title: Heat scan: a simple technique to study gratings in fibers.
abstract: A simple and powerful technique to characterize gratings in fibers is described. It is based on scanning a small heating element along the fiber so as to disturb the phase relationship of the waves in a controlled way.
authors.forename: W
authors.initials: W
authors.lastname: Margulis
authors.forename: I C
authors.initials: IC
authors.lastname: Carvalho
authors.forename: P M
authors.initials: PM
authors.lastname: Gouvêa
authors.forename: B
authors.initials: B
authors.lastname: Lesche