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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 8 — Apr. 11, 2011
  • pp: 7839–7846

Comparison of polarization-switched QPSK and polarization-multiplexed QPSK at 30 Gbit/s

Martin Sjödin, Pontus Johannisson, Henk Wymeersch, Peter A. Andrekson, and Magnus Karlsson  »View Author Affiliations


Optics Express, Vol. 19, Issue 8, pp. 7839-7846 (2011)
http://dx.doi.org/10.1364/OE.19.007839


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Abstract

We present the first experimental results for polarization-switched QPSK (PS-QPSK) and make a comparison with polarization-multiplexed QPSK. Our measurements confirm the predicted sensitivity advantage of PS-QPSK. We have also studied the single channel performance after transmission over 300 km and support the results with numerical simulations. It is shown that the two modulation formats have similar nonlinear tolerance and that optical dispersion compensation outperforms compensation with digital signal processing in the single channel case. Finally, we propose a novel transmitter for PS-QPSK based on an IQ modulator and two amplitude modulators driven in a push-pull configuration.

© 2011 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.1660) Fiber optics and optical communications : Coherent communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 17, 2011
Revised Manuscript: March 28, 2011
Manuscript Accepted: March 29, 2011
Published: April 7, 2011

Citation
Martin Sjödin, Pontus Johannisson, Henk Wymeersch, Peter A. Andrekson, and Magnus Karlsson, "Comparison of polarization-switched QPSK and polarization-multiplexed QPSK at 30 Gbit/s," Opt. Express 19, 7839-7846 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-8-7839


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References

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