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.

Wide-range, high-precision multiple microwave frequency measurement using a chip-based photonic Brillouin filter

Hengyun Jiang, David Marpaung, Mattia Pagani, Khu Vu, Duk-Yong Choi, Steve J. Madden, Lianshan Yan, and Benjamin J. Eggleton
Optica 3(1) 30-34 (2016)

Wideband and low-error microwave frequency measurement using degenerate four-wave mixing-based nonlinear interferometer

Ziyi Lin, Zhirong Chen, Bin Zhang, Fan Li, Jianping Li, Xiaojie Guo, and Zhaohui Li
Opt. Lett. 44(7) 1848-1851 (2019)

Accuracy enhanced microwave frequency measurement based on the machine learning technique

Difei Shi, Guangyi Li, Zhiyao Jia, Jun Wen, Ming Li, Ninghua Zhu, and Wei Li
Opt. Express 29(13) 19515-19524 (2021)

High-resolution photonic-assisted microwave frequency identification based on an ultrahigh-Q hybrid optical filter

Weifeng Zhang, Haoyan Liu, Yihao Cheng, Xu Hong, and Bin Wang
Opt. Express 31(25) 42651-42666 (2023)

Highly sensitive, broadband microwave frequency identification using a chip-based Brillouin optoelectronic oscillator

Zihang Zhu, Moritz Merklein, Duk-Yong Choi, Khu Vu, Pan Ma, Steven J. Madden, and Benjamin J. Eggleton
Opt. Express 27(9) 12855-12868 (2019)