Photonic Terahertz Carrier Generation Using an Optical Feedback Mode-Lock Laser Diode
Photonic Terahertz Carrier Generation Using an Optical Feedback Mode-Lock Laser Diode
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DOI：
10.1109/jphot.2021.3074945
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发表时间：
2021-06
影响因子：
2.4
通讯作者：
Huan Wang;D. Lu;Ruikang Zhang;Lingjuan Zhao
中科院分区：
文献类型：
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作者：
Huan Wang;D. Lu;Ruikang Zhang;Lingjuan Zhao
提出了一种基于分布式布拉格反射镜的锁模激光二极管(MLLD)的可调谐窄线宽太赫兹(THz)载波产生方案，并进行了实验验证。获得了覆盖D波段(110-170 GHz)和H波段(220-325 GHz)的光子太赫兹载波。在反馈环路的辅助下，多模半导体激光器的光线宽由121.7 MHz降至1 kHz，外差光载波线宽由121.7 kHz降至2.1 kHz，满足太赫兹高阶调制格式通信系统的线宽容限。
A tunable narrow-linewidth photonic terahertz (THz) carrier generation scheme using a distributed-Bragg-reflector-based mode-locked laser diode (MLLD) with optical feedback and mode filtering technique is proposed and experimentally demonstrated. Photonic terahertz carrier covering the D-band (110–170 GHz), and H-band (220–325 GHz) was obtained. With the assistance of the feedback loop, the optical linewidth of the MLLD was reduced from MHz to kHz level, and the heterodyning photonics carrier linewidth was reduced from 121.7 kHz to 2.1 kHz, satisfying the linewidth tolerance in the THz communication system with high-order modulation formats.