TE/TM-Pass Polarizer Based on Lithium Niobate on Insulator Ridge Waveguide

被引：52

作者：

Saitoh, Emi ^{[1
]}

Kawaguchi, Yuki ^{[1
]}

Saitoh, Kunimasa ^{[1
]}

Koshiba, Masanori ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Sapporo, Hokkaido 0600814, Japan

来源：

IEEE PHOTONICS JOURNAL | 2013年 / 5卷 / 02期

关键词：

Theory and design; waveguides; waveguide devices;

D O I：

10.1109/JPHOT.2013.2250938

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a TE/TM-pass polarizer based on a shallow X-cut lithium niobate-on-insulator (LNOI) ridge waveguide. In shallow X-cut LNOI ridge waveguides, the leaky mode is interchanged between TE and TM polarization waves depending on the ridge waveguide height. The phenomenon does not occur in silicon-on-insulator ridge waveguides. We use this special loss mechanism for TE/TM-pass polarizers. We evaluate structural and wavelength dependencies of polarizers by a vectorial finite-element method. The extinction ratios of 108 dB/mm and 27 dB/mm are obtained for TE-pass and TM-pass polarizers.

引用

页数：10

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