Abstract

We present a continuously tunable silicon photonics assisted radio frequency (RF) phase shifter using a coupled microring resonator. Using the coupled cavity, we demonstrate a sub-1 dB power penalty for a RF bandwidth of 34.5 GHz (9–43.5 GHz) and a phase shift of $ \pi $ over the reported frequency range. Rigorous optimization of the cavity design using the coupled-mode theory is carried out to realize ultranarrow resonance peaks with a low-extinction ratio and large phase shift. Thermal tuning of the cavity is used to tune the phase while all-optical tuning is exploited to achieve broadband operation. We present a detailed simulation and experimental study of the proposed configuration. The proposed device configuration exhibits a configurable resonance linewidth and extinction ratio that allows for a broad bandwidth and an extremely low power penalty microwave phase shifter. We believe the demonstration would allow better integration of the on-chip functional elements of integrated microwave photonics.

© 2020 Optical Society of America

Integrated microwave photonic phase shifter with full tunable phase shifting range (> 360°) and RF power equalization

Suen Xin Chew, Duanni Huang, Liwei Li, Shijie Song, Minh A. Tran, Xiaoke Yi, and John E. Bowers
Opt. Express 27(10) 14798-14808 (2019)

Widely tunable microwave phase shifter based on silicon-on-insulator dual-microring resonator

Minhao Pu, Liu Liu, Weiqi Xue, Yunhong Ding, Haiyan Ou, Kresten Yvind, and Jørn M. Hvam
Opt. Express 18(6) 6172-6182 (2010)

Tunable wideband microwave photonic phase shifter using on-chip stimulated Brillouin scattering

Mattia Pagani, David Marpaung, Duk-Yong Choi, Steve J. Madden, Barry Luther-Davies, and Benjamin J. Eggleton
Opt. Express 22(23) 28810-28818 (2014)

Linear and stable photonic radio frequency phase shifter based on a dual-parallel Mach–Zehnder modulator using a two-drive scheme

Jianguo Shen, Guiling Wu, Weiwen Zou, Ruihao Chen, and Jianping Chen
Appl. Opt. 52(34) 8332-8337 (2013)

Beam steering with ultracompact and low-power silicon resonator phase shifters

Hugo Larocque, Leonardo Ranzani, James Leatham, Jeffrey Tate, Alex Niechayev, Thomas Yengst, Tin Komljenovic, Charley Fodran, Duane Smith, and Mohammad Soltani
Opt. Express 27(24) 34639-34654 (2019)