Self-calibrating and high-sensitivity microwave phase noise analyzer applying an optical frequency comb generator and an optical-hybrid-based I/Q detector
发布时间：2020-01-13 点击次数：
所属单位：电子信息工程学院
发表刊物：OPTICS LETTERS
关键字：FIBER
摘要：Phase noise analyzers (PNAs) are indispensable for evaluating the short-term stability of microwave signals. In this Letter, a high-sensitivity PNA with self-calibration capability is proposed based on an optical frequency comb generator and an optical-hybrid-based I/Q detector. The negative factors that result in inaccurate measurement, including the direct component interference, amplitude noises of the microwave signal under test and the laser, and phase noise of the laser, are all eliminated through digital signal processing. A proof-of-concept experiment is performed. The established PNA can achieve accurate phase noise measurement with a high sensitivity of -146.1 dBc/Hz at 10 kHz, and the self-calibrating property of the PNA is also verified. (C) 2018 Optical Society of America
ISSN号：0146-9592
是否译文：否
发表时间：2018-10-15
合写作者：Shi, Jingzhan,Zhang, Yu,Ben, De,Sun, Lijun,潘时龙
第一作者：张方正
通讯作者：张方正
