Title :
A 27μW subcutaneous wireless biosensing platform with optical power and data transfer
Author :
Sankaragomathi, K. ; Perez, Lina ; Mirjalili, Ramin ; Parviz, Babak ; Otis, Brian
Author_Institution :
Univ. of Washington, Seattle, WA, USA
Abstract :
We present a batteryless, 27uW barely subcutaneous sensing platform using optical power and data links. We demonstrate an 8.1 mm × 3.2 mm implantable tag powered by an 850nm infrared source through the skin barrier. Measurements using pig skin indicate that optical power transfer through skin achieves a 4.9% efficiency, which is higher than mm scale inductive power links. As a proof-of-concept demo, we sense and transmit temperature to an external body worn reader using a fully optical power and data link.
Keywords :
biosensors; infrared sources; optical links; wireless sensor networks; body worn reader; data links; data transfer; efficiency 4.9 percent; infrared source; optical power transfer; power 27 muW; skin barrier; subcutaneous wireless biosensing platform; Biomedical optical imaging; Implants; Optical fiber communication; Optical receivers; Optical sensors; Optical transmitters; Optical power transfer; optical data transfer; sub-cutaneous implant;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2014.6946089
