title: Filter characteristics of a chirped volume holographic grating.
abstract: We compare and analyze the filter properties of transmission-type volume holographic gratings, especially the dispersion characteristics for uniform and chirped gratings. It is theoretically and experimentally shown that the dispersion characteristics can be controlled by introducing one-dimensional chirping to the volume grating in a photorefractive crystal. The filter response including output power and dispersion comes from a combined effect of the spatial spectra of the grating structure, input beam, and output-coupling fiber mode. Filter responses can be designed by controlling these parameters for optical communication applications.
authors.affiliation: National Research Laboratory of Holography Technologies, School of Electrical Engineering, Seoul National University, Kwanak-Gu Shinlim-Dong, Seoul 151-744, Korea.
authors.forename: Seunghoon
authors.initials: S
authors.lastname: Han
authors.forename: Bong-Ahn
authors.initials: BA
authors.lastname: Yu
authors.forename: Seunghwan
authors.initials: S
authors.lastname: Chung
authors.forename: Hwi
authors.initials: H
authors.lastname: Kim
authors.forename: Jungwook
authors.initials: J
authors.lastname: Paek
authors.forename: Byoungho
authors.initials: B
authors.lastname: Lee