Share Email Print

Proceedings Paper

An Accurate, Low-Cost, Easily-Manufacturable Oxygen Sensor
Author(s): Henry K. Hui; Skip Divers; Terry Lumsden; Tom Wallner; Steve Weir
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

A low cost, disposable fiber-optic based sensor, capable of in vitro and in vivo monitoring of oxygen partial pres-sure has been developed as part of a continuous blood monitoring system. The uniqueness of the sensor is its easy manufacturability. A specific length of the polymeric cladding at the fiber tip is removed and the glass core is recladded by a dipping process whereby a fluorescent dye, immobilized in a vulcanizable, gas-permeable polymer is applied. By adjusting the refractive index of the recladding material, highly efficient coupling of the fluorescent light is realized. The sensor is then coated with a reflective material to capture the fluorescent light. Signal to blank ration of > 300 is consistently achievable. Sensors fabricated in this manner are found to be durable, exhibit low susceptibilities to mechanical perturbation, and demonstrate superior response times.

Paper Details

Date Published: 13 February 1990
PDF: 6 pages
Proc. SPIE 1172, Chemical, Biochemical, and Environmental Fiber Sensors, (13 February 1990);
Show Author Affiliations
Henry K. Hui, FOxS LABS (United States)
Skip Divers, FOxS LABS (United States)
Terry Lumsden, FOxS LABS (United States)
Tom Wallner, FOxS LABS (United States)
Steve Weir, FOxS LABS (United States)

Published in SPIE Proceedings Vol. 1172:
Chemical, Biochemical, and Environmental Fiber Sensors
Robert A. Lieberman; Marek T. Wlodarczyk, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?