Huang Chung-Ping, Huang Yu-Ming, Shih Hsiang-Yun, Hsiao Fu-Chun, Chen Chun-Hong, Hsu Shun-Chieh, Lin Chien-Chung
Institute of Lighting and Energy Photonics, College of Photonics, National Chiao-Tung University, Tainan, Taiwan.
Institute of Photonic System, College of Photonics, National Chiao-Tung University, Tainan, Taiwan.
Nanoscale Res Lett. 2020 Apr 17;15(1):84. doi: 10.1186/s11671-020-03317-w.
A three-section distributed feedback laser with a 2.5 InP/air pair of distributed Bragg reflectors (DBRs) was fabricated and analyzed in terms of its microwave generation capability. A widely tunable single radio frequency (RF) signal can be detected using optical heterodyning, and the tuning range is from 2 to 45 GHz. The incorporation of the third section provides an opportunity to present the dual RF operation when three emission peaks are near to each other in the wavelength domain. The proposed design provides a 21.3% enhancement in the RF tuning range compared with the range of a two-section laser (35.29 GHz versus 42.81 GHz). The compactness of the proposed device can be useful for future radio-over-fiber applications.
制作了一个具有2.5对InP/空气分布式布拉格反射器（DBR）的三段式分布反馈激光器，并对其微波产生能力进行了分析。利用光学外差法可以检测到一个宽可调谐的单射频（RF）信号，调谐范围为2至45 GHz。当三个发射峰在波长域彼此接近时，第三部分的加入为实现双射频操作提供了机会。与两段式激光器的调谐范围（35.29 GHz对42.81 GHz）相比，所提出的设计使射频调谐范围提高了21.3%。所提出器件的紧凑性对于未来的光纤无线电应用可能是有用的。
