Analysis of Lithium Niobate Electrooptic Long-Period Waveguide Gratings

被引：10
|
作者：
Jin, Wei [1 ]
Chiang, Kin Seng [1 ]
Liu, Qing [1 ]
机构：
[1] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2010年 / 28卷 / 10期
关键词：
Electrooptic filter; gratings; lithium niobate; long-period gratings; modeling; optical filters; optical waveguides; waveguide filters;
D O I：
10.1109/JLT.2010.2045155
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present an approximate step-index waveguide model for the study of lithium-niobate (LiNbO3) electrooptic (EO) long-period waveguide grating filters. The model takes into account the non-uniform spatial distributions of the EO coefficient and the applied electric field. Using this model, we analyze in detail the effects of the grating and waveguide parameters on the performance of the filter with the objective of identifying a set of optimal design parameters for the realization of an efficient filter. Guided by the results from the analysis, we fabricated a 12-mm-long EO grating, which produced a 24-dB rejection band at a driving voltage of 49 V.
引用
收藏
页码：1477 / 1484
页数：8
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