Optical time-domain reflectometry of bent plastic optical fibers.

  title={Optical time-domain reflectometry of bent plastic optical fibers.},
  author={Tatsuya Sugita},
  journal={Applied optics},
  volume={40 6},
Optical time-domain reflectometry (OTDR) signals of step-index plastic optical fibers (POF's) and graded-index POF's were measured with a laser diode and an avalanche photodiode. When bent step-index and graded-index POF's were used, the OTDR signal behavior differed. The OTDR signal of the bent graded-index POF's had a step that corresponds to a curvature loss, but the step-index POF's had a spike signal at a bend, which indicated the occurrence of backscattering. The peak intensity was… CONTINUE READING
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