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In this paper, a simple measurement system is presented. Taking into account the characteristics of optical fiber materials, in order to measure its young's modulus, the key is to design a device to measure the longitudinal length of the optical fiber when it is subjected to longitudinal tension. Therefore, according to the principle of "stretch method" to measure Young's modulus, the amplification principle of the reading microscope, and making use of CCD video camera and monitors and otherdoi:10.12783/dtcse/smce2017/12397 fatcat:wtwldci33zg2ljax6m6akpkpji