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A PROTECTED FIBER-OPTIC SYSTEM FOR TRANSMISSION OF CONFIDENTIAL DATA FOR MULTILOOP DISTRIBUTED COMPUTER-AIDED SYSTEMS WITH DISCRIMINATION OF THE USER ACCESS RIGHTS

V. V. Shubin
VANT. Ser.: Mat. Mod. Fiz. Proc 2015. Вып.4. С. 71-80.

The paper describes a protected fiber-optic system for confidential data transmission on the basis of data protection controllers FOBOS with the use of WDM for communication and supervisory channels. It is demonstrated that the coarse wave division multiplexing (CWDM) technology allows creating a multiloop (up to 10 loops) distributed computer-aided system of an enterprise with protection against leakage of information during the transmission of data via an optical channel outside the supervised zone. The transmission at a distance of 20-30 km with the transmission rate 10,31 Gbit/s and at a distance of 37,5 km with the transmission rate 1,25 Gbit/s is provided. The control system’s sensitivity with the wavelength 1610 nm improves from 0,03 dB to 0,004-0,013 dB within the range of wavelengths 1270-1450 nm. The protected fiber-optic transmission system provides the point-to-point communication and allows constructing distributed multiloop computer-aided systems of any topology using a minimum number of optic fibers.

Keywords: protected fiber-optic system for confidential data transmission, data protection controller, different access rights.








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