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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 6 — Feb. 20, 2001
  • pp: 897–905

Optical time-domain reflectometry of bent plastic optical fibers

Tatsuya Sugita  »View Author Affiliations


Applied Optics, Vol. 40, Issue 6, pp. 897-905 (2001)
http://dx.doi.org/10.1364/AO.40.000897


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Abstract

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 proportional to the square of the curvature. The refractive-index variation of the bent step-index POF’s was measured, and the dependence of the peak intensity on the curvature was shown to agree with that predicted by the scattering from the refractive-index perturbation.

© 2001 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2300) Fiber optics and optical communications : Fiber measurements
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements

History
Original Manuscript: October 26, 1999
Revised Manuscript: September 19, 2000
Published: February 20, 2001

Citation
Tatsuya Sugita, "Optical time-domain reflectometry of bent plastic optical fibers," Appl. Opt. 40, 897-905 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-6-897


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References

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