Close-to-carrier phase noise suppression in optoelectronic oscillator

Fu Zhenwei; Zhen Zeng; Lingjie Zhang; Zhiyao Zhang; Yong Liu

doi:10.1117/12.3006148

24 November 2023 Close-to-carrier phase noise suppression in optoelectronic oscillator

Fu Zhenwei, Zhen Zeng, Lingjie Zhang, Zhiyao Zhang, Yong Liu

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129351O (2023) https://doi.org/10.1117/12.3006148
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

An approach to generating local oscillation (LO) microwave signals with low close-to-carrier phase noise is proposed and experimentally demonstrated based on employing cascaded optoelectronic oscillators (OEOs). In this scheme, an actively mode-locked OEO (AML-OEO) is used as the master OEO to generate a microwave comb with low close-to-carrier phase noise. Then, the generated microwave comb is injected into the slave OEO with a well-designed loop delay to form an injection-locked OEO (IL-OEO). Owing to the different transmission frequency response curves between the two OEO loops, a single tooth is selected from the injected microwave comb and is regenerated in the slave OEO cavity, while the unselected teeth are effectively suppressed. Benefited from the injection locking effect, the low close-to-carrier phase noise characteristic of the microwave comb from the AML-OEO is transferred to the regenerated LO microwave signal from the slave OEO. In such a case, an LO microwave signal with low close-to-carrier phase noise is generated by the proposed cascaded OEOs. A proof-of-concept experiment is carried out to verify the feasibility of this scheme. In the experiment, an LO microwave signal at 10 GHz is generated, where the spurious suppression ratio and the close-to-carrier phase noise are measured to be 22 dB and -85 dBc/Hz@10 Hz, respectively. Compared to the LO microwave signal directly generated by the conventional OEO, the close-to-carrier phase noise is reduced by more than 30 dB.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Fu Zhenwei, Zhen Zeng, Lingjie Zhang, Zhiyao Zhang, and Yong Liu "Close-to-carrier phase noise suppression in optoelectronic oscillator", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129351O (24 November 2023); https://doi.org/10.1117/12.3006148

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available