Abstract

We demonstrate that the optical Fourier transform and cyclic prefix in an all-optical OFDM transmitter can be simultaneously implemented using a liquid crystal on silicon wavelength selective switch (WSS). The design uses phase-modulated optical pulses at the inputs of the WSS; this has the advantage that the optical modulators are only sampled by the optical pulses once per data-symbol, so that the transition times between the data symbols are irrelevant to the performance of the system, allowing slow optical modulators to be used. Furthermore, each input of the WSS can be assigned to any combination of output subcarrier frequencies, including frequencies unrelated to the modal frequencies of the comb source. This is especially useful for testing in-service ultra-high bandwidth systems by applying additional wavelengths. As an example, we generate a 10.08 Tb/s signal and transmit along 857.4 km of fiber using 252 10-Gbaud subcarriers with a ${10\%}$ cyclic prefix. We use an optically-banded digital subcarrier demultiplexer to simultaneously detect three subcarriers using a single coherent receiver.

© 2013 IEEE

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  1. W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-59 (2008).
  2. A. Lowery, J. Armstrong, "Orthogonal-frequency-division multiplexing for dispersion compensation of long-haul optical systems ," Opt. Exp. 14, 2079-84 (2006).
  3. G. Bosco, V. Curri, A. Carena, "On the performance of Nyquist-WDM terabit superchannels based on PM-BPSK, PM-QPSK, PM-8QAM or PM-16QAM subcarriers," J. Lightw. Technol. 29, 53 -61 (2011).
  4. T. Hirooka, P. Ruan, P. Guan, M. Nakazawa, "Highly dispersion-tolerant 160 Gbaud optical Nyquist pulse TDM transmission over 525 km," Opt. Exp. 20, 15001-1-15001-7 ( 2012).
  5. A. Sano, E. Yamada, "No-guard-interval coherent optical OFDM for 100-Gb/s long-haul WDM transmission," J. Lightw. Technol. 27, 3705 -3713 (2009).
  6. S. Kilmurray, T. Fehenberger, P. Bayvel, R. Killey, "Comparison of the nonlinear transmission performance of quasi-Nyquist WDM and reduced guard interval OFDM," Opt. Exp. 20 , 1027-1030 (2012 ).
  7. 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. Huebner, J. Becker, C. Koos, W. Freude, J. Leuthold, "26 Tbit/s line-rate super-channel transmission utilizing all-optical fast Fourier transform processing," Nat. Photon. 5, 364-371 (2011).
  8. L. B. Du, J. Schöeder, M. M. Morshed, B. Eggleton, and A. J. Lowery, “Optical inverse fourier transform generated 11.2-Tbit/s no-guard-interval all-optical OFDM transmission,” presented at the Optical Fiber Communication Conf., Anaheim, CA, USA, Mar. 2013, Paper OW3B.5..
  9. J. Yu, Z. Dong, H.-C. Chien, X. Xiao, and Z. Jia, “30-Tb/s (3x12.84-Tb/s) Signal Transmission over 320km Using PDM 64-QAM Modulation,” in Proc. Opt. Fiber Commun. Conf., 2012, vol. 1, p. OM2A.4..
  10. X. Liu, S. Chandrasekhar, B. Zhu, and D. W. Peckham, “Efficient Digital Coherent Detection of a 1.2-Tb/s 24-Carrier No-Guard-Interval CO-OFDM Signal by Simultaneously Detecting Multiple Carriers Per Sampling,” presented at the Optical Fiber Communication Conf., San Diego, CA, USA, 2010, Paper. OWO2..
