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

Authors

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

1997: Proceedings of the 15th National Physics Congress of the Samahang Pisika ng Pilipinas

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.