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1 results

  • 7 - Nonuniform GRIN Media

  • Govind P. Agrawal, University of Rochester, New York
  • Book:
    Physics and Engineering of Graded-Index Media
    Published online:
    27 July 2023
    Print publication:
    10 August 2023, pp 214-240

  • Summary

    The focus of this chapter is on longitudinal variations of the refractive index and how such variations affect the propagation of light inside a GRIN medium. Section 7.1 describes the ray-optics and wave-optics techniques that can be used for this purpose. Section 7.2 focuses on tapered GRIN fibers and describes the impact of tapering on the periodic self-imaging for a few different tapering profiles. The analogy between a GRIN medium and a harmonic oscillator is exploited in Section 7.3 by employing several quantum-physics techniques for solving the GRIN problem. Section 7.4 is devoted to the case of periodic variations in the refractive index that are induced by changing the core’s radius of a GRIN fiber along its length in a periodic fashion.