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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 17 — Sep. 1, 2010
  • pp: 2867–2869

110 km transmission of 160 Gbit/s RZ-DQPSK signals by midspan polarization-insensitive optical phase conjugation in a Ti:PPLN waveguide

Hao Hu, Rahman Nouroozi, Reinhold Ludwig, Carsten Schmidt-Langhorst, Hubertus Suche, Wolfgang Sohler, and Colja Schubert  »View Author Affiliations


Optics Letters, Vol. 35, Issue 17, pp. 2867-2869 (2010)
http://dx.doi.org/10.1364/OL.35.002867


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Abstract

We demonstrate 160 Gb i t / s return-to-zero (RZ) differential quarternary phase-shift keying (DQPSK) signal transmission over a 110 km single-mode fiber by taking advantage of mid-span optical phase conjugation (OPC). The technique is based on nonlinear wavelength conversion by cascaded second harmonic and difference frequency generation in a Ti:PPLN waveguide. Error-free operation with a negligible optical signal-to-noise ratio penalty for the signal after the OPC transmission without and with polarization scrambling was achieved. The results also show the polarization insensitivity of the OPC system using a polarization diversity scheme.

© 2010 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(070.5040) Fourier optics and signal processing : Phase conjugation
(230.4320) Optical devices : Nonlinear optical devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 13, 2010
Revised Manuscript: July 14, 2010
Manuscript Accepted: July 18, 2010
Published: August 19, 2010

Citation
Hao Hu, Rahman Nouroozi, Reinhold Ludwig, Carsten Schmidt-Langhorst, Hubertus Suche, Wolfgang Sohler, and Colja Schubert, "110 km transmission of 160 Gbit/s RZ-DQPSK signals by midspan polarization-insensitive optical phase conjugation in a Ti:PPLN waveguide," Opt. Lett. 35, 2867-2869 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-17-2867


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References

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