" "  N 5, 2007


Integrated-optical low-loss PbO2 diffusion waveguide sensitive chemical sensor

A. A. Egorov, M.A. Egorov, R.B. Smoliakov, T.K. Chekhlova, A.G. Timakin
Peoples Friendship University of Russia, Moscow, Russia

Received May 4, 2007


We created an innovated opto-electronic system where integrated-optical sensor, photodetectors, microelectronic comparison scheme, analog-to-digital converter and computer are integrated with the aim to achieve a high sensitivity. The test of this system demonstrates that this sensor can detect the ammonia with the concentration 4 ppm for a signal-to-noise-ratio about 15.