Abstract

In this paper, differential polarization-phase-shift keying (DPolPSK) is proposed for digital lightwave communication, in which information is encoded in both polarization and phase. The DPolPSK symbols are demodulated by optical delayed interference and electrical multilevel detection, without using any polarization control or polarization selection at the receiver. Simulation results show that single-channel error-free transmission at 20 Gb/s (10 Gsymbol/s) through 25 spans of 100 km standard single-mode fiber is possible. Unlike for DPSK, the Gaussian BER estimation method is found to be reasonably accurate for this new modulation format. The constellation diagram of DPolPSK can be represented by a set of Jones vectors. Hence DPolPSK can also be called differential Jones-vector shift keying (DJSK).

© 2004 Optical Society of America

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References

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CLEO 1999 (1)

M.I. Hayee, M.C. Cardakli, and A.E. Willner, �??Power unbalanced polarization-division-multiplexing for efficient bandwidth utilization,�?? in Proceedings of Conference on Lasers and Electro-Optics (Institute of Electrical and Electronics Engineers, New York, 1999), pp. 181-182.

IEEE Photon. Technol. Lett. (4)

X. Wei, X. Liu, C. Xu, �??Numerical simulation of the SPM penalty in a 10-Gb/s RZ-DPSK system,�?? IEEE Photon. Technol. Lett. 15, 1636-1638 (2003).
[CrossRef]

L. E. Nelson, T. N. Nielsen, and H. Kogelnik, �??Observation of PMD-induced coherent crosstalk in polarization-multiplexed transmission,�?? IEEE Photon. Technol. Lett. 13, 738-740 (2001).
[CrossRef]

A. R. Chraplyvy, A. H.Gnauck, R. W. Tkach, J. L. Zyskind, J. W. Sulhoff, A. J. Lucero, Y. Sun, R. M. Jopson, F. Forghieri, R. M. Derosier, C. Wolf, and A. R. McCormick, �??1-Tb/s transmission experiment,�?? IEEE Photon. Technol. Lett. 8, 1264-1266 (1996).
[CrossRef]

X. Liu, C. Xu, and X. Wei, �??Performance analysis of time-polarization multiplexed 40-Gb/s RZ-DPSK DWDM transmission,�?? IEEE Photon. Technol. Lett. 16, 302-304 (2004).
[CrossRef]

J. Lightwave Technol. (2)

S. Betti, G. De Marchis, and E. Iannone, �??Polarization modulated direct detection optical transmission systems,�?? J. Lightwave Technol. 10, 1985-1997 (1992).
[CrossRef]

S. Walklin, and J. Conradi, �??Multilevel signaling for increasing the reach of 10 Gb/s lightwave systems,�?? J. Lightwave Technol. 17, 2235-2248 (1999).
[CrossRef]

J. Select. Areas in Commun. (1)

S. Benedetto, R. Gaudino, and P. Poggiolini, �??Direct detection of optical digital transmission based on polarization shift keying modulation,�?? J. Select. Areas in Commun. 13, 531-542 (1995).
[CrossRef]

OFC 2001 (1)

S. Bigo, Y. Frignac, G. Charlet, W. Idler, S. Borne, H. Gross, R. Dischler, W. Poehlmann, P. Tran, C. Simonneau, D. Bayart, G. Veith, A. Jourdan, J.-P. Hamaide, �??10.2 Tbit/s (256x42.7 Gbit/s PDM/WDM) transmission over 100 km TeraLightTM fiber with 1.28 bit/s/Hz spectral efficiency,�?? in Proceedings of Optical Fiber Communications Conference (Institute of Electrical and Electronics Engineers, New York, 2001), paper PD25-1.

OFC 2002 (1)

R. A. Griffin, and A. C. Carter, �??Optical differential quadrature phase-shift key (oDQPSK) for high capacity optical transmission,�?? in Proceedings of Optical Fiber Communications Conference (Institute of Electrical and Electronics Engineers, New York, 2002), pp.367-368.
[CrossRef]

Opt. Lett. (1)

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Figures (6)

Fig. 1.
Fig. 1.

Block diagram of quaternary DPolPSK transmitter and receiver.

Fig. 2.
Fig. 2.

Four Jones vectors corresponding to four symbols in quaternary DPolPSK.

Fig. 3.
Fig. 3.

20Gb/s DPolPSK 2500 km SMF transmission setup.

Fig. 4.
Fig. 4.

Eye diagrams (a) before and (b) after 2500 km transmission.

Fig. 5.
Fig. 5.

Back-to-back BERs obtained by using Gaussian statistics and direct error counting.

Fig. 6.
Fig. 6.

BERs obtained by using Gaussian statistics and direct error counting after 45 spans transmission.

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