Spin-Injected Birefringent VCSELs for Analog Radio-Over-Fiber Systems
Spin-Injected Birefringent VCSELs for Analog Radio-Over-Fiber Systems
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DOI：
10.1109/lpt.2021.3059697
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发表时间：
2021-03
影响因子：
2.6
通讯作者：
N. Yokota;K. Ikeda;H. Yasaka
中科院分区：
文献类型：
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作者：
N. Yokota;K. Ikeda;H. Yasaka
我们提出并数值研究了双折射垂直腔面发射激光器（VCSELs）在自旋极化电子注入和调制下的应用，用于模拟光纤无线电（RoF）系统。在双折射VCSEL中分别调制注入电流和电子自旋极化以产生数据信号，并使用毫米波载波和偏振器将两个正交极化组合在一起。不注入自旋的初步实验证实，双折射VCSEL偏振模分裂产生的24ghz载流子可以用于周期为6.4 ns的方波信号的外差检测。我们的发现标志着将具有超高频调制能力的自旋注入双折射vcsel应用于模拟RoF系统的第一步。
We propose and numerically investigate the use of birefringent vertical-cavity surface-emitting lasers (VCSELs) under the injection and modulation of spin polarized electrons for application to analog radio over fiber (RoF) systems. Injection current and electron spin polarization in a birefringent VCSEL are individually modulated for generating data signals and a millimeter-wave carrier and a polarizer is used to combine two orthogonal polarizations. A preliminary experiment without spin injections confirms that 24-GHz carrier generation originating from polarization-mode splitting of the birefringent VCSEL can be used for the heterodyne detection of square-wave signals with a period of 6.4 ns. Our findings mark the first step in applying spin-injected birefringent VCSELs having the capability of ultra-high-frequency modulation for application to analog RoF systems.