Realizing Parity-Time Symmetry in a Single-Physical-Loop Optoelectronic Oscillator

Yu Qiao, Yu Zhang, Erwin H.W. Chan, Xudong Wang, Bai Ou Guan, Xinhuan Feng, Jianping Yao

Research output: Chapter in Book/Report/Conference proceedingConference Paper published in Proceedingspeer-review

Abstract

An Optoelectronic Oscillator (OEO) for single frequency oscillation enabled by broken parity time (PT) symmetry is presented. The PT symmetry is realized based on two equivalent loops with the gain loop formed by the beating of the optical carrier with the ±1st order sidebands and the loss loop formed by the beating of the ±1st order sidebands with the ±2nd order sidebands at a photodetector in a single-physical-loop OEO. Once the gain and loss coefficients in the system are made identical in magnitude and are greater than the coupling coefficient, PT symmetry is broken and a single frequency oscillation is achieved. Experimental results show that a microwave signal at 9.997 GHz with a high sidemode suppression ratio of 45 dB and an ultra-low phase noise of-142 dBc/Hz at a 10kHz offset frequency is generated.

Original languageEnglish
Title of host publication2022 IEEE 14th International Conference on Advanced Infocomm Technology, ICAIT 2022
Place of PublicationPiscataway, NJ
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages256-259
Number of pages4
Edition1
ISBN (Electronic)9781665471565
DOIs
Publication statusPublished - 2022
Event14th IEEE International Conference on Advanced Infocomm Technology, ICAIT 2022 - Chongqing, China
Duration: 8 Jul 202211 Jul 2022

Publication series

Name2022 IEEE 14th International Conference on Advanced Infocomm Technology, ICAIT 2022

Conference

Conference14th IEEE International Conference on Advanced Infocomm Technology, ICAIT 2022
Country/TerritoryChina
CityChongqing
Period8/07/2211/07/22

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