Ultra-Broadband Microwave Frequency Measurement Based on Two-Dimensional Information Mapping via Transient Stimulated Brillouin Scattering of Chirped Optical Pulse Sequences
Year: 2024
Type: article
Abstract: This paper proposes a system based on the chirped optical pulse sequence (COPS)-stimulated Brillouin scattering (SBS) effect that utilizes two-dimensional information mapping to realize instantaneous, high-precision and ultra-broadband microwave frequency measurement (MFM). In the proposed MFM system, the unknown signals of different frequencies are frequency-selected by the SBS effect on the COPS to obtain time-dimensional information corresponding to the frequency. The differential response of the optical band-pass filter at different wavelengths is then used to acquire the amplitude-dimensional information corresponding to the frequency. Simultaneous mapping of these dimensions allows for high-precision measurement of the signal under test. The proposed system's single-tone, dual-tone and quad-tone microwave frequency measurements are validated experimentally, and the proposed system exhibits a minimum measurement time of 100 ns with a frequency measurement accuracy of less than 1 MHz and an instantaneous bandwidth exceeding 20 GHz.
Source: Journal of Lightwave Technology
Authors: Shuai Zu, Yiying Gu, Ying Wang, Jiachen Yu, Xun Wang, Jingjing Hu, Mingshan Zhao
Institution: Dalian University of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,495
OpenAlex ID: W4403636072