Photonics-Assisted Super-Octave Microwave Phase Shifter

Mingzheng Lei; Zhennan Zheng; Jinwang Qian; Mutong Xie; Xinlu Gao; Shanguo Huang

doi:10.1109/JPHOT.2019.2893059

IEEE Photonics Journal (Jan 2019)

Photonics-Assisted Super-Octave Microwave Phase Shifter

Mingzheng Lei,
Zhennan Zheng,
Jinwang Qian,
Mutong Xie,
Xinlu Gao,
Shanguo Huang

Affiliations

Mingzheng Lei: ORCiD; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Zhennan Zheng: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Jinwang Qian: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Mutong Xie: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Xinlu Gao: ORCiD; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Shanguo Huang: ORCiD; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China

DOI: https://doi.org/10.1109/JPHOT.2019.2893059
Journal volume & issue: Vol. 11, no. 1
pp. 1 – 11

Abstract

Read online

A photonics-assisted super-octave microwave phase shifter is proposed. The super-octave frequency range is achieved by eliminating the second-order distortions (SDs) with the techniques of polarization interleaving and second-order optical sidebands (2-OSBs) phase processing. Polarization interleaving is based on a polarization-multiplexing dual-drive Mach-Zehnder modulator (PM-DMZM) and single sideband with carrier (SSB+C) modulation. 2-OSBs phase processing is implemented by introducing opposite phase shifts to the ±2-OSBs in a Fourier-domain optical processor (FD-OP). The proposed phase shifter is experimentally verified by proof-of-concept experiments. Experimental results show that flat phase shifts cover a full 360° range with less than 3-dB power variation over 11.5-25 GHz. Besides, excellent long-term stability is presented with a maximum phase/power fluctuation of only 1.49°/0.57 dB. Compared with the conventional FD-OP-based photonic microwave phase shifter, the proposed one improves the second-order spurious free dynamic range (SFDR2) by 13.57 dB.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

About the journal

Abstract

Keywords