Microwave frequency transfer over a 112-km urban fiber link based on electronic phase compensation

Xue Wen-Xiang^{1, 2, 3}, Zhao Wen-Yu^{1, 2}, Quan Hong-Lei^{1, 2, 3}, Zhao Cui-Chen^{1, 2, 3}, Xing Yan^{1, 2}, Jiang Hai-Feng^{1, 2}, Zhang Shou-Gang^{1, 2, †}

Architecture of the compensation system for fiber-based microwave transfer. VCO: voltage-controlled oscillator; PD: photodiode.