基于F-P溫控標準具的高穩(wěn)定性FBG波長解調系統(tǒng)(英文)
發(fā)布時間:2018-01-20 06:39
本文關鍵詞: FBG波長解調 波長掃描激光器 F-P標準具 出處:《紅外與激光工程》2017年01期 論文類型:期刊論文
【摘要】:光纖布拉格光柵(FBG)的波長隨外界溫度和壓力變化。檢測出波長的變化,就可以計算出外界的溫度和壓力。文章提出了一個基于F-P溫控標準具的高穩(wěn)定性光纖布拉格光柵(FBG)波長解調系統(tǒng),討論分析了FBG波長解調系統(tǒng)的原理及高穩(wěn)定性的原因。在這個系統(tǒng)中,帶溫控模塊的F-P標準具用來進行實時波長校準。F-P標準具的波長數(shù)值可查詢得到,由線性插值算法可以得出光纖光柵的波長值。溫控模塊可以保證標準具在±0.01℃的范圍內變化,因此標準具波長值可以認為是定值。最后通過測量水浴槽中光纖光柵的波長變化測試系統(tǒng)穩(wěn)定性,并與MOI公司解調儀sm125在穩(wěn)定性方面做了對比。實驗結果表明20 h內系統(tǒng)的長期穩(wěn)定性可達到±0.15 pm,而sm125解調儀是±3 pm。
[Abstract]:The wavelength of fiber Bragg grating (FBG) varies with the external temperature and pressure. The external temperature and pressure can be calculated. A wavelength demodulation system for fiber Bragg grating (FBG) with high stability based on F-P temperature control standard is presented in this paper. The principle of FBG wavelength demodulation system and the reasons for its high stability are discussed. F-P standard device with temperature control module is used for real-time wavelength calibration. The wavelength value of F-P standard device can be obtained by querying. The wavelength of fiber Bragg grating can be obtained by linear interpolation algorithm. The temperature control module can ensure that the standard varies in the range of 鹵0.01 鈩,
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