首页|Stable microwave LO distribution via a phase-locked OEO assisted by passive compensation
Stable microwave LO distribution via a phase-locked OEO assisted by passive compensation
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NSTL
Elsevier
? 2021 Elsevier B.V.We present a stable microwave local oscillator (LO) distribution scheme based on a phase-locked optoelectronic oscillator (OEO) assisted by passive compensation. By injecting the LO reference into the phase-locked OEO and locking it with the oscillation signal, a microwave LO with a low phase noise can be tapped at the remote site. Meanwhile, a frequency-mixing-based passive compensation system is utilized to efficiently prevent the remote LO signal from the slow phase drift caused by the temperature susceptibility of fiber. In the experiment, a 10.8 GHz LO signal is stably distributed along a 6.8-km ring fiber to the remote site that is 1.8 km away from the local site. The frequency stability of 3.8 × 10?14 at 1s and 2.3 × 10?17 at 10000 s can be attained. The single-sideband (SSB) phase noise of the received signal at the remote site is up to –110 dBc/Hz at 10 kHz offset frequency with the root-mean-square phase jitter of 0.023 rad.
Optoelectronic oscillatorRadio frequency photonicsStable Frequency distribution
Li S.、Wang H.、Zhang K.、Xie Z.
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Beijing National Research Center for Information Science and Technology Department of Electronic Engineering Tsinghua University
Department of Electronic Engineering Beihang University
NSTL
Elsevier
