We propose a novel microwave photonic phase shifter (MWP-PS) architecture which is suitable for on-chip integration. The MWP-PS consists of a laser source, two identical phase modulators (PMs), a tunable optical coupler (TOC), an optical filter and a photodetector (PD). By introducing a microwave signal and its reversed counterpart to the two PMs, respectively, and using the optical filter to remove one of the generated sidebands, a phase shift with its value tuned by the coupling coefficient of the TOC will be introduced to the microwave signal after the PD. A proof-of-concept experiment is carried out. An MWP-PS with a 360° phase shift tuning range and an operational frequency range of 8-40 GHz is achieved.

Date Published: 14 February 2019
PDF: 4 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110482T (14 February 2019); doi: 10.1117/12.2519573

Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)