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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 45, Iss. 26 — Sep. 10, 2006
  • pp: 6675–6681

Influence of bending on power distribution in step-index plastic optical fibers and the calculation of bending loss

M. S. Kovačević and D. Nikezić  »View Author Affiliations


Applied Optics, Vol. 45, Issue 26, pp. 6675-6681 (2006)
http://dx.doi.org/10.1364/AO.45.006675


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Abstract

A means of calculating optical power distribution in bent multimode optical fibers is proposed. It employs the power-flow equation approximated by the Fokker–Planck equation that is solved by the explicit finite-difference method. Conceptually important steps of this procedure include (i) dividing the full length of the bent optical fiber into a finite number of short, straight segments; (ii) solving the power equation for each segment sequentially to find its output distribution; and (iii) expressing that output distribution in rotated coordinates of the subsequent segment along the curved fiber to determine the input distribution for that subsequent segment and thus enable the calculation of the power flow and output distribution for it. The segment length and bend-induced perturbation of output angles are determined by geometric optics. The resulting power distributions are given at different cross sections along the curved fiber axis. They vary with the radius of fiber curvature and launch conditions. Results are compared to those for straight fiber. Bending loss is calculated as well.

© 2006 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties

History
Original Manuscript: January 12, 2006
Revised Manuscript: March 31, 2006
Manuscript Accepted: April 6, 2006

Citation
M. S. Kovačević and D. Nikezić, "Influence of bending on power distribution in step-index plastic optical fibers and the calculation of bending loss," Appl. Opt. 45, 6675-6681 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-26-6675


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