CMOS-Compatible Polarization Splitting Grating Couplers With a Backside Metal Mirror

被引：59

作者：

Zaoui, Wissem Sfar ^{[1
]}

Kunze, Andreas ^{[1
]}

Vogel, Wolfgang ^{[1
]}

Berroth, Manfred ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Elect & Opt Commun Engn, D-70569 Stuttgart, Germany

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 14期

关键词：

Grating coupler; metal mirror; photonic integrated circuits; polarization splitter; silicon-on-insulator;

D O I：

10.1109/LPT.2013.2266132

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 highly efficient 1-D grating structure that serves to couple light between standard optical fibers and single-mode waveguides in the silicon-on-insulator platform and to split both orthogonal polarization states. The efficiency of the fabricated coupler is enhanced by a backside metal mirror and reaches -2.4 dB for both polarizations at 1552 nm with an extinction ratio >25 dB in a wide wavelength range. The efficiency can be theoretically improved to -1.1 dB when optimizing the number of periods and using a nonuniform grating.

引用

页码：1395 / 1397

页数：3

共 10 条

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