title: Gradient refractive-index optical rod prepared from methacrylate derivatives.
abstract: A new method of preparing gradient refractive-index (GRIN) rods by using the swollen-gel polymerization technique is discussed. The polymerization of methyl methacrylate with benzyl methacrylate (BzMA) was carried out in a poly(methyl methacrylate) tube. The diffusion of the higher-refractive-index monomer BzMA in the swollen gel led to the formation of a GRIN distribution. After complete polymerization, a good symmetric and bubble-free GRIN rod was fabricated. An image with no distortion can be observed through the GRIN rods prepared by swollen-gel polymerization.
authors.affiliation: Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan 70101.
authors.forename: J H
authors.initials: JH
authors.lastname: Liu
authors.forename: H T
authors.initials: HT
authors.lastname: Liu