Investigation of optical feedback in high-speed electroabsorption modulated lasers with a window region

被引：12

作者：

Park, BH ^{[1
]}

Kim, I ^{[1
]}

Kang, BK ^{[1
]}

Bae, YD ^{[1
]}

Lee, SM ^{[1
]}

Kim, YH ^{[1
]}

Jang, DH ^{[1
]}

Kim, TI ^{[1
]}

机构：

[1] Samsung Elect Co, Telecommun R&D Ctr, Gyeonggi Do 442600, South Korea

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2005年 / 17卷 / 04期

关键词：

distributed feedback (DFB) lasers; electroabsorption; monolithic integrated circuits; optical reflection;

D O I：

10.1109/LPT.2005.843954

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：

The optimum waveguide design for optical feedback reduction in a 10-Gb/s electroabsorption modulated laser has been dicussed. A device with a 30-mu m-long window region exhibited as much as 10-15-dB reduction, which is verified by experimental results and the beam propagation calculation. Using a tilted waveguide with the window region, the feedback factor is reduced to as low as -40 dB. Besides low optical feedback, the tilted-and-straight modulator has a sufficient dc extinction ratio and a far-field profile allowing larger than 60% fiber-coupling efficiency.

引用

页码：777 / 779

页数：3

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