Fiber-optic joint time and frequency transfer with the same wavelength

التفاصيل البيبلوغرافية
العنوان: Fiber-optic joint time and frequency transfer with the same wavelength
المؤلفون: Youzhen Gui, Jianfeng Sun, Nan Cheng, Yanguang Sun, Jialiang Wang, Chaolei Yue, Mingyu Jiang, Haiwen Cai, Yueli Xi, Fei Yang
سنة النشر: 2019
مصطلحات موضوعية: Signal Processing (eess.SP), Optical fiber, Time signal, 02 engineering and technology, 01 natural sciences, Noise (electronics), Time and frequency transfer, law.invention, 010309 optics, symbols.namesake, Optics, Interference (communication), law, 0103 physical sciences, FOS: Electrical engineering, electronic engineering, information engineering, Rayleigh scattering, Electrical Engineering and Systems Science - Signal Processing, Physics, business.industry, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, symbols, 0210 nano-technology, business, Phase modulation, Intensity modulation
الوصف: Optical fiber links have proven their powerful ability to transfer the ultrastable clock signals over a national and continental metrological optical network. In this Letter, we propose and demonstrate a new scheme that time and frequency signals are modulated on the same laser wavelength with phase and intensity modulation by an independent electro-optic modulator, respectively. Different wavelengths are used in two opposite directions to prevent Rayleigh scattering. The noise changes caused by the fluctuations of the transfer links are actively canceled at the local site by optical delay lines. Radio frequency with 1 GHz and time signal with one pulse per second (1 PPS) are transmitted over 110 km fiber spools. The experimental results demonstrate that frequency instabilities of 1.7 E − 14 at 1 s and 5.9 E − 17 at 10 4 s and time interval transfer of 1 PPS signal with sub-ps stability after 1000 s are obtained. This novel scheme offers advantages with respect to reduce the channel in the fiber network, and can keep the time and frequency signal free from interference with each other.
اللغة: English
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a829316efb1b261126fa9e13fcf539b
http://arxiv.org/abs/1909.03197
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....0a829316efb1b261126fa9e13fcf539b
قاعدة البيانات: OpenAIRE