1 May 1998 Joint transform correlator for the detection of defects in optical fibers
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Optical Engineering, 37(5), (1998). doi:10.1117/1.601662
Abstract
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.
Wei Liu, Hakil K. Kim, Sukmock Lee, Seung-Gol Lee, "Joint transform correlator for the detection of defects in optical fibers," Optical Engineering 37(5), (1 May 1998). http://dx.doi.org/10.1117/1.601662
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KEYWORDS
Optical fibers

Optical correlators

Joint transforms

Defect detection

Fourier transforms

Charge-coupled devices

Microscopes

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