title: Photonic radio-frequency dissemination via optical fiber with high-phase stability.
abstract: We demonstrate a photonic radio-frequency transmission system via optical fiber. Optical radio-frequency signal is generated utilizing a Mach-Zehnder modulator based on double-side-band with carrier suppression modulation scheme. The phase error induced by optical fiber transmission is transferred to an intermediate frequency signal by the dual-heterodyne phase error transfer scheme, and then canceled by a phase locked loop. With precise phase compensation, a radio frequency with high-phase stability can be obtained at the remote end. We performed 20.07-GHz radio-frequency transfer over 100-km optical fiber, and achieved residual phase noise of -65  dBc/Hz at 1-Hz offset frequency, and the RMS timing jitter in the frequency range from 0.01 Hz to 1 MHz reaches 110 fs. The long-term frequency stability also achieves 8×10(-17) at 10,000 s averaging time.
authors.forename: Xiaocheng
authors.initials: X
authors.lastname: Wang
authors.forename: Zhangweiyi
authors.initials: Z
authors.lastname: Liu
authors.forename: Siwei
authors.initials: S
authors.lastname: Wang
authors.forename: Dongning
authors.initials: D
authors.lastname: Sun
authors.forename: Yi
authors.initials: Y
authors.lastname: Dong
authors.forename: Weisheng
authors.initials: W
authors.lastname: Hu