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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 14 — May. 10, 2006
  • pp: 3307–3316

Full vectorial modal analysis of specialty fibers and their Bragg grating characterization

Waleed Mohammed, Xijia Gu, and P. W. E. Smith  »View Author Affiliations

Applied Optics, Vol. 45, Issue 14, pp. 3307-3316 (2006)

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Optical fibers and specialty waveguides are the bases of the majority of today's telecommunication, biomedical, sensing, and light-delivery applications. Modal analysis plays an important role in optimizing the optical performance of these fibers when they are integrated with optical systems. We present a full vectorial modal theoretical analysis of specialty cylindrical symmetric fibers with arbitrary index profiles, using a staircase approximation and scattering matrix approach with no constraints on the refractive index profile. We demonstrate the generality of this method by investigating the modal characteristics of two specialty fibers: graded-index fiber and concentric-shell multicore fiber. The calculated modal effective indices for the graded-index fiber are compared with those calculated by the WKB method, stressing the main differences between the scalar and vectorial approaches. Using the same approach, we calculate the Bragg grating response of a holographic grating written in the guiding regions of a concentric-shell fiber and compared them with experimental measurements.

© 2006 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties

Original Manuscript: October 25, 2005
Revised Manuscript: November 30, 2005
Manuscript Accepted: December 13, 2005

Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics

Waleed Mohammed, Xijia Gu, and P. W. E. Smith, "Full vectorial modal analysis of specialty fibers and their Bragg grating characterization," Appl. Opt. 45, 3307-3316 (2006)

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