Abstract

We report the generation of fifty 12.5-GHz-spaced optical carriers with high power flatness and stability by using a single-side band (SSB) modulator-based recirculating frequency shifter (RFS). The peak-to-peak power difference and the RMS power difference of the generated carriers are 2.5 and 0.3 dB, respectively. We also experimentally investigate the impact of implementation imperfections on the flatness of the generated carriers. The important factors that contribute to the flatness of the generated carriers are found to be the amplitude balance of two inphase (I) and quadrature (Q) drive signals for the SSB modulator, the time misalignment between the I and Q signals, the accuracy of the $\pi/2$ phase bias of the SSB modulator and the stability of the polarization alignment in the RFS. By carefully controlling all the factors mentioned earlier, we obtain stable operation of 50 frequency-locked carriers; showing that the SSB modulator-based RFS is a promising technique for future terabit per second multicarrier transmission.

© 2011 IEEE

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  1. W. Shieh, C. Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett. 42, 587-589 (2006).
  2. W. Shieh, X. Yi, Y. Tang, "Transmission experiment of multi-gigabit coherent optical OFDM systems over 1000 km SSMF fiber," Electron. Lett. 43, 183-185 (2007).
  3. S. L. Jansen, I. Morita, N. Takeda, H. Tanaka, "20-Gb/s OFDM transmission over 4 160-km SSMF enabled by RF-pilot tone phase noise compensation," Opt. Fiber Comm. Conf. AnaheimCA (2007) Paper PDP15.
  4. 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).
  5. W. Shieh, Q. Yang, Y. Ma, "107 Gb/s coherent optical OFDM transmission over 1000-km SSMF fiber using orthogonal band multiplexing," Opt. Exp. 16, 6378-6386 (2008).
  6. X. Liu, S. Chandrasekhar, B. Y. Zhu, 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," Proc. Opt. Fiber Commun. (OFC), Natl. Fiber Opt. Eng. Conf. (NFOEC) (2010) pp. 1-3.
  7. S. Chandrasekhar, X. Liu, B. Zhu, D. W. 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. Eur. Conf. Opt. Commun. (ECOC) (2009) pp. 1-2.
  8. Y. Ma, Q. Yang, Y. Tang, S. M. Chen, W. Shieh, "1-Tb/s single-channel coherent optical OFDM transmission with orthogonal-band multiplexing and subwavelength bandwidth access," J. Lightw. Technol. 28, 308-315 (2010).
  9. X. Liu, D. M. Gill, S. Chandrasekhar, L. L. Buhl, M. Earnshaw, M. A. Cappuzzo, L. T. Gomez, Y. Chen, F. P. Klemens, E. C. Burrows, Y.-K. Chen, R. W. Tkach, "Compact and broadband coherent receiver front-end for complete demodulation of a 1.12-terabit/s multi-carrier PDM-QPSK signal," Proc. Eur. Conf. Opt. Commun. (ECOC) (2009) pp. 1-2.
  10. Z. B. Xu, R. Q. Hui, M. O'Sulliva, "Dual-band OOFDM system based on tandem single-sideband modulation transmitter," Opt. Exp. 17, 13479-13486 (2009).
  11. Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).
  12. W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).
  13. J. P. Li, X. Li, X. G. Zhang, F. Tian, L. X. 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. W. Peng, B. Zhang, X. Wu, K. Feng, A. Willner, S. Chi, "Compensation for I/Q imbalances and bias deviation of the Mach–Zehnder modulators in direct-detected optical OFDM systems," IEEE Photon. Technol. 21, 103-105 (2009).
  15. J. P. Li, X. Li, X. G. Zhang, F. Tian, L. X. Xi, "Analysis of the stability of recirculating frequency shift used as a multi-tone wideband light source for Tb/s multi-carrier optical transmission," Proc. Eur. Conf. Opt. Commun. (ECOC) (2010) pp. 1-3.
  16. Y. Ma, Q. Yang, Y. Tang, S. M. 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).
  17. W. Shieh, "High spectral efficiency coherent optical OFDM for 1 Tb/s ethernet transport," Proc. Opt. Fiber Commun. (OFC) (2009) pp. 1-3.
  18. X. Liu, D. Gill, S. Chandrasekhar, L. Buhl, M. Earnshaw, M. Cappuzzo, L. Gomez, Y. Chen, F. Klemens, E. Burrows, Y. Chen, R. Tkach, "Multi-carrier coherent receiver based on a shared optical hybrid and a cyclic AWG array for terabit/s optical transmission," IEEE Photon. J. 2, 330-337 (2010).

2010 (3)

Y. Ma, Q. Yang, Y. Tang, S. M. Chen, W. Shieh, "1-Tb/s single-channel coherent optical OFDM transmission with orthogonal-band multiplexing and subwavelength bandwidth access," J. Lightw. Technol. 28, 308-315 (2010).

