TECHNOLOGY OF FABRICATION OF SENSITIVE ELEMENT OF THE DIFFERENTIAL FIBER-OPTIC ACCELERATION SENSOR 

Murashkina Tatiana Ivanovna, doctor of technical sciences, professor, sub-department of instrument engineering, director of the STC «Nano technology fiber-optic systems», Penza State University (40 Krasnaya street, Penza, Russia), timurashkina@mail.ru
Motin Andrey Vladimirovich, postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), motin.andrey92@yandex.ru
Chukareva Maria Mikhailovna, postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), marisavochkina@mail.ru
Torgashin Sergey Ivanovich, candidate of technical sciences, head of syb-department of rocket-space and aerospace instrumentation, Penza State University (40 Krasnaya street, Penza, Russia), rkap@pnzgu.ru

681.7.08

10.21685/2307-5538-2018-1-6

Background. To the modern information-measuring technique, in particular to sensors of accelerations (linear and vibration) used in the aerospace and aviation industries, strict requirements on metrological and operational characteristics, manufacturability, massdimensional indicators, the opportunity to work in the most severe operating conditions, for example in conditions of strong electromagnetic fields, and, often, intrinsically-fire-explosion and fire hazard. These criteria fully meet the fiber-optic sensors accelerations of the differential type. In this regard, development of a sensitive element of this type of sensors is important and relevant at the moment.
Materials and methods. When designing a sensing element for differential fiber-optic accelerometer has been used the basic principles of fiber-optic sensors. Applied materials, providing precision optical and mechanical conversion systems, in particular steel 36НХTЮ quartz and optical glass. Applied to a method of manufacturing the elastic element by the method of anodic-cathodic pickling and several ways of connecting the elastic and the optical element in the form of cylindrical lenses.
Results. The results of the development of constructive-technological decisions of a sensitive element in the form of a spring with two cylindrical lenses – the basic element of technical solutions in fiber-optic sensors accelerations of the differential type used in information-measuring equipment.
Conclusions. Developed by the sensitive element of fiber-optic acceleration sensor that implements a differential conversion circuit of the optical signal and designed for use in harsh environments. The technological sequence of manufacture and construction of the sensing element, the results of manufacturing such a sensing element for the working of a model of the acceleration sensor.

fiber-optic acceleration sensor, sensing element, optical modulating element