High efficiency of graded index photonic crystal as an input coupler

被引：52

作者：

Cakmak, Atilla Ozgur ^{[1
,2
]}

Colak, Evrim ^{[1
,2
]}

Caglayan, Humeyra ^{[1
,2
]}

Kurt, Hamza ^{[3
]}

Ozbay, Ekmel ^{[1
,2
]}

机构：

[1] Bilkent Univ, Dept Phys, Nanotechnol Res Ctr, TR-06800 Ankara, Turkey

[2] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey

[3] TOBB Univ Econ & Technol, Dept Elect & Elect Engn, TR-06560 Ankara, Turkey

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 10期

关键词：

finite difference time-domain analysis; gradient index optics; optical couplers; optical materials; photonic crystals; WAVE-GUIDES; SELF-COLLIMATION; TAPER;

D O I：

10.1063/1.3130403

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A graded index photonic crystal (GRIN PC) configuration was placed at the input side of a photonic crystal waveguide (PCW) in order to efficiently couple the light waves into the waveguide. We compared the transmission efficiencies of light in the absence and presence of the GRIN PC structure. We report a significant improvement in coupling when the GRIN PC is incorporated with the PCW. The intensity profiles were obtained by carrying out the experiments at microwave frequencies. Finite difference time domain based simulations were found to be in good agreement with our experimental results.

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页数：5

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