GRIN Planar Structures for Focusing, Collimation and Beam Size Control

  • C. Gómez-Reino
  • C. Bao
  • M. V. Pérez


Currently the terms GRadient INdex or GRaded INdex (GRIN) are often used to describe an inhomogeneous medium, that is, a medium in which the refractive index varies from point to point within it.1–2In a GRIN medium, the optical rays follow curved trajectories, instead of straight lines as in a homogeneous medium. By an appropriate choice of the refractive index profile, a GRIN medium can have the same effect on light rays as conventional optical components, such as a prism or a lens.


Light Propagation Planar Waveguide Collimate Beam Integrate Optic Refractive Index Profile 
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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • C. Gómez-Reino
    • 1
  • C. Bao
    • 1
  • M. V. Pérez
    • 1
  1. 1.Faculty of Physics, and Optometry and Optics SchoolUniversity of Santiago de CompostelaGaliciaSpain

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