Analysis of optical transmission energy loss for micro optical-electro mechanical fuze safety and arming system
by Zhongwang Tian; Shiteng Li; Xu Zhao; Shixi Guo
International Journal of Nanomanufacturing (IJNM), Vol. 18, No. 3/4, 2023

Abstract: The design basis of optical path control of micro optical-electro mechanical fuze safety and arming system is insufficient. Based on working principle of the S&A, the basic theory of laser transmission in optical fibre was analysed, and the simulation model and experiment system of dual fibre alignment were established, which by the laser energy transfer characteristics of the S&A were studied. The results showed that radial deviation and angle deviation were main factors causing the loss of laser energy transmission during fibre coupling, and the radial deviation larger than 25 μm or the angle deviation larger than 2.1° should be avoided. The energy transmission properties would not be affected by radial deviation and angle deviation when the axial clearance was less than 100 μm. And the energy transmission efficiency would be significantly reduced with the influence of multiple factors such as axial, radial and angular deviation, which among the angle deviation was main factor. In the process of optical path designing for S&A system, ensuring the angle alignment of fibres is most important, and the angle deviation larger than 1° should be avoided when the radial offset is superimposed.

Online publication date: Wed, 07-Feb-2024

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