Single-Mode Propagation and Highly Efficient Second Harmonic Generation in Periodically Poled MgO-Doped LiNbO3 on Insulator Rib Waveguide
ZHOU Yu-Jie, FENG Li-Qun, SUN Jun-Qiang**
Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
Abstract ：Theoretical studies on mode propagation and second harmonic generation in periodically poled MgO-doped LiNbO3 on an insulator (PPLNOI) rib waveguide are presented. With a special design, the waveguide can simultaneously support the single-mode propagation of both a pump wave (1550 nm) and a second harmonic wave (775 nm). As a result of the strong confinement and intensive nonlinear effect in the PPLNOI rib waveguide, the calculated results indicate that a second-harmonic generation conversion efficiency of 400%W?1 ?cm?2 can be achieved at a wavelength of 1550 nm, almost 2.6 times higher than the widely applied reverse proton-exchanged waveguide (150%W?1 ?cm?2 ).
收稿日期: 2012-03-12
出版日期: 2012-07-31
:
42.79.Nv
(Optical frequency converters)
42.70.Mp
(Nonlinear optical crystals)
42.82.Et
(Waveguides, couplers, and arrays)
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2012, Vol. 29 