  11. A. Sano, H. Masuda, E. Yoshida, T. Kobayashi, E. Yamada, Y. Miyamoto, F. Inuzuka, Y. Hibino, Y. Taktori, K. Hagimoto, T. Yamada, and Y. Sakamaki, “30x100-Gb/s all-optical OFDM transmission over 1300 km SMF with 10 ROADM nodes,” presented at the Proc. European Conf. Optical Communication, Berlin, Germany, 2007, no. 1, Paper PDS1.7..
  12. A. J. Lowery, L. Du, "All-optical OFDM transmitter design using AWGRs and low-bandwidth modulators," Opt. Exp. 19, 15696-15704 (2011).
  13. H. Chen, X. Gu, F. Yin, M. Chen, S. Xie, " 5x200Gbit/s all-optical OFDM transmission using a single optical source and optical Fourier transform real-time detection," Opt. Exp. 19, 21 199-21 204 (2011).
  14. Z. Wang, K. S. Kravtsov, Y.-K. Huang, P. R. Prucnal, "Optical FFT/IFFT circuit realization using arrayed waveguide gratings and the applications in all-optical OFDM system," Opt. Exp. 19, 4501-4512 (2011).
  15. D. J. Geisler, N. K. Fontaine, T. He, R. P. Scott, L. Paraschis, J. P. Heritage, S. J. B. Yoo, "Modulation-format agile, reconfigurable Tb/s transmitter based on optical arbitrary waveform generation," Opt. Exp. 17 , 15 911-15 925 (2009).
  16. S. Shimizu, G. Cincotti, N. Wada, "Demonstration and performance investigation of all-optical OFDM systems based on arrayed waveguide gratings," Opt. Exp. 20, B525-34 (2012).
  17. K. Lee, C. T. D. Thai, J.-K. K. Rhee, "All optical discrete Fourier transform processor for 100 Gbps OFDM transmission," Opt. Exp. 16, 4023-4028 (2008).
  18. L. B. Du, J. Schröder, B. J. Eggleton, A. J. Lowery, "Reconfigurable optical OFDM transmitter using an inverse optical Fourier transform," Proc. Opto-Electron. Commun. Conf. ( 2012) pp. PDP1-PDP1.
  19. L. B. Du, J. B. Schröder, and A. J. Lowery, “Blind Subcarrier Equalization without Pre-filtering for Optical OFDM systems,” presented at the Proc. Optical Fiber Communication Conf., Los Angeles, CA, USA, 2012, Paper OM2H.6..
  20. X. Yi, N. Fontaine, "Tb/s Coherent Optical OFDM Systems Enabled by Optical Frequency Combs," J. Lightw. Technol. 28, 2054-2061 (2010).
  21. D. Hillerkuss, M. Winter, M. Teschke, A. Marculescu, J. Li, G. Sigurdsson, K. Worms, S. Ben Ezra, N. Narkiss, W. Freude, J. Leuthold, "Simple all-optical FFT scheme enabling Tbit/s real-time signal processing," Opt. Exp. 18, 9324-40 (2010).
  22. I. Kang, S. Chadrasekhar, M. Rasras, X. Liu, M. Cappuzzo, L. T. Gomez, Y. F. Chen, L. Buhl, S. Cabot, J. Jaques, "Long-haul transmission of 35-Gb/s all-optical OFDM signal without using tunable dispersion compensation and time gating," Opt. Exp. 19, 811-816 (2011).
  23. K. Takiguchi, T. Kitoh, A. Mori, "Optical orthogonal frequency division multiplexing demultiplexer using slab star coupler-based optical discrete Fourier transform circuit ," Opt. Lett. 36, 1140-1142 (2011).
  24. J. Schröder, M. A. F. Roelens, L. B. Du, A. J. Lowery, S. Frisken, B. J. Eggleton, "An optical FPGA: Reconfigurable simultaneous multi-output spectral pulse-shaping for linear optical processing," Opt. Exp. 21, 690-697 (2013).
