Joint transform correlator for the detection of defects in optical fibers

被引：0
|
作者：
Wei, L
Kim, H
Lee, S
Lee, S
机构：
[1] Inha Univ, Dept Elect Mat & Devices Engn, Inchon 402751, South Korea
[2] Inha Univ, Dept Automat Engn, Inchon 402751, South Korea
[3] Inha Univ, Dept Phys, Inchon 402751, South Korea
来源：
OPTICAL ENGINEERING | 1998年 / 37卷 / 05期
关键词：
joint transform correlator; Fourier transform; joint power spectrum; optical fiber;
D O I：
暂无
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A hybrid optical/digital system for detecting defects in optical fibers is proposed. Since the structure of the fibers is the multilayer coaxial cylinder with step indices, the defects in any layer change the spatial frequency spectrum of the fibers and can be detected by comparison with the spectrum of a desired perfect fiber. A joint transform correlator can carry out the detection by continuously updating the test fiber with the desired reference fiber in its stationary position. We show that by joint transform correlator, fiber defects can be successfully detected. (C) 1998 Society of Photo-Optical instrumentation Engineers. [S0091-3286(98)01305-1].
引用
收藏
页码：1468 / 1474
页数：7
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