Bidirectional grating coupler based optical modulator for low-loss Integration and low-cost fiber packaging

被引：11

作者：

Zhang, Zanyun ^{[1
]}

Huang, Beiju ^{[1
,2
]}

Zhang, Zan ^{[1
]}

Cheng, Chuantong ^{[1
]}

Chen, Hongda ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China

[2] Tsinghua Univ, Dept Elect Engn, State Key Lab Integrated Optoelect, Beijing 100084, Peoples R China

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 12期

关键词：

SILICON; POWER;

D O I：

10.1364/OE.21.014202

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We proposed and demonstrated a novel optical modulator based on a bidirectional grating coupler designed for perfectly vertical fiber coupling. The grating functions as the fiber coupler and 3-dB splitter. To observe the interference, an arm difference of 30 mu m is introduced. As a result of the high coupling efficiency and near perfect split ratio of the grating coupler, this device exhibits a low on-chip insertion loss of 5.4dB (coupling loss included) and high on-off extinction ratio more than 20dB. The modulation efficiency is estimated to be within 3-3.84V.cm. In order to investigate the fiber misalignment tolerance of this modulator, misalignment influence of the static characteristics is analyzed. 10Gb/s Data transmission experiments of this device are performed with different fiber launch positions. The energy efficiency is estimated to be 8.1pJ/bit. (C) 2013 Optical Society of America

引用

页码：14202 / 14214

页数：13

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