM-encoded OOFDM signal over 300m OM1 multi-mode fiber with a power penalty of 0.5dB is successfully achieved in an intensity-modulation and direct-detection system employing a DML.

© 2009 OSA

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References

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  1. N. E. Jolley, H. Kee, R. Rickard, J. Tang, and K. Cordina, “Generation and propagation of a 1550nm 10Gb/s optical orthogonal frequency division multiplexed signal over 1000m of multimode fibre using a directly modulated DFB,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2005), Paper OFP3.
  2. H. Masuda, E. Yamazaki, A. Sano, T. Yoshimatsu, T. Kobayashi, E. Yoshida, Y. Miyamoto, S. Matsuoka, Y. Takatori, M. Mizoguchi, K. Okada, K. Hagimoto, T. Yamada, and S. Kamei, “13.5-Tb/s (135×111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 6248km using SNR maximized second-order DRA in the extended L-band,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper PDPB5.
  3. Y. Ma, Q. Yang, Y. Tang, S. Chen, and W. Shieh, “1-Tb/s single-channel coherent optical OFDM transmission over 600-km SSMF fiber with subwavelength bandwidth access,” Opt. Express 17(11), 9421–9427 (2009).
    [CrossRef] [PubMed]
  4. T. Duong, N. Genay, P. Chanclou, B. Charbonnier, A. Pizzinat, and R. Brenot, “Experimental demonstration of 10 Gbit/s for upstream transmission by remote modulation of 1 GHz RSOA using Adaptively Modulated Optical OFDM for WDM-PON single fiber architecture,” European Conference on Optical Communication (ECOC), (Brussels, 2008), PD paper Th.3.F.1.
  5. C.-W. Chow, C.-H. Yeh, C.-H. Wang, F.-Y. Shih, C.-L. Pan, and S. Chi, “WDM extended reach passive optical networks using OFDM-QAM,” Opt. Express 16(16), 12096–12101 (2008).
    [CrossRef] [PubMed]
  6. D. Qian, N. Cvijetic, J. Hu, and T. Wang, “108 Gb/s OFDMA-PON with polarization multiplexing and direct-detection,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper PDPD5.
  7. H. Yang, S. C. J. Lee, E. Tangdiongga, F. Breyer, S. Randel, and A. M. J. Koonen, “40-Gb/s transmission over 100m graded-index plastic optical fibre based on discrete multitone modulation,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper PDPD8.
  8. S. Chen, Q. Yang, Y. Ma, and W. Shieh, “Multi-gigabit real-time coherent optical OFDM receiver,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper OTuO4.
  9. S. Chen, Y. Yang, Y. Ma, and W. Shieh, “Real-time multi-gigabit receiver for coherent optical MIMO-OFDM signals,” J. Lightwave Technol. 27(16), 3699–3704 (2009).
    [CrossRef]
  10. R. P. Giddings, X. Q. Jin, H. H. Kee, X. L. Yang, and J. M. Tang, “Real-time implementation of optical OFDM transmitters and receivers for practical end-to-end optical transmission systems,” Electron. Lett. 45(15), 800–802 (2009).
    [CrossRef]
  11. R. P. Giddings, X. Q. Jin, H. H. Kee, X. L. Yang, and J. M. Tang, “Experimental implementation of real-time optical OFDM modems for optical access networks,” European Workshop on Photonic Solutions for Wireless, Access, and In-house Networks, (May 2009), Duisburg, Germany.
  12. R. P. Giddings, X. Q. Jin, and J. M. Tang, “Experimental demonstration of real-time 3Gb/s optical OFDM transceivers,” Opt. Express 17(19), 16654–16665 (2009).
    [CrossRef] [PubMed]
  13. X. Q. Jin, R. P. Giddings, and J. M. Tang, “Real-time transmission of 3 Gb/s 16-QAM encoded optical OFDM signals over 75 km SMFs with negative power penalties,” Opt. Express 17(17), 14574–14585 (2009).
    [CrossRef] [PubMed]
  14. X. Q. Jin, R. P. Giddings, and J. M. Tang, “Real-time 3Gb/s 16QAM-encoded optical OFDM transmission over 75km MetroCor SMFs with negative power penalties,” The 14th OptoElectronics and Communications Conference (OECC), (July 2009), Paper ThPD8.
  15. E. J. Tyler, P. Kourtessis, M. Webster, E. Rochart, T. Quinlan, S. E. M. Dudley, S. D. Walker, R. V. Penty, and I. H. White, “Toward terabit-per-second capacities over multimode fiber links using SCM/WDM techniques,” J. Lightwave Technol. 21(12), 3237–3243 (2003).
    [CrossRef]
  16. J. M. Tang and K. A. Shore, “Maximizing the transmission performance of adaptively modulated optical OFDM signals in multimode-fiber links by optimizing analog-to-digital converters,” J. Lightwave Technol. 25(3), 787–798 (2007).
    [CrossRef]
  17. I. Gasulla and J. Capmany, “Modal noise impact in radio over fiber multimode fiber links,” Opt. Express 16(1), 121–126 (2008).
    [CrossRef] [PubMed]
  18. X. Q. Jin, J. M. Tang, K. Qiu, and P. S. Spencer, “Statistical investigations of the transmission performance of adaptively modulated optical OFDM signals in multimode fibre links,” J. Lightwave Technol. 26(18), 3216–3224 (2008).
    [CrossRef]
  19. X. Zheng, J. L. Wei, and J. M. Tang, “Transmission performance of adaptively modulated optical OFDM modems using subcarrier modulation over SMF IMDD links for access and metropolitan area networks,” Opt. Express 16(25), 20427–20440 (2008).
    [CrossRef] [PubMed]

