Abstract

Optical time domain reflectometry (OTDR) measurements are performed to characterize the minimum reflection signature from poly(methyl methacrylate) plastic-fiber splices. The dominant splice reflection sources that are due to inexact index matching and fiber core misalignment are eliminated. A clearly detectable intrinsic OTDR reflection signature is observed with all tested fibers. The measured reflectivities vary from −53 to −27 dB. The characteristics of this signature are mapped out versus experimental variables such as fiber-surface roughness, fiber-surface preparation technique, index-matching-fluid refractive index, and wavelength.

© 1993 Optical Society of America

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