National Institute of Standards and Technology, Time and Frequency Division, Boulder, Colorado 80305, USA.
Opt Lett. 2013 May 15;38(10):1712-4. doi: 10.1364/OL.38.001712.
We utilized and characterized high-power, high-linearity modified unitraveling carrier (MUTC) photodiodes for low-phase-noise photonic microwave generation based on optical frequency division (OFD). When illuminated with picosecond pulses from a repetition-rate-multiplied gigahertz Ti:sapphire modelocked laser, the photodiodes can achieve a 10 GHz signal power of +14 dBm. Using these diodes, we generated a 10 GHz microwave tone with less than 500 attoseconds absolute integrated timing jitter (1 Hz-10 MHz) and a phase noise floor of -177 dBc/Hz.We also characterized the electrical response, amplitude-to-phase conversion, saturation, and residual noise of the MUTC photodiodes.
我们利用和表征了大功率、高线性度改进型单载流子晶体管（MUTC）光电二极管，用于基于光频分（OFD）的低相位噪声光生微波产生。当用重复频率倍增的千兆赫钛宝石锁模激光的皮秒脉冲照射时，光电二极管可以实现 10 GHz 信号功率 +14 dBm。使用这些二极管，我们生成了一个 10 GHz 的微波信号，其绝对积分定时抖动小于 500 阿秒（1 Hz-10 MHz），相位噪声底为-177 dBc/Hz。我们还对 MUTC 光电二极管的电响应、幅度到相位转换、饱和和残余噪声进行了表征。