  25. A. J. Lowery, J. Schröder, and L. B. Du, “Flexible all-optical frequency allocation of OFDM subcarriers,” Opt. Exp., 2013, in review..
  26. A. J. Lowery, "Inserting a cyclic prefix using arrayed-waveguide grating routers in all-optical OFDM transmitters," Opt. Exp. 20 , 9742-9754 (2012 ).
  27. J. B. Schröder, L. B. Du, M. M. Morshed, B. Eggleton, and A. J. Lowery, “Colorless Flexible Signal Generator for Elastic Networks and Rapid Prototyping,” presented at the Optical Fiber Communication Conf.,   Anaheim, CA, USA, Mar. 2013, Paper JW2A.44..
  28. J. Schröder, L. B. Du, M. A. Roelens, B. J. Eggleton, A. J. Lowery, "Reconfigurable all-optical Discrete Fourier Transform in a Wavelength Selective Switch for Optical OFDM demultiplexing," Proc. Opt. Fiber Commun. Conf. (2012) pp. OTh1G.6.
  29. I. Kang, X. Liu, S. Chandrasekhar, M. Rasras, H. Jung, M. Cappuzzo, Y. F. Chen, L. Buhl, S. Cabot, J. Jaques, "OFDM transmission using photonic-integrated all-optical discrete Fourier transform ," Opt. Exp. 20, 896-904 (2012).
  30. F. Gunning, T. Healy, A. Ellis, "Dispersion tolerance of coherent WDM," IEEE Photon. Technol. Lett. 18, 1338-1340 (2006 ).
  31. L. B. Du, A. J. Lowery, "No-guard-interval coherent optical OFDM with self-tuning receiver," Opt. Exp. 19, 2181-2186 (2011).
  32. T. Kobayashi, A. Sano, "Over 100 Gb/s electro-optically multiplexed OFDM for high-capacity optical transport network," J. Lightw. Technol. 27, 3714-3720 (2009).
  33. L. B. Du, A. J. Lowery, "Optimizing the subcarrier granularity of coherent optical communications systems," Opt. Exp. 19, (2011 ).
  34. Y. Tang, W. Shieh, B. S. Krongold, "DFT-Spread OFDM for Fiber Nonlinearity Mitigation," IEEE Photon. Technol. Lett. 22, 1250-1252 (2010).
  35. B. Zhu, X. Liu, "Ultra-long-haul transmission of 1.2-Tb/s multicarrier no-guard-interval CO-OFDM superchannel using ultra-large-area fiber," IEEE Photon. Technol. Lett. 22, 826-828 (2010).
  36. Z. Dong, X. Xia, Y. Xia, S. Shi, C. Ge, W. Zhou, N. Chi, and Y. Shao, “Generation, transmission and coherent detection of 11.2 Tb/s (112x100Gb/s) single source optical OFDM superchannel,” presented at the Proc. Optical Fiber Communication Conf. Los Angeles, CA, USA, 2011, Paper PDPA6. .
  37. A. J. Lowery, "Design of arrayed-waveguide grating routers for use as optical OFDM demultiplexers," Opt. Exp. 18, 14129-14143 (2010 ).
  38. S. Chandrasekhar, X. Liu, "Experimental investigation on the performance of closely spaced multi-carrier PDM-QPSK with digital coherent detection," Opt. Exp. 17, 21350-21361 (2009).
  39. L. B. Du, A. J. Lowery, "The validity of “Odd and Even” channels for testing all-optical OFDM and Nyquist WDM long-haul fiber systems," Opt. Exp. 20, B445-B451 (2012 ).
  40. S. K. Ibrahim, J. Zhao, F. C. G. Gunning, P. Frascella, F. H. Peters, a. D. Ellis, "Towards a practical implementation of coherent WDM: Analytical, numerical, and experimental studies," IEEE Photon. J. 2, 833-847 (2010).
  41. M. A. F. Roelens, S. Frisken, J. A. Bolger, D. Abakoumov, G. Baxter, S. Poole, B. J. Eggleton, "Dispersion trimming in a reconfigurable wavelength selective switch ," J. Lightw. Technol. 26, 73-78 (2008).

