Second-harmonic generation in periodically poled nonlinear polymer waveguides |
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Authors: | Ju Jung Jin Kim Jongbae Do Jung Yun Kim Min-su Park Seung Koo Park Suntak Lee Myung-Hyun |
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Affiliation: | Wideband Photonics Device Team, Electronics and Telecommunications Research Institute, Daejeon 305-350, Korea. jjju@etri.re.kr |
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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. |
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