Abstract

The generation of coherent and frequency-locked optical multi-carriers by using cascaded phase modulators and recirculating frequency shifter (RFS) based on an erbium doped fiber amplifier (EDFA) loop has been investigated theoretically and experimentally for a multi-terabit optical orthogonal frequency division multiplexing (OFDM) superchannel transmission. The phase and amplitude relationship between RF driving signals of two cascaded phase modulators and the impact of EDFA gain are analyzed. Experimental results are in good agreement with the theoretical analysis. The 112 coherent and frequency-locked subcarriers obtained after tilt filtering exhibit a tone-to-noise ratio of larger than 26 dB, a power fluctuation of less than 5 dB, and a frequency spacing of 25 GHz giving a 22.6 nm-wide optical OFDM signal spectrum. By using this method, we have successfully generated a 10-Tbit/s (112 × 100 Gbit/s) single optical OFDM polarization-division-multiplexing QPSK (PDM-QPSK) superchannel with an optical signal to noise ratio per OFDM subchannel greater than 20 dB at 0.1 nm bandwidth, and it has been transmitted over a 640-km SMF-28 and EDFA-only link with BER less than 2 × 10<sup>-3</sup>.

© 2011 IEEE

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  1. T. Sakamoto, T. Yamamoto, K. Kurokawa, S. Tomita, "DWDM transmission in O-band over 24 km PCF using optical frequency comb based multicarrier source," Electron Lett. 45, 850-851 (2009).
  2. S. Liu, T. T. Ng, D. J. Richardson, P. Petropoulos, "An optical frequency comb generator as a broadband pulse source," Proc. OFC. (2009).
  3. Y. Ma, Q. Yang, Y. Tang, S. Chen, W. Shieh, "1-Tb/s single-channel coherent optical OFDM transmission over 600-km SSMF fiber with subwavelength bandwidth access," Opt. Exp. 17, 9421-9427 (2009).
  4. S. Chandrasekhar, X. Liu, B. Zhu, D. Peckham, "Transmission of a 1.2-Tb/s 24-carrier no-guard-interval coherent OFDM superchannel over 7200-km of ultra-large-area fiber," Proc. ECOC (2009).
  5. J. Yu, X. Zhou, M.-F. Huang, D. Qian, P. N. Ji, T. Wang, P. Magill, "400 Gb/s (4$\,\times\,$100 Gb/s) orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040 km SMF-28," Opt. Exp. 17, 17928-17933 (2009).
  6. G. Gavioli, E. Torrengo, G. Bosco, A. Carena, S. Savory, F. Forghieri, P. Poggiolin, "Ultra-narrow-spacing 10-channel 1.12 Tb/s D-WDM long-haul transmission over uncompensated SMF and NZDSF," IEEE Photon. Technol. Lett. 22, 1419-1421 (2010).
  7. J. Yu, "1.2 Tbit/s orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040 km SMF-28," Electron. Lett. 46, 775-777 (2010).
  8. B. Zhu, X. Liu, S. Chandrasekhar, D. Peckham, R. Lingle, "Ultra-long-haul transmission of 1.2-Tb/s multicarrier no-guard-interval CO-OFDM superchannel using ultra-large-area fiber," IEEE Photon. Technol. Lett. 22, 826-828 (2010).
  9. Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).
  10. X. Liu, S. Chandrasekhar, B. Zhu, D. Peckham, "Efficient digital coherent detection of a 1.2-Tb/s 24-carrier no-guard-interval CO-OFDM signal by simultaneously detecting multiple carriers per sampling," Proc. OFC (2010).
  11. H. Masuda, E. Yamazaki, A. Sano, T. Yoshimatsu, T. Kobayashi, E. Yoshida, Y. Miyamoto, S. Matsuoka, Y. Takatori, M. Mizoguchi, K. Okada, K. Hagimoto, T. Yamada, S. Kamei, "13.5-Tb/s (135$\,\times\,$111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 6 248 km using SNR maximized second-order DRA in the extended L-band," Proc. OFC (2009).
  12. T. Healy, "Multi-wavelength source using low drive-voltage amplitude modulators for optical communications," Opt. Exp. 15, 2981-2986 (2007).
  13. J. Li, X. Li, X. Zhang, F. Tian, L. Xi, "Analysis of the stability and optimizing operation of the single-side-band modulator based on re-circulating frequency shifter used for the T-bit/s optical communication transmission," Opt. Exp. 18, 17597-17609 (2010).
  14. D. Hillerkuss, "Single source optical OFDM transmitter and optical FFT receiver demonstrated at line rates of 5.4 and 10.8 Tbit/s," Proc. OFC (2010).
  15. A. Bellemare, "Room temperature multifrequency erbium-doped fiber lasers anchored on the ITU frequency grid," J. Lightw. Technol. 18, 825-831 (2000).
  16. K. Zhou, "Room-temperature multiwavelength erbium-doped fiber ring laser employing sinusoidal phase-modulation feedback," Opt. Lett. 28, 893-895 (2003).
  17. J. Yao, J. Yao, Z. Deng, J. Liu, "Multiwavelength erbium-doped fiber ring laser incorporating an SOA-based phase modulator," IEEE Photon. Technol. Lett. 17, 756-758 (2005).
  18. M. A. Mirza, G. Stewart, "Multiwavelength operation of erbium-doped fiber lasers by period filtering and phase modulation," J. Lightw. Technol. 27, 1034-1044 (2009).
  19. J. Zhang, N. Chi, J. Yu, Y. Shao, J. Zhu, B. Huang, L. Tao, "Generation of coherent and frequency-lock multi-carriers using cascaded phase modulators and recirculating frequency shifter for Tb/s optical communication," Opt. Exp. 19, 12891-12902 (2011).
  20. J. Yu, Z. Dong, X. Xiao, Y. Xia, S. Shi, C. Ge, W. Zhou, N. Chi, Y. Shao, "Generation of 112 coherent multi-carriers and transmission of 10 Tb/s (112$\,\times\,$100 Gb/s) single optical OFDM superchannel over 640 km SMF," Proc. OFC (2011).

