CASPIAN JOURNAL
MANAGEMENT AND HIGH TECHNOLOGIES
Acousto-optic switch of fiber-optic lines used for information-measuring systems
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Read | Davydov Andrey I. Acousto-optic switch of fiber-optic lines used for information-measuring systems // Caspian journal : management and high technologies. — 2012. — №4. — pp. 12-18. |
Davydov Andrey I. - post-graduate student, Ufa State Academy of Economics and Service, 145 Chernyshevsky St., Ufa, Republic of Bashkortostan, 450078, Russian Federation, post@ugaes.ru
The article presents a modern information-measuring system, based on fiber-optic lines, intended to enable the potential of high-speed data transfer. The system demonstrates the urgency of coping with problems related to fiber-optic line channel switching. The study deals with fiber-optic line switching in information-measuring systems facing optical signal control by acoustic-optic devices. The paper notes that the acoustic-optic effect is found as a result of the interaction of optical signals with acoustic disturbances. For their part, plane acoustic waves propagate in the crystal forms of periodic layers due to refractive index changes. These often represent an incident light in the periodic diffraction grating moving at sonic speed. In its propagation, light passing through such a medium would be deflected by the non-homogeneities of the refractive index to the angle, with this depending on the period of the diffraction grating. This would be proportional to the crystal’s sound wave frequency, thus, the refracted optical signal would be switched in the output of the fiber-optic matrix. The acousto-optic switch of the fiber-optic lines, relating to all-optical switches, would have a high capacity of output channels, low losses and high reliability since it contains no moving parts. Finally, the document discusses the bases of acoustic-optic interaction, switch structure, parameters of basic elements and work principles.
Key words: acoustic-optic switch,deflector,transducer,controller,fiber-optic array,fiber,diffraction,Bragg angle,acoustic-optic cell,information-measuring system