Design of compact ring resonator and Mach-Zehnder interferometer with air trenches

被引：1

作者：

Kim, S ^{[1
]}

Jiang, JH ^{[1
]}

Nordin, GP ^{[1
]}

机构：

[1] Univ Alabama, Nano & Micro Devices Ctr, Huntsville, AL 35899 USA

来源：

OPTICAL ENGINEERING | 2006年 / 45卷 / 05期

基金：

美国国家科学基金会;

关键词：

planar lightwave circuit; air trenches; ring resonator; Mach-Zehnder interferometer; total internal reflection; integrated optics; guided waves; integrated optics devices;

D O I：

10.1117/1.2202926

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the design of a compact ring resonator (RR) and Mach-Zehnder interferometer (MZI) in a low-refractive-index-contrast waveguide material system through the use of air trenches. A narrow air trench at the intersection of one input and two output waveguides can function as a high-efficiency splitter, while wider air trenches operate as waveguide bends. We first discuss the design of individual splitters and bends and then show how they can be used to realize a compact MZI and RR. The RR has a footprint of only 70 x 100 mu m, and its optical efficiency at the drop wavelengths is approximate to 86%. The free spectral range and full width at half maximum are 7.2 and 0.5 nm, while the Q factor is > 3,000. The MZI occupies only 165 x 130 mu m, and its calculated optical efficiency is 90%. (C) 2006 The Society of Photo-Optical Instrumentation Engineers.

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