How Wearable Optical Sensors Measure Heart Rate and SpO₂
Why wearables use green light for pulse tracking and red and infrared light for oxygen-saturation estimates—and what the photodiode actually measures.
Senior Electronics R&D & Product Engineer | Hardware Design | Sensor Systems | Optoelectronics | EMC/EMI
Explore my experience — select an area below.
With over 15 years of Electronics R&D expertise, I engineer high-reliability hardware architectures specializing in optoelectronic sensor design, high-speed PCB stackups, EMI/EMC noise suppression, and embedded signal processing.
Open to thoughtful technical collaborations
I welcome conversations around challenging hardware, sensing and EMC problems where practical engineering can create measurable value.
1–30 MHz · 1.3 kW · solid-state SP2T · open engineering project
Technical articles in optoelectronics and EMC
Why wearables use green light for pulse tracking and red and infrared light for oxygen-saturation estimates—and what the photodiode actually measures.
How near-infrared light can help estimate fruit quality without cutting the fruit open—and why wavelength selection, calibration and signal quality matter in the field.
Why many small conductive cells can preserve airflow while improving electromagnetic shielding performance.