We demonstrate a fiber-loop ring down multi-function sensors system, which can be used to measure refractive index and curvature simultaneously. Good agreement has been found between theoretical analyses and experimen...We demonstrate a fiber-loop ring down multi-function sensors system, which can be used to measure refractive index and curvature simultaneously. Good agreement has been found between theoretical analyses and experimental results. It has great potential for sensor applications.展开更多
In order to improve the precision of the laser–radio-frequency（RF） synchronization system from sub-picosecond to femtosecond（fs）, a synchronization system between a picosecond laser and a 1.3 GHz RF generator has...In order to improve the precision of the laser–radio-frequency（RF） synchronization system from sub-picosecond to femtosecond（fs）, a synchronization system between a picosecond laser and a 1.3 GHz RF generator has been developed based on a fiber-loop optical-microwave phase detector（FLOM-PD）. Synchronization with fs-level（3.8 fs） rms jitter, integrated from 10 Hz to 1 MHz, is achieved for the first time, to the best of our knowledge, in this kind of configuration. This system will be used for the superconducting RF accelerator at Peking University.展开更多
文摘We demonstrate a fiber-loop ring down multi-function sensors system, which can be used to measure refractive index and curvature simultaneously. Good agreement has been found between theoretical analyses and experimental results. It has great potential for sensor applications.
基金supported by National Key Research and Development Program of China under Grant No.2016YFA0401904
文摘In order to improve the precision of the laser–radio-frequency（RF） synchronization system from sub-picosecond to femtosecond（fs）, a synchronization system between a picosecond laser and a 1.3 GHz RF generator has been developed based on a fiber-loop optical-microwave phase detector（FLOM-PD）. Synchronization with fs-level（3.8 fs） rms jitter, integrated from 10 Hz to 1 MHz, is achieved for the first time, to the best of our knowledge, in this kind of configuration. This system will be used for the superconducting RF accelerator at Peking University.
