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Bragg gratings in ternary SiO2 : SnO2 : Na2O optical glass fibers

机译:三元SiO2:SnO2:Na2O光学玻璃纤维中的布拉格光栅

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Bragg gratings have been written in an optical fiber with a core made hom ternary SiO2:SnO2:Na2O glass and a SiO2 cladding. The presence of Na2O allows for higher concentrations of SnO2, which are believed to be responsible for the photorefractive response of this composition. In these preliminary experiments significant refractive-index modulations, up to 6.2 X 10(-4), have been achieved with a 248-nm excimer laser and a phase mask to write gratings for reflectivity at similar to 1.5 mu m. The induced refractive-index changes show enhanced temperature stability, and there is no sign of any erasure up to temperatures exceeding 600 degrees C. (C) 2000 Optical Society of America OCIS codes: 060.2400, 060.2290, 050.2270, 160.5320. [References: 11]
机译:布拉格光栅已经写在光纤中,该光纤具有由SiO2:SnO2:Na2O三元玻璃制成的纤芯和SiO2包层。 Na 2 O的存在允许更高浓度的SnO 2,据信这是造成该组合物的光折射反应的原因。在这些初步实验中,使用248 nm准分子激光器和相位掩膜写出光栅,反射率接近1.5μm,可以实现高达6.2 X 10(-4)的显着折射率调制。诱导的折射率变化显示出增强的温度稳定性,并且没有迹象表明在温度超过600摄氏度时会发生任何擦除。(C)2000美国光学学会OCIS代码:060.2400、060.2290、050.2270、160.5320。 [参考:11]

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