Author(s): Wen, J (Wen, Jun); Shi, DF (Shi, Difei); Jia, ZY (Jia, Zhiyao); Li, GY (Li, Guangyi); Wang, X (Wang, Xin); Li, M (Li, Ming); Zhu, NH (Zhu, Ninghua); Li, W (Li, Wei)

Source: JOURNAL OF LIGHTWAVE TECHNOLOGY Volume: 39 Issue: 10 Pages: 3169-3176 DOI: 10.1109/JLT.2021.3064866 Published: MAY 15 2021

Abstract: Frequency estimation of microwave signals is a crucial functionality for applications ranging from biomedical engineering to electronic warfare systems. Photonics-based frequency measurement systems offer advantages of flexible reconfigurability and wide bandwidth compard to electronic methods. However, photonic based systems are limited by trade-offs between measurement range and accuracy. Here, we propose and experimentally demonstrate a frequency identification system with ultrahigh accuracy of 900 kHz, large bandwidth of 39 GHz, and the capability of multiple frequencies estimation. The great performance is achieved by wideband distributed frequency-to-power mapping created by self-heterodyne low-coherence interferometry. The results show that the system we proposed is beneficial for applications in RF spectrum sensing of modern communication and radar applications.

Accession Number: WOS:000648335500018

ISSN: 0733-8724

eISSN: 1558-2213

Full Text: https://ieeexplore.ieee.org/document/9373890