Integrated-optical chemical sensor with analog-digital transformation of a
A. A. Egorov1, M. A. Egorov2, T. K. Chekhlova2,
A. G. Timakin2
1 A.M. Prokhorov General
Physics Institute, Russian Academy of Sciences
2 Peoples' Friendship
University of Russia
Received January 19, 2011
Abstract. A high-speed
integrated-optical chemical sensor, being a part of a device with
analog-digital transformation of a signal, is elaborated and investigated experimentally.
As it basis an integrated-optical waveguide of a diffusion type with a low attenuation is used. The advantage of
the schemes of a measurement is marked, in which the analog signal from the integrated-optical
sensor will be transformed to a digital kind with the purpose of consequent
processing of digitized data of measurements on the computer. It is
established, that at the expense of computer registration of digitized measuring
data, the integrated-optical chemical sensor has rather fast time of the
response: no more than 0.2 seconds. The perspectives of use of integrated-optical
sensor of this type are discussed.
waveguide, chemical sensor, laser radiation, electronic comparison circuit,
operational amplifier, analog-to-digital conversion, fast Fourier
transformation, data processing.