本文選題：光纖光學(xué) + 光纖電流互感器�。� 參考：《中國激光》2014年11期

【摘要】：利用保偏延遲光纖環(huán)的偏振耦合模型,考慮幅值較大的互易性寄生波列,計(jì)算了光纖電流互感器(FOCS)光路系統(tǒng)的干涉光強(qiáng),得到了互感器變比與延遲環(huán)偏振串音之間的理論關(guān)系,揭示了延遲環(huán)偏振串音的溫度相關(guān)性對互感器變比的影響機(jī)理,并提出了抑制方法。為保證變溫環(huán)境下互感器的變比誤差在0.2%以內(nèi),延遲環(huán)的偏振串音應(yīng)低于-30dB。實(shí)驗(yàn)結(jié)果表明:在繞制延遲環(huán)的過程中,降低繞環(huán)張力、減少膠的用量,采用低溫度系數(shù)骨架可有效地改善互感器變比的溫度穩(wěn)定性,在-40℃!70℃范圍內(nèi),互感器變比的變化量由0.63%降低至0.07%。該研究為光纖電流互感器中保偏延遲光纖環(huán)的設(shè)計(jì)和繞制工藝提供了理論指導(dǎo)。
[Abstract]:Based on the polarization coupling model of polarization maintaining delay fiber loop and considering the reciprocal parasitic wave train with larger amplitude, the interference light intensity of optical path system of optical fiber current transformer / FOCSs is calculated, and the theoretical relationship between the transformer ratio and the polarization crosstalk of the delay ring is obtained. The influence mechanism of temperature correlation of delay ring polarization crosstalk on transformer ratio is revealed, and the suppression method is proposed. In order to ensure that the ratio error of transformer is less than 0.2%, the polarization crosstalk of delay loop should be lower than -30 dB. The experimental results show that the temperature stability of transformer ratio can be effectively improved by using low temperature coefficient skeleton in the process of winding delay ring by reducing the winding tension and the amount of glue, and in the range of -40 鈩，

本文編號：2029564