Abstract

We experimentally demonstrate a chromatic dispersion insensitive monitoring technique for monitoring of polarization mode dispersion and time misalignment in a 80Gbit/s polarization-multiplexed return-to-zero differential phase-shift-keying (Pol-MUX RZ-DPSK) signal using a polarimeter and degree-of polarization (DOP) measurements. This technique is modulation format independent (i.e., applicable to both the phase- and amplitude-modulated data) and capable of measuring the fast change of polarization effects caused by vibration or other fast disturbances in the fiber link. We show that the monitored DOP of this signal decreases by 10.8% with differential group delay of 012ps and decreases by 20% with a maximum misalignment of 12.5ps between two orthogonally polarized RZ-DPSK channels. These measurements are less sensitive to chromatic dispersion of 0400ps/nm.

© 2011 Optical Society of America

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  1. A. E. Willner, J.-Y. Yang, and X. Wu, in Optical Performance Monitoring, K.C.Chan, ed. (Academic, 2010), pp. 1–16.
    [CrossRef]
  2. T. B. Anderson, A. Kowalczyk, K. Clarke, S. D. Dods, D. Hewitt, and J. C. Li, J. Lightwave Technol. 27, 3729 (2009).
    [CrossRef]
  3. A. Gnauck and P. J. Winzer, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2010), paper OWE4.
  4. C. Xie, Opt. Express 17, 4815 (2009).
    [CrossRef] [PubMed]
  5. S. Chandrasekhar and X. Liu, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OThU7.
    [PubMed]
  6. F. N. Hauske, M. Kuschnerov, B. Spinnler, and B. Lankl, J. Lightwave Technol. 27, 3623 (2009).
    [CrossRef]
  7. J.-Y. Yang, L. Zhang, Y. Yue, J. Jackel, A. Agarwal, L. Paraschis, and A. E. Willner, Opt. Express 17, 18171 (2009).
    [CrossRef] [PubMed]
  8. P. A. Williams, T. Dennis, I. Coddington, and N. R. Newbury, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper OThH2 .
  9. S. M. R. Motaghian Nezam, J. E. McGeehan, and A. E. Willner, J. Lightwave Technol. 22, 763 (2004).
    [CrossRef]
  10. J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
    [CrossRef]
  11. H. Louchet, I. Koltchanov, and A. Richter, in 2010 Asia Communications and Photonics Conference and Exhibition (ACP), (IEEE, 2010), pp. 357–358.
    [CrossRef]
  12. C. Xie, Chin. Opt. Lett. 8, 844 (2010).
    [CrossRef]

2010 (5)

A. E. Willner, J.-Y. Yang, and X. Wu, in Optical Performance Monitoring, K.C.Chan, ed. (Academic, 2010), pp. 1–16.
[CrossRef]

A. Gnauck and P. J. Winzer, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2010), paper OWE4.

J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
[CrossRef]

H. Louchet, I. Koltchanov, and A. Richter, in 2010 Asia Communications and Photonics Conference and Exhibition (ACP), (IEEE, 2010), pp. 357–358.
[CrossRef]

C. Xie, Chin. Opt. Lett. 8, 844 (2010).
[CrossRef]

2009 (5)

2008 (1)

S. Chandrasekhar and X. Liu, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OThU7.
[PubMed]

2004 (1)

Agarwal, A.

Anderson, T. B.

Chandrasekhar, S.

S. Chandrasekhar and X. Liu, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OThU7.
[PubMed]

Chitgarha, M. R.

J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
[CrossRef]

Clarke, K.

Coddington, I.

P. A. Williams, T. Dennis, I. Coddington, and N. R. Newbury, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper OThH2 .

Dennis, T.

P. A. Williams, T. Dennis, I. Coddington, and N. R. Newbury, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper OThH2 .

Dods, S. D.

Gnauck, A.

A. Gnauck and P. J. Winzer, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2010), paper OWE4.

Hauske, F. N.

Hewitt, D.

Jackel, J.

Koltchanov, I.

H. Louchet, I. Koltchanov, and A. Richter, in 2010 Asia Communications and Photonics Conference and Exhibition (ACP), (IEEE, 2010), pp. 357–358.
[CrossRef]

Kowalczyk, A.

Kuschnerov, M.

Lankl, B.

Li, J. C.

Liu, X.

S. Chandrasekhar and X. Liu, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OThU7.
[PubMed]

Louchet, H.

