title: Ray-tracing method for isotropic inhomogeneous refractive-index media from arbitrary discrete input.
abstract: We have developed a ray-tracing simulation procedure for optically isotropic gradient refractive-index media. The procedure can take discrete points of arbitrary distribution for the definition of refractive-index distributions and lens surfaces. It is useful for simulating ray trajectories in real lens systems. The procedure is applied to a ray-tracing simulation of the Luneburg lens and a radial gradient optical fiber. The simulation results are compared with the analytical solutions, and it is shown that they are in precise agreement.
authors.affiliation: University of Aizu, Aizu-Wakamatsu, Japan. yh.nsdt@gmail.com
authors.forename: Yohei
authors.initials: Y
authors.lastname: Nishidate
authors.forename: Takashi
authors.initials: T
authors.lastname: Nagata
authors.forename: Shin-ya
authors.initials: SY
authors.lastname: Morita
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Yamagata