title: Phase drift cancellation of remote radio frequency transfer using an optoelectronic delay-locked loop.
abstract: In this Letter, we propose a phase drift cancellation method for remote radio frequency transfer. Phase fluctuation along the transmission fiber, which is induced by temperature and pressure changes, is measured and compensated by a heterodyne optoelectronic delay-locked loop. The control loop consists of a heterodyne optoelectronic phase detector, a microwave delay module, and the loop filter. We demonstrate the concept by transmitting a 10 GHz microwave frequency over 50 km single-mode fiber, with subpicosecond jitters measured at the remote end.
authors.affiliation: State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Lumin
authors.initials: L
authors.lastname: Zhang
authors.forename: Le
authors.initials: L
authors.lastname: Chang
authors.forename: Yi
authors.initials: Y
authors.lastname: Dong
authors.forename: Weilin
authors.initials: W
authors.lastname: Xie
authors.forename: Hao
authors.initials: H
authors.lastname: He
authors.forename: Weisheng
authors.initials: W
authors.lastname: Hu