2013 (1)

J. Schröder, M. A. F. Roelens, L. B. Du, A. J. Lowery, S. Frisken, B. J. Eggleton, "An optical FPGA: Reconfigurable simultaneous multi-output spectral pulse-shaping for linear optical processing," Opt. Exp. 21, 690-697 (2013).

2012 (2)

I. Kang, X. Liu, S. Chandrasekhar, M. Rasras, H. Jung, M. Cappuzzo, Y. F. Chen, L. Buhl, S. Cabot, J. Jaques, "OFDM transmission using photonic-integrated all-optical discrete Fourier transform ," Opt. Exp. 20, 896-904 (2012).

S. Shimizu, G. Cincotti, N. Wada, "Demonstration and performance investigation of all-optical OFDM systems based on arrayed waveguide gratings," Opt. Exp. 20, B525-34 (2012).

2011 (8)

L. B. Du, A. J. Lowery, "No-guard-interval coherent optical OFDM with self-tuning receiver," Opt. Exp. 19, 2181-2186 (2011).

G. Bosco, V. Curri, A. Carena, "On the performance of Nyquist-WDM terabit superchannels based on PM-BPSK, PM-QPSK, PM-8QAM or PM-16QAM subcarriers," J. Lightw. Technol. 29, 53 -61 (2011).

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. Huebner, J. Becker, C. Koos, W. Freude, J. Leuthold, "26 Tbit/s line-rate super-channel transmission utilizing all-optical fast Fourier transform processing," Nat. Photon. 5, 364-371 (2011).

A. J. Lowery, L. Du, "All-optical OFDM transmitter design using AWGRs and low-bandwidth modulators," Opt. Exp. 19, 15696-15704 (2011).

H. Chen, X. Gu, F. Yin, M. Chen, S. Xie, " 5x200Gbit/s all-optical OFDM transmission using a single optical source and optical Fourier transform real-time detection," Opt. Exp. 19, 21 199-21 204 (2011).

Z. Wang, K. S. Kravtsov, Y.-K. Huang, P. R. Prucnal, "Optical FFT/IFFT circuit realization using arrayed waveguide gratings and the applications in all-optical OFDM system," Opt. Exp. 19, 4501-4512 (2011).

I. Kang, S. Chadrasekhar, M. Rasras, X. Liu, M. Cappuzzo, L. T. Gomez, Y. F. Chen, L. Buhl, S. Cabot, J. Jaques, "Long-haul transmission of 35-Gb/s all-optical OFDM signal without using tunable dispersion compensation and time gating," Opt. Exp. 19, 811-816 (2011).

K. Takiguchi, T. Kitoh, A. Mori, "Optical orthogonal frequency division multiplexing demultiplexer using slab star coupler-based optical discrete Fourier transform circuit ," Opt. Lett. 36, 1140-1142 (2011).

2010 (5)

Y. Tang, W. Shieh, B. S. Krongold, "DFT-Spread OFDM for Fiber Nonlinearity Mitigation," IEEE Photon. Technol. Lett. 22, 1250-1252 (2010).

B. Zhu, X. Liu, "Ultra-long-haul transmission of 1.2-Tb/s multicarrier no-guard-interval CO-OFDM superchannel using ultra-large-area fiber," IEEE Photon. Technol. Lett. 22, 826-828 (2010).

S. K. Ibrahim, J. Zhao, F. C. G. Gunning, P. Frascella, F. H. Peters, a. D. Ellis, "Towards a practical implementation of coherent WDM: Analytical, numerical, and experimental studies," IEEE Photon. J. 2, 833-847 (2010).

X. Yi, N. Fontaine, "Tb/s Coherent Optical OFDM Systems Enabled by Optical Frequency Combs," J. Lightw. Technol. 28, 2054-2061 (2010).

D. Hillerkuss, M. Winter, M. Teschke, A. Marculescu, J. Li, G. Sigurdsson, K. Worms, S. Ben Ezra, N. Narkiss, W. Freude, J. Leuthold, "Simple all-optical FFT scheme enabling Tbit/s real-time signal processing," Opt. Exp. 18, 9324-40 (2010).

2009 (4)

T. Kobayashi, A. Sano, "Over 100 Gb/s electro-optically multiplexed OFDM for high-capacity optical transport network," J. Lightw. Technol. 27, 3714-3720 (2009).

