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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 5 — Feb. 27, 2012
  • pp: 5762–5774

Data detection algorithms for multiplexed quantum dot encoding

Kelly C. Goss, Geoff G. Messier, and Mike E. Potter  »View Author Affiliations


Optics Express, Vol. 20, Issue 5, pp. 5762-5774 (2012)
http://dx.doi.org/10.1364/OE.20.005762


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Abstract

A group of quantum dots can be designed to have a unique spectral emission by varying the size of the quantum dots (wavelength) and number of quantum dots (intensity). This technique has been previously proposed for biological tags and object identification. The potential of this system lies in the ability to have a large number of distinguishable wavelengths and intensity levels. This paper presents a communications system model for MxQDs including the interference between neighbouring QD colours and detector noise. An analytical model of the signal-to-noise ratio of a Charge-Coupled Device (CCD) spectrometer is presented and confirmed with experimental results. We then apply a communications system perspective and propose data detection algorithms that increase the readability of the quantum dots tags. It is demonstrated that multiplexed quantum dot barcodes can be read with 99.7% accuracy using the proposed data detection algorithms in a system with 6 colours and 6 intensity values resulting in 46,655 unique spectral codes.

© 2012 OSA

OCIS Codes
(040.1520) Detectors : CCD, charge-coupled device
(070.4790) Fourier optics and signal processing : Spectrum analysis
(160.2540) Materials : Fluorescent and luminescent materials

ToC Category:
Detectors

History
Original Manuscript: September 23, 2011
Revised Manuscript: February 8, 2012
Manuscript Accepted: February 16, 2012
Published: February 24, 2012

Virtual Issues
Vol. 7, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Kelly C. Goss, Geoff G. Messier, and Mike E. Potter, "Data detection algorithms for multiplexed quantum dot encoding," Opt. Express 20, 5762-5774 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-5-5762


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