29 GHz directly modulated 980 nm vertical-cavity surface emitting lasers with bow-tie shape transverse coupled cavity

被引：112
|
作者：
Dalir, Hamed [1 ]
Koyama, Fumio [1 ,2 ]
机构：
[1] Tokyo Inst Technol, Photon Integrat Syst Res Ctr, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] King Abdulaziz Univ, Dept Phys, Fac Sci, Jeddah 80203 21589, Saudi Arabia
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 09期
关键词：
BANDWIDTH ENHANCEMENT; VCSELS;
D O I：
10.1063/1.4820149
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A concept for the bandwidth enhancement of directly modulated vertical-cavity surface emitting lasers (VCSELs) using a transverse-coupled-cavity (TCC) scheme is proposed, which enables us to tailor the modulation-transfer function. A bow-tie shaped oxide aperture forms the transverse-coupled cavity resulting in optical feedback to boost the modulation speed. While the bandwidth of conventional VCSELs is 9-10 GHz, the 3 dB-bandwidth of the TCC VCSEL is increased by a factor of 3 far beyond the relaxation-oscillation frequency. The maximum bandwidth is currently limited by the photo-detector used in the experiment. Clear 36 Gbps eye opening was attained with an extinction ratio of 4 dB. (C) 2013 AIP Publishing LLC.
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页数：4
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