D. J. Geisler, N. K. Fontaine, T. He, R. P. Scott, L. Paraschis, J. P. Heritage, S. J. B. Yoo, "Modulation-format agile, reconfigurable Tb/s transmitter based on optical arbitrary waveform generation," Opt. Exp. 17 , 15 911-15 925 (2009).

A. Sano, E. Yamada, "No-guard-interval coherent optical OFDM for 100-Gb/s long-haul WDM transmission," J. Lightw. Technol. 27, 3705 -3713 (2009).

S. Chandrasekhar, X. Liu, "Experimental investigation on the performance of closely spaced multi-carrier PDM-QPSK with digital coherent detection," Opt. Exp. 17, 21350-21361 (2009).

2008 (3)

M. A. F. Roelens, S. Frisken, J. A. Bolger, D. Abakoumov, G. Baxter, S. Poole, B. J. Eggleton, "Dispersion trimming in a reconfigurable wavelength selective switch ," J. Lightw. Technol. 26, 73-78 (2008).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-59 (2008).

K. Lee, C. T. D. Thai, J.-K. K. Rhee, "All optical discrete Fourier transform processor for 100 Gbps OFDM transmission," Opt. Exp. 16, 4023-4028 (2008).

2006 (1)

A. Lowery, J. Armstrong, "Orthogonal-frequency-division multiplexing for dispersion compensation of long-haul optical systems ," Opt. Exp. 14, 2079-84 (2006).

J. Lightw. Technol. (1)

X. Yi, N. Fontaine, "Tb/s Coherent Optical OFDM Systems Enabled by Optical Frequency Combs," J. Lightw. Technol. 28, 2054-2061 (2010).

Opt. Exp. (1)

L. B. Du, A. J. Lowery, "No-guard-interval coherent optical OFDM with self-tuning receiver," Opt. Exp. 19, 2181-2186 (2011).

IEEE Photon. J. (1)

S. K. Ibrahim, J. Zhao, F. C. G. Gunning, P. Frascella, F. H. Peters, a. D. Ellis, "Towards a practical implementation of coherent WDM: Analytical, numerical, and experimental studies," IEEE Photon. J. 2, 833-847 (2010).

IEEE Photon. Technol. Lett. (3)

Y. Tang, W. Shieh, B. S. Krongold, "DFT-Spread OFDM for Fiber Nonlinearity Mitigation," IEEE Photon. Technol. Lett. 22, 1250-1252 (2010).

B. Zhu, X. Liu, "Ultra-long-haul transmission of 1.2-Tb/s multicarrier no-guard-interval CO-OFDM superchannel using ultra-large-area fiber," IEEE Photon. Technol. Lett. 22, 826-828 (2010).

F. Gunning, T. Healy, A. Ellis, "Dispersion tolerance of coherent WDM," IEEE Photon. Technol. Lett. 18, 1338-1340 (2006 ).

J. Lightw. Technol. (4)

T. Kobayashi, A. Sano, "Over 100 Gb/s electro-optically multiplexed OFDM for high-capacity optical transport network," J. Lightw. Technol. 27, 3714-3720 (2009).

G. Bosco, V. Curri, A. Carena, "On the performance of Nyquist-WDM terabit superchannels based on PM-BPSK, PM-QPSK, PM-8QAM or PM-16QAM subcarriers," J. Lightw. Technol. 29, 53 -61 (2011).

A. Sano, E. Yamada, "No-guard-interval coherent optical OFDM for 100-Gb/s long-haul WDM transmission," J. Lightw. Technol. 27, 3705 -3713 (2009).

M. A. F. Roelens, S. Frisken, J. A. Bolger, D. Abakoumov, G. Baxter, S. Poole, B. J. Eggleton, "Dispersion trimming in a reconfigurable wavelength selective switch ," J. Lightw. Technol. 26, 73-78 (2008).

Nat. Photon. (1)

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. Huebner, J. Becker, C. Koos, W. Freude, J. Leuthold, "26 Tbit/s line-rate super-channel transmission utilizing all-optical fast Fourier transform processing," Nat. Photon. 5, 364-371 (2011).

