title: Second-harmonic generation in periodically poled nonlinear polymer waveguides.
abstract: We demonstrate quasi-phase-matched (QPM) second-harmonic generation (SHG) at the optical communication wavelengths with side-chain polymer waveguides. A ridge waveguide structure is designed to support fundamental mode guiding at both the pump and the second harmonics, leading to a high field overlap integral of the guided modes. The nonlinearity contrast in the +/0 type QPM waveguide is maximized under a QPM poling electrode width of nearly half the coherence length. Using these configurations, we record a normalized SHG efficiency of 2.2% W(-1) cm(-2) in the polymer waveguide.
authors.affiliation: Wideband Photonics Device Team, Electronics and Telecommunications Research Institute, Daejeon 305-350, Korea. jjju@etri.re.kr
authors.forename: Jung Jin
authors.initials: JJ
authors.lastname: Ju
authors.forename: Jongbae
authors.initials: J
authors.lastname: Kim
authors.forename: Jung Yun
authors.initials: JY
authors.lastname: Do
authors.forename: Min-su
authors.initials: MS
authors.lastname: Kim
authors.forename: Seung Koo
authors.initials: SK
authors.lastname: Park
authors.forename: Suntak
authors.initials: S
authors.lastname: Park
authors.forename: Myung-Hyun
authors.initials: MH
authors.lastname: Lee