
Proceedings Paper
Signal-to-noise ratio performance for detection systems of quantum dot multiplexed optical encodingFormat | Member Price | Non-Member Price |
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Paper Abstract
The wavelength and intensity of the spectral emission of a group of quantum dots can be altered by varying the size of
the quantum dots (wavelength) and the number of the quantum dots (intensity). In this way, information and be encoded
into the spectral characteristics of the group of quantum dots emission. This approach has been proposed for the
application of tagging thousands of biomolecules as well as replacing barcodes as a means to identify objects. The
potential in this system rests in the ability to achieve a high information density. In this paper we model and measure the
noise in the readout system that will contribute to the decrease of the information density. We also propose an alternate
optical detector as a possibly simpler and cheaper design. Our results demonstrate that the signal-to-noise ratio for both
the CCD and photodiode detectors has a linear relationship with time. To achieve comparable SNR, approximately
30dB, in both detectors we note that the CCD-based spectrometer requires integration times on the order of hundreds of
milliseconds while the photodiode only requires tens of microseconds.
Paper Details
Date Published: 22 September 2010
PDF: 10 pages
Proc. SPIE 7750, Photonics North 2010, 775023 (22 September 2010); doi: 10.1117/12.873128
Published in SPIE Proceedings Vol. 7750:
Photonics North 2010
Henry P. Schriemer; Rafael N. Kleiman, Editor(s)
PDF: 10 pages
Proc. SPIE 7750, Photonics North 2010, 775023 (22 September 2010); doi: 10.1117/12.873128
Show Author Affiliations
G. G. Messier, Univ. of Calgary (Canada)
Published in SPIE Proceedings Vol. 7750:
Photonics North 2010
Henry P. Schriemer; Rafael N. Kleiman, Editor(s)
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