Opt. Exp. (1)

S. Shimizu, G. Cincotti, N. Wada, "Demonstration and performance investigation of all-optical OFDM systems based on arrayed waveguide gratings," Opt. Exp. 20, B525-34 (2012).

Opt. Exp. (1)

Z. Wang, K. S. Kravtsov, Y.-K. Huang, P. R. Prucnal, "Optical FFT/IFFT circuit realization using arrayed waveguide gratings and the applications in all-optical OFDM system," Opt. Exp. 19, 4501-4512 (2011).

Opt. Exp. (17)

D. J. Geisler, N. K. Fontaine, T. He, R. P. Scott, L. Paraschis, J. P. Heritage, S. J. B. Yoo, "Modulation-format agile, reconfigurable Tb/s transmitter based on optical arbitrary waveform generation," Opt. Exp. 17 , 15 911-15 925 (2009).

J. Schröder, M. A. F. Roelens, L. B. Du, A. J. Lowery, S. Frisken, B. J. Eggleton, "An optical FPGA: Reconfigurable simultaneous multi-output spectral pulse-shaping for linear optical processing," Opt. Exp. 21, 690-697 (2013).

D. Hillerkuss, M. Winter, M. Teschke, A. Marculescu, J. Li, G. Sigurdsson, K. Worms, S. Ben Ezra, N. Narkiss, W. Freude, J. Leuthold, "Simple all-optical FFT scheme enabling Tbit/s real-time signal processing," Opt. Exp. 18, 9324-40 (2010).

I. Kang, S. Chadrasekhar, M. Rasras, X. Liu, M. Cappuzzo, L. T. Gomez, Y. F. Chen, L. Buhl, S. Cabot, J. Jaques, "Long-haul transmission of 35-Gb/s all-optical OFDM signal without using tunable dispersion compensation and time gating," Opt. Exp. 19, 811-816 (2011).

L. B. Du, A. J. Lowery, "Optimizing the subcarrier granularity of coherent optical communications systems," Opt. Exp. 19, (2011 ).

I. Kang, X. Liu, S. Chandrasekhar, M. Rasras, H. Jung, M. Cappuzzo, Y. F. Chen, L. Buhl, S. Cabot, J. Jaques, "OFDM transmission using photonic-integrated all-optical discrete Fourier transform ," Opt. Exp. 20, 896-904 (2012).

A. J. Lowery, "Inserting a cyclic prefix using arrayed-waveguide grating routers in all-optical OFDM transmitters," Opt. Exp. 20 , 9742-9754 (2012 ).

K. Lee, C. T. D. Thai, J.-K. K. Rhee, "All optical discrete Fourier transform processor for 100 Gbps OFDM transmission," Opt. Exp. 16, 4023-4028 (2008).

S. Kilmurray, T. Fehenberger, P. Bayvel, R. Killey, "Comparison of the nonlinear transmission performance of quasi-Nyquist WDM and reduced guard interval OFDM," Opt. Exp. 20 , 1027-1030 (2012 ).

A. J. Lowery, L. Du, "All-optical OFDM transmitter design using AWGRs and low-bandwidth modulators," Opt. Exp. 19, 15696-15704 (2011).

H. Chen, X. Gu, F. Yin, M. Chen, S. Xie, " 5x200Gbit/s all-optical OFDM transmission using a single optical source and optical Fourier transform real-time detection," Opt. Exp. 19, 21 199-21 204 (2011).

T. Hirooka, P. Ruan, P. Guan, M. Nakazawa, "Highly dispersion-tolerant 160 Gbaud optical Nyquist pulse TDM transmission over 525 km," Opt. Exp. 20, 15001-1-15001-7 ( 2012).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-59 (2008).

A. Lowery, J. Armstrong, "Orthogonal-frequency-division multiplexing for dispersion compensation of long-haul optical systems ," Opt. Exp. 14, 2079-84 (2006).

A. J. Lowery, "Design of arrayed-waveguide grating routers for use as optical OFDM demultiplexers," Opt. Exp. 18, 14129-14143 (2010 ).

