Abstract

We experimentally investigate polarization-switched quadrature phase-shift keying (PS-QPSK) with a symbol rate of 37.3 GBd corresponding to a bit rate of 112 Gb/s. In a wavelength-division multiplexing (WDM) experiment with 50 GHz channel spacing, the transmission performance of PS-QPSK is compared to that of polarization-division multiplexed QPSK (PDM-QPSK) over an EDFA amplified ultra-large-effective-area fiber link. For a bit-error ratio (BER) of 3.8 × 10−3, the achieved transmission distance is 11000 km for PS-QSPK and 10000 km for PDM-QPSK.

© 2011 OSA

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. M. Salsi, H. Mardoyan, P. Tran, C. Koebele, E. Dutisseuil, G. Charlet, and S. Bigo, “155×100Gbit/s coherent PDM-QPSK transmission over 7,200km,” in Proc. 35th Eur. Conf. Opt. Commun., Sept. 2009, paper PD2.5.
  2. E. Torrengo, R. Cigliutti, G. Bosco, and G. Gavioli, A. Alaimo A. Carena, V. Curri, F. Forghieri, S. Piciaccia, M. Belmonte, A. Brinciotti, A. L. Porta, S. Abrate, and P. Poggiolini, “Transoceanic PM-QPSK Terabit superchannel transmission experiments at Baud-rate subcarrier spacing,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper We.7.C.2.
  3. M. Salsi, C. Koebele, P. Tran, H. Mardoyan, S. Bigo, and G. Charlet, “80×100-Gbit/s transmission over 9,000km using erbium-doped fibre repeaters only,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper We.7.C.3.
  4. J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. J. Lucero, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, and N. S. Bergano, “Transmission of 96×100-Gb/s Bandwidth-Constrained PDM-RZ-QPSK Channels With 300% Spectral Efficiency Over 10610 km and 400% SE Over 4370 km,” J. Lightwave Technol. 29, 491–498 (2011).
  5. M. Karlsson and E. Agrell, “Which is the most power-efficient modulation format in optical links?” Opt. Express 17(13), 10814–10819 (2009).
  6. E. Agrell and M. Karlsson, “Power efficient modulation formats in coherent transmission systems,” J. Lightwave Technol. 27(22), 5115–5126 (2009).
  7. H. Bülow, “Polarization QAM (POL-QAM) for coherent detection schemes,” in Proc. Opt. Fiber Commun. Conf., Mar. 2009, paper OWG2.
  8. P. Poggiolini, G. Bosco, A. Carena, V. Curri, and F. Forghieri, “Performance evaluation of coherent WDM PS-QPSK (HEXA) accounting for non-linear fiber propagation effects,” Opt. Express 18(11), 11360–11371 (2010).
  9. P. Serena, A. Vannucci, and A. Bononi, “The performance of polarization switched-QPSK (PS-QPSK) in dispersion managed WDM transmission,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper Th.10.E.2.
  10. D. S. Millar, D. Lavery, S. Makovejs, C. Behrens, B. C. Thomsen, P. Bayvel, and S. J. Savory, “Generation and long-haul transmission of polarization-switched QPSK at 42.9 Gb/s,” Opt. Express 19(10), 9296–9302 (2011).
  11. L. E. Nelson, X. Zhou, N. Mac Suibhne, A. D. Ellis, and P. Magill, “Experimental comparison of coherent polarization-switched QPSK to polarization-multiplexed QPSK for 10 × 100 km WDM transmission,” Opt. Express 19(11), 10849–10856 (2011).
  12. J. K. Fischer and L. Molle, M, Nölle, D.-D. Groß, and C. Schubert, “Experimental Investigation of 28-GBd Polarization-Switched Quadrature Phase-Shift Keying Signals,“ in Proc. 37th Eur. Conf. Opt. Commun., Sept. 2011, paper Mo.2.B.1.
  13. M. Wrigth, “Comments on ‘Aspects of MLS measuring systems,’,” J. Audio Eng. Soc. 43, 48–49 (1995).
  14. M. Sjödin, P. Johannisson, H. Wymeersch, P. A. Andrekson, and M. Karlsson, “Comparison of polarization-switched QPSK and polarization-multiplexed QPSK at 30 Gbit/s,” Opt. Express 19(8), 7839–7846 (2011).
  15. D. S. Millar and S. J. Savory, “Blind adaptive equalization of polarization-switched QPSK modulation,” Opt. Express 19(9), 8533–8538 (2011).
  16. F. Xiong, “Digital Modulation Techniques,” Artech House Inc, 2006.

2011 (5)

2010 (1)

2009 (2)

1995 (1)

M. Wrigth, “Comments on ‘Aspects of MLS measuring systems,’,” J. Audio Eng. Soc. 43, 48–49 (1995).

Agrell, E.

Andrekson, P. A.

