Source: OPTICS EXPRESS Volume: 31  Issue: 10  Pages: 16929-16938  DOI: 10.1364/OE.485897  Published: MAY 8 2023 

 

Abstract: As a photonic-based microwave signal generation method, the optoelectronic oscil-lator (OEO) has the potential of meeting the increasing demand of practical applications for high frequency, broadband tunability , ultra-low phase noise. However, conventional OEO systems implemented with discrete optoelectronic devices have a bulky size and low reliability, which extremely limits their practical applications. In this paper, a hybrid-integrated wideband tunable OEO with low phase noise is proposed and experimentally demonstrated. The proposed hybrid integrated OEO achieves a high integration level by first integrating a laser chip with a silicon photonic chip , then connecting the silicon photonic chip with electronic chips through wire-bonding to microstrip lines. A compact fiber ring and an yttrium iron garnet filter are also adopted for high-Q factor and frequency tuning, respectively. The integrated OEO exhibits a low phase noise of -128.04 dBc/Hz @ 10 kHz for an oscillation frequency of 10 GHz. A wideband tuning range from 3 GHz to 18 GHz is also obtained, covering the entire C, X, and Ku bands. Our work demonstrates an effective way to achieve compact high-perfor mance OEO based on hybrid integration, and has great potential in a wide range of applications such as modern radar, wireless communication, and electronic warfare systems.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

 

Accession Number: WOS:000996369500005

 

PubMed ID: 37157761

 

ISSN: 1094-4087