Taper-Integrated Multimode-Interference Based Waveguide Crossing Design

被引：59

作者：

Chen, Chyong-Hua ^{[1
]}

Chiu, Chia-Hsiang

机构：

[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30010, Taiwan

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 2010年 / 46卷 / 11期

关键词：

High index contrast; multimode interference; silicon wire waveguides; waveguide crossings; TALK;

D O I：

10.1109/JQE.2010.2057410

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 present a design technique for a compact waveguide crossing by using a 90 multimode-interference (MMI) based waveguide crossing sandwiched by four identical miniaturized tapers where the power of the input guided mode is coupled into even modes of the MMI section at a specific power ratio and with different phases, thereby reducing the dimension of this waveguide crossing with imperceptible loss and crosstalk. Using the finite difference time domain method, we demonstrate that the MMI-based waveguide crossing embedded in short Gaussian tapers has a size 5426 nm x 5426 nm, insertion loss 0.21 dB, and crosstalk -44.4 dB at the wavelength of 1550 nm and broad transmission spectrum ranging from 1500 to 1600 nm.

引用

页码：1656 / 1661

页数：6

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