Author(s): Wang, L (Wang, Lu); Hao, TF (Hao, Tengfei); Chen, XY (Chen, Xiaoyu); Guan, MY (Guan, Mengyuan); Li, FP (Li, Fangping); Li, GY (Li, Guangyi); Li, M (Li, ming); Zhu, NH (Zhu, Ninghua); Li, W (Li, Wei)

Source: OPTICS LETTERS Volume: 47 Issue: 18 Pages: 4750-4753 DOI: 10.1364/OL.465656 Published: SEP 15 2022

Abstract: We propose a microwave photonic temperature interroga-tion system with high resolution and sensitivity based on temperature-to-time mapping with a simple structure. In this work, a bidirectional chirped optical signal is con-structed, and the temperature information is mapped to the time interval change of the output pulses by filtering the bidirectional chirped optical signal using the transmission spectrum of a Fabry-Perot filter. Only a low-speed oscillo-scope is required to extract the time interval of the output pulses in the proposed scheme, and complex data process-ing as well as synchronizing processes are avoided. In a proof-of-concept experiment, a high temperature interro-gation sensitivity of 18.24 mu s/& DEG;C and a high resolution of 0.035 & DEG;C are realized, demonstrating good potential for prac-tical applications.(c) 2022 Optica Publishing Group

Accession Number: WOS:000863981800012

PubMed ID: 36107081

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Li, Ming                  0000-0001-8959-9619

ISSN: 0146-9592

eISSN: 1539-4794

Full Text: https://opg.optica.org/ol/fulltext.cfm?uri=ol-47-18-4750&id=500800