title: Holographic polarization-selective module based on a small dove prism coupler for magneto-optical pickup heads.
abstract: A new structure for polarization-selective elements, consisting of two holographic gratings and a Dove prism coupler, is proposed. The absence of a multistage waveguide and the benefits of compact size and lightweight volume are the outstanding features of the new structure. Based on the coupled-wave theory, the analysis and design of the structure are discussed in detail to calculate the required index modulation. Several parameters, such as the recording intensity, the exposure time, and the recording angles for the fabrication of the proposed element, are determined. Under these conditions, the element is fabricated in Dupont photopolymer HRF-150-38 material and with an operating wavelength of 532 nm. A simplified pickup head is constructed to evaluate the performance of the fabricated element.
authors.affiliation: PrismTek Inc., 804 Hakyeonsan Research Center, Kaeshin-Dong, Heungduk-ku, Cheongju 361-763, South Korea.
authors.forename: Chang-Won
authors.initials: CW
authors.lastname: Shin
authors.forename: Viet-Tien
authors.initials: VT
authors.lastname: Vu
authors.forename: Nam
authors.initials: N
authors.lastname: Kim
authors.forename: Jun-Won
authors.initials: JW
authors.lastname: An
authors.forename: Dongwoo
authors.initials: D
authors.lastname: Suh
authors.forename: Yongwoo
authors.initials: Y
authors.lastname: Park
authors.forename: Hojun
authors.initials: H
authors.lastname: Ryu
authors.forename: Mun-Cheol
authors.initials: MC
authors.lastname: Paek
authors.forename: Hyeon-Bong
authors.initials: HB
authors.lastname: Pyo