描述了一種光纖傳感器輸出特性測(cè)試系統(tǒng),該系統(tǒng)通過(guò)調(diào)制和補(bǔ)償技術(shù)大大改善了系統(tǒng)
的穩(wěn)定性,介紹了補(bǔ)償?shù)姆椒ê驼{(diào)制的措施,并進(jìn)行了定點(diǎn)測(cè)試和全程測(cè)試的實(shí)驗(yàn)。結(jié)果表明,采用的調(diào)制和補(bǔ)償技術(shù)可大大減小光源強(qiáng)度變化和外界干擾光的影響,提高測(cè)試系統(tǒng)的穩(wěn)定性。
關(guān)鍵詞:光纖;傳感器;補(bǔ)償;調(diào)制;穩(wěn)定性
Abstract :The output characteristic measuring system of an intensity - type fiber optic sensor is described. Stability of the system can be improved by means of modulation and compensation techniques. The concrete compensation method and modulation measures are presented ,and the experiments with fixed - points and moving - points are performed. Results
show that negative effects caused by light source power fluctuation and environmental light variation can be greatly reduced by means of modulation and compensation ,thus high stability can be achieved.
Key Words :Optical Fiber ;Sensor ;Compensation ;Modulation ;Stability