Measured temporal and spectral PMD characteristics and their implications for network-level mitigation approaches

Signal degradation due to polarization-mode dispersion (PMD) effects may become significant for signaling rates of 10 Gb/s, 40 Gb/s, and beyond. To assess the utility of various PMD mitigation schemes, temporal and spectral measurements of differential group delay (DGD) were made on 95 km of buried standard single-mode fiber over an 86-d period to determine the distribution and rate of change of high-DGD events. As expected, statistical analysis of variations in DGD indicate that excursions from the mean DGD by factors of 3.7 or higher have very low probability. For this link, the DGD varied slowly with time (having a drift time of about 3.4 d) and rapidly with wavelength. The DGD data agree well with results of similar experiments reported in the literature. Statistical analysis of the measured DGD data shows that high-DGD episodes will be exceedingly rare and short-lived. The impact of PMD on network operations is explored and approaches to ensure network reliability are reviewed for network operators given the task of transporting high-bit-rate channels over fiber links with known PMD characteristics.

[1]  O. Karlsson,et al.  Long-term measurement of PMD and polarization drift in installed fibers , 2000, Journal of Lightwave Technology.

[2]  N. Gisin,et al.  Experimental investigations of the statistical properties of polarization mode dispersion in single mode fibers , 1993, IEEE Photonics Technology Letters.

[3]  Henning Bulow,et al.  Temporal dynamics of error-rate degradation induced by polarisation mode dispersion fluctuation of a field fiber link , 1997 .

[4]  Francesco Matera,et al.  Nonlinear Optical Communication Networks , 1998 .

[5]  C. Angelis,et al.  Time evolution of polarization mode dispersion in long terrestrial links , 1992 .

[6]  G. Jacobsen,et al.  Mitigation of polarization-mode dispersion in optical multichannel systems , 2000, Journal of Lightwave Technology.

[7]  J. Nagel,et al.  Chapter 6 – Polarization Effects in Lightwave Systems , 1997 .

[8]  F Matera,et al.  Evolution of the bandwidth of the principal states of polarization in single-mode fibers. , 1991, Optics letters.

[9]  A. Chraplyvy,et al.  Fading in lightwave systems due to polarization-mode dispersion , 1990, IEEE Photonics Technology Letters.

[10]  P. Ebrahimi,et al.  Polarization-mode dispersion compensation in WDM systems , 2001, IEEE Photonics Technology Letters.

[11]  Alan E. Willner,et al.  Comparison of different modulation formats in terrestrial systems with high polarization mode dispersion , 2000, Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079).

[12]  Yoshinori Namihira,et al.  Long-term polarization-mode-dispersion measurement of installed optical submarine cable , 1994 .

[13]  Benedetto Daino,et al.  Statistical treatment of the evolution of the principal states of polarization in single-mode fibers , 1990 .

[14]  Benyuan Zhu,et al.  An adaptive first-order polarization-mode dispersion compensation system aided by polarization scrambling: theory and demonstration , 2000, Journal of Lightwave Technology.

[15]  L.-S. Yan,et al.  Enhanced PMD mitigation using forward-error-correction coding and a first-order compensator , 2001, OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171).

[16]  T. Imai,et al.  Time evolution of polarisation mode dispersion in 120 km installed optical submarine cable , 1993 .

[17]  Nobuhiko Kikuchi,et al.  Analysis of signal degree of polarization degradation used as control signal for optical polarization mode dispersion compensation , 2001 .

[18]  H. Weber,et al.  Automatic PMD compensation at 40 Gbit/s and 80 Gbit/s using a 3-dimensional DOP evaluation for feedback , 2001, OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171).

[19]  F. Matera,et al.  Effect of polarization dispersion on the performance of IM-DD communication systems , 1993, IEEE Photonics Technology Letters.

[20]  M Karlsson,et al.  Autocorrelation function of the polarization-mode dispersion vector. , 1999, Optics letters.

[21]  WDM design issues with highly correlated PMD spectra of buried optical cables , 2002, Optical Fiber Communication Conference and Exhibit.

[22]  Liang Chen,et al.  Time evolution of polarization mode dispersion in optical fibers , 1998, IEEE Photonics Technology Letters.