摘要
相位生成载波(PGC)技术作为干涉型光纤传感器重要的一种信号解调方法,因其灵敏度高、动态范围大等优点被广泛应用。首先对PGC技术的内调制和外调制两种基本调制方法进行阐述,简要说明了PGC技术解调的常规算法。针对PGC解调方法中出现伴生调幅、调制深度漂移和相位延迟引起信号解调失真的关键问题,分析其原因并概括归纳近年来国内外研究者相关工作的改进方法。对进一步优化光干涉型传感信号的解调方案提供新的思路。
As an important signal demodulation method for interferometric fiber optic sensors,phase generated car-rier(PGC)technology has been widely used because of its high sensitivity and large dynamic range.In this review,internal modulation and external modulation,the basic modulation methods of PGC technology are described.And its conventional demodulation algorithms are briefly explained.Companion amplitude modulation,modulation depth drift and phase delay are main problems which make the demodulated signals distort.For solving these problems and impro-ving demodulation accuracy,recent researches and improvement measures are summarized in this review.It provides new ideas to optimize the demodulation methods for optical interference sensor signals.
作者
袁俊杰
刘喜银
张萌颖
何广平
谭培培
赵全亮
YUAN Junjie;LIN Xiyin;ZHANG Mengying;HE Guangping;TAN Peipei;ZHAO Quanliang(Department of Mechanical and Materials Engineering,North China University of Technology,Beijing 100144,China;Beijing Urban Lighting Management Center,Beijing 100078,China)
出处
《激光杂志》
CAS
北大核心
2023年第9期1-10,共10页
Laser Journal
基金
国家自然科学基金(No.61801456)
北京市教委-市自然基金联合资助项目(No.KZ202010009015)
北方工业大学科研启动基金项目。
关键词
光纤光学
光纤传感器
相位生成载波
光干涉测量
相位调制
fiber optics
fiber optic sensor
phase generated carrier
optical interferometry
phase modulation