2011 (1)

J. Zhang, N. Chi, J. Yu, Y. Shao, J. Zhu, B. Huang, L. Tao, "Generation of coherent and frequency-lock multi-carriers using cascaded phase modulators and recirculating frequency shifter for Tb/s optical communication," Opt. Exp. 19, 12891-12902 (2011).

2010 (4)

G. Gavioli, E. Torrengo, G. Bosco, A. Carena, S. Savory, F. Forghieri, P. Poggiolin, "Ultra-narrow-spacing 10-channel 1.12 Tb/s D-WDM long-haul transmission over uncompensated SMF and NZDSF," IEEE Photon. Technol. Lett. 22, 1419-1421 (2010).

J. Yu, "1.2 Tbit/s orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040 km SMF-28," Electron. Lett. 46, 775-777 (2010).

B. Zhu, X. Liu, S. Chandrasekhar, D. Peckham, R. Lingle, "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).

J. Li, X. Li, X. Zhang, F. Tian, L. Xi, "Analysis of the stability and optimizing operation of the single-side-band modulator based on re-circulating frequency shifter used for the T-bit/s optical communication transmission," Opt. Exp. 18, 17597-17609 (2010).

2009 (5)

T. Sakamoto, T. Yamamoto, K. Kurokawa, S. Tomita, "DWDM transmission in O-band over 24 km PCF using optical frequency comb based multicarrier source," Electron Lett. 45, 850-851 (2009).

Y. Ma, Q. Yang, Y. Tang, S. Chen, W. Shieh, "1-Tb/s single-channel coherent optical OFDM transmission over 600-km SSMF fiber with subwavelength bandwidth access," Opt. Exp. 17, 9421-9427 (2009).

J. Yu, X. Zhou, M.-F. Huang, D. Qian, P. N. Ji, T. Wang, P. Magill, "400 Gb/s (4$\,\times\,$100 Gb/s) orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040 km SMF-28," Opt. Exp. 17, 17928-17933 (2009).

Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).

M. A. Mirza, G. Stewart, "Multiwavelength operation of erbium-doped fiber lasers by period filtering and phase modulation," J. Lightw. Technol. 27, 1034-1044 (2009).

2007 (1)

T. Healy, "Multi-wavelength source using low drive-voltage amplitude modulators for optical communications," Opt. Exp. 15, 2981-2986 (2007).

2005 (1)

J. Yao, J. Yao, Z. Deng, J. Liu, "Multiwavelength erbium-doped fiber ring laser incorporating an SOA-based phase modulator," IEEE Photon. Technol. Lett. 17, 756-758 (2005).

2003 (1)

2000 (1)

A. Bellemare, "Room temperature multifrequency erbium-doped fiber lasers anchored on the ITU frequency grid," J. Lightw. Technol. 18, 825-831 (2000).

Electron Lett. (1)

T. Sakamoto, T. Yamamoto, K. Kurokawa, S. Tomita, "DWDM transmission in O-band over 24 km PCF using optical frequency comb based multicarrier source," Electron Lett. 45, 850-851 (2009).

Electron. Lett. (1)

J. Yu, "1.2 Tbit/s orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040 km SMF-28," Electron. Lett. 46, 775-777 (2010).

IEEE Photon. Technol. Lett. (3)

B. Zhu, X. Liu, S. Chandrasekhar, D. Peckham, R. Lingle, "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).

G. Gavioli, E. Torrengo, G. Bosco, A. Carena, S. Savory, F. Forghieri, P. Poggiolin, "Ultra-narrow-spacing 10-channel 1.12 Tb/s D-WDM long-haul transmission over uncompensated SMF and NZDSF," IEEE Photon. Technol. Lett. 22, 1419-1421 (2010).

J. Yao, J. Yao, Z. Deng, J. Liu, "Multiwavelength erbium-doped fiber ring laser incorporating an SOA-based phase modulator," IEEE Photon. Technol. Lett. 17, 756-758 (2005).

J. Lightw. Technol. (3)

M. A. Mirza, G. Stewart, "Multiwavelength operation of erbium-doped fiber lasers by period filtering and phase modulation," J. Lightw. Technol. 27, 1034-1044 (2009).

Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).

A. Bellemare, "Room temperature multifrequency erbium-doped fiber lasers anchored on the ITU frequency grid," J. Lightw. Technol. 18, 825-831 (2000).

Opt. Exp. (5)

Y. Ma, Q. Yang, Y. Tang, S. Chen, W. Shieh, "1-Tb/s single-channel coherent optical OFDM transmission over 600-km SSMF fiber with subwavelength bandwidth access," Opt. Exp. 17, 9421-9427 (2009).

J. Zhang, N. Chi, J. Yu, Y. Shao, J. Zhu, B. Huang, L. Tao, "Generation of coherent and frequency-lock multi-carriers using cascaded phase modulators and recirculating frequency shifter for Tb/s optical communication," Opt. Exp. 19, 12891-12902 (2011).

J. Yu, X. Zhou, M.-F. Huang, D. Qian, P. N. Ji, T. Wang, P. Magill, "400 Gb/s (4$\,\times\,$100 Gb/s) orthogonal PDM-RZ-QPSK DWDM signal transmission over 1040 km SMF-28," Opt. Exp. 17, 17928-17933 (2009).

T. Healy, "Multi-wavelength source using low drive-voltage amplitude modulators for optical communications," Opt. Exp. 15, 2981-2986 (2007).

J. Li, X. Li, X. Zhang, F. Tian, L. Xi, "Analysis of the stability and optimizing operation of the single-side-band modulator based on re-circulating frequency shifter used for the T-bit/s optical communication transmission," Opt. Exp. 18, 17597-17609 (2010).

Opt. Lett. (1)

Other (6)

D. Hillerkuss, "Single source optical OFDM transmitter and optical FFT receiver demonstrated at line rates of 5.4 and 10.8 Tbit/s," Proc. OFC (2010).

J. Yu, Z. Dong, X. Xiao, Y. Xia, S. Shi, C. Ge, W. Zhou, N. Chi, Y. Shao, "Generation of 112 coherent multi-carriers and transmission of 10 Tb/s (112$\,\times\,$100 Gb/s) single optical OFDM superchannel over 640 km SMF," Proc. OFC (2011).

S. Chandrasekhar, X. Liu, B. Zhu, D. Peckham, "Transmission of a 1.2-Tb/s 24-carrier no-guard-interval coherent OFDM superchannel over 7200-km of ultra-large-area fiber," Proc. ECOC (2009).

S. Liu, T. T. Ng, D. J. Richardson, P. Petropoulos, "An optical frequency comb generator as a broadband pulse source," Proc. OFC. (2009).

X. Liu, S. Chandrasekhar, B. Zhu, D. 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," Proc. OFC (2010).

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, S. Kamei, "13.5-Tb/s (135$\,\times\,$111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 6 248 km using SNR maximized second-order DRA in the extended L-band," Proc. OFC (2009).

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