Tunable Microwave Phase Shifter Based on Silicon-on-Insulator Microring Resonator

• Published in: IEEE photonics technology letters Vol. 22; no. 12; pp. 869 - 871
• Main Authors: Minhao Pu, Liu Liu, Weiqi Xue, Yunhong Ding, Frandsen, Lars H, Haiyan Ou, Yvind, Kresten, Hvam, Jørn M
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.06.2010; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Conferences; Couplings; Fiber optics; Integrated optics devices; Microwave devices; Microwave photonics; Microwaves; Noise levels; Optical devices; Optical fibers; Optical filters; Optical resonators; Optical wavelength conversion; Phase shift; Phase shifters; Radio frequency; radio-frequency (RF) photonics; Resonators; silicon microring resonator (MRR); Silicon on insulator technology
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2010.2046725

We demonstrate microwave phase shifters based on electrically tunable silicon-on-insulator microring resonators (MRRs). MRRs with different quality factors are fabricated and tested. A continuously tunable phase shift of up to 336° at a microwave frequency of 40 GHz is obtained using a high-quality-factor ( ~28 000) MRR with only 1.6-mW power consumption. A quasi-linear phase shift in the range of 0° -204° at 40 GHz with a radio-frequency power variation less than 1.3 dB is also achieved by using a lower-quality-factor MRR.