光学精密工程2025，Vol.33Issue(10)：1534-1549,16.DOI:10.37188/OPE.20253310.1534
铝涂覆层光纤前向受激布里渊散射对血液温度和声阻抗的监测
Monitoring of blood temperature and acoustic impedance based on forward stimulated brillouin scattering in aluminum coated optical fibers
摘要
Abstract
Based on the temperature and acoustic impedance sensing theory utilizing forward stimulated Brillouin scattering(FSBS)in aluminum-coated optical fibers,the influence of coating thickness on acous-tic mode frequency and linewidth was investigated,simultaneous measurement of temperature and acoustic impedance was realized,and an innovative high-sensitivity method for disease detection in blood was pro-posed.The simulation results demonstrated linear relationships between the frequency/linewidth varia-tions of radial acoustic modes R0,m with temperature and acoustic impedance.Fibers with different coating thicknesses exhibited distinct different sensitivities.The optimal linewidth-based acoustic impedance sensi-tivity is of 3.90 MHz/(kg·mm²·s)at 3 µm coating thickness and maximum frequency-based temperature sensitivity reaches up to 51.44 kHz/℃at 5 µm coating thickness.Measurement errors can be reduced to 0.015℃and 0.033 kg/(mm²·s)for 3 µm coating,and 0.008℃and 0.027 kg/(mm²·s)for 5 µm coat-ing,respectively.Taking±0.5 μm coating thickness variation into account,the temperature and acoustic impedance tolerance vary within 0.003-0.020℃and 0.021-0.032 kg/(mm²·s)for 3 µm coating,and 0.003-0.009℃with 0.004-0.058 kg/(mm²·s)for 5 µm coating,respectively.This sensing system en-ables real-time monitoring of blood temperature and acoustic impedance,demonstrating potential applica-tions in distinguishing normal physiological states from pathological conditions(e.g.,hyperproteinemia,anemia)through multi-parameter analysis.The technology may provide innovative solutions for early dis-ease diagnosis and precision medicine through its high-sensitivity detection capabilities.关键词
前向受激布里渊散射/铝涂覆层光纤/温度和声阻抗传感/血液监测/疾病诊断Key words
Forward Stimulated Brillouin Scattering(FSBS)/aluminum-coated optical fiber/tempera-ture and acoustic impedance sensing/blood monitoring/disease diagnosis分类
信息技术与安全科学引用本文复制引用
侯尚林,山航,董洁,武刚,晏祖勇..铝涂覆层光纤前向受激布里渊散射对血液温度和声阻抗的监测[J].光学精密工程,2025,33(10):1534-1549,16.基金项目
国家自然科学基金(No.61665005) （No.61665005）
甘肃省自然科学基金(No.24JRRA208) （No.24JRRA208）
兰州理工大学红柳一流学科发展计划资助项目 （）
