Enhanced Frequency Stability over Fiber Link with Improved Phase Discrimination Scheme

Xiaocheng Wang; Wei Wei; Yi Dong

doi:10.1109/ACCESS.2019.2955670

Enhanced Frequency Stability over Fiber Link with Improved Phase Discrimination Scheme

Xiaocheng Wang^*, Wei Wei, Yi Dong

^*Corresponding author for this work

School of Optics and Photonics

Tianjin Normal University

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We demonstrate a phase-stability radio-frequency (RF) dissemination system via fiber link with direct phase discrimination. The phase fluctuation of the RF signal is identically transferred to a 10 MHz intermediate frequency (IF) by using dual-heterodyne phase error transfer. It guarantees that the phase discrimination of the IF signals and the atomic clock frequency signal can be directly performed without the frequency division or multiplication. This scheme can enhance the frequency stability of the dissemination system by mean of higher precision phase detection and high noise suppression capability. Experimentally, the residual phase noise of compensated system with improved phase detection scheme is-50 dBc/Hz and-67 dBc/Hz at 0.01 Hz and 1 Hz frequency offset, respectively, the RMS timing jitter in the frequency range from 0.01 Hz to 1 MHz reaches about 50 fs. Compared with the frequency division and multiplication methods, the frequency stability is improved nearly one orders of magnitude to 5× 10^-17 at 2000 s averaging time.

Original language	English
Article number	8911482
Pages (from-to)	171405-171410
Number of pages	6
Journal	IEEE Access
Volume	7
DOIs	https://doi.org/10.1109/ACCESS.2019.2955670
Publication status	Published - 2019

Keywords

Microwave photonics
analog optical signal processing
fiber optics communications
phase-locked loop

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10.1109/ACCESS.2019.2955670

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title = "Enhanced Frequency Stability over Fiber Link with Improved Phase Discrimination Scheme",

abstract = "We demonstrate a phase-stability radio-frequency (RF) dissemination system via fiber link with direct phase discrimination. The phase fluctuation of the RF signal is identically transferred to a 10 MHz intermediate frequency (IF) by using dual-heterodyne phase error transfer. It guarantees that the phase discrimination of the IF signals and the atomic clock frequency signal can be directly performed without the frequency division or multiplication. This scheme can enhance the frequency stability of the dissemination system by mean of higher precision phase detection and high noise suppression capability. Experimentally, the residual phase noise of compensated system with improved phase detection scheme is-50 dBc/Hz and-67 dBc/Hz at 0.01 Hz and 1 Hz frequency offset, respectively, the RMS timing jitter in the frequency range from 0.01 Hz to 1 MHz reaches about 50 fs. Compared with the frequency division and multiplication methods, the frequency stability is improved nearly one orders of magnitude to 5× 10-17 at 2000 s averaging time.",

keywords = "Microwave photonics, analog optical signal processing, fiber optics communications, phase-locked loop",

author = "Xiaocheng Wang and Wei Wei and Yi Dong",

note = "Publisher Copyright: {\textcopyright} 2013 IEEE.",

year = "2019",

doi = "10.1109/ACCESS.2019.2955670",

language = "English",

volume = "7",

pages = "171405--171410",

journal = "IEEE Access",

issn = "2169-3536",

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T1 - Enhanced Frequency Stability over Fiber Link with Improved Phase Discrimination Scheme

AU - Wang, Xiaocheng

AU - Wei, Wei

AU - Dong, Yi

PY - 2019

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N2 - We demonstrate a phase-stability radio-frequency (RF) dissemination system via fiber link with direct phase discrimination. The phase fluctuation of the RF signal is identically transferred to a 10 MHz intermediate frequency (IF) by using dual-heterodyne phase error transfer. It guarantees that the phase discrimination of the IF signals and the atomic clock frequency signal can be directly performed without the frequency division or multiplication. This scheme can enhance the frequency stability of the dissemination system by mean of higher precision phase detection and high noise suppression capability. Experimentally, the residual phase noise of compensated system with improved phase detection scheme is-50 dBc/Hz and-67 dBc/Hz at 0.01 Hz and 1 Hz frequency offset, respectively, the RMS timing jitter in the frequency range from 0.01 Hz to 1 MHz reaches about 50 fs. Compared with the frequency division and multiplication methods, the frequency stability is improved nearly one orders of magnitude to 5× 10-17 at 2000 s averaging time.

AB - We demonstrate a phase-stability radio-frequency (RF) dissemination system via fiber link with direct phase discrimination. The phase fluctuation of the RF signal is identically transferred to a 10 MHz intermediate frequency (IF) by using dual-heterodyne phase error transfer. It guarantees that the phase discrimination of the IF signals and the atomic clock frequency signal can be directly performed without the frequency division or multiplication. This scheme can enhance the frequency stability of the dissemination system by mean of higher precision phase detection and high noise suppression capability. Experimentally, the residual phase noise of compensated system with improved phase detection scheme is-50 dBc/Hz and-67 dBc/Hz at 0.01 Hz and 1 Hz frequency offset, respectively, the RMS timing jitter in the frequency range from 0.01 Hz to 1 MHz reaches about 50 fs. Compared with the frequency division and multiplication methods, the frequency stability is improved nearly one orders of magnitude to 5× 10-17 at 2000 s averaging time.

KW - Microwave photonics

KW - analog optical signal processing

KW - fiber optics communications

KW - phase-locked loop

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Enhanced Frequency Stability over Fiber Link with Improved Phase Discrimination Scheme

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