FIELD: measuring equipment.
SUBSTANCE: invention relates to measuring equipment, using optical fiber, namely to fiber-optic security detectors. A linear part of a detector is a branched optical circuit based on splitters and a fiber-optic cable, which, by means of connecting couplings and a transport cable, connect a transceiver and sensitive elements of the detector, containing closed and/or open loops forming reflection signals, in which the same segments of optical fiber of the cable are sensitive elements of interferometers, in which a phase shift of a probing pulse is created in accordance with exerted physical impact, same for both loops. For laying the cable, a mechanized cable layer is used with a channel of input of flexible linear products and V-shaped plough made with the possibility of fixation of an unwinding device on it for installation of a coil with a fiber-optic cable on it for mechanized laying in the ground. Water is supplied to the channel of input of cables during laying the cable, plough is lifted upon completion of laying, releasing the cable, and subsequent ramming with the cable layer is performed using the weight of the cable layer.
EFFECT: acceleration of a mounting process, increase in sensitivity, and provision of uniformity of sensitivity.
8 cl, 12 dwg