H. Louchet, I. Koltchanov, and A. Richter, in 2010 Asia Communications and Photonics Conference and Exhibition (ACP), (IEEE, 2010), pp. 357–358.
[CrossRef]

McGeehan, J. E.

Motaghian Nezam, S. M. R.

Newbury, N. R.

P. A. Williams, T. Dennis, I. Coddington, and N. R. Newbury, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper OThH2 .

Paraschis, L.

Richter, A.

H. Louchet, I. Koltchanov, and A. Richter, in 2010 Asia Communications and Photonics Conference and Exhibition (ACP), (IEEE, 2010), pp. 357–358.
[CrossRef]

Spinnler, B.

Williams, P. A.

P. A. Williams, T. Dennis, I. Coddington, and N. R. Newbury, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper OThH2 .

Willner, A. E.

J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
[CrossRef]

A. E. Willner, J.-Y. Yang, and X. Wu, in Optical Performance Monitoring, K.C.Chan, ed. (Academic, 2010), pp. 1–16.
[CrossRef]

J.-Y. Yang, L. Zhang, Y. Yue, J. Jackel, A. Agarwal, L. Paraschis, and A. E. Willner, Opt. Express 17, 18171 (2009).
[CrossRef] [PubMed]

S. M. R. Motaghian Nezam, J. E. McGeehan, and A. E. Willner, J. Lightwave Technol. 22, 763 (2004).
[CrossRef]

Winzer, P. J.

A. Gnauck and P. J. Winzer, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2010), paper OWE4.

Wu, X.

A. E. Willner, J.-Y. Yang, and X. Wu, in Optical Performance Monitoring, K.C.Chan, ed. (Academic, 2010), pp. 1–16.
[CrossRef]

Xie, C.

Yang, J.-Y.

A. E. Willner, J.-Y. Yang, and X. Wu, in Optical Performance Monitoring, K.C.Chan, ed. (Academic, 2010), pp. 1–16.
[CrossRef]

J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
[CrossRef]

J.-Y. Yang, L. Zhang, Y. Yue, J. Jackel, A. Agarwal, L. Paraschis, and A. E. Willner, Opt. Express 17, 18171 (2009).
[CrossRef] [PubMed]

Yue, Y.

Zhang, L.

J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
[CrossRef]

J.-Y. Yang, L. Zhang, Y. Yue, J. Jackel, A. Agarwal, L. Paraschis, and A. E. Willner, Opt. Express 17, 18171 (2009).
[CrossRef] [PubMed]

Chin. Opt. Lett. (1)

J. Lightwave Technol. (3)

Opt. Express (2)

Other (6)

S. Chandrasekhar and X. Liu, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OThU7.
[PubMed]

A. Gnauck and P. J. Winzer, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2010), paper OWE4.

P. A. Williams, T. Dennis, I. Coddington, and N. R. Newbury, in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper OThH2 .

J.-Y. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, in Proceedings of the 2010 23rd Annual Meeting of IEEE Photonics Society (IEEE, 2010), pp. 32–33.
[CrossRef]

H. Louchet, I. Koltchanov, and A. Richter, in 2010 Asia Communications and Photonics Conference and Exhibition (ACP), (IEEE, 2010), pp. 357–358.
[CrossRef]

A. E. Willner, J.-Y. Yang, and X. Wu, in Optical Performance Monitoring, K.C.Chan, ed. (Academic, 2010), pp. 1–16.
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

Conceptual diagram of optical monitoring of (a) time misalignment and (b) first-order PMD (i.e., the signal is launched at 45 ° onto a DGD element) in a Pol-MUX RZ-DPSK signal using a polarimeter and DOP measurements.

Fig. 2
Fig. 2

Experimental setup: time misalignments are changed by adjusting a tunable optical delay line, and DGD accumulations are changed by tuning a tunable DGD emulator.

Fig. 3
Fig. 3

Measured DOP change under various time misalignments. The insets show the measured waveforms.

Fig. 4
Fig. 4

Measured traces on a Poincaré sphere without DGD and with 9 ps DGD in a 80 Gbit / s synchronized Pol-MUX RZ-DPSK signal. The trace is scattered due to DGD.

Fig. 5
Fig. 5

Measured DOP variations of a time- synchronized Pol-MUX RZ-DPSK signal in the presence of different DGD and chromatic dispersion.

Fig. 6
Fig. 6

Measured DOP variations of a time- interleaved Pol-MUX RZ-DPSK signal in the presence of different DGD and chromatic dispersion.

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