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Second-harmonic generation in periodically poled nonlinear polymer waveguides. 2004
Jung Jin Ju, and
Jongbae Kim, and
Jung Yun Do, and
Min-su Kim, and
Seung Koo Park, and
Suntak Park, and
Myung-Hyun Lee
Wideband Photonics Device Team, Electronics and Telecommunications Research Institute, Daejeon 305-350, Korea. jjju@etri.re.kr
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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