2009 (5)

2008 (4)

2007 (1)

2003 (1)

Capmany, J.

Chen, S.

Chi, S.

Chow, C.-W.

Dudley, S. E. M.

Gasulla, I.

Giddings, R. P.

Jin, X. Q.

Kee, H. H.

R. P. Giddings, X. Q. Jin, H. H. Kee, X. L. Yang, and J. M. Tang, “Real-time implementation of optical OFDM transmitters and receivers for practical end-to-end optical transmission systems,” Electron. Lett. 45(15), 800–802 (2009).
[CrossRef]

Kourtessis, P.

Ma, Y.

Pan, C.-L.

Penty, R. V.

Qiu, K.

Quinlan, T.

Rochart, E.

Shieh, W.

Shih, F.-Y.

Shore, K. A.

Spencer, P. S.

Tang, J. M.

Tang, Y.

Tyler, E. J.

Walker, S. D.

Wang, C.-H.

Webster, M.

Wei, J. L.

White, I. H.

Yang, Q.

Yang, X. L.

R. P. Giddings, X. Q. Jin, H. H. Kee, X. L. Yang, and J. M. Tang, “Real-time implementation of optical OFDM transmitters and receivers for practical end-to-end optical transmission systems,” Electron. Lett. 45(15), 800–802 (2009).
[CrossRef]

Yang, Y.

Yeh, C.-H.

Zheng, X.

Electron. Lett. (1)

R. P. Giddings, X. Q. Jin, H. H. Kee, X. L. Yang, and J. M. Tang, “Real-time implementation of optical OFDM transmitters and receivers for practical end-to-end optical transmission systems,” Electron. Lett. 45(15), 800–802 (2009).
[CrossRef]

J. Lightwave Technol. (4)

Opt. Express (6)

Other (8)

D. Qian, N. Cvijetic, J. Hu, and T. Wang, “108 Gb/s OFDMA-PON with polarization multiplexing and direct-detection,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper PDPD5.

H. Yang, S. C. J. Lee, E. Tangdiongga, F. Breyer, S. Randel, and A. M. J. Koonen, “40-Gb/s transmission over 100m graded-index plastic optical fibre based on discrete multitone modulation,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper PDPD8.

