کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9785945 | 1512661 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Calculation of propagation loss in photonic crystal waveguides by FDTD technique and Padé approximation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Calculation of propagation loss in photonic crystal waveguides by FDTD technique and Padé approximation Calculation of propagation loss in photonic crystal waveguides by FDTD technique and Padé approximation](/preview/png/9785945.png)
چکیده انگلیسی
The propagation losses in single-line defect waveguides in a two-dimensional (2D) square-lattice photonic crystal (PC) consisted of infinite dielectric rods and a triangular-lattice photonic crystal slab with air holes are studied by finite-difference time-domain (FDTD) technique and a Padé approximation. The decaying constant β of the fundamental guided mode is calculated from the mode frequency, the quality factor (Q-factor) and the group velocity vg as β = Ï/(2Qvg). In the 2D square-lattice photonic crystal waveguide (PCW), the decaying rate ranged from 103 to 10â4 cmâ1 can be reliably obtained from 8 Ã 103-item FDTD output with the FDTD computing time of 0.386 ps. And at most 1 ps is required for the mode with the Q-factor of 4 Ã 1011 and the decaying rate of 10â7 cmâ1. In the triangular-lattice photonic crystal slab, a 104-item FDTD output is required to obtain a reliable spectrum with the Q-factor of 2.5 Ã 108 and the decaying rate of 0.05 cmâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 248, Issues 4â6, 15 April 2005, Pages 309-315
Journal: Optics Communications - Volume 248, Issues 4â6, 15 April 2005, Pages 309-315
نویسندگان
Qin Chen, Yong-Zhen Huang, Wei-Hua Guo, Li-Juan Yu,