30 November 2017 Development and optimization of a miniaturized fiber-optic photoplethysmographic sensor
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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 - μ m 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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Aisha Morley, Aisha Morley, John J. Davenport, John J. Davenport, Michelle Hickey, Michelle Hickey, Justin P. Phillips, 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 . Submission: Received: 4 May 2017; Accepted: 5 October 2017
Received: 4 May 2017; Accepted: 5 October 2017; Published: 30 November 2017
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