Optical waveguide grating couplers: 2nd-order and 4th-order finite-difference time-domain analysis

被引：4
|
作者：
Papadopoulos, Aristeides D. [1 ]
Glytsis, Elias N. [1 ]
机构：
[1] Natl Tech Univ Athens, Sch Elect & Comp Engn, GR-15773 Athens, Greece
来源：
APPLIED OPTICS | 2009年 / 48卷 / 27期
关键词：
EFFECTIVE PERMITTIVITIES; FIELD ANALYSIS; DESIGN; POLARIZATION; INPUT; ERROR;
D O I：
10.1364/AO.48.005164
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Output optical waveguide grating couplers are rigorously analyzed using the 2-order and the 4-order finite-difference time-domain (FDTD) method in conjunction with the total field/scattered field (TF-SF) approach and special averaging and regularization techniques for the mitigation of permittivity discontinuities. Volume-holographic and surface-relief grating couplers are analyzed for both TE and TM polarizations. The 2- and 4-order FDTD results are compared in terms of computational efficiency and accuracy. In addition, the FDTD results are compared to the approximate ones obtained by the rigorous coupled-wave analysis in conjunction with the leaky modes. (C) 2009 Optical Society of America
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页码：5164 / 5175
页数：12
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