Noise-aided detection of subthreshold transmittances by a one-bit AD converter

Authors

  • Almar Palonpon National Institute of Physics, University of the Philippines Diliman
  • Rex Absin National Institute of Physics, University of the Philippines Diliman
  • Jose Omar Amistoso National Institute of Physics, University of the Philippines Diliman
  • Wilson Garcia National Institute of Physics, University of the Philippines Diliman
  • John Holdsworth Department of Physics, Ateneo de Manila University
  • Caesar Saloma National Institute of Physics, University of the Philippines Diliman

Abstract

Noise dithering is applied to detect weak transmittances which have peak-to-peak amplitudes APP that are below the detection threshold of a one-bit analog-to-digital converter (ADC). Weak transmittances are obtained when the sample is highly-absorbing or when the transmittance undergoes multiple scattering before reaching the photodetector.
This paper reports that dithering can be used to detect subthreshold transmittance signals by a one-bit AD converter. We have shown experimentally the nonlinear dependence of signal-to-noise ratio SNR with the strength of the added noise.

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Article ID

SPP-1997-IC-09

Section

Instrumentation and Computational Physics

Published

1997-10-27

How to Cite

[1]
A Palonpon, R Absin, JO Amistoso, W Garcia, J Holdsworth, and C Saloma, Noise-aided detection of subthreshold transmittances by a one-bit AD converter, Proceedings of the Samahang Pisika ng Pilipinas 15, SPP-1997-IC-09 (1997). URL: https://proceedings.spp-online.org/article/view/SPP-1997-IC-09.