S. Chen, Q. Yang, Y. Ma, and W. Shieh, “Multi-gigabit real-time coherent optical OFDM receiver,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper OTuO4.

T. Duong, N. Genay, P. Chanclou, B. Charbonnier, A. Pizzinat, and R. Brenot, “Experimental demonstration of 10 Gbit/s for upstream transmission by remote modulation of 1 GHz RSOA using Adaptively Modulated Optical OFDM for WDM-PON single fiber architecture,” European Conference on Optical Communication (ECOC), (Brussels, 2008), PD paper Th.3.F.1.

N. E. Jolley, H. Kee, R. Rickard, J. Tang, and K. Cordina, “Generation and propagation of a 1550nm 10Gb/s optical orthogonal frequency division multiplexed signal over 1000m of multimode fibre using a directly modulated DFB,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2005), Paper OFP3.

H. Masuda, E. Yamazaki, A. Sano, T. Yoshimatsu, T. Kobayashi, E. Yoshida, Y. Miyamoto, S. Matsuoka, Y. Takatori, M. Mizoguchi, K. Okada, K. Hagimoto, T. Yamada, and S. Kamei, “13.5-Tb/s (135×111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 6248km using SNR maximized second-order DRA in the extended L-band,” Optical Fibre Communication/National Fibre Optic Engineers Conference (OFC/NFOEC), (OSA, 2009), Paper PDPB5.

X. Q. Jin, R. P. Giddings, and J. M. Tang, “Real-time 3Gb/s 16QAM-encoded optical OFDM transmission over 75km MetroCor SMFs with negative power penalties,” The 14th OptoElectronics and Communications Conference (OECC), (July 2009), Paper ThPD8.

R. P. Giddings, X. Q. Jin, H. H. Kee, X. L. Yang, and J. M. Tang, “Experimental implementation of real-time optical OFDM modems for optical access networks,” European Workshop on Photonic Solutions for Wireless, Access, and In-house Networks, (May 2009), Duisburg, Germany.

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Figures (9)

Fig. 1
Fig. 1

Real-time OOFDM transceiver architectures with channel estimation, variable power loading and improved functionalities of on-line performance monitoring and live parameter optimisation.

Fig. 2
Fig. 2

Real-time experimental system setup.

Fig. 3
Fig. 3

Measured system frequency responses for analogue back-to-back and 300m MMF transmission link configuration.

Fig. 4
Fig. 4

Received subcarrier amplitudes for equal power loading and variable power loading. Variable power-loaded subcarrier amplitudes in the transmitter and their corresponding relative error bits after transmitting through a 300m MMF are also shown.

Fig. 5
Fig. 5

Constellations of different subcarriers of real-time 6Gb/s 16-QAM-encoded OOFDM signals with equal power loading after transmitting through a 300m MMF. The measured total channel BER is approximately 1.0×10−2.

Fig. 6
Fig. 6

Constellations of different subcarriers of real-time 6Gb/s 16-QAM-encoded OOFDM signals with the optimised three-level variable power loading scheme after transmitting through a 300m MMF. The measured total channel BER is 3.4×10−4. Spurious constellation points are circled in red.

Fig. 7
Fig. 7

BER performance of real-time 6Gb/s 16-QAM-encoded OOFDM signal transmission over a 300m MMF and a back-to-back link configuration.

Fig. 8
Fig. 8

Optical back-to-back constellations of different 16-QAM-encoded subcarriers before equalisation at a signal bit rate of 6Gb/s and total channel BER of 1×10−3.

Fig. 9
Fig. 9

300m MMF transmission constellations of different 16-QAM-encoded subcarriers before equalisation at a signal bit rate of 6Gb/s and total channel BER of 1x10−3.

Equations (3)

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Hk=1Mi=0M1R(k+iNs),kp(k+iNs),k
Xm,k=(Hk)1χm,k
BERT=1NsK=1NsBERK

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