Optical Time-Domain Reflectometry of Bent Plastic Optical Fibers
Applied Optics, Vol. 40, Issue 6, pp. 897-905 (2001)
http://dx.doi.org/10.1364/AO.40.000897
Acrobat PDF (306 KB)
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
[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
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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