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Frontiers of Optoelectronics

Front Optoelec Chin    2011, Vol. 4 Issue (3) : 343-347     DOI: 10.1007/s12200-011-0133-1
Mode overlap analyses of propagated waves in direct bonded PPMgLN ridge waveguide
Yujie ZHOU(), Liqun FENG, Qian HU, Junqiang SUN
Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Direct bonded periodically poled MgO doped lithium niobate (PPMgLN) ridge waveguide is a new wavelength converter with high conversion efficiency. The optical field distribution of the ridge waveguide is simulated by employing finite-difference method (FDM), the mode overlap of propagated waves in the ridge waveguide is calculated and the relationship between the overlap coefficient and the waveguide structure sizes is also investigated. The overlap coefficient to difference frequency generation (DFG) process conversion efficiency calculation is firstly introduced.

Keywords lithium niobate      nonlinear optics      waveguide device     
Corresponding Authors: ZHOU Yujie,   
Issue Date: 05 September 2011
 Cite this article:   
Junqiang SUN,Liqun FENG,Qian HU, et al. Mode overlap analyses of propagated waves in direct bonded PPMgLN ridge waveguide[J]. Front Optoelec Chin, 2011, 4(3): 343-347.
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Junqiang SUN
Liqun FENG
Qian HU
Yujie ZHOU
Fig.1  Ridge waveguide cross-section
Fig.2  Optical intensity distribution of TM mode for PPMgLN ridge waveguide. (a) Fundamental wave; (b) second harmonic wave
Fig.3  Normalized optical intensity along width (a) and height (b) direction
Fig.4  Power overlap coefficient curve along with core width
Fig.5  Power overlap coefficient curve along with core height
Fig.6  Power overlap coefficient plots with ridge width and ridge height
Fig.7  PPMgLN ridge waveguide
Fig.8  DFG conversion efficiency for a 50mm-long waveguide
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