FIELD: measuring technology.
SUBSTANCE: invention relates to measuring technology, namely to fiber-optic security detectors. The method for signaling using a security fiber-optic detector with a linear part with combined interferometers consists in placing sensitive elements of the linear part, which is a branched optical circuit, which is placed on the elements of the fence by means of splitters, couplings and a fiber-optic cable; a laser pulse is formed from the transceiver to the linear part and return pulses, which are reflection signals, are received to the transceiver along the same path, in the opposite direction, the linear part contains an optical circuit of combined interferometers containing closed loops, one closed loop interferometer Mach-Zehnder, another closed loop Sagnac interferometer.
EFFECT: improving the accuracy of determining the location of impact on the sensitive element; ensuring uniform sensitivity; increased reliability; simplification of installation.
9 cl, 12 dwg
