Broadband Silicon-On-Insulator directional couplers using a combination of straight and curved waveguide sections

被引：70
作者：
Chen, George F. R. [1 ]
Ong, Jun Rong [2 ]
Ang, Thomas Y. L. [2 ]
Lim, Soon Thor [2 ,3 ]
Png, Ching Eng [2 ,3 ]
Tan, Dawn T. H. [1 ]
机构：
[1] Singapore Univ Technol & Design, 8 Somapah Rd, Singapore 487372, Singapore
[2] Agcy Sci Technol & Res, Inst High Performance Comp, Elect & Photon Dept, 1 Fusionopolis Way, Singapore 138632, Singapore
[3] Optic2Connect O2C Pte Ltd, 79 Ayer Rajah Crescent 01-14, Singapore 139951, Singapore
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
关键词：
WAVELENGTH; SWITCH; POLARIZATION; RESONATORS; DISPERSION; BANDWIDTH;
D O I：
10.1038/s41598-017-07618-6
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Broadband Silicon-On-Insulator (SOI) directional couplers are designed based on a combination of curved and straight coupled waveguide sections. A design methodology based on the transfer matrix method (TMM) is used to determine the required coupler section lengths, radii, and waveguide cross-sections. A 50/50 power splitter with a measured bandwidth of 88 nm is designed and fabricated, with a device footprint of 20 mu m x 3 mu m. In addition, a balanced Mach-Zehnder interferometer is fabricated showing an extinction ratio of >16 dB over 100 nm of bandwidth.
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页数：8
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