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Toward a Widely Tunable Narrow Linewidth RF Source utilizing an Integrated Heterogenous Silicon Photonic Module

机译:利用集成的异质硅光子模块实现宽可调的窄线宽射频源

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A system for generating widely tunable, narrow-line RF signals from a pair of injection-locked lasers has been developed. By injection seeding one laser with a sideband obtained from a second laser that is phase modulated by a spectrally pure low-frequency RF reference oscillator and then mixing these coherent optical outputs on a fast photodiode, RF with the same linewidth and phase noise characteristics as the reference oscillator can be produced. By using harmonics of the reference oscjllator the RF output can be tuned over a much wider range than the reference oscillator while maintaining its narrow linewidth.Here we present the results of our efforts to develop an integrated version of this system, based on a silicon-photonic integrated circuit coupled to Ⅲ-Ⅴ semiconductor gain chips.Towards that goal we have successfully demonstrated an integrated module and shown tunable RF generation with a 1 Hz linewidth.
机译:已经开发出一种用于从一对注入锁定激光器产生可广泛调谐的窄线RF信号的系统。通过注入从第二个激光器获得的边带对一个激光器进行播种,该边带由频谱纯的低频RF参考振荡器进行相位调制,然后将这些相干光输出混合在快速光电二极管,RF上,该RF具有相同的线宽和相位噪声特性可以产生参考振荡器。通过使用参考振荡器的谐波,可以在比参考振荡器更宽的范围内调谐射频输出,同时保持其窄的线宽。在此,我们介绍了我们开发的基于该硅的系统的集成版本的成果。耦合到Ⅲ-Ⅴ型半导体增益芯片的光子集成电路。朝着这个目标,我们成功地演示了一个集成模块,并显示了线宽为1 Hz的可调谐RF产生。

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