SU1357779A1 - Method of determining load of light conductor specimens - Google Patents

Abstract

The invention relates to a testing technique, in particular to mechanical testing of optical fiber light guides. The aim of the invention 4-5 is to improve the accuracy by creating a more uniform distribution of the stresses along the optical signal path. Sample 6 of the optical fiber, passed through the guide rollers 3 and the bending pairs of rollers-4, located in two mutually perpendicular planes, is loaded with tensile, tension tension mechanism 7. Cyclic bending loads create reciprocating movement of the slide blocks 5 and register in the sample 6 of the fiber device 8, the attenuation of the optical signal from the source 1 of optical signals, 1 Il.

Description

The invention relates to a test instrument, namely to mechanical testing of fiber optic light guides.

The purpose of the invention is to increase accuracy by creating a more uniform distribution of stresses along the path of the optical signal.

The drawing shows a device that implements the method.

The device contains an optical signal source 1, a force meter 2, guide rollers 3, bending pairs of rollers 4 located in two mutually perpendicular planes, sliders 5, the test fiber sample is indicated by the position 6, the tension mechanism 7 and the recording device 8.

The device works as follows.

Sample 6 is passed through guiding rollers 3 and bending pairs of rollers 4 and is fixed in force gauge 2 and tensioning mechanism 7. One end of sample 6 is also connected to optical signal source 1 and the other with recording device 8. Then, the source 1 of the optical signals and the recording device 8 are turned on, and the tension mechanism 7 creates a tensile load in the sample 6 of the light guide. Then sliders 5, which make reciprocating movements, bend, sample 6 of the light guide on the first pair of rollers 4 in the plane of the drawing, and on the second pair of rollers 4 - in a plane perpendicular to the plane of the drawing. In both

Editor V.Danko

Compiled by V. Chernov

Tehred L. Serdyukova Proofreader M. Maksimishinets

Order 5989/41 Circulation 776 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Cases of bending are performed with equal loads of different signs. In the registering device 8, the optical signal is converted into an electrical signal and amplified by the latter, and the amplifier of the registering device 8 is calibrated to the attenuation values (dB). When the fiber in sample 6 reaches the permissible specified value of the attenuation value during the test, the actuating element of the recording device 8, connected to its amplifier, is triggered, turning off the power supply to the installation.

Claims (1)

Invention Formula A method for determining the allowable load of optical fiber samples, which consists in applying a tensile load to a sample and equal two cyclical bending loads of different signs in one plane to its two points and measuring the attenuation of an optical signal in a sample judged by the allowable load, characterized in that, in order to increase accuracy by creating a more uniform distribution of stresses along the path of the optical signal, to two sample points located outside the segment connecting the first two At one point, bending loads are simultaneously applied, similar to the loads applied to the first two points, in a plane perpendicular to the plane of application of the loads at these points.