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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 15 — Jul. 16, 2012
  • pp: 16358–16365

Optics InfoBase > Optics Express > Volume 20 > Issue 15 > Page 16358

Simultaneous transmission of 20x2 WDM/SCM-QKD and 4 bidirectional classical channels over a PON

J. Mora, W. Amaya, A. Ruiz-Alba, A. Martinez, D. Calvo, V. García Muñoz, and J. Capmany  »View Author Affiliations


Optics Express, Vol. 20, Issue 15, pp. 16358-16365 (2012)
http://dx.doi.org/10.1364/OE.20.016358


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Abstract

We report the transmission of 40 quantum-key channels using WDM/SCM-QKD technology and 4 bidirectional classical channels over a PON. To our knowledge the highest number of quantum key channels simultaneously transmitted that has ever been reported. The quantum signal coexists with classical reference channel which is employed to process the qbits, but it has enough low power to avoid Raman crosstalk and achieving a high number of WDM-QKD channels. The experimental results allow us to determine the minimum rejection ratio required by the filtering devices employed to select each quantum channel and maximize the quantum key rate. These results open the path towards high-count QKD channel transmission over optical fiber infrastructures.

© 2012 OSA

OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(270.5568) Quantum optics : Quantum cryptography

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 1, 2012
Revised Manuscript: June 13, 2012
Manuscript Accepted: June 25, 2012
Published: July 3, 2012

Citation
J. Mora, W. Amaya, A. Ruiz-Alba, A. Martinez, D. Calvo, V. García Muñoz, and J. Capmany, "Simultaneous transmission of 20x2 WDM/SCM-QKD and 4 bidirectional classical channels over a PON," Opt. Express 20, 16358-16365 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-15-16358


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References

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