Development and optimization of a miniaturized fiber-optic photoplethysmographic sensor

Aisha Morley; John J. Davenport; Michelle Hickey; Justin P. Phillips

doi:10.1117/1.OE.56.11.117111

30 November 2017 Development and optimization of a miniaturized fiber-optic photoplethysmographic sensor

Aisha Morley, John J. Davenport, Michelle Hickey, Justin P. Phillips

Author Affiliations +

Optical Engineering, Vol. 56, Issue 11, 117111 (November 2017). https://doi.org/10.1117/1.OE.56.11.117111

Abstract

Photoplethysmography (PPG) is a widely used technique for measuring blood oxygen saturation, commonly using an external pulse oximeter applied to a finger, toe, or earlobe. Previous research has demonstrated the utility of direct monitoring of the oxygen saturation of internal organs, using optical fibers to transmit light between the photodiode/light emitting diode and internal site. However, little research into the optimization and standardization of such a probe has yet been carried out. This research establishes the relationship between fiber separation distance and PPG signal, and between fiber core width and PPG signal. An ideal setup is suggested: 1000-μm fibers at a separation distance of 3 to 3.5 mm, which was found to produce signals around 0.35 V in amplitude with a low variation coefficient.

Citation Download Citation

Aisha Morley, John J. Davenport, Michelle Hickey, and Justin P. Phillips "Development and optimization of a miniaturized fiber-optic photoplethysmographic sensor," Optical Engineering 56(11), 117111 (30 November 2017). https://doi.org/10.1117/1.OE.56.11.117111

Received: 4 May 2017; Accepted: 5 October 2017; Published: 30 November 2017

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