Bayvel, P.

Behrens, C.

Bergano, N. S.

Bosco, G.

Cai, J.-X.

Cai, Y.

Carena, A.

Curri, V.

Davidson, C. R.

Ellis, A. D.

Forghieri, F.

Foursa, D. G.

Johannisson, P.

Karlsson, M.

Lavery, D.

Lucero, A. J.

Mac Suibhne, N.

Magill, P.

Makovejs, S.

Millar, D. S.

Mohs, G.

Nelson, L. E.

Patterson, W. W.

Pilipetskii, A. N.

Poggiolini, P.

Savory, S. J.

Sinkin, O. V.

Sjödin, M.

Thomsen, B. C.

Wrigth, M.

M. Wrigth, “Comments on ‘Aspects of MLS measuring systems,’,” J. Audio Eng. Soc. 43, 48–49 (1995).

Wymeersch, H.

Zhou, X.

J. Audio Eng. Soc. (1)

M. Wrigth, “Comments on ‘Aspects of MLS measuring systems,’,” J. Audio Eng. Soc. 43, 48–49 (1995).

J. Lightwave Technol. (2)

Opt. Express (6)

Other (7)

P. Serena, A. Vannucci, and A. Bononi, “The performance of polarization switched-QPSK (PS-QPSK) in dispersion managed WDM transmission,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper Th.10.E.2.

F. Xiong, “Digital Modulation Techniques,” Artech House Inc, 2006.

M. Salsi, H. Mardoyan, P. Tran, C. Koebele, E. Dutisseuil, G. Charlet, and S. Bigo, “155×100Gbit/s coherent PDM-QPSK transmission over 7,200km,” in Proc. 35th Eur. Conf. Opt. Commun., Sept. 2009, paper PD2.5.

E. Torrengo, R. Cigliutti, G. Bosco, and G. Gavioli, A. Alaimo A. Carena, V. Curri, F. Forghieri, S. Piciaccia, M. Belmonte, A. Brinciotti, A. L. Porta, S. Abrate, and P. Poggiolini, “Transoceanic PM-QPSK Terabit superchannel transmission experiments at Baud-rate subcarrier spacing,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper We.7.C.2.

M. Salsi, C. Koebele, P. Tran, H. Mardoyan, S. Bigo, and G. Charlet, “80×100-Gbit/s transmission over 9,000km using erbium-doped fibre repeaters only,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper We.7.C.3.

H. Bülow, “Polarization QAM (POL-QAM) for coherent detection schemes,” in Proc. Opt. Fiber Commun. Conf., Mar. 2009, paper OWG2.

J. K. Fischer and L. Molle, M, Nölle, D.-D. Groß, and C. Schubert, “Experimental Investigation of 28-GBd Polarization-Switched Quadrature Phase-Shift Keying Signals,“ in Proc. 37th Eur. Conf. Opt. Commun., Sept. 2011, paper Mo.2.B.1.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (5)

Fig. 1
Fig. 1

(a) Experimental setup of 112 Gb/s PS-QPSK and DP-QPSK eight-channel WDM transmitter, circulating transmission loop and coherent receiver. (b) detailed schematic of the transmitter setup, (c) PolSK modulator and Pol-MUX emulator used for the neighboring channels. ECL: external cavity laser, DFF: D-flip-flop, Pol-Ctrl: polarization controller, MZM: Mach-Zehnder modulator, BPF: optical band-pass filter, VOA: variable optical attenuator.

Fig. 2
Fig. 2

(a) Spectrum of 8 × 112 Gb/s PS-QPSK after 50 GHz ILV (red) and after 10000 km transmission (blue), (b) eye diagram of PS-QPSK before (top) and after (bottom) 50 GHz ILV, (c) received back-to-back constellation for 112 Gb/s PS-QPSK, 40 dB OSNR (d) –(f) spectra, eye diagram and constellation for 112 Gb/s PDM-QPSK.

Fig. 3
Fig. 3

(a) back-to back performance for PS-QPSK and PDM-QPSK in a single-channel and WDM scenario: solid lines indicate theoretical limits and curves with symbols are measured values, (b) and (c) Plots of the received phase planes for PS-QPSK and PDM-QPSK, respectively, both for a BER of 10−3.

Fig. 4
Fig. 4

(a) BER vs. fiber launch power per channel for various transmission lengths, blue curves show PS-QPSK, red curves show PDM-QPSK, (b) BER vs. transmission distance (optimized launch power for every distance).

Fig. 5
Fig. 5

BER and OSNR vs. measured channel index (shortest wavelength: 1549.715 nm, longest wavelength: 1552.524 nm), blue circles indicate BER and red triangles denote OSNR. (a) PS-QPSK for + 1 dBm channel launch power after 11000 km, (b) PDM-QPSK for −1 dBm channel launch power after 10000 km transmission.

Metrics