光学精密工程2026，Vol.34Issue(3)：376-392,17.DOI:10.37188/OPE.20263403.0376
时谱复用合成多基线气体透射比测量系统
Multiple baselines gas transmittance meter based on time-spectrum multiplexing combination
摘要
Abstract
To overcome the limitations of existing multi-baseline gas transmittance meters,including inad-equate stability,difficulty in maintaining optical-path alignment accuracy,high cost,and limited compact-ness,a gas transmittance meter is proposed that enables stable multi-baseline switching within a confined space while sharing a single receiver.Based on time-spectral multiplexing,an integrated multi-wavelength filled-aperture laser is combined with optical components,including beam splitters and broadband reflec-tors,to construct folded optical paths with multiple baselines.Distinct wavelengths are gated in separate time slots to realize stable baseline switching.The multi-wavelength signals are spatially combined into a single optical path and detected by a single receiver for gas transmittance calculation.Experimental results demonstrate that,under comprehensive conditions incorporating errors from both the transceiver system and local components,the proposed multi-baseline system reduces gas-transmittance indication errors from 1.99%and 25.58%in a single-baseline system to within 0.38%and 7.23%in low-and high-transmit-tance tests,respectively.These results indicate effective suppression of system attenuation and local inter-ference,providing a practical solution for accurate monitoring under complex meteorological conditions.关键词
光电测量/多基线/主动探测/气体透射比Key words
photoelectric measurement/multiple baselines/active detection/gas transmittance分类
机械制造引用本文复制引用
宋世豪,杨卓异,张海涛,孟阔,赵震欧,耿东晛..时谱复用合成多基线气体透射比测量系统[J].光学精密工程,2026,34(3):376-392,17.基金项目
四川省科技计划资助项目(No.2024YFHZ0002) （No.2024YFHZ0002）
