为得到纯石英阶跃光纤（SI-PDF）中漏泄模式光线功率的传输特性,应用光线投影积分法,推导了不同入射角的激光束在大芯径SI-PDF光纤中的传输功率计算公式,在不同入射角激光束照射下,分别对3、671、40 m SI-PDF光纤的输出功率特性进行了...为得到纯石英阶跃光纤（SI-PDF）中漏泄模式光线功率的传输特性,应用光线投影积分法,推导了不同入射角的激光束在大芯径SI-PDF光纤中的传输功率计算公式,在不同入射角激光束照射下,分别对3、671、40 m SI-PDF光纤的输出功率特性进行了理论和实验研究,用最小二乘法原理对对数坐标下的实验数据进行拟合,得出了损耗系数。结果表明：入射角在0~12°内时,不同入射角功率输出和损耗系数近似一常量,其中损耗系数约为13 dB/km;入射角＆gt;12°时,不同入射角光功率随入射角增加呈指数衰减规律,其损耗系数随入射角增大而增大,在12°时损耗系数值为26 dB/km,在28°时达到了82 dB/km。展开更多
The optical fiber with pure quartz core and Fluorine-doped glass cladding was made by POD (plasma outside deposition) technique in some corporations, while we used the creative technique of “overcladding F-doped tube...The optical fiber with pure quartz core and Fluorine-doped glass cladding was made by POD (plasma outside deposition) technique in some corporations, while we used the creative technique of “overcladding F-doped tube onto quartz rod in high temperature” to make the optical fiber which has the same structure as that from POD, in order to research and compare the influence factors on the loss of the fiber, our research work includes contrast experiments on coating polymers with different refractive index and the concentricity error of the fiber core and cladding. The measurement results show us that there are great differences in the loss spectra between the different fiber samples. We made analysis of it.展开更多
文摘The optical fiber with pure quartz core and Fluorine-doped glass cladding was made by POD (plasma outside deposition) technique in some corporations, while we used the creative technique of “overcladding F-doped tube onto quartz rod in high temperature” to make the optical fiber which has the same structure as that from POD, in order to research and compare the influence factors on the loss of the fiber, our research work includes contrast experiments on coating polymers with different refractive index and the concentricity error of the fiber core and cladding. The measurement results show us that there are great differences in the loss spectra between the different fiber samples. We made analysis of it.
