Relative Intensity Noise of Vertical-Cavity Surface-Emitting Lasers Subject to Variable Polarization-Optical Feedback

被引:0
作者
Ahmed, Salam Nazhan [1 ]
Ghassemlooy, Z. [1 ]
Busawon, Krishna [1 ]
Zvanovec, Stanislav [2 ]
机构
[1] Northumbria Univ, Fac Engn & Environm, Opt Commun Res Grp, Newcastle Upon Tyne, Tyne & Wear, England
[2] Czech Tech Univ, Dept Electromagnet Field, 2 Tech, Prague 16627, Czech Republic
来源
2014 3RD INTERNATIONAL WORKSHOP IN OPTICAL WIRELESS COMMUNICATIONS (IWOW) | 2014年
关键词
Relative intensity noise; optical feedback; polarization switching; vertical-cavity surface emitting lasers;
D O I
暂无
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
In this paper, the influence of variable polarization angle of the optical feedback on the relative intensity noise (RIN) of a vertical-cavity surface-emitting laser (VCSEL) is experimentally investigated. VCSEL lases in two orthogonally polarized and YP) modes. For the dominant polarization mode (i.e. XP) the RIN is minimum at a polarization angle of 0, while it is a minimum at 90 for the suppressed polarization mode (YP) it is minimum at a polarization angle of 90 degrees. Furthermore, for a high optical feedback level the RIN of the XP mode increases rapidly with the polarization angle, whereas for the YP mode the RIN is low for angles > 45 degrees. In addition, result shows that the relaxation oscillations are damped due to the optical feedback. We also show that as the polarization angle of the optical feedback increases a number of spectral lines appear in VCSEL spectrum, thus representing the complex dynamics behavior induced by the feedback.
引用
收藏
页码:21 / 24
页数:4
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