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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 776–786

Near-zero anomalous dispersion Ge11.5As24Se64.5 glass nanowires for correlated photon pair generation: design and analysis

X. Gai, R. P. Wang, C. Xiong, M. J. Steel, B. J. Eggleton, and B. Luther-Davies  »View Author Affiliations


Optics Express, Vol. 20, Issue 2, pp. 776-786 (2012)
http://dx.doi.org/10.1364/OE.20.000776


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Abstract

We show that highly nonlinear chalcogenide glass nanowire waveguides with near-zero anomalous dispersion should be capable of generating correlated photon-pairs by spontaneous four-wave mixing at frequencies detuned by over 17 THz from the pump where Raman noise is absent. In this region we predict a photon pair correlation of >100, a figure of merit >10 and brightness of ~8×108 pairs/s over a bandwidth of >15 THz in nanowires with group velocity dispersion of <5 ps∙km−1nm−1. We present designs for double-clad Ge11.5As24Se64.5 glass nanowires with realistic tolerance to fabrication errors that achieve near-zero anomalous dispersion at a 1420 nm pump wavelength. This structure has a fabrication tolerance of 80–170 nm in the waveguide width and utilizes a SiO2/Al2O3 layer deposited by atomic layer deposition to compensate the fabrication errors in the film thickness.

© 2012 OSA

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(270.4180) Quantum optics : Multiphoton processes
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 19, 2011
Revised Manuscript: November 21, 2011
Manuscript Accepted: November 23, 2011
Published: January 3, 2012

Citation
X. Gai, R. P. Wang, C. Xiong, M. J. Steel, B. J. Eggleton, and B. Luther-Davies, "Near-zero anomalous dispersion Ge11.5As24Se64.5 glass nanowires for correlated photon pair generation: design and analysis," Opt. Express 20, 776-786 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-2-776


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