Sub-kHz linewidth, hybrid III-V/silicon wavelength-tunable laser diode operating at the application-rich 1647-1690 nm.
Sub-kHz linewidth, hybrid III-V/silicon wavelength-tunable laser diode operating at the application-rich 1647-1690 nm.
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DOI：
10.1364/oe.400666
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发表时间：
2020-08
期刊：
影响因子：
3.8
通讯作者：
Jia Xu Brian Sia;Xiang Li;Wanjun Wang;Z. Qiao;Xin Guo;Jin Zhou;C. Littlejohns;Chongyang Liu;G. Reed;Hong Wang
中科院分区：
文献类型：
--
作者：
Jia Xu Brian Sia;Xiang Li;Wanjun Wang;Z. Qiao;Xin Guo;Jin Zhou;C. Littlejohns;Chongyang Liu;G. Reed;Hong Wang
大约1650 nm的波长区域使得能够普及应用。一些实例包括甲烷光谱、自由空间/光纤通信、激光雷达、气体传感（即C2 H2、C2 H4、C3 H8）、手术和医疗诊断。在这项工作中，通过III-V族光放大器和扩展的，低损耗的波长可调谐的硅游标腔之间的混合集成，我们报告的第一次，III-V族/硅混合波长可调谐激光器覆盖的应用丰富的波长范围1647-1690 nm。室温连续波工作，实现了高达31.1 mW的输出功率，对应于46.01 dB的最大边模抑制比。该激光器是超相干的，估计线宽为0.7 kHz，其特征在于将35公里长的循环光纤环路集成到延迟自外差干涉仪设置中。激光器线宽在混合/异质III-V/硅激光器中是最低的。
The wavelength region about of 1650 nm enables pervasive applications. Some instances include methane spectroscopy, free-space/fiber communications, LIDAR, gas sensing (i.e. C2H2, C2H4, C3H8), surgery and medical diagnostics. In this work, through the hybrid integration between an III-V optical amplifier and an extended, low-loss wavelength tunable silicon Vernier cavity, we report for the first time, a III-V/silicon hybrid wavelength-tunable laser covering the application-rich wavelength region of 1647-1690 nm. Room-temperature continuous wave operation is achieved with an output power of up to 31.1 mW, corresponding to a maximum side-mode suppression ratio of 46.01 dB. The laser is ultra-coherent, with an estimated linewidth of 0.7 kHz, characterized by integrating a 35 km-long recirculating fiber loop into the delayed self-heterodyne interferometer setup. The laser linewidth is amongst the lowest in hybrid/heterogeneous III-V/silicon lasers.