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The article is devoted to the usage of optical switches in ship's automated systems to increase the noise immunity of transmitted information.  Ship’s sizes enlargement leads to the lengthening of communication lines. This causes the increasement of noises and electromagnetic interference to the signals in cable lines. Traditional methods of interference protection are becoming ineffective. Therefore, fiber-optic communication lines (FOCL) are used onboard the ships, where information is distributed in the form of modulated light pulses. Theoretically it makes possible to eliminate the interference at all. Also it increases the noise immunity of transmitted information in the main communication lines of ship’s systems. However, other sections of ship communications remain wired and are still subjected to interference. The usage of FOCL in all sections of ship communication lines is still impossible due to the high cost of optoelectronic switching equipment, where the principle of double conversion is used.

Application of Optical Switches in ship’s data transfer systems