An Accurate, Low-Cost, Easily-Manufacturable Oxygen Sensor

Henry K. Hui; Skip Divers; Terry Lumsden; Tom Wallner; Steve Weir

doi:10.1117/12.963193

13 February 1990 An Accurate, Low-Cost, Easily-Manufacturable Oxygen Sensor

Henry K. Hui, Skip Divers, Terry Lumsden, Tom Wallner, Steve Weir

Proceedings Volume 1172, Chemical, Biochemical, and Environmental Fiber Sensors; (1990) https://doi.org/10.1117/12.963193
Event: OE/FIBERS '89, 1989, Boston, United States

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.

Citation Download Citation

Henry K. Hui, Skip Divers, Terry Lumsden, Tom Wallner, and Steve Weir "An Accurate, Low-Cost, Easily-Manufacturable Oxygen Sensor", Proc. SPIE 1172, Chemical, Biochemical, and Environmental Fiber Sensors, (13 February 1990); https://doi.org/10.1117/12.963193

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