title: All-optical microwave bandpass filter and phase shifter using a broadband optical source and an optical phase modulator.
abstract: We propose a system that can perform microwave bandpass filtering and phase shifting simultaneously without redundant optical-electrical and electrical-optical conversions. The principle is based on polarization-dependant phase modulation of a broadband optical source and the variable optical carrier time shift method. A single-bandpass microwave photonic filter with a central frequency of 10.8 GHz, a 3-dB bandwidth of 670 MHz, and a 360° phase tuning range is experimentally demonstrated. The capability of our configuration to implement wideband phase shifters is also verified.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics/Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China. xxx03@mails.tsinghua.edu.cn
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Xue
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Zheng
authors.forename: Hanyi
authors.initials: H
authors.lastname: Zhang
authors.forename: Bingkun
authors.initials: B
authors.lastname: Zhou