Fiber misalignment measurement method by the reflected light from fibers

Author

Ide, Atsushi ; Tachikura, Masao ; Nomura, Yoshihiko

Author_Institution

NTT Transmission Syst. Lab., Ibaraki, Japan

Volume

8

Issue

8

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

1243

Lastpage

1249

Abstract

A simple method for detecting misalignment of fiber axes is described. Bidirectional misalignment of the fiber axis is measured through images observed in one direction. The bidirectional components of fiber axis misalignment are measured using images created by reflected light from the fibers. The image observed for each fiber consists of a single bright line, a great advantage when processing images. The characteristics of the intensity distribution of reflected light from fibers determined by computer simulation and experiments are examined. Based on these results, the principle of the method for detecting optical-fiber positions is explained. It is shown that the accuracy of the axis misalignment measurement is defined as a standard deviation of 0.61 μm for a single fiber and 0.86 μm for a fiber ribbon; the accuracy of the measurement may allow further improvement by using an image sensor with higher resolution

Keywords

fibre optics; light reflection; optical information processing; optical testing; optical variables measurement; alignment measurement accuracy; bidirectional fibre axis misalignment measurement; computer simulation; fiber axes; fiber ribbon; fibre misalignment measurement; fibre reflected light images; image sensor; intensity distribution; optical-fiber positions; reflected light; resolution; single bright line; standard deviation; Automation; Computer simulation; Face detection; Measurement standards; Optical detectors; Optical fiber cables; Optical fibers; Position measurement; Splicing; Stimulated emission;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.57847

Filename

57847