title: GRIN '92: Gradient-index optical systems.
abstract: This feature of Applied Optics publishes papers related to the theme of the GRIN '92 Topical Meeting that was held in Santiago de Compostela, Spain, 4-6 October 1992. This introduction gives a brief explanation of gradient-index components and defines the scope of the feature.
authors.forename: S I
authors.initials: SI
authors.lastname: Najafi
authors.forename: C
authors.initials: C
authors.lastname: Gomez-Reino
authors.forename: Y
authors.initials: Y
authors.lastname: Fujii