Fiber optic oxygen sensor detection system for aerospace applications

Alex A. Kazemi; Edgar A. Mendoza; Lothar U. Kempen; Robert A. Lieberman

doi:10.1117/12.417402

1 March 2001 Fiber optic oxygen sensor detection system for aerospace applications

Alex A. Kazemi, Edgar A. Mendoza, Lothar U. Kempen, Robert A. Lieberman

Proceedings Volume 4204, Fiber Optic Sensor Technology II; (2001) https://doi.org/10.1117/12.417402
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States

Abstract

This paper describes a novel multi-point fiber optic microsensor (optrode) based on dynamic luminescence quenching that is being developed for measuring oxygen leak detection for space applications. The sensor optrodes employ the quenching by oxygen of the fluorescence from a ruthenium complex. These optrodes were fabricated using Ruthenium-based fluorescent indicator immobilized in a porous glass rod placed at the end of multimode fiber. The light from a blue LED is launched into the optrode via a fiber optic bundle and used as the excitation source. The optrode's fluorescent emission intensity in the range of 0% to 10% oxygen is measured as a function of time. The measuring system is based on high reliability and low cost. The system consists of four units: 1) temperature compensated oxygen optrodes combined with a optical setup, 2) multipoint sensor communication fiber optic network cable, 3) digital/analogue optoelectronic signal processing unit with built-in micro controller for control of data acquisition and processing, and 4) a laptop computer for data display and storage. In testing, the sensor exhibited excellent response time and reversibility.

Citation Download Citation

Alex A. Kazemi, Edgar A. Mendoza, Lothar U. Kempen, and Robert A. Lieberman "Fiber optic oxygen sensor detection system for aerospace applications", Proc. SPIE 4204, Fiber Optic Sensor Technology II, (1 March 2001); https://doi.org/10.1117/12.417402

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