Mode overlap analyses of propagated waves in direct bonded PPMgLN ridge waveguide

doi:10.1007/s12200-011-0133-1

Front Optoelec Chin

2011, Vol. 4

Issue (3) : 343-347 https://doi.org/10.1007/s12200-011-0133-1

RESEARCH ARTICLE

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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Abstract

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 Author(s): ZHOU Yujie,Email:yujie.zhouhust@gmail.com

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.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-011-0133-1
https://academic.hep.com.cn/foe/EN/Y2011/V4/I3/343

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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