论文标题
300 GHz基于Kerr微弹器频率梳子稳定至低噪声微波参考
300 GHz generation based on a Kerr microresonator frequency comb stabilized to a low noise microwave reference
论文作者
论文摘要
在这封信中，我们在实验中表明了基于在孤子方向运行的Kerr微孔子频率梳子的低噪声300GHz波产生。 10GHz GPS学科的介电谐振器的频谱纯度通过光电子锁定环转移到孤子梳子的300GHz重复率频率上。两条相邻的梳子线在单流旅行载体光电二极管上击败，将300GHz毫米波信号发射到波导中。在越野测量中，我们测量了相位噪声的300GHz功率谱密度为-88dBC/Hz，-10kHz时为-105dbc/hz，分别为1MHz傅立叶频率。 300GHz时的自由运行的分数频率不稳定为$ 1 \ times 10^{ - 9} $在1秒平均时间。稳定在GPS信号上，我们报告了1秒钟的环内剩余不稳定为$ 2 \ times 10^{ - 15} $，平均为1000秒的<$ 1 \ times 10^{ - 17} $。这样的系统为实现紧凑，低功耗毫米波振荡器的实现提供了有希望的途径，该振荡器的噪声性能低。
In this letter, we experimentally demonstrate low noise 300GHz wave generation based on a Kerr microresonator frequency comb operating in soliton regime. The spectral purity of a 10GHz GPS-disciplined dielectric resonant oscillator is transferred to the 300GHz repetition rate frequency of the soliton comb through an optoelectronic phase-locked loop. Two adjacent comb lines beat on a uni-travelling carrier photodiode emitting the 300GHz millimeter-wave signal into a waveguide. In an out-of-loop measurement we have measured the 300GHz power spectral density of phase noise to be -88dBc/Hz, -105dBc/Hz at 10kHz, 1MHz Fourier frequency, respectively. The free-running fractional frequency instability at 300GHz is $1 \times 10^{-9}$ at 1 second averaging time. Stabilized to a GPS signal, we report an in-loop residual instability of $2 \times 10^{-15}$ at 1 second which averages down to < $1 \times 10^{-17}$ at 1000 seconds. Such system provides a promising path to the realization of compact, low power consumption millimeter-wave oscillators with low noise performance for out-of-the-lab applications.
