發(fā)布時間：2018-04-15 08:19

  本文選題：空芯波導 + 氣體傳感　； 參考：《光通信研究》2017年02期

【摘要】：設計并搭建了低溫拉絲塔,以PC(聚碳酸酯)管材為預制棒制備漸變型空芯光纖基管。在基管上鍍制Ag和AgI來制備柔性漸變空芯波導,該波導在3.3μm波長處具有低損耗特性。通過理論和實驗探究了波導的傳輸特性,以甲烷作為樣本氣體,通過實際測量,探究了波導長度、彎曲半徑和大小端入射等因素對系統(tǒng)特性的影響。結(jié)果表明,對于漸變型空芯波導,當光源從大端入射時能提高耦合效率,并優(yōu)化系統(tǒng)檢測極限和靈敏度;當光源從小端入射時,系統(tǒng)將具有更大的飽和吸收度。
[Abstract]:A low temperature wire drawing tower was designed and built, and PC (polycarbonate) pipe was used as the preform to prepare the graded hollow fiber based tube.Silver and AgI were deposited on the base tube to fabricate the flexible graded hollow waveguide, which has low loss at 3.3 渭 m wavelength.The transmission characteristics of the waveguide are investigated theoretically and experimentally. The effects of the waveguide length, bending radius and incident incident on the system characteristics are investigated by using methane as the sample gas and the actual measurement.The results show that the coupling efficiency can be improved and the detection limit and sensitivity of the system can be optimized when the light source is incident from the large end for the gradual change hollow waveguide, and the system will have greater saturation absorption when the light source is incident from the small end.
【作者單位】： 復旦大學信息科學與工程學院;
【基金】：上海市自然科學基金資助項目(15ZR1404100)
【分類號】：TN253;TP212

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