S. Chandrasekhar, X. Liu, "Experimental investigation on the performance of closely spaced multi-carrier PDM-QPSK with digital coherent detection," Opt. Exp. 17, 21350-21361 (2009).

L. B. Du, A. J. Lowery, "The validity of “Odd and Even” channels for testing all-optical OFDM and Nyquist WDM long-haul fiber systems," Opt. Exp. 20, B445-B451 (2012 ).

Opt. Lett. (1)

K. Takiguchi, T. Kitoh, A. Mori, "Optical orthogonal frequency division multiplexing demultiplexer using slab star coupler-based optical discrete Fourier transform circuit ," Opt. Lett. 36, 1140-1142 (2011).

Other (10)

A. J. Lowery, J. Schröder, and L. B. Du, “Flexible all-optical frequency allocation of OFDM subcarriers,” Opt. Exp., 2013, in review..

J. B. Schröder, L. B. Du, M. M. Morshed, B. Eggleton, and A. J. Lowery, “Colorless Flexible Signal Generator for Elastic Networks and Rapid Prototyping,” presented at the Optical Fiber Communication Conf.,   Anaheim, CA, USA, Mar. 2013, Paper JW2A.44..

J. Schröder, L. B. Du, M. A. Roelens, B. J. Eggleton, A. J. Lowery, "Reconfigurable all-optical Discrete Fourier Transform in a Wavelength Selective Switch for Optical OFDM demultiplexing," Proc. Opt. Fiber Commun. Conf. (2012) pp. OTh1G.6.

Z. Dong, X. Xia, Y. Xia, S. Shi, C. Ge, W. Zhou, N. Chi, and Y. Shao, “Generation, transmission and coherent detection of 11.2 Tb/s (112x100Gb/s) single source optical OFDM superchannel,” presented at the Proc. Optical Fiber Communication Conf. Los Angeles, CA, USA, 2011, Paper PDPA6. .

L. B. Du, J. Schöeder, M. M. Morshed, B. Eggleton, and A. J. Lowery, “Optical inverse fourier transform generated 11.2-Tbit/s no-guard-interval all-optical OFDM transmission,” presented at the Optical Fiber Communication Conf., Anaheim, CA, USA, Mar. 2013, Paper OW3B.5..

J. Yu, Z. Dong, H.-C. Chien, X. Xiao, and Z. Jia, “30-Tb/s (3x12.84-Tb/s) Signal Transmission over 320km Using PDM 64-QAM Modulation,” in Proc. Opt. Fiber Commun. Conf., 2012, vol. 1, p. OM2A.4..

X. Liu, S. Chandrasekhar, B. Zhu, and D. W. Peckham, “Efficient Digital Coherent Detection of a 1.2-Tb/s 24-Carrier No-Guard-Interval CO-OFDM Signal by Simultaneously Detecting Multiple Carriers Per Sampling,” presented at the Optical Fiber Communication Conf., San Diego, CA, USA, 2010, Paper. OWO2..

A. Sano, H. Masuda, E. Yoshida, T. Kobayashi, E. Yamada, Y. Miyamoto, F. Inuzuka, Y. Hibino, Y. Taktori, K. Hagimoto, T. Yamada, and Y. Sakamaki, “30x100-Gb/s all-optical OFDM transmission over 1300 km SMF with 10 ROADM nodes,” presented at the Proc. European Conf. Optical Communication, Berlin, Germany, 2007, no. 1, Paper PDS1.7..

L. B. Du, J. Schröder, B. J. Eggleton, A. J. Lowery, "Reconfigurable optical OFDM transmitter using an inverse optical Fourier transform," Proc. Opto-Electron. Commun. Conf. ( 2012) pp. PDP1-PDP1.

L. B. Du, J. B. Schröder, and A. J. Lowery, “Blind Subcarrier Equalization without Pre-filtering for Optical OFDM systems,” presented at the Proc. Optical Fiber Communication Conf., Los Angeles, CA, USA, 2012, Paper OM2H.6..

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