Ultrahigh-Q of the L3 photonic crystal microcavity

被引：5

作者：

Benmerkhi, Ahlem ^{[1
]}

Bouchemat, Mohamed ^{[1
]}

Bouchemat, Touraya ^{[1
]}

机构：

[1] Mentouri Univ Constantine, Dept Elect, Constantine, Algeria

来源：

OPTIK | 2013年 / 124卷 / 22期

关键词：

FDTD; Microcavity; Photonic crystal; Waveguide; CHANNEL DROP FILTER; BAND-GAP; DEFECT; LASER; SLAB;

D O I：

10.1016/j.ijleo.2013.04.028

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we theoretically investigate the L3 cavity with three missing holes in the center. They are of great interest for the realization of low threshold laser nanosources and for a strong interaction between the cavity and sources. In order to improve the transmission and Q factor simultaneously of these structure, by reducing unwanted reflection due to mismatch and through minimization of propagation losses, we modified L3 geometry: three missing holes in a line where both lateral displacement of the first hole adjacent to the cavity, d, and their radius, r, were changed. A photonic microcavity with a high Q factor of 1.8741 x 10(7) and a modal volume V of 0.351 is demonstrated. We demonstrate that the calculate Q factor for the designed cavity increases by a factor of 49 relative to that for a cavity without displaced and reduced air holes, while the modal volume remains almost constant. (C) 2013 Elsevier GmbH. All rights reserved.

引用

页码：5719 / 5722

页数：4

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