J. P. Li, X. Li, X. G. Zhang, F. Tian, L. X. 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).

X. Liu, D. Gill, S. Chandrasekhar, L. Buhl, M. Earnshaw, M. Cappuzzo, L. Gomez, Y. Chen, F. Klemens, E. Burrows, Y. Chen, R. Tkach, "Multi-carrier coherent receiver based on a shared optical hybrid and a cyclic AWG array for terabit/s optical transmission," IEEE Photon. J. 2, 330-337 (2010).

2009 (5)

W. Peng, B. Zhang, X. Wu, K. Feng, A. Willner, S. Chi, "Compensation for I/Q imbalances and bias deviation of the Mach–Zehnder modulators in direct-detected optical OFDM systems," IEEE Photon. Technol. 21, 103-105 (2009).

Y. Ma, Q. Yang, Y. Tang, S. M. 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).

Z. B. Xu, R. Q. Hui, M. O'Sulliva, "Dual-band OOFDM system based on tandem single-sideband modulation transmitter," Opt. Exp. 17, 13479-13486 (2009).

Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (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 (2)

W. Shieh, Q. Yang, Y. Ma, "107 Gb/s coherent optical OFDM transmission over 1000-km SSMF fiber using orthogonal band multiplexing," Opt. Exp. 16, 6378-6386 (2008).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

2007 (1)

W. Shieh, X. Yi, Y. Tang, "Transmission experiment of multi-gigabit coherent optical OFDM systems over 1000 km SSMF fiber," Electron. Lett. 43, 183-185 (2007).

2006 (1)

W. Shieh, C. Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett. 42, 587-589 (2006).

Electron. Lett. (2)

W. Shieh, C. Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett. 42, 587-589 (2006).

W. Shieh, X. Yi, Y. Tang, "Transmission experiment of multi-gigabit coherent optical OFDM systems over 1000 km SSMF fiber," Electron. Lett. 43, 183-185 (2007).

IEEE Photon. Technol. (1)

W. Peng, B. Zhang, X. Wu, K. Feng, A. Willner, S. Chi, "Compensation for I/Q imbalances and bias deviation of the Mach–Zehnder modulators in direct-detected optical OFDM systems," IEEE Photon. Technol. 21, 103-105 (2009).

IEEE Photon. J. (1)

X. Liu, D. Gill, S. Chandrasekhar, L. Buhl, M. Earnshaw, M. Cappuzzo, L. Gomez, Y. Chen, F. Klemens, E. Burrows, Y. Chen, R. Tkach, "Multi-carrier coherent receiver based on a shared optical hybrid and a cyclic AWG array for terabit/s optical transmission," IEEE Photon. J. 2, 330-337 (2010).

J. Lightw. Technol. (2)

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

Y. Ma, Q. Yang, Y. Tang, S. M. Chen, W. Shieh, "1-Tb/s single-channel coherent optical OFDM transmission with orthogonal-band multiplexing and subwavelength bandwidth access," J. Lightw. Technol. 28, 308-315 (2010).

Opt. Exp. (3)

Z. B. Xu, R. Q. Hui, M. O'Sulliva, "Dual-band OOFDM system based on tandem single-sideband modulation transmitter," Opt. Exp. 17, 13479-13486 (2009).

W. Shieh, Q. Yang, Y. Ma, "107 Gb/s coherent optical OFDM transmission over 1000-km SSMF fiber using orthogonal band multiplexing," Opt. Exp. 16, 6378-6386 (2008).

J. P. Li, X. Li, X. G. Zhang, F. Tian, L. X. 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. Exp. (3)

Y. Ma, Q. Yang, Y. Tang, S. M. 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).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

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).

Other (6)

X. Liu, D. M. Gill, S. Chandrasekhar, L. L. Buhl, M. Earnshaw, M. A. Cappuzzo, L. T. Gomez, Y. Chen, F. P. Klemens, E. C. Burrows, Y.-K. Chen, R. W. Tkach, "Compact and broadband coherent receiver front-end for complete demodulation of a 1.12-terabit/s multi-carrier PDM-QPSK signal," Proc. Eur. Conf. Opt. Commun. (ECOC) (2009) pp. 1-2.

X. Liu, S. Chandrasekhar, B. Y. Zhu, 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," Proc. Opt. Fiber Commun. (OFC), Natl. Fiber Opt. Eng. Conf. (NFOEC) (2010) pp. 1-3.

S. Chandrasekhar, X. Liu, B. Zhu, D. W. 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. Eur. Conf. Opt. Commun. (ECOC) (2009) pp. 1-2.

S. L. Jansen, I. Morita, N. Takeda, H. Tanaka, "20-Gb/s OFDM transmission over 4 160-km SSMF enabled by RF-pilot tone phase noise compensation," Opt. Fiber Comm. Conf. AnaheimCA (2007) Paper PDP15.

J. P. Li, X. Li, X. G. Zhang, F. Tian, L. X. Xi, "Analysis of the stability of recirculating frequency shift used as a multi-tone wideband light source for Tb/s multi-carrier optical transmission," Proc. Eur. Conf. Opt. Commun. (ECOC) (2010) pp. 1-3.

W. Shieh, "High spectral efficiency coherent optical OFDM for 1 Tb/s ethernet transport," Proc. Opt. Fiber Commun. (OFC) (2009) pp